3RH2911-1HA01

The 3RH2911-1HA01 is a 1-pole auxiliary contact block from Siemens' SIRIUS 3RH29 series, engineered to expand control circuit logic, status feedback, and signaling capabilities for 3RT2 contactors and 3RH2 control relays. Designed for front-face snap-on mounting, this compact accessory adds an extra auxiliary contact operating up to for industrial automation and motor control circuits. Electrically, the 3RH2911-1HA01 features a 1NC (1 Normally Closed) contact configuration rated for heavy-duty control circuit duty (). Utilizing high-reliability silver-alloy contacts with low contact resistance, it delivers precise signal switching for electrical interlocking, safety trip indication, and status monitoring to PLCs and control systems, maintaining consistent contact integrity across both low and standard control currents. Mechanically, the 3RH2911-1HA01 is housed in a compact, flame-retardant casing designed for toolless front mounting onto Size S00 to S3 SIRIUS contactors via an integrated snap-on locking clip. Equipped with touch-safe IP20 screw terminals and standardized terminal numbering, it enables quick wiring access and clean conductor management inside space-constrained control panels without expanding the lateral footprint of the main contactor. Purchase the 3RH2911-1HA01 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted auxiliary contact blocks, magnetic contactors, and motor controls from top manufacturers like Siemens, Eaton, Cutler-Hammer, and Schneider Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.