500A 12V Battery Isolator Relay – Heavy Duty 4 Pin Normally Open Starter Solenoid

Need to manage multiple batteries or handle some serious current?

This 500-amp continuous duty relay is what you're looking for.

It's a 12V, normally open (NO) 4-pin solenoid, often used as a battery isolator or a heavy-duty starter relay.

It's a generic, unbranded part, but it's built to handle the high current demands of automotive, marine, or RV applications.

Perfect for isolating a secondary battery so you don't get stuck with a dead starter battery, or for any project where you need to switch a massive electrical load.

It's a new, no-frills component that just works.

Get your electrical system wired up right.