Siemens SIRIUS 3RH2911-4HA02 Front-Mounted Auxiliary Switch Block Ring Cable Lug Connection for 3RT2/3RH2 Original Brand New

Overview

The Siemens SIRIUS 3RH2911-4HA02 is an essential front-mounted auxiliary switch block designed for seamless integration with SIRIUS 3RT2 Power Contactors and 3RH2 Contactor Relays. This module expands the contact capacity of your control circuit, offering 2 Normally Closed (NC) instantaneous contacts to provide critical feedback and control signals. Its robust design and tool-free snap-on mounting ensure a quick, secure installation, while the ring cable lug connection provides a reliable and heavy-duty wiring option for industrial environments.

Key Features & Specification

• Manufacturer: Siemens
• Product Series: SIRIUS
• Part Number: 3RH2911-4HA02
• Mounting: Front-mounted (Snap-on)
• Contact Configuration: 2 NC (Normally Closed) Instantaneous Contacts
• Terminal Type: Ring Cable Lug Connection
• Compatibility: Designed for use with SIRIUS 3RT2 Contactors and 3RH2 Contactor Relays
• Mirror Contact Function: Yes (with 3RT2 contactors, compliant with IEC 60947-4-1)
• Positively Driven Operation: Yes (with 3RH2 contactor relays, compliant with IEC 60947-5-1)
• Rated Operational Current (AC-15, 230V): 6 A
• Insulation Voltage: 690 V

Function

The primary function of the 3RH2911-4HA02 auxiliary switch is to provide electrical feedback or auxiliary switching points in a control circuit, dependent on the main contactor’s state. When the primary contactor or relay is energized, these 2 NC contacts will open, and when the main device is de-energized, they will close. This is crucial for interlocking circuits, status indication, and implementing safety functions like the mirror contact for monitoring the main power contacts.

Benefit

• Reliable Performance: Part of the trusted Siemens SIRIUS modular system, ensuring high-quality and consistent operation.
• Easy Installation: Tool-free, snap-on mounting to the front of the compatible contactor/relay saves time and simplifies maintenance.
• Robust Wiring: Ring cable lug connection offers a secure and high-vibration resistant terminal, ideal for demanding industrial applications.
• Safety Compliance: Functions as a mirror contact and provides positively driven operation, enhancing the safety and reliability of control circuits.
• Control Circuit Expansion: Easily adds the necessary 2 Normally Closed auxiliary contacts for advanced control and monitoring needs.

For more of our high-quality industrial automation products and electrical components, visit Turll today!