Siemens Auxiliary Contact, 4 Contact, 4 NO, 3RH2, Snap-On, 10 A, 250 V dc, 690V ac, 3RH2911-1FA40

Install this auxiliary contact from Siemens to supplement primary switching equipment for the optimal performance of your applications. It's an electromechanical device with four normally open poles. This setup increases the flow and level of electricity to effectively power more demanding operations. You can use it in conjunction with components like contactors, circuit breakers, switches and relays to manage excess current and protect linked systems from damage. Screw termination firmly secures contacts and conductors so they won't loosen or malfunction when subjected to jolts and vibrations. Use this device with push button controllers, relay-logic solid-state electronics and motor control schemes

• Snap-on mounting allows for quick and easy assembly on the front of primary switches

Yes, it's safe to handle this unit. It has an ingress protection rating of IP20, which means it's finger-proof to protect you against electric shocks. You should always disconnect power supplies when working with electrical equipment for increased safety.