Jaycar 30A SPDT Relay – PCB Mount, Standard Size, High-Current Switching | SY4072

Need to switch a load between two circuits instead of just on and off? This SPDT relay does exactly that at 30A. It's the PCB version of the standard horn-type relay, so you solder it straight onto your board rather than bolting it to a bracket. Auto horns were the original job, but the same contacts drive burglar alarm outputs, ignition cutouts, transmitters, and car spotlights just fine. Standard size footprint means it slots into existing layouts without a redesign

• 30A contact rating for high-current switching in automotive and security circuits
• SPDT (single pole double throw) for two-circuit switching from one coil
• PCB-mount form factor — solder directly, no bracket needed
• Standard-size footprint compatible with common relay sockets and layouts