Siemens 3LD42054BB500RC0 Breaker Control Switch – 25A, 2 Trip + 2 Close

The Siemens 3LD42054BB500RC0 is a 3LD4 Breaker Control Switch designed for controlling circuit breakers in low-voltage and medium-voltage electrical panels. It is a TNC (Trip-Neutral-Close) control switch with three operating positions—Trip, Neutral and Close—used to operate circuit breakers through auxiliary releases.

This Siemens breaker control switch features a pistol-grip handle and spring-return operation, providing convenient and reliable manual control for critical breaker operations. The product is rated at 25A and features a 2 Trip + 2 Close contact configuration.

The 3LD42054BB500RC0 is suitable for switchgear panels, power distribution systems, industrial control panels, MCCs, utility installations and circuit-breaker control circuits where dependable Trip and Close commands are required.

Key Features

• Siemens 3LD42054BB500RC0 Breaker Control Switch
• 3LD4 Control Switches series
• Rated current: 25A
• 2 Trip + 2 Close contact configuration
• Trip – Neutral – Close (TNC) operating positions
• Pistol-grip handle for convenient operation
• Spring-return operation
• Cam-operated rotary switching mechanism
• Suitable for circuit-breaker control circuits
• Designed for low-voltage and medium-voltage panels
• Tested according to IEC 60947-5-1

Applications

The Siemens 3LD42054BB500RC0 can be used for:

• LV switchgear panels
• MV control panels
• Circuit-breaker control circuits
• Power distribution systems
• Industrial electrical panels
• Motor Control Centers (MCCs)
• Utility and infrastructure projects
• Electrical protection systems
• Switchgear control applications
• Industrial automation installations

Benefits

The Trip-Neutral-Close arrangement provides clearly defined operating positions for circuit-breaker control, helping operators perform breaker operations through the appropriate auxiliary release circuits.

Its 2 Trip + 2 Close configuration provides multiple control contacts for applications requiring separate or additional breaker-control circuits. The spring-return mechanism helps the switch return from the Trip or Close command position after operation.

The pistol-grip handle provides convenient manual operation, while the 3LD4 cam-operated design is intended for reliable switching performance in industrial control applications.

For replacement or new-panel applications, verify the current rating, contact configuration, breaker-control circuit requirements and compatibility with the existing switchgear before selection.

Suitable for Customers Across India

SB Smart supplies industrial electrical and automation products across India, including Faridabad, Delhi NCR, Noida, Gurgaon/Gurugram, Ghaziabad, Manesar, Mumbai, Pune, Ahmedabad, Vadodara, Surat, Jaipur, Chandigarh, Ludhiana, Hyderabad, Bengaluru/Bangalore, Chennai, Kolkata, Indore and Lucknow, along with other major industrial locations.

The Siemens 3LD42054BB500RC0 can be considered by panel builders, switchgear manufacturers, OEMs, electrical contractors, system integrators, utility contractors and industrial maintenance teams looking for Siemens 3LD4 breaker control switches.

FAQs

1. What is Siemens 3LD42054BB500RC0?
It is a Siemens 3LD4 Breaker Control Switch, also referred to as a TNC (Trip-Neutral-Close) switch.

2. What is the current rating of this breaker control switch?
The 3LD42054BB500RC0 is rated at 25A.

3. What is the contact configuration?
The supplied product information specifies a 2 Trip + 2 Close configuration.

4. What are the operating positions?
The switch has Trip, Neutral and Close positions for circuit-breaker control.

5. Where is the Siemens 3LD42054BB500RC0 used?
It is suitable for LV and MV panels, switchgear, power distribution systems and circuit-breaker control circuits.

6. Which standard does it comply with?
The product is specified/tested according to IEC 60947-5-1.

7. Can I buy Siemens 3LD42054BB500RC0 from SB Smart?
Yes, SB Smart lists this Siemens breaker control switch for purchase and enquiry, subject to current availability.