1SDA054941R1 ABB KLF-S T4-T5 Key Lock Equal No. 20006 for Front/Rotary Handle

Why Choose the ABB 1SDA054941R1 KLF-S Key Lock?

The ABB 1SDA054941R1 is a KLF-S key lock accessory designed for compatible ABB SACE Tmax T4 and T5 moulded case circuit breakers. It provides a mechanical locking solution for the breaker front or rotary handle operating mechanism, helping control access to circuit breaker operation within electrical distribution systems.

This KLF-S version uses equal key number 20006, allowing compatible circuit breakers equipped with matching number 20006 locks to be operated using the same key. The lock is intended for locking the circuit breaker operating mechanism in the open position, making it suitable for installations requiring common-key access across multiple breakers.

Designed specifically for Tmax T4 and T5 circuit breakers, the 1SDA054941R1 is suitable for front and rotary handle operating mechanisms. It provides a genuine ABB solution for switchboards, industrial distribution panels and other applications where controlled circuit breaker operation is required.

Key Advantages

• Provides key-operated mechanical locking for compatible Tmax circuit breakers.
• Designed for ABB SACE Tmax T4 and T5 circuit breakers.
• Uses equal key number 20006 for common-key locking arrangements.
• Designed to secure the compatible circuit breaker in the open position.
• Suitable for front and rotary handle operating mechanisms.
• Genuine ABB accessory engineered for coordinated integration with the SACE Tmax T platform.

Key Features

• ABB SACE Tmax T accessory.
• KLF-S key lock configuration.
• Equal key number: 20006.
• Same-key arrangement for compatible circuit breakers.
• Provides mechanical locking in the open position.
• Suitable for front operating mechanisms.
• Suitable for rotary handle operating mechanisms.
• Compatible with Tmax T4 and T5 moulded case circuit breakers.

Controlled Circuit Breaker Locking with a Common Key

A circuit breaker key lock provides a mechanical method of restricting operation of the breaker. The ABB KLF-S system allows compatible Tmax T4 and T5 circuit breakers to be locked in the open position, helping prevent unintended operation until the appropriate key is used.

The ABB 1SDA054941R1 uses equal key number 20006. Compatible breakers equipped with matching KLF-S number 20006 locks can therefore share the same key, providing a practical common-key arrangement for switchboards and installations containing multiple circuit breakers.

Typical Applications

• Open-position locking of ABB Tmax T4 and T5 circuit breakers.
• Common-key locking arrangements across multiple compatible breakers.
• Front-operated circuit breaker installations.
• Rotary handle operated circuit breaker installations.
• Industrial switchboards and electrical distribution panels.
• Commercial and infrastructure power distribution assemblies.