Siemens 3RH5921-1CA01 Auxiliary Switch Block, 1 NC, Front Mounting, Screw Terminal, EN 50005

The Siemens SIEMENS 3RH5921-1CA01 belongs to the SIRIUS 3RH59 series of pre-mounted auxiliary contact blocks (auxiliary switch module), featuring 1 normally closed (1NC) instantaneous contact, single-pole structure, in compliance with DIN EN 50005 standard, with screw terminal wiring. It is used for snap-in installation on the front of 3RT5 and 3RT6 series motor contactors, to extend control circuit contacts, achieve status feedback, interlock and signal indication. The rated working current for AC-15/230V is 6A, for AC-12 it is up to 10A, the insulation voltage is 690V, the impact voltage is 6kV, and the protection class is IP20. The contact reliability is only 1 failure switch per 100 million times (17V/1mA), and the mechanical life is approximately 10 million times. The dimensions are 10mm wide, 38mm high, and 51mm deep. The operating temperature range is -25 to +60℃. It has passed certifications such as CCC, CE, UL, and CSA.