Siemens SIRIUS 3RH2911-4GA13 Front Auxiliary Switch Block, Ring Cable Lug Connection, Contactor Relay S00 Original Brand New

Overview

The Siemens SIRIUS 3RH2911-4GA13 is a high-quality, front-mounted auxiliary switch block designed for expanding the contact configuration of specific Siemens contactor relays. This essential component provides additional switching contacts for control and signaling circuits in industrial applications.

It features a 4-pole configuration with 1 Normally Open (NO) and 3 Normally Closed (NC) instantaneous contacts. The unit is specifically designed for quick and easy snap-on mounting onto the front of compatible contacotr relays and utilizes ring cable lug connections for secure wiring.

Benefit

• System Expansion: Easily expands the number of auxiliary contacts on your Siemens contactor relays (3RH2140 / 3RH2441) without the need for additional panel space.
• Reliable Performance: Features a long mechanical service life (10 million cycles) and high contact reliability, ensuring robust control circuit operation.
• Simple Installation: Designed for tool-free, snap-on mounting to the front of the compatible contactor/contactor relay.
• Secure Connection: The ring cable lug connection ensures a secure and robust electrical connection, ideal for environments requiring high vibration resistance or specific wiring methods.

Function and Application

The 3RH2911-4GA13 Auxiliary Switch Block functions as an extension of the primary contactor relay, providing additional contact points for low-voltage control circuits.

• Function: It monitors the switching status of the main contactor/contactor relay and relays this information (open or closed) to other control, signaling, or interlocking circuits. The configuration of 1 NO and 3 NC instantaneous contacts offers versatile control options.
• Applications
  • Implementing interlocking circuits for motor starters.
  • Providing feedback signals to PLCs or control systems.
  • Activating indicator lamps or alarms.
  • Extending control logic in complex automation systems.

Compatibility Note

Crucial: This auxiliary switch is physically coded and is only combinable with the Siemens SIRIUS contactor relays 3RH2140 and 3RH2441 to ensure compliance with EN 50011 standards.

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