SIEMENS 3RH1140-2BB40 3RT1916-1BB00

Siemens SIRIUS Contactor Relay 3RH1140-2BB40 Description This is a used but fully functional Siemens SIRIUS contactor relay, model 3RH1140-2BB40. It is a size S00 auxiliary contactor designed for reliable switching of control circuits. This unit operates with a 24V DC coil and provides four normally open (4NO) contacts. It comes complete with a 3RT1916-1BB00 surge suppressor with LED, providing extra protection for your control system. Ideal for maintenance, repair, and operations (MRO) to keep legacy systems running smoothly. Specifications Manufacturer: Siemens Type: 3RH1140-2BB40 Series: SIRIUS Coil Voltage: 24V DC Contacts: 4 Normally Open (4NO) Size: S00 Connection Type: Screw terminals Included Accessory: 3RT1916-1BB00 Surge Suppressor Label Info le AC-12: 10 A Ui: 690V AC-15 @ 230V: 6 A Standards: IEC 60947, VDE 0660 Application This contactor relay is commonly used in industrial automation for interlocking, signaling, and control functions within motor control centers, PLC systems, and various machine control panels. Country of Origin Made in Germany. CO2 Impact By purchasing this pre-owned component, you are contributing to the circular economy and have helped avoid approximately 8.8 kg of CO2 emissions associated with the production of a new part. Availability This item is a used, tested, and functional component. Available for immediate dispatch. Order now from profideals for expert support and fast delivery. FAQ Is this 3RH1140-2BB40 a direct replacement for a relay with an AC coil? No, this model has a 24V DC coil. You must use a relay with the correct coil voltage and type (AC or DC) that matches your control circuit specifications to prevent damage. What is the purpose of the small black module (3RT1916-1BB00) on top? This is a surge suppressor (varistor with LED). It is designed to protect the control circuit, particularly PLC outputs, from voltage spikes that can occur when the relay’s coil is de-energized. Can I add more auxiliary contacts to this relay? Yes, the Siemens SIRIUS S00 series allows for front-mounted auxiliary contact blocks to be snapped on, expanding the number of available contacts for your application. Last Update: Friday, March 13, 2026 profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.