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

Overview

The Siemens 3RH2911-1HA21 is a high-performance, front-mounted auxiliary switch block from the SIRIUS modular system, specifically designed to expand the control circuit capabilities of 3RT2 power contactors and 3RH2 contactor relays. This instantaneous contact block features a reliable 2 NO (Normally Open) + 1 NC (Normally Closed) contact configuration, making it ideal for signaling and interlocking applications in industrial automation. Its snap-on front mounting and screw terminals ensure quick, tool-free, and secure installation.

Key Features & Functions

• Type: Front-mounted auxiliary switch

• Contact Configuration: 2 NO + 1 NC

• Current Path: 1 NC, 2 NO

• Connection Type: Screw terminal for secure and reliable wiring

• Compatibility: Designed for Siemens 3RT2 contactors and 3RH2 contactor relays

• Durability: Industrial-grade components for long-lasting performance

Benefit

• Seamless Integration: Part of the SIRIUS modular system, ensuring perfect compatibility and easy integration with Siemens 3RT2 contactors and 3RH2 contactor relays.
• Quick Installation: Front snap-on mounting allows for simple, tool-free assembly, significantly reducing downtime and labor costs.
• High Reliability: Features robust screw terminals for a secure electrical connection, ensuring long-term operational stability.
• Increased Functionality: Instantly expands the number of auxiliary contacts for enhanced signaling, interlocking, and feedback functions in control circuits.
• Safety Compliance: Designed as positively driven contacts (Mirror contact function possible with 3RT2), meeting high safety standards like IEC 60947-5-1.

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