50A latching relay with 12V coil

These monster relays are designed to switch high current AC loads using a simple pulse of 12V DC to flip the relay from open to closed.

They have dual coils, so you can toggle the relay by pulsing the two coils alternately (middle pin is common) or simply drive one coil by reversing the polarity.

The relays also have a toggle bar on the top to not only indicate the condition of the relay, but also to allow you to switch the relay manually.

All in all, a very versatile device.

Part number HFE10-2-12-HT-L2, contacts are rated to 50A, 277V AC. Measures 39mm long x 33mm high x 14.5mm wide, not including pins.