Hard-Wired / Device Mount Three Phase Surge Suppressors
Last Updated: April 1, 2025
Description
Hard-wired or device mount three-phase surge suppressors are designed to protect electrical devices from voltage spikes by being directly mounted on or within the device they are meant to protect. These suppressors are integral components in safeguarding equipment from transient voltage surges that can cause damage or operational disruptions.
Working Principle
Three-phase surge suppressors work by diverting excess voltage away from the protected equipment during a surge event. They are connected to the electrical system and, upon detecting a surge, they channel the excess voltage into the grounding wire, preventing it from reaching and damaging the connected devices. This is particularly useful in three-phase power systems, which are commonly used in industrial settings due to their ability to provide a more stable and efficient power supply compared to single-phase systems. By mitigating voltage spikes, these suppressors help maintain the integrity and longevity of electrical equipment.
Applications
Hard-wired three-phase surge suppressors are commonly used in industrial environments where large motors and heavy machinery are prevalent. Specific examples include manufacturing plants, where they protect equipment such as conveyor systems and industrial pumps, and data centers, where they safeguard critical infrastructure from power surges that could lead to data loss or hardware damage.
Advantages over other Three Phase Surge Suppressors
One of the key advantages of hard-wired three-phase surge suppressors is their direct integration with the device they protect, which can offer more reliable protection compared to plugin or external suppressors. This integration can lead to improved performance in mitigating surges, as the suppressor is specifically tailored to the device's electrical characteristics.
Limitations
A limitation of hard-wired three-phase surge suppressors is that they require installation directly onto or within the device, which can be more complex and time-consuming compared to plugin models. Additionally, once installed, they may be less flexible in terms of relocation or reconfiguration, as they are designed for a specific setup.
Considerations
When considering the use of hard-wired three-phase surge suppressors, it is important to evaluate the initial installation costs, which can be higher due to the need for professional installation. Operating expenses are generally low, as these devices do not consume power during normal operation. Durability is typically high, but regular maintenance checks are recommended to ensure continued effectiveness. Replacement costs can vary depending on the specific model and the extent of any damage incurred during a surge event.
from MCG SURGE PROTECTION
MCG's rack-mount surge protectors (512H, 516H, etc.) are already internally con-. nected to the rack's metal framework. An additional ground wire is provided. for connection to the frame rack to insure continued excellent protection. [See More]
- Mounting: Wall/Panel; Device Mount
- Technology: Metal Oxide Varistor
from ASCO Power Technologies
The XRL Series utilizes uni-modular replaceable module design with Large Block 50kA Thermal Protected MOV ’s with surge current levels of 100kA, 150kA, 200kA, 250kA and 300kA per phase. FEATURES: UL 1449 Third Edition Listed. Directly Connected, Discrete Protection Elements Between All... [See More]
- Mounting: Device Mount
- Surge Current: 150000
- Technology: Metal Oxide Varistor
- Operating Temp: -13 to 140
from Surge Suppression Incorporated
Advantage panel Protection Series, Nema 1, Frequency Responsive Circuitry / Voltage Response Circuitry (Sine Wave Tracking) [See More]
- Mounting: Device Mount
- Operating Temp: 176
- Technology: Hybrid
- 3-Phase Configuration: Delta
from MCG SURGE PROTECTION
Features: 120LS: I peak=120,000A/Phase (8 x 20 μs waveform). UL1449 3rd Edition. NEMA LS1-1992. Three times redundant protection paths per phase. Employs new 40kA varistors with built in high-speed thermal disconnect. Solid copper bus bar construction. Field-replaceable modules. EMI/RFI noise... [See More]
- Mounting: Wall/Panel; Device Mount
- Surge Current: 120000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 8832
from ASCO Power Technologies
Our highest kA internal-mount SPD, the XWL Series utilizes uni-modular replaceable module design with Large Block 50kA Thermal Protected MOV ’s with surge current levels of 300kA, 400kA, and 500kA per phase. This unit is for those “Mission Critical ” environments. FEATURES: UL 1449... [See More]
- Mounting: Device Mount
- Surge Current: 300000
- Technology: Metal Oxide Varistor
- Operating Temp: -13 to 140
from Surge Suppression Incorporated
Advantage panel Protection Series, Nema 1, Frequency Responsive Circuitry / Voltage Response Circuitry (Sine Wave Tracking) [See More]
- Mounting: Device Mount
- Operating Temp: 176
- Technology: Hybrid
- 3-Phase Configuration: Delta
from MCG SURGE PROTECTION
Features: 120,000 amps per phase. UL1449 3rd Edition. Field-replaceable, high capability protection modules with lifetime replacement warranty. High performance, low inductance MicroZ ™ -installed cable. (Click here). Event counter and front panel LEDs for status indication. LED internal... [See More]
- Mounting: Wall/Panel; Device Mount
- Surge Current: 120000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 8100
from ASCO Power Technologies
Our H Series has one, replaceable module per phase and surge current levels of 120kA and 160kA per phase. Our lowest cost replaceable module product for “budget conscience ” projects. FEATURES: UL 1449 Third Edition Listed. 120kA & 160kA per phase ratings. Type 2 SPD – All UL... [See More]
- Mounting: Device Mount
- Surge Current: 120000 to 160000
- Technology: Metal Oxide Varistor
- Operating Temp: -40 to 149
from Surge Suppression Incorporated
Advantage panel Protection Series, Nema 1, Frequency Responsive Circuitry / Voltage Response Circuitry (Sine Wave Tracking) [See More]
- Mounting: Device Mount
- Operating Temp: 176
- Technology: Hybrid
- 3-Phase Configuration: Delta
from MCG SURGE PROTECTION
Features: 120,000 amps per phase. UL1449 3rd Edition. Field-replaceable, high capability protection modules with lifetime replacement warranty. 8 Ft. installed cable. Front panel LED's for status indication. LED internal diagnostics for on-site maintenance. Audible fault alarm with mute switch. All... [See More]
- Mounting: Wall/Panel; Device Mount
- Surge Current: 120000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 8100
from ASCO Power Technologies
With one, replaceable module per phase and surge current levels of 160kA and 240kA per phase, the XGA Series is a great fit for Service Entrance and Downstream applications. The XGA Features APT ’s Patented TranSafe ™ Circuitry. FEATURES: UL 1449 Third Edition Listed. 160kA & 240kA... [See More]
- Mounting: Device Mount
- Surge Current: 160000 to 240000
- Technology: Metal Oxide Varistor
- Operating Temp: -40 to 149
from Surge Suppression Incorporated
Individual Circuit Split and Three Phase Protection Series [See More]
- Mounting: DIN Rail (optional feature); Device Mount; In-line or Integrally Attached
- Wires: 4-Wire
- Technology: Hybrid
- Voltage: 120/240
from MCG SURGE PROTECTION
Features: 200,000 amps per phase. UL1449 3rd Edition. Independent lab tested modules. NEMA LS 1 Tested. Redundant modular protection withstands multiple lightning strikes. Solid copper bus bar construction for minimal impedance and enhanced current sharing. High performance, low inductance. Micro-Z... [See More]
- Mounting: Wall/Panel; Device Mount
- Surge Current: 200000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 11000
from Surge Suppression Incorporated
Medium Voltage Panel Protection Series [See More]
- Mounting: Device Mount
- Voltage: 2500 Vrms L-L
- Technology: Hybrid
- Standards: ISO 9001:2005
from MCG SURGE PROTECTION
Features: 200,000 amps per phase, 8x20 us. Date & time of last event it handled/diverted displayed. Independent lab tested modules. UL1449 3rd Edition. NEMA LS 1. Redundant modular protection withstands multiple lightning strikes. Solid copper bus bar construction for minimal impedance and... [See More]
- Mounting: Wall/Panel; Device Mount
- Surge Current: 200000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 13200
from MCG SURGE PROTECTION
Features: 400,000 Amps per phase 8x20 us. Date & time of last event it handled/diverted displayed. Independent lab tested modules. UL1449 3rd Edition. NEMA LS 1 Tested. High capability redundant modular protection withstands multiple lightning strikes. Solid copper bus bar construction for... [See More]
- Mounting: Wall/Panel; Device Mount
- Surge Current: 400000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 24300
from MCG SURGE PROTECTION
Features: I peak=120,000A/Phase (8 x 20 μs waveform). UL1449 3rd Edition Listed. Triple redundant - three fused surge paths/phase. Remote 1 Form C relay contacts with status LED. Neutral to Ground voltage monitor. Front panel protection status LEDs. Low profile design. All modes protected. [See More]
- Mounting: Wall/Panel; DIN Rail (optional feature); Device Mount
- Surge Current: 120000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 8100
from MCG SURGE PROTECTION
Features: I peak=160,000A/Phase (8 x 20 μs waveform). UL1449 3rd Edition Listed. Triple redundant - three fused surge paths/phase. Remote 1 Form C relay contacts with status LED. Neutral to Ground voltage monitor. Front panel protection status LEDs. Low profile design. All modes protected. [See More]
- Mounting: Wall/Panel; DIN Rail (optional feature); Device Mount
- Surge Current: 160000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 10300
from MCG SURGE PROTECTION
Features: I peak=250,000A/Phase (8 x 20 μs waveform). UL1449 3rd Edition Listed. Triple redundant - three fused surge paths/phase. Remote 1 Form C relay contacts with status LED. Neutral to Ground voltage monitor. Front panel protection status LEDs. Low profile design. All modes protected. [See More]
- Mounting: Wall/Panel; DIN Rail (optional feature); Device Mount
- Surge Current: 250000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 14720
from MCG SURGE PROTECTION
Features: I peak=40,000A/Phase (8 x 20 μs waveform). UL1449 3rd Edition Listed. Remote 1 Form C relay contacts with status LED. Neutral to Ground voltage monitor. Front panel protection status LEDs. Low profile design. All modes protected. Filtering standard. Thermally protected MOVs. 20 Year... [See More]
- Mounting: Wall/Panel; DIN Rail (optional feature); Device Mount
- Surge Current: 40000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 2940
from MCG SURGE PROTECTION
Features: I peak=80,000A/Phase (8 x 20 μs waveform). UL1449 3rd Edition Listed. Remote 1 Form C relay contacts with status LED. Neutral to Ground voltage monitor. Front panel protection status LEDs. Low profile design. All modes protected. Filtering standard. Thermally protected MOVs. 20 Year... [See More]
- Mounting: Wall/Panel; DIN Rail (optional feature); Device Mount
- Surge Current: 80000
- Technology: Metal Oxide Varistor
- AC Energy Absorption: 5150