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1SDA054939R1 ABB KLF-D T4-T5 Different-Key Lock for Front Panel and Rotary Handle
ABB 1SDA054939R1 KLF-D is a different-key open-position lock for the rotary handle operating mechanism and front panel of one compatible ABB SACE Tmax T4 or T5 moulded case circuit breaker.
£102.97
Why Choose the ABB 1SDA054939R1 KLF-D Key Lock?
The ABB 1SDA054939R1 is a KLF-D key lock accessory designed for compatible ABB SACE Tmax T4 and T5 moulded case circuit breakers. It provides mechanical locking in the open position, helping prevent unintended or unauthorised closing of the circuit breaker during defined operating, isolation or maintenance procedures.
This KLF-D version is designed for use with the rotary handle operating mechanism and front panel of one compatible Tmax T4 or T5 circuit breaker. The lock integrates with the ABB operating accessory system to provide a practical means of controlling breaker operation without requiring a separate external locking arrangement.
The KLF-D configuration uses different keys, making it suitable where individual circuit breakers require separately keyed access rather than a common-key system. This makes the 1SDA054939R1 particularly useful in switchboards and industrial distribution systems where access to individual breakers must be independently controlled.
Key Advantages
- Provides key locking in the open position for compatible ABB Tmax circuit breakers.
- Designed specifically for ABB SACE Tmax T4 and T5.
- KLF-D different-key configuration supports individually controlled breaker access.
- Designed for the rotary handle operating mechanism and front panel.
- Suitable for one compatible circuit breaker per locking accessory.
- Supports controlled isolation and maintenance procedures.
- Genuine ABB accessory engineered for integration with the SACE Tmax T range.
Key Features
- ABB KLF-D key lock.
- Different-key configuration.
- Locks the compatible circuit breaker in the open position.
- Compatible with Tmax T4 and T5 moulded case circuit breakers.
- Designed for rotary handle and front-panel applications.
- Designed for one circuit breaker.
- Loose or configurable accessory.
- IEC-standard ABB SACE Tmax accessory.
Controlled Open-Position Circuit Breaker Locking
A circuit breaker key lock provides a mechanical method of restricting breaker operation. With the ABB KLF-D arrangement, a compatible Tmax T4 or T5 circuit breaker can be locked in the open position, helping ensure that the breaker cannot simply be returned to service while the locking condition remains in place.
The 1SDA054939R1 is a different-key KLF-D version intended for the rotary handle operating mechanism and front panel of one breaker. Different-key locking is useful where individual breakers require independent access control, such as within multi-feeder switchboards, industrial distribution panels and installations with defined operational responsibilities.
Typical Applications
- Industrial low-voltage distribution switchboards.
- ABB Tmax T4 and T5 circuit breaker installations.
- Rotary handle operating mechanism installations.
- Electrical panels requiring open-position key locking.
- Maintenance and controlled isolation arrangements.
- Multi-breaker installations requiring individually keyed access.
Technical Specifications
| Series | SACE Tmax T |
|---|---|
| Order code | 1SDA054939R1 |
| Product type | Circuit breaker key lock accessory |
| Accessory type | KLF-D |
| Compatible circuit breakers | Tmax T4 and T5 |
| Locking position | Open |
| Key configuration | Different / separate keys |
| Application | Rotary handle operating mechanism and front panel |
| Number of circuit breakers | 1 |
| Configuration type | Loose or configurable |
| Standards | IEC |
| Product class | SACE Tmax T circuit breaker accessory |
| Product net weight | 0.1 kg |
| EAN | 8015644560614 |
Frequently Asked Questions
What is the ABB 1SDA054939R1 used for?
The ABB 1SDA054939R1 is a KLF-D key lock designed to lock a compatible ABB SACE Tmax T4 or T5 circuit breaker in the open position through the rotary handle operating mechanism and front-panel arrangement.
Which ABB circuit breakers are compatible with the 1SDA054939R1?
The KLF-D 1SDA054939R1 is designed for compatible ABB SACE Tmax T4 and T5 moulded case circuit breakers.
What does KLF-D mean on the ABB 1SDA054939R1?
KLF-D identifies a key lock for the front/rotary handle arrangement with different keys. The different-key configuration allows individual compatible circuit breakers to have separately controlled keyed access.
In which position does the ABB 1SDA054939R1 lock the circuit breaker?
The 1SDA054939R1 is designed to lock the compatible Tmax T4 or T5 circuit breaker in the open position, supporting controlled isolation and operating procedures.
Is the ABB 1SDA054939R1 a same-key or different-key lock?
The 1SDA054939R1 is the KLF-D different-key version. It is intended for applications where individually keyed locking is required rather than an equal-key arrangement across multiple breakers.
Trusted ABB Circuit Breaker Accessories
ABB SACE Tmax circuit breaker accessories provide integrated operating, control and locking solutions for industrial and commercial power distribution systems, with the KLF-D 1SDA054939R1 providing different-key open-position locking for compatible Tmax T4 and T5 front-panel and rotary-handle installations.
