Are you looking for a reliable, cost-effective replacement auxiliary relay for your industrial control panel? We offer this genuine Siemens 3RH1122-1BB40 contactor relay in used but like-new condition. Our technical team thoroughly cleaned, inspected, and tested this specific S00-sized unit. Therefore, we guarantee that it will drop right into your automated circuit and match original factory performance benchmarks.

The Siemens SIRIUS 3RH1 classic series delivers legendary engineering durability in low-voltage control circuits. However, because the manufacturer discontinued this older 3RH1 line, sourcing pristine replacement stock grows increasingly difficult over time. Sourcing this tested, like-new unit protects you from the massive, unnecessary expense of a complete control panel redesign. Consequently, you can secure factory-floor reliability while keeping your maintenance costs exceptionally low.