2 Pack 4 Pin 12V Car Relay 40 Amp JD2912-1H-12VDC Heavy Duty Auto Switch Harness Ready 14VDC Compatible For Starter Systems Dome Light Supervision Trunk Release Polarity Change Power Door Locks

High-Current 12V Car Relay 2-Pack for JD2912-1H-12VDC
✔️ 2x 4-pin 12V relays, 40A rating, heavy-duty auto switch

Two-pack of 12V automotive relays with 4 pins and a 40A rating, designed to swap high-current circuits in vehicles. Perfect for starter systems, dome light supervision, trunk release, polarity change, power door locks, alarms, and more. This pair uses AgSnO12 contacts for reliable performance and long life.

✅ Coil Voltage: 12VDC
✅ Coil Resistance: 80 ohm
✅ Contact Material: AgSnO12
✅ Contact Form: 1Z(C)/1H(A)
✅ Contact Rating: 40A 72VDC
✅ Max Switching Power: 560W
✅ Mechanical Life: 10,000,000 operations
✅ Electrical Life: 100,000 operations (30 ops/min)
✅ Operating Temperature: -30°C to +80°C
✅ Humidity: 40% to 85% RH
✅ Weight: approx 35 g

💡 What is a 12V automotive relay used for in car electrical systems?

Relays are handy devices that allow a low-current control signal to switch a high-current circuit, protecting sensitive electronics. - Handy for starter circuits, lights, and actuators - Provides isolation between control and load - Useful for trunk release and door-lock control