1SDA073839R1 ABB Supplementary Racked-Out Locks for Emax 2 E2.2-E6.2

Why Choose the ABB 1SDA073839R1 Supplementary Locks for Racked-Out Position?

The ABB 1SDA073839R1 is a genuine supplementary locking accessory for the racked-out position of compatible ABB SACE Emax 2 air circuit breakers. Identified by ABB as Suppl. locks in racked-out E2.2...E6.2, it is designed for Emax 2 frames from E2.2 through E6.2 and supports controlled mechanical locking of withdrawable circuit breakers when they are in the disconnected position.

In withdrawable switchgear, controlling the breaker position is important for safe operating and maintenance procedures. This ABB accessory supplements the breaker locking arrangement at the racked-out position, helping prevent unintended movement of the circuit breaker from its disconnected state when the appropriate locking procedure is applied.

Designed specifically for the ABB SACE Emax 2 platform, the 1SDA073839R1 provides manufacturer-engineered compatibility with E2.2, E4.2 and E6.2 withdrawable air circuit breakers. It is suited to industrial and commercial low-voltage switchboards where controlled breaker isolation and secure maintenance procedures are required.

Key Advantages

• Genuine ABB SACE Emax 2 mechanical accessory.
• Provides supplementary locking in the racked-out position.
• Designed for Emax 2 E2.2, E4.2 and E6.2 circuit breaker frames.
• Supports controlled isolation of withdrawable air circuit breakers.
• Helps prevent unintended breaker movement during maintenance procedures.
• Purpose-designed for integration with compatible ABB low-voltage switchgear.

Key Features

• ABB order code 1SDA073839R1.
• Supplementary racked-out locking accessory.
• For compatible withdrawable Emax 2 air circuit breakers.
• Suitable for E2.2 through E6.2 frame sizes.
• Mechanical locking solution for the disconnected breaker position.
• Supports switchgear operating and maintenance safety procedures.
• Designed as part of the ABB Emax 2 accessory system.
• Manufacturer-engineered fit for compatible ABB breaker assemblies.

Secure Racked-Out Position Control

A withdrawable air circuit breaker can be moved between defined positions within its switchgear cradle. Supplementary locking at the racked-out position provides an additional mechanical means of maintaining the breaker in its disconnected state while authorised work, inspection or maintenance procedures are carried out.

The ABB 1SDA073839R1 is designed around the mechanical architecture of the Emax 2 platform, providing a dedicated accessory solution rather than a general-purpose locking arrangement. Correctly matched ABB accessories help maintain reliable mechanical integration and consistent switchgear operating procedures.

Typical Applications

• ABB SACE Emax 2 E2.2 air circuit breaker installations.
• ABB SACE Emax 2 E4.2 air circuit breaker installations.
• ABB SACE Emax 2 E6.2 air circuit breaker installations.
• Withdrawable low-voltage switchgear assemblies.
• Industrial power distribution switchboards.
• Commercial and infrastructure electrical distribution systems.
• Installations requiring controlled breaker isolation during maintenance.