MSD's Solid-State Relay with harness is built for electric fuel pumps, water pumps, and cooling fans. The high-power controlled circuit handles 30 amps momentary and 20 amps continuous at 12VDC, energized by a low-power activation circuit. Because it has no moving parts, the solid-state design reacts faster than a mechanical relay and holds up better against shock, vibration, and moisture.
Specifications:
- Category: Electrical, Lighting and Body
- Part Type: Multi-Purpose Relay
- Product Type: Relays
- Configuration: SPST Normally Open
- Continuous Load: 20 Amp
- Max Inrush Load: Overload protected at 80A
- Nominal Voltage: 12-Volts
- Max Coil Voltage: 16-Volts
- Harness: 14 AWG pigtail leads, 11" long
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 89612
FAQ
What is the continuous amperage rating of the MSD Solid State N/O Relay?
20 amps continuous, with 30 amps momentary handling.
What voltage range does this relay support?
A 12-volt nominal system with up to 16-volt max coil voltage.
What comes with the relay?
A pigtail harness with 11-inch, 14-gauge leads.
What applications is this relay suited for?
Electric fuel pumps, water pumps, and cooling fans.
Why choose a solid-state relay over a standard mechanical relay?
It has a faster activation circuit and no moving parts to wear, making it less sensitive to shock, vibration, and moisture.

