General description These heavy-duty 12V 30A SPST relays are designed for various automotive applications, including electric cooling fans, fuel pumps, water pumps, door handle solenoids, trunk solenoids, and horns. With a mechanical life of over 10,000 cycles, these relays ensure reliable performance and durability. Technical specifications Voltage: 12V Current: 30A Type: SPST (Single Pole Single Throw) Pin configuration: 4 Pin Mechanical life: 10,000+ cycles Measurement error: +/- 1-3 cm Compatibility and accessories Includes: 10 x 30A Relays (4 Pin)