Siemens 3RH2911-2HA12-0KT0 Front Aux Switch, 1NO+2NC, Spring Original Brand New

Overview

The Siemens 3RH2911-2HA12-0KT0 is a high-performance front-mounted auxiliary switch block from the SIRIUS modular system, specifically designed to expand the auxiliary contacts of 3RT2 power contactors and 3RH2 contactor relays. This essential control circuit component features a robust configuration of 1 Normally Open (NO) and 2 Normally Closed (NC) instantaneous contacts, providing precise signaling and interlocking functions.

Its key benefit is the reliable, vibration-proof, and time-saving spring-loaded terminal connection technology, allowing for quick, tool-free installation directly onto the front of compatible contactors (size S00 up to S3).

Key Product Detail

• Product Number: 3RH2911-2HA12-0KT0
• Brand: Siemens SIRIUS
• Product Type: Auxiliary Switch Block (Front-Mounted)
• Contact Configuration: 1 NO + 2 NC (Instantaneous Contacts)
• Terminal Designation (IEC): 21/22, 31/32, 43/44
  • Note: Current path contacts are 1 NC, 1 NC, 1 NO.
• Connection Type: Spring-Loaded Terminals (Screwless)
• Compatibility: For Siemens 3RT2 Contactors and 3RH2 Contactor Relays
• Installation: Quick snap-on mounting on the front side.
• Protection Class: IP20 (on the front)
• Rated Insulation Voltage (Ui): 690 V (Degree of pollution 3)
• Mechanical Operating Cycles (Typical): 10,000,000
• Safety Features: Suitable for use as a mirror contact (acc. to IEC 60947-4-1 with 3RT2) and supports positively driven operation (acc. to IEC 60947-5-1 with 3RH2).

Benefit

1. Reliable Control: Provides additional, high-fidelity contacts (1 NO / 2 NC) for sophisticated control and feedback circuits.
2. Fast & Secure Wiring: The innovative spring-loaded terminal design ensures a secure, vibration-resistant connection without the need for periodic tightening, significantly reducing installation time and maintenance effort.
3. Seamless Integration: Part of the trusted Siemens SIRIUS modular system, ensuring perfect mechanical and electrical fit with 3RT2 contactors and 3RH2 relays.
4. High Durability: Exceptional mechanical life of 10 million operating cycles guarantees long-term operational reliability in industrial environments.
5. Enhanced Safety: Compliant with industry standards for mirror and positively driven contacts, crucial for safety-related applications.

For more of our high-quality industrial automation and control products, including the full range of Siemens SIRIUS components, visit Turll today!