Single Pole, Single Throw (SPST) Time Delay Relays
Reviewed by: Jon Lowy, consulting engineer
Description
A Single Pole, Single Throw (SPST) Time Delay Relay is a type of relay that controls a single circuit with an on-off switch mechanism. It is designed to delay the activation or deactivation of its contacts for a predetermined period after the control signal is applied or removed. This relay typically has two terminals and operates as a simple on-off switch, making or breaking the connection of a single conductor in a single branch circuit.
Working Principle
The SPST Time Delay Relay operates by delaying the change in state of its contacts after receiving a control signal. When power is applied to the relay, the contacts change position immediately and remain in this new position for the preset time delay. After the time delay has elapsed, the contacts return to their original position. This delay mechanism is useful for applications requiring a timed response to a control signal, ensuring that the circuit remains in its new state for a specific duration before reverting.
Applications
SPST Time Delay Relays are used in various applications where timed control of a single circuit is required. Specific examples include:
- Lighting Control: Delaying the turn-off of lights in stairwells or hallways to ensure safe passage.
- Motor Control: Providing a delay before starting or stopping motors to prevent mechanical stress.
- Heating Systems: Delaying the activation of heating elements to avoid sudden power surges.
- Industrial Automation: Timing sequences in manufacturing processes to ensure proper operation of machinery.
Advantages over other Time Delay Relays
SPST Time Delay Relays offer several advantages over other types of time delay relays:
- Simplicity: With only one pole and one throw, SPST relays are simpler to understand and implement compared to more complex relays like SPDT or DPDT.
- Cost-Effectiveness: Due to their simpler design, SPST relays are generally less expensive than multi-pole or multi-throw relays.
- Reliability: Fewer components and simpler operation often result in higher reliability and lower failure rates.
Limitations
Despite their advantages, SPST Time Delay Relays have some limitations:
- Limited Functionality: They can only control a single circuit, which may not be sufficient for applications requiring multiple circuits or more complex control schemes.
- Fixed Timing: The preset time delay may not be adjustable in some models, limiting flexibility in applications requiring variable timing.
- Reset on Power Loss: Most SPST Time Delay Relays reset when power is lost, which can be a drawback in applications where maintaining the state during power interruptions is critical.
Considerations
When selecting and using SPST Time Delay Relays, several factors should be considered:
- Initial Costs: SPST relays are generally cost-effective, but the initial cost can vary based on the specific model and features.
- Operating Expense: These relays typically have low operating expenses due to their simple design and low power consumption.
- Durability: The durability of SPST relays can vary, but they are generally robust and reliable for most applications.
- Accuracy: The timing accuracy of SPST relays is usually sufficient for general applications, but high-precision timing may require more advanced models.
- Replacement and Maintenance Costs: Maintenance is minimal for SPST relays, but replacement costs should be considered if the relay is used in a high-wear environment.
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.001 Sec ~ 999.9 Hrs Delay 0.1A @ 30VDC Panel Mount [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.001 Sec ~ 999.9 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from Allen-Bradley / Rockwell Automation
700-HR General Purpose Dial Timing Relay, Star Delta Timer, Star Delta, 0.5 seconds to 120.0 seconds, 100...120V AC 50/60Hz [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Timer Type: ON-Delay; Star Delta Timer
from RS Components, Ltd.
H5CX Series of ultra-compact digital timers provide advanced functions and security settings to suit your timing needs. Supply Voltage = 12 - 24 V ac/dc. Time Range = 0.001 s - 9999 h. Mode of Operation = Cumulative, Interval, ON/OFF Duty Adjustable Flicker, Power ON Delay I, Power ON Delay II... [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST
- Function Type: Multi-function
- Timer Type: ON-Delay; Off-Delay; Interval
- Minimum: 1.00E-3
from Finder S.p.A. con unico socio
Type 12.11 Mechanical time switches , daily *, with 1 NO 16 A contact, Width 17.6 mm. 35 mm rail (EN 60715) mounting. * Same program for each day. Features include: Shortest programming interval: 15 min (12.11) [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Contact Configuration: Normally Open (NO)
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.001 Sec ~ 999.9 Hrs Delay 0.1A @ 30VDC Socketable [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.001 Sec ~ 999.9 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from RS Components, Ltd.
Temporary holiday setting function makes it easy to turn OFF output for holidays and non-operating days. Settings can be made even with the Time Switch turned OFF. Test mode enables easy program checking. Includes summer time (DST) adjustment. Yearly models also offer automatic switching to DST. Set... [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPNO
- Contact Configuration: Normally Open (NO)
- Number of Contacts: 1
- Operating Temperature: 14
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.001 Sec ~ 999.9 Hrs Delay 0.1A @ 30VDC Socketable [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.001 Sec ~ 999.9 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.01 Sec ~ 9999 Hrs Delay 0.1A @ 30VDC Panel Mount [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.01 Sec ~ 9999 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
RELAY TIME DELAY CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: Recycle
- Contact Configuration: Normally Open (NO)
from DigiKey
RELAY TIME DELAY 60FPM CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: Recycle
- Time Ranges: Fixed, 60 FPM
from DigiKey
RELAY TIME DELAY 10SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: One-Shot
- Time Ranges: 0.1 Sec ~ 10 Sec
from DigiKey
RELAY TIME DELAY 1023SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: Interval
- Time Ranges: 1 Sec ~ 1023 Sec
from DigiKey
RELAY TIME DELAY 0.7 SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: ON-Delay
- Time Ranges: Fixed, 0.7 Sec
from DigiKey
RELAY TIME DELAY 3SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: ON-Delay
- Time Ranges: Fixed, 3 Sec
from DigiKey
RELAY TIME DELAY 10230SEC CHAS [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: ON-Delay
- Time Ranges: 10 Sec ~ 10230 Sec
from DigiKey
RELAY TIME DELAY 1023SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: Interval
- Time Ranges: 1 Sec ~ 1023 Sec
from DigiKey
RELAY TIME DELAY 0.25SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: One-Shot
- Time Ranges: Fixed, 0.25 Sec
from DigiKey
RELAY TIME DELAY 30SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: ON-Delay
- Time Ranges: Fixed, 30 Sec
from DigiKey
RELAY TIME DELAY 5SEC CHAS MT [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: ON-Delay
- Time Ranges: Fixed, 5 Sec
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 6 Hrs Delay 2A @ 240VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.1 Sec ~ 6 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 6 Hrs Delay 2A @ 24VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.1 Sec ~ 6 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 24 Hrs Delay 1A @ 240VAC/24VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.1 Sec ~ 24 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Contact Configuration: Normally Open (NO)
- Function Type: Multi-function
- Mounting: Din Rail
from DigiKey
Off-Delay Time Delay Relay SPST-NO (1 Form A) 0.01 Sec ~ 0.1 Sec Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: Off-Delay
- Time Ranges: 0.01 Sec ~ 0.1 Sec
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Contact Configuration: Normally Open (NO)
- Function Type: Multi-function
- Mounting: Din Rail
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 300 Min Delay 2A @ 30VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.1 Sec ~ 300 Min
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 300 Min Delay 1A @ 240VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.1 Sec ~ 300 Min
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
Time Delay Relay Delay [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.05 Sec ~ 100 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from DigiKey
Time Delay Relay Delay [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Time Ranges: 0.05 Sec ~ 100 Hrs
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from Airotronics
TBC timers are solid state output units with digital timing and come in a 15/8" square case. Ease of installation and hook-up is a primary design benefit. All models are available with integral time adjustment knob or factory-fixed time, and require only three connections. [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: ON-Delay
- Time Range: Single Time Range; Multiple Time Ranges (optional feature); Field Selectable (optional feature)
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Contact Configuration: Normally Open (NO)
- Function Type: Multi-function
- Mounting: Din Rail; DIN Rail
from Airotronics
TBK timers are solid state output units with digital timing and come in a 1 5?8" square case. They are available for 8-40 VDC. Ease of installation and hook-up is a primary design benefit. All models are available with integral time adjustment knob or factory-fixed time, and require only three... [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Multi-function
- Timer Type: ON-Delay; Off-Delay; Recycle
- Time Range: Single Time Range; Multiple Time Ranges (optional feature); Field Selectable (optional feature)
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Contact Configuration: Normally Open (NO)
- Function Type: Multi-function
- Mounting: Din Rail; DIN Rail
from Airotronics
TBKA timers are solid state output units with digital timing and come in a 1 5?8" square case. They are available only for 8-40 VDC. Ease of installation and hook-up is a primary design benefit. All models are available with integral time adjustment knob or factory-fixed time, and require only three... [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Multi-function
- Timer Type: ON-Delay; Off-Delay; Recycle
- Time Range: Single Time Range; Multiple Time Ranges (optional feature); Field Selectable (optional feature)
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) Fixed, 15 Sec Delay 10A @ 240VAC Socketable [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Time Ranges: Fixed, 15 Sec
- Function Type: Multi-function
- Contact Configuration: Normally Open (NO)
from Airotronics
TBL timers are solid state output units with digital timing and come in a 1 5?8" square case. They are available for 8-40 VDC. Ease of installation and hook-up is a primary design benefit. All models with integral time adjustment knob or factory-fixed time require only three connections. [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: Interval; Recycle
- Time Range: Single Time Range; Multiple Time Ranges (optional feature); Field Selectable (optional feature)
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.05 Sec ~ 100 Hrs Delay 1A @ 250VAC/24VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.0500
- Function Type: Multi-function
- Maximum: 100
from Airotronics
THC timers are solid state output units with digital timing. The THC comes in a 2" square case. Ease of installation and hook-up is a primary design benefit. All models with integral time adjustment knob or factory-fixed time require only two connections. They may be wired in-line just like a single... [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: ON-Delay
- Time Range: Single Time Range; Multiple Time Ranges (optional feature); Field Selectable (optional feature)
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.05 Sec ~ 100 Hrs Delay 1A @ 250VAC/24VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.0500
- Function Type: Multi-function
- Maximum: 100
from Airotronics
THL timers are solid state output units with digital timing. The THL comes in a 2" square case. Ease of installation and hook-up is a primary design benefit. All models with integral time adjustment knob or factory-fixed time require only two connections. They may be wired in-line just like a single... [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST)
- Function Type: Single Function
- Timer Type: Interval; Recycle
- Time Range: Single Time Range; Multiple Time Ranges (optional feature); Field Selectable (optional feature)
from Quarktwin Technology Ltd.
On-Delay Time Delay Relay SPST-NO (1 Form A) 0.05 Sec ~ 240 Sec Delay DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.0500
- Timer Type: ON-Delay
- Maximum: 0.0667
from Quarktwin Technology Ltd.
On-Delay Time Delay Relay SPST-NO (1 Form A) 0.05 Sec ~ 240 Sec Delay DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.0500
- Timer Type: ON-Delay
- Maximum: 0.0667
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 20 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0056
- Minimum: 1
- Time Ranges: 1 Sec ~ 20 Sec
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 20 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0056
- Minimum: 1
- Time Ranges: 1 Sec ~ 20 Sec
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 20 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0056
- Minimum: 1
- Time Ranges: 1 Sec ~ 20 Sec
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 20 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0056
- Minimum: 1
- Time Ranges: 1 Sec ~ 20 Sec
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 3 Sec ~ 60 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0167
- Minimum: 3
- Time Ranges: 3 Sec ~ 60 Sec
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 3 Sec ~ 60 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0167
- Minimum: 3
- Time Ranges: 3 Sec ~ 60 Sec
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 3 Sec ~ 60 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0167
- Minimum: 3
- Time Ranges: 3 Sec ~ 60 Sec
from Quarktwin Technology Ltd.
Star Delta Controller Time Delay Relay SPST-NO (1 Form A) 3 Sec ~ 60 Sec Delay 3A @ 250VAC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 0.0167
- Minimum: 3
- Time Ranges: 3 Sec ~ 60 Sec
from Quarktwin Technology Ltd.
Time Delay Relay SPST-NO (1 Form A) 5 Sec ~ 8 Hrs Delay Chassis Mount [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Maximum: 8
- Minimum: 5
- Time Ranges: 5 Sec ~ 8 Hrs
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) Delay Chassis Mount [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Contact Configuration: Normally Open (NO)
- Function Type: Multi-function
- Mounting: Chassis Mount
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0 Sec ~ 15 Hrs Delay Chassis Mount [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.0
- Function Type: Multi-function
- Maximum: 15
from Quarktwin Technology Ltd.
Off-Delay Time Delay Relay SPST-NO (1 Form A) Fixed, 0.05 Sec Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Time Ranges: Fixed, 0.05 Sec
- Timer Type: Off-Delay
- Contact Configuration: Normally Open (NO)
from Quarktwin Technology Ltd.
On-Delay Time Delay Relay SPST-NO (1 Form A) Fixed, 1 Sec Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Time Ranges: Fixed, 1 Sec
- Timer Type: ON-Delay
- Contact Configuration: Normally Open (NO)
from Quarktwin Technology Ltd.
Off-Delay Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 100 Sec Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 1
- Timer Type: Off-Delay
- Maximum: 0.0278
from Quarktwin Technology Ltd.
On-Delay Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 100 Sec Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 1
- Timer Type: ON-Delay
- Maximum: 0.0278
from Quarktwin Technology Ltd.
On-Delay Time Delay Relay SPST-NO (1 Form A) 0.01 Sec ~ 0.1 Sec Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.0100
- Timer Type: ON-Delay
- Maximum: 2.78E-5
from Quarktwin Technology Ltd.
Off-Delay Time Delay Relay SPST-NO (1 Form A) 0.01 Sec ~ 0.1 Sec Delay 0.1A @ 48VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.0100
- Timer Type: Off-Delay
- Maximum: 2.78E-5
from Quarktwin Technology Ltd.
Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 300 Min Delay 2A @ 30VDC DIN Rail [See More]
- Pole and Throw Specifications: Single Pole, Single Throw (SPST); SPST-NO (1 Form A)
- Minimum: 0.1000
- Function Type: Multi-function
- Maximum: 5