3957_0 DC Solid State Relay - 120V 25A
- Buy 5 for £26.32 £21.93 each and save 10%
- Buy 10 for £25.66 £21.38 each and save 12%
- Buy 50 for £23.89 £19.91 each and save 18%
- Buy 100 for £22.45 £18.71 each and save 23%
The 3957_0 DC Solid State Relay can be used to switch loads of up to 80A at 50VDC using the digital output from a Phidget I/O board.
Package includes:
- A heat transfer pad
- A 10A02-T Diode
If you need to switch DC power, this solid state relay is the perfect mix of quality and affordability. Using the digital outputs from a Phidgets device, you can control the relay to silently switch a DC circuit at 120V/25A or less. There's an indicator LED on the control side of the circuit so you can tell the state of the relay at a glance.
If your SSR is overheating, you should consider getting a heat sink for safety. See below for a list of compatible heatsinks. This SSR comes with a heat transfer pad that can be placed between the metal base of the SSR and the surface it's mounted to in order to help encourage heat flow. It also comes with a diode that can be used to protect your SSR against back EMF.
Electrical Properties
| Isolation Method | Photoelectric |
| Dielectric Strength | 2.5 kV AC |
| Control Voltage Min | 3 V DC |
| Control Voltage Max | 32 V DC |
| Load Voltage Min (DC) | 5 V DC |
| Load Voltage Max (DC) | 120 V DC |
| Load Current Max (DC) | 25 A |
| Load Surge Current | 100 A |
| Turn-on Time Max | 2 ms |
| Turn-off Time Max | 2 ms |
Physical Properties
| Length | 57 mm |
| Width | 43 mm |
| Height | 25 mm |
| Operating Temperature Min | -20 °C |
| Operating Temperature Max | 80 °C |
Other Properties
| Manufacturer Part Number | KG1025D |
