UL Isolation Transformers

Last Updated: January 16, 2025 Reviewed by: Jon Lowy, consulting engineer

Description

UL Isolation Transformers are designed to provide electrical isolation between their input and output windings. This isolation helps to prevent electrical shock and reduce electrical noise in the system. These transformers are constructed with heavy-duty shields and insulation between the coils to effectively prevent arcing and electric shock. They may also feature ruggedized metal housing to further increase safety.

Working Principle

Isolation transformers work by using electromagnetic induction to transfer electrical energy between two or more windings. The primary and secondary windings are not electrically connected but are magnetically coupled through a core. This design allows the transformer to isolate portions of the circuit, preventing shock and reducing electromagnetic interference. The Faraday shields used in these transformers help to block electric fields from interrupting current flow, thereby reducing electromagnetic interference on the signal line and improving power quality and device efficiency.

Applications

Isolation transformers are widely used in various applications to ensure safety and improve performance. In medical settings, they are crucial for isolating medical devices to prevent electrical shock and ensure reliable operation. For example, they are used in medical imaging equipment, patient monitoring systems, and surgical devices. In industrial environments, they are used to isolate sensitive equipment from electrical noise and potential faults in the power supply. They are also used in audio and video equipment to prevent ground loops and improve signal quality.

Advantages over other Isolation Transformers

One of the main advantages of UL Isolation Transformers is their compliance with stringent safety standards such as UL 544, UL 2601, and UL 60601, which are critical for medical applications. These transformers are designed with extremely low levels of current leakage and minimum creepage distance, making them safer and more reliable for sensitive applications. Additionally, the use of Faraday shields and heavy-duty insulation provides better protection against electromagnetic interference and electrical noise compared to other types of isolation transformers.

Limitations

Despite their advantages, UL Isolation Transformers have some limitations. They are generally bulkier and heavier than other types of transformers, such as autotransformers, due to the additional insulation and shielding required for safety. This can make them less suitable for applications where space and weight are critical factors. Additionally, they are typically more expensive due to the higher quality materials and construction standards required to meet UL certifications.

Considerations

When selecting a UL Isolation Transformer, several factors should be considered. Initial costs can be higher due to the stringent safety standards and high-quality materials used in their construction. Operating expenses may also be higher due to the need for regular maintenance to ensure continued compliance with safety standards. However, their durability and reliability can offset these costs over time. It's important to consider the specific requirements of the application, such as the need for low current leakage, high insulation resistance, and effective electromagnetic interference reduction. Replacement and maintenance costs should also be factored in, as these transformers may require periodic inspections and testing to ensure they continue to meet safety standards.

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11KV 15KV Outdoor Prefabrical Substation Transformers High Voltage Compact Electrical Box Type Substation -- No.1601518960741
from Shenzhen Xingkerong Technology Co., Ltd

Home // All Collections // Transformer // 11KV 15KV Outdoor Prefabrical Substation Transformers High Voltage Compact Electrical Box Type Substation [See More]

  • Agency: RoHS; IEC; UL; CE
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PC Mount World Series™ Power Transformers -- VPP10-1000
from Triad Magnetics

Triad PC mount World Series transformers incorporate a dual bobbin construction with an insulating shroud, both made of a high temperature material that exceeds UL flammability requirements. These units are designed with very high isolation between the primary and secondary, and also, between each... [See More]

  • Agency: CSA; UL; CSA IEC TUV UL
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 115 to 230
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1KVA 2KVA 3KVA 4KVA 5KVA Transformer Without box -- No.1601522522446
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3 Phase 3kva 5kva 7kva 10kva 15kva 30kva Step Down up Isolation Transformer -- No.1601406855824
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3500KVA 3000 KVA Cast Resin Dry Type Transformer SCB13 SCB14 SCB15 for Industrial Mining Photovoltaic Power Station 11KV 35KV -- No.1601723734098 - Image
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  • Agency: RoHS; ANSI; IEC; UL; CE
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View Datasheet
Control transformer Acme Electric T253008S [T253008S from Acme Electric]
from Automation24, Inc.

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  • Agency: UL
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  • Operating Frequency: 50 to 60
IsoBox Transformer A-Series -- Model ISB-030A
from Toroid Corp. of Maryland

Wall, chassis, table top and cart installations, aluminum enclosure [See More]

  • Agency: CSA; UL
  • Output Type: AC
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  • Mounting: Chassis; Wall Mount
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Drive Isolation Transformers: Group A - Primary 460V Delta; Secondary 230Y/133
from Acme Electric Corp. / Power Distribution Products

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  • Agency: ANSI; CSA; UL; CE and IEEE
  • Output Type: AC
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Multi-Pulse Drive Transformer
from Schaffner EMC Inc.

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  • Agency: ANSI; CSA; IEC; UL; VDE; BS, DIN, EN IEEE, IRIS, ISO
  • Power Rating (VA): 1.00E7
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Drive Tamer™ - Image
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Drive Tamer™
from Mirus International, Inc.

Designed to replace standard drive isolation transformers, the Drive Tamer ™ is built to not only withstand the harsh harmonic environment produced by Variable Frequency Drives (VFD) but to also induce cancellation of harmonics upstream and thereby reduce voltage distortion throughout the... [See More]

  • Agency: CSA; UL
  • Power Rating (VA): 660000
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from Premier Magnetics, Inc.

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  • Agency: UL
  • Operating Temperature: 0 to 70
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Efficient PCB Transformer -- ECO2003-1,5DD12 - Image
Efficient PCB Transformer -- ECO2003-1,5DD12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 12 Vac. Rated power 1.5 - 10 VA. Insulation class B. Maximum ambient temperature 70 °C. Efficiency up to 77 %. Degree of protection IP 00. Safety isolating transformer. to: VDE 0570 Teil 2-6, DIN EN 61558-2-6, EN 61558-2-6, IEC... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
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18kVA 18kW 4U Step-Down Isolation Transformer - Converts 208/240V 60Hz (Source) to 120/240V split phase (Load) -- SU20KXFMRT4U
from Tripp Lite by Eaton

Tripp Lite's SU20KXFMRT4U step-down, isolation transformer converts 208 or 240V input from any 60Hz generator, utility or UPS high voltage source to 240/120V output. 208 or 240V hardwire input connection and hardwire 240/120V output. Supports 4U rackmount installation in 4 post racks with included... [See More]

  • Agency: RoHS; CSA; UL
  • Mounting: Rack/Tower (2U)
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Dental Transformer - Image
Dental Transformer
from Powertronix Inc.

Dental Transformers are used in medical devices that require improved electrical isolation and helps to reduce leakage current. Our product provides protection to abnormal operating conditions such as over load, over current and improvised cooling, as well as filter power disturbances and noises. [See More]

  • Agency: RoHS; IEC; UL
  • Mounting: Chassis; Center Potted with Thru Hole, L Bracket, Customer Defined
  • Other Transformer Types / Applications: Single Phase Transformer
  • Input Voltage: 120 to 230
Control transformer Acme Electric T253010S - Image
View Datasheet
Control transformer Acme Electric T253010S [T253010S from Acme Electric]
from Automation24, Inc.

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  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
Non-Linear Load Transformers: Group A - K Factor 20, 150° C Rise - 480 Delta Primary Volts - 208Y/120 Secondary Volts - 3Ø, 60Hz - Image
Non-Linear Load Transformers: Group A - K Factor 20, 150° C Rise - 480 Delta Primary Volts - 208Y/120 Secondary Volts - 3Ø, 60Hz
from Acme Electric Corp. / Power Distribution Products

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  • Agency: ANSI; CSA; UL; CE and IEEE
  • Output Type: AC
  • Winding Turns: Step-Down Transformer
  • Mounting: Pad-Mounted
3kV Reinforced Insulation Transformer -- TSD-1227 - Image
View Datasheet
3kV Reinforced Insulation Transformer -- TSD-1227
from Premier Magnetics, Inc.

— Designed for Use with Power Integrations, Inc. TinySwitch Series Off-Line Switcher Controllers —. Designed to meet a Universal Input of 85Vac to 265Vac, 47Hz to 440Hz. Up to 6000Vrms of Isolatio [See More]

  • Agency: CSA; IEC; UL
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  • Winding Turns: One to One
  • Operating Temperature: 0 to 70
Isolating Transformer -- TIM 1000 - Image
View Datasheet
Isolating Transformer -- TIM 1000
from Block USA, Inc.

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  • Agency: UL; VDE
  • Input Voltage: 230
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Isolator Series 120V 1000W UL 60601-1 Medical-Grade Isolation Transformer with 4 Hospital-Grade Outlets -- IS1000HG - Image
Isolator Series 120V 1000W UL 60601-1 Medical-Grade Isolation Transformer with 4 Hospital-Grade Outlets -- IS1000HG
from Tripp Lite by Eaton

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  • Agency: UL
  • Input Voltage: 120
  • Mounting: Tower
  • Features: Medical Grade
High Voltage Toroidal Transformer - Image
High Voltage Toroidal Transformer
from Powertronix Inc.

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  • Agency: RoHS; UL
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Control transformer Acme Electric T253012S - Image
View Datasheet
Control transformer Acme Electric T253012S [T253012S from Acme Electric]
from Automation24, Inc.

Single phase low voltage distribution transformer T253012S from Acme Electric has an input voltage of 240, 480 V AC, and an output voltage of 120, 240 V AC with a power rating of 2 kVA. The dry type transformer T253012S also provides excellent ingress protection with it's NEMA 3R enclosure for both... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
Isolating Transformer -- TT3 1-4-4 - Image
View Datasheet
Isolating Transformer -- TT3 1-4-4
from Block USA, Inc.

Rated input voltage 3 x 400 Vac. Rated output voltage 3 x 380 - 3 x 420 Vac. Rated power 1000 - 30000 VA. Insulation class F. Maximum ambient temperature 50 °C. Efficiency up to 97.5 %. Degree of protection IP 00. Optionally adapted package for higher degrees of protection (see data table). [See More]

  • Agency: UL
  • Input Voltage: 400
  • Operating Frequency: 50 to 60
  • Output Voltage: 400
Isolator Series 120V 1800W UL 60601-1 Medical-Grade Isolation Transformer with 6 Hospital-Grade Outlets -- IS1800HG - Image
Isolator Series 120V 1800W UL 60601-1 Medical-Grade Isolation Transformer with 6 Hospital-Grade Outlets -- IS1800HG
from Tripp Lite by Eaton

Isolator Series UL 60601-1 Listed Medical-Grade Isolation Transformers offer line isolation and continuous noise filtering. An internal low-impedance isolation transformer component offers 100% isolation from the input AC line. Full UL 60601-1 medical-grade listing with hospital-grade plug and... [See More]

  • Agency: UL
  • Input Voltage: 120
  • Mounting: Tower
  • Features: Medical Grade
Isolation Transformer - Image
Isolation Transformer
from Powertronix Inc.

Isolation Transformers are distinguished by their small size, light weight and high efficiency. They are built to form, fit and function and can be provided with one or more primary windings and one or more secondary windings. APPLICATIONS. Industrial Automation. Electrical Equipment. Transformer... [See More]

  • Agency: RoHS; UL
  • Mounting: Center Potted with Thru Hole, Flange, Excapsulated, Custom Mounting Bracket
  • Other Transformer Types / Applications: Toroidal Core; Single Phase Transformer
  • Power Rating (VA): 18 to 15000
Control transformer Acme Electric TB1000N005F0 - Image
Control transformer Acme Electric TB1000N005F0 [TB1000N005F0 from Acme Electric]
from Automation24, Inc.

Single phase control tranformer TB1000N005F0 from Acme Electric has an input voltage of 208, 230, 460 V AC, and an output voltage of 115 V AC with a power rating of 1 kVA. The TB1000N005F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
Isolating Transformer -- USTE 100/2x115 - Image
View Datasheet
Isolating Transformer -- USTE 100/2x115
from Block USA, Inc.

Rated input voltage 208 - 600 Vac. Rated output voltage 24 - 230 Vac. Rated power 100 - 3200 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 96 %. Degree of protection IP 00. Control transformer. to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2,. [See More]

  • Agency: UL
  • Input Voltage: 208 to 600
  • Operating Frequency: 50 to 60
  • Output Voltage: 115
Isolator Series 120V 250W UL 60601-1 Medical-Grade Isolation Transformer with 2 Hospital-Grade Outlets -- IS250HG - Image
Isolator Series 120V 250W UL 60601-1 Medical-Grade Isolation Transformer with 2 Hospital-Grade Outlets -- IS250HG
from Tripp Lite by Eaton

Isolator Series UL 60601-1 Listed Medical-Grade Isolation Transformers offer line isolation and continuous noise filtering. An internal low-impedance isolation transformer component offers 100% isolation from the input AC line. Full UL 60601-1 medical-grade listing with hospital-grade plug and... [See More]

  • Agency: UL
  • Input Voltage: 120
  • Mounting: Tower
  • Features: Medical Grade
Control transformer Acme Electric TB1000N008F0 - Image
Control transformer Acme Electric TB1000N008F0 [TB1000N008F0 from Acme Electric]
from Automation24, Inc.

Single phase control tranformer TB1000N008F0 from Acme Electric has an input voltage of 220, 230, 240, 440, 460, 480 V AC, and an output voltage of 110/115/120 V AC with a power rating of 1 kVA. The TB1000N008F0 also provides hassle free installation with convenient oblong mounting holes. Easily... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
Low Profile Transformer -- FL 10/12 - Image
View Datasheet
Low Profile Transformer -- FL 10/12
from Block USA, Inc.

Rated input voltage 2 x 115 Vac. Rated output voltage 2 x 5 - 2 x 24 Vac. Rated power 2 - 52 VA. Insulation class E. Maximum ambient temperature 40 °C. Efficiency up to 81 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL... [See More]

  • Agency: UL; VDE
  • Input Voltage: 115
  • Operating Frequency: 50 to 60
  • Output Voltage: 12
Isolator Series 120V 500W UL 60601-1 Medical-Grade Isolation Transformer with 4 Hospital-Grade Outlets -- IS500HG - Image
Isolator Series 120V 500W UL 60601-1 Medical-Grade Isolation Transformer with 4 Hospital-Grade Outlets -- IS500HG
from Tripp Lite by Eaton

Isolator Series UL 60601-1 Listed Medical-Grade Isolation Transformers offer line isolation and continuous noise filtering. An internal low-impedance isolation transformer component offers 100% isolation from the input AC line. Full UL 60601-1 medical-grade listing with hospital-grade plug and... [See More]

  • Agency: UL
  • Input Voltage: 120
  • Mounting: Tower
  • Features: Medical Grade
Control transformer Acme Electric TB2000N005F0 - Image
Control transformer Acme Electric TB2000N005F0 [TB2000N005F0 from Acme Electric]
from Automation24, Inc.

Single phase control tranformer TB2000N005F0 from Acme Electric has an input voltage of 208, 230, 460 V AC, and an output voltage of 115 V AC with a power rating of 2 kVA. The TB2000N005F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
Low Profile Transformer -- FL 10/14014/9 - Image
Low Profile Transformer -- FL 10/14014/9
from Block USA, Inc.

Rated input voltage 2 x 115 Vac. Rated output voltage I 9 Vac. Rated output voltage II 14.0-0-14.0 Vac. Rated power 4.34 - 37.3 VA. Insulation class E. Maximum ambient temperature 40 °C. Efficiency up to 78 %. Degree of protection IP 00. Safety isolating transformer. to: VDE 0570 Teil 2-6, DIN... [See More]

  • Agency: UL; VDE
  • Input Voltage: 115
  • Operating Frequency: 50 to 60
  • Power Rating (VA): 7.07
Control transformer Acme Electric TB2000N008F0 - Image
Control transformer Acme Electric TB2000N008F0 [TB2000N008F0 from Acme Electric]
from Automation24, Inc.

Single phase control tranformer TB2000N008F0 from Acme Electric has an input voltage of 240, 480 V AC, and an output voltage of 120 V AC with a power rating of 2 kVA. The TB2000N008F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required power... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
Low Profile Transformer -- FLN 10/12 - Image
View Datasheet
Low Profile Transformer -- FLN 10/12
from Block USA, Inc.

Rated input voltage 2 x 115 Vac. Rated output voltage 2 x 6 - 2 x 21 Vac. Rated power 3 - 60 VA. Insulation class B. Maximum ambient temperature 70 °C. Efficiency up to 85 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1. [See More]

  • Agency: UL; VDE
  • Input Voltage: 115
  • Operating Frequency: 50 to 60
  • Output Voltage: 12
Control transformer Acme Electric TB350N001 - Image
Control transformer Acme Electric TB350N001 [TB350N001 from Acme Electric]
from Automation24, Inc.

Single phase control tranformer TB350N001 from Acme Electric has an input voltage of 120, 240 V AC, and an output voltage of 12, 24 V AC with a power rating of 0.3 kVA. The TB350N001 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required power... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
PCB Transformer -- VC 10/1/12 - Image
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PCB Transformer -- VC 10/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 24 Vac. Rated power 3.2 - 16 VA. Insulation class B. Maximum ambient temperature 40 - 60 °C. Efficiency up to 76 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Control transformer Acme Electric TB500N005F0 - Image
Control transformer Acme Electric TB500N005F0 [TB500N005F0 from Acme Electric]
from Automation24, Inc.

Single phase control tranformer TB500N005F0 from Acme Electric has an input voltage of 208, 230, 460 V AC, and an output voltage of 115 V AC with a power rating of 0.5 kVA. The TB500N005F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
PCB Transformer -- VCM 10/1/12 - Image
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PCB Transformer -- VCM 10/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 24 Vac. Rated power 5 - 50 VA. Insulation class B. Maximum ambient temperature 40 - 50 °C. Efficiency up to 87 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Control transformer Acme Electric TB500N008F0 - Image
Control transformer Acme Electric TB500N008F0 [TB500N008F0 from Acme Electric]
from Automation24, Inc.

Single phase control tranformer TB500N008F0 from Acme Electric has an input voltage of 220, 230, 240, 440, 460, 480 V AC, and an output voltage of 110/115/120 V AC with a power rating of 0.5 kVA. The TB500N008F0 also provides hassle free installation with convenient oblong mounting holes. Easily... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
PCB Transformer -- VCN 10/1/12 - Image
View Datasheet
PCB Transformer -- VCN 10/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 18 Vac. Rated power 4.5 - 50 VA. Insulation class B. Maximum ambient temperature 70 °C. Efficiency up to 84 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1. Safety... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Control transformer Acme Electric TF217437S - Image
View Datasheet
Control transformer Acme Electric TF217437S [TF217437S from Acme Electric]
from Automation24, Inc.

Single phase low voltage distribution transformer TF217437S from Acme Electric has an input voltage of 190, 200, 208, 220, 380, 400, 416, 440 V AC, and an output voltage of 120, 240 V AC with a power rating of 1 kVA. The dry type transformer TF217437S also provides excellent ingress protection with... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
PCB Transformer -- VR 13/1/12 - Image
View Datasheet
PCB Transformer -- VR 13/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 8 - 2 x 18 Vac. Rated power 4.5 - 30 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 84 %. Degree of protection IP 00. Safety isolating transformer. to: VDE 0570 Teil 2-6, DIN EN 61558-2-6, EN 61558-2-6, IEC... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Control transformer Acme Electric TF217439S - Image
View Datasheet
Control transformer Acme Electric TF217439S [TF217439S from Acme Electric]
from Automation24, Inc.

Single phase low voltage distribution transformer TF217439S from Acme Electric has an input voltage of 190, 200, 208, 220, 380, 400, 416, 440 V AC, and an output voltage of 120, 240 V AC with a power rating of 2 kVA. The dry type transformer TF217439S also provides excellent ingress protection with... [See More]

  • Agency: UL
  • Mounting: Screw mounting
  • Output Type: AC
  • Operating Frequency: 50 to 60
Safety Isolating Control Transformer -- ST 100/23/12 - Image
View Datasheet
Safety Isolating Control Transformer -- ST 100/23/12
from Block USA, Inc.

Rated input voltage 230 - 690 Vac. Rated output voltage 12 - 230 Vac. Rated power 20 - 2500 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 96 %. Degree of protection IP 00. Control transformer. to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2,. UL... [See More]

  • Agency: UL; VDE
  • Input Voltage: 230
  • Operating Frequency: 50 to 60
  • Output Voltage: 12
Safety Isolating Control Transformer -- STE 100/23/24 - Image
View Datasheet
Safety Isolating Control Transformer -- STE 100/23/24
from Block USA, Inc.

Rated input voltage 230 - 400 Vac. Rated output voltage 24 - 230 Vac. Rated power 63 - 2500 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 95 %. Degree of protection IP 00. Control transformer. to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2,. UL... [See More]

  • Agency: UL
  • Input Voltage: 230
  • Operating Frequency: 50 to 60
  • Output Voltage: 24
Safety Isolating Control Transformer -- STEU 100/23 - Image
View Datasheet
Safety Isolating Control Transformer -- STEU 100/23
from Block USA, Inc.

Rated input voltage 230 and 400 Vac. Rated output voltage 24 - 230 Vac. Rated power 63 - 2500 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 94 %. Degree of protection IP 00. Control transformer. to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2,. [See More]

  • Agency: UL
  • Input Voltage: 230 to 400
  • Operating Frequency: 50 to 60
  • Output Voltage: 115
Safety Isolating Control Transformer -- STU 100/24 - Image
View Datasheet
Safety Isolating Control Transformer -- STU 100/24
from Block USA, Inc.

Rated input voltage 210 - 540 Vac. Rated output voltage 24 - 230 Vac. Rated power 63 - 2500 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 95 %. Degree of protection IP 00. Control transformer. to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2,. UL... [See More]

  • Agency: UL; VDE
  • Input Voltage: 210 to 540
  • Operating Frequency: 50 to 60
  • Output Voltage: 24
Safety Transformer -- SIM 500 - Image
View Datasheet
Safety Transformer -- SIM 500
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 2 x 12 Vac. Rated power 60 - 800 VA. Insulation class A. Maximum ambient temperature 40 °C. Efficiency up to 95 %. Degree of protection IP 20. Safety isolating transformer. to: VDE 0570 Part 2-6, DIN EN 61558-2-6, EN 61558-2-6, IEC 61558-2-6. [See More]

  • Agency: UL; VDE
  • Input Voltage: 230
  • Operating Frequency: 50 to 60
  • Output Voltage: 12
Short Circuit Proof PCB Transformer -- AVB 0,35/2/12 - Image
View Datasheet
Short Circuit Proof PCB Transformer -- AVB 0,35/2/12
from Block USA, Inc.

Rated input voltage 2 x 115 Vac. Rated output voltage 6 - 2 x 24 Vac. Rated power 0.35 - 3.2 VA. Insulation class B. Maximum ambient temperature 70 °C (AVB 3,2 max. 50 °C). Efficiency up to 59 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN... [See More]

  • Agency: UL
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 115
Short Circuit Proof PCB Transformer -- PT 13/1/12 - Image
View Datasheet
Short Circuit Proof PCB Transformer -- PT 13/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 24 Vac. Rated power 4.5 - 30 VA. Insulation class E. Maximum ambient temperature 40 °C. Efficiency up to 83 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Short Circuit Proof PCB Transformer -- VB 0,35/1/12 - Image
View Datasheet
Short Circuit Proof PCB Transformer -- VB 0,35/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 24 Vac. Rated power 0.35 - 3.2 VA. Insulation class B. Maximum ambient temperature 70 °C (VB 3,2 max. 50 °C). Efficiency up to 58 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1,... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Short Circuit Proof PCB Transformer -- VBEI 0,5/1/12 - Image
Short Circuit Proof PCB Transformer -- VBEI 0,5/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 24 Vac. Rated power 0.5 VA. Insulation class B. Maximum ambient temperature 70 °C. Efficiency up to 37 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL 5085-1/-2,... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Short Circuit Proof PCB Transformer -- VBN 0,7/1/12 - Image
View Datasheet
Short Circuit Proof PCB Transformer -- VBN 0,7/1/12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 6 - 2 x 18 Vac. Rated power 0.7 - 3 VA. Insulation class B. Maximum ambient temperature 70 °C. Efficiency up to 59 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1. Safety... [See More]

  • Agency: UL; VDE
  • Operating Frequency: 50 to 60
  • Mounting: PCB/SMD
  • Input Voltage: 230
Toroidal Safety Isolating Transformer -- RKD 100/2x12 - Image
Toroidal Safety Isolating Transformer -- RKD 100/2x12
from Block USA, Inc.

Rated input voltage 2 x 115 Vac. Rated output voltage 2 x 12 - 2 x 115 Vac. Power 15 - 3000 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 98 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL... [See More]

  • Agency: UL
  • Input Voltage: 115
  • Operating Frequency: 50 to 60
  • Output Voltage: 12
Toroidal Safety Isolating Transformer -- RTE 100/2x12 - Image
View Datasheet
Toroidal Safety Isolating Transformer -- RTE 100/2x12
from Block USA, Inc.

Rated input voltage 230 Vac. Rated output voltage 2 x 12 - 2 x 35 Vac. Power 15 - 625 VA. Insulation class B. Maximum ambient temperature 40 °C. Efficiency up to 95 %. Degree of protection IP 00. Mains transformer. to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL... [See More]

  • Agency: UL
  • Input Voltage: 230
  • Operating Frequency: 50 to 60
  • Output Voltage: 12