Siemens 3RH2911-4FC22 Front Auxiliary Switch 2 NO + 2 NC for 3RT2/3RH2 Contactors Original Brand New

Overview

The Siemens 3RH2911-4FC22 is a high-performance front-mounted auxiliary switch block designed to expand the functionality of Siemens 3RT2 contactors and 3RH2 contactor relays. This essential component provides additional switching contacts, enabling complex control circuits and enhanced monitoring capabilities for industrial applications. Featuring a robust design and reliable operation, the 3RH2911-4FC22 ensures seamless integration and long-lasting performance in demanding environments.

Key Benefit

• Expanded Functionality: Adds two normally open (2 NO) and two normally closed (2 NC) contacts, significantly increasing the versatility of your contactor or relay.
• Leading/Lagging Contacts: Unique contact timing with leading and lagging contacts (1 NO leading, 1 NO leading, 1 NC lagging, 1 NC lagging) for precise and sequential switching applications.
• Reliable Ring Cable Lug Connection: Ensures a secure and stable electrical connection, providing peace of mind and reducing maintenance needs.
• Effortless Installation: Designed for simple, front-mounted installation, allowing for quick and hassle-free integration with compatible Siemens devices.
• Seamless Compatibility: Perfectly engineered for use with Siemens 3RT2 contactors and 3RH2 contactor relays, guaranteeing optimal performance and a perfect fit.

Technical Specification

• Product Number: 3RH2911-4FC22
• Type: Auxiliary Switch Block, Front-Mounted
• Contact Configuration: 2 Normally Open (NO) + 2 Normally Closed (NC)
• Contact Path:
  • 1 NO (leading)
  • 1 NO (leading)
  • 1 NC (lagging)
  • 1 NC (lagging)
• Connection Type: Ring Cable Lug
• Compatibility: Designed for use with Siemens 3RT2 Contactors and 3RH2 Contactor Relays
• Terminal Designation: .7/.8 (NO), .7/.8 (NO), .5/.6 (NC), .5/.6 (NC)
• Design: Compact and durable, built to withstand industrial conditions.

Function

The Siemens 3RH2911-4FC22 auxiliary switch serves as a crucial extension for industrial control systems. By snapping onto the front of a compatible contactor or relay, it provides additional signaling contacts for a variety of functions, including:

• Status Indication: Lights or signals to indicate the open or closed state of the main contactor.
• Interlocking Circuits: Prevents simultaneous operation of multiple devices to ensure safety and proper sequencing.
• Feedback and Control: Provides feedback to a PLC (Programmable Logic Controller) or other control systems for monitoring and automation.
• Sequential Operation: The leading and lagging contacts can be used to control the timing of a circuit, ensuring one function begins before another ends, or vice versa.

For more information on the Siemens 3RH2911-4FC22 or to explore our full range of industrial control components, please visit Turll.