Siemens 3RH2911-2HA22

This auxiliary switch is designed for front mounting and includes 2 normally open (NO) and 2 normally closed (NC) contacts. The current paths are configured as 1 NC, 1 NC, 1 NO, and 1 NO. It is compatible with S00 and S0 sizes and utilizes spring-loaded terminal connections for efficient wiring.

The device operates within a temperature range of -25 to +60 °C and supports an electrical endurance of up to 200,000 operating cycles at AC-15, rated at 230 V. With a mechanical service life of approximately 10 million cycles, it is engineered for reliability in demanding environments. The insulation voltage rating is 690 V, while the device is rated IP20 for protection class.

Installation is facilitated through snap-on mounting, with dimensions measuring 41.5 mm in height, 36 mm in width, and 47.7 mm in depth. The auxiliary switch adheres to safety standards outlined in IEC 60947-4-1 and IEC 60947-5-1, ensuring positively driven operation and mirror contact functionality. This unit's design supports a variety of conductor sizes from 0.5 to 2.5 mm², allowing for flexible wiring options.