3RH2921-2DA02

Description

Overview

The Siemens 3RH2921-2DA02 is a high-quality SIRIUS lateral auxiliary switch block designed to expand the auxiliary contact capacity of SIRIUS 3RT2 power contactors and 3RH2 contactor relays. This essential electrical component provides two instantaneous Normally Closed (NC) contacts, making it ideal for interlocking, signaling, and control circuit applications in industrial automation.

It is engineered for quick and easy lateral mounting (side mounting) without the need for tools, simplifying installation and maintenance. The unit features spring-loaded terminals (also known as spring-type terminals) for reliable, vibration-proof, and time-saving wiring.

Key Features & Function

• Type: Lateral auxiliary switch

• Contact Configuration: 2 Normally Closed (NC) contacts

• Terminal Positions:

  • Left side: 51/52, 61/62

  • Right side: 31/32, 41/42

• Current Path: 1 NC, 1 NC

• Terminal Type: Spring-loaded for secure connection

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

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

• Application: Ideal for industrial automation, motor control, and relay monitoring

Benefit

• Ensures reliable contactor monitoring in industrial systems

• Simplifies installation and wiring with spring-loaded terminals

• Provides accurate and consistent switching performance

• Reduces downtime with high-quality, durable design

• Compatible with a wide range of Siemens contactors and relays

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