Siemens 3RH1921-2EA20 First Lateral Auxiliary Switch 2 NO Contacts, Spring-Type Terminal for 3RT1 Contactors Original Brand New

Overview: Siemens 3RH1921-2EA20 Lateral Auxiliary Switch

The Siemens 3RH1921-2EA20 is a high-performance, lateral auxiliary switch designed for seamless integration with Siemens 3RT1 series contactors. Featuring two normally open (2 NO) contacts and a robust spring-type terminal, this switch provides reliable and secure electrical connections. Its lateral mounting design saves space and allows for easy installation, making it an ideal solution for industrial control systems, automation applications, and switchgear.

Key Features & Benefit

• Reliable Performance: Engineered by Siemens, a global leader in industrial automation, this auxiliary switch guarantees dependable and consistent operation in demanding environments.
• Space-Saving Design: The lateral mounting configuration allows for efficient use of panel space, a critical consideration in compact control cabinets.
• Effortless Installation: The innovative spring-type terminals reduce wiring time and complexity, providing a secure, vibration-resistant connection without the need for tools.
• Enhanced Functionality: Adds two normally open (NO) contacts to your 3RT1 contactor, expanding its control and signaling capabilities for diverse applications.
• Durable & Safe: Built to Siemens’ rigorous quality standards, the 3RH1921-2EA20 is robust and ensures long-term operational safety and reliability.

Function & Application

The Siemens 3RH1921-2EA20 serves a crucial role in expanding the functionality of 3RT1 contactors. It is primarily used to:

• Provide Feedback: Signal the operational status of the main contactor to PLCs (Programmable Logic Controllers) or control circuits.
• Interlock Circuits: Create safety interlocks to prevent simultaneous operation of conflicting equipment.
• Control Auxiliary Devices: Activate or deactivate indicator lights, alarms, or other auxiliary equipment based on the contactor’s state.
• General Purpose Control: Add extra switching points for custom control logic within a system.

Technical Specification

• Product Type: Lateral Auxiliary Switch
• Product Number: 3RH1921-2EA20
• Number of Contacts: 2 NO (Normally Open)
• Terminal Type: Spring-Type Terminal
• Mounting: Lateral (Side-Mounted)
• Compatibility: Designed for use with Siemens 3RT1 Contactors

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