Siemens 3RH2911-2HA21 Auxiliary Switch, Front Mount, 2 NO + 1 NC for 3RT2 Contactors & 3RH2 Contactor Original Brand New

Overview

The Siemens SIRIUS 3RH2911-2HA21 is a high-performance front-mounting auxiliary switch block designed for seamless integration with SIRIUS 3RT2 Power Contactors and SIRIUS 3RH2 Contactor Relays. This essential accessory expands the switching capabilities of your contactors by providing additional auxiliary contacts for control and signaling circuits. It features a configuration of 2 Normally Open (NO) and 1 Normally Closed (NC) instantaneous contacts, clearly marked with terminal designations .1/.2, .3/.4, .3/.4. The use of spring-loaded terminals ensures fast, reliable, and vibration-proof wiring, significantly reducing installation time.

Key Benefit

• Enhanced Control Functionality: Easily add the required control and signaling contacts (2 NO + 1 NC) to your main contactors and contactor relays.
• Rapid, Reliable Wiring: Spring-loaded terminal technology minimizes wiring time and offers exceptional connection reliability, even in high-vibration environments.
• Optimized Compatibility: Specifically engineered for perfect mechanical and electrical fit with the popular Siemens 3RT2 and 3RH2 series (Sizes S00, S0, S2, S3).
• Space-Saving Design: Front-mounting installation ensures the auxiliary block does not increase the width of the main device, maintaining a compact panel layout.
• SIRIUS Quality: Rely on the proven performance, durability, and global availability of the Siemens SIRIUS industrial control system.

Functions & Features

• Contact Configuration: 2 NO + 1 NC

• Connection Points: .1/.2, .3/.4, .3/.4, –/–

• Current Path: 1 NC, 1 NO, 1 NO, —

• Terminal Type: Spring-loaded for secure and reliable connection

• Mounting: Front-mounted for easy integration

• Compatible Devices: Siemens 3RT2 contactors and 3RH2 contactor relays

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