1SDA126427R1 ABB DLP Door Lock Position E2.3–E6.3 Left

Why Choose the ABB 1SDA126427R1 DLP Door Lock Position Accessory?

The ABB 1SDA126427R1, product designation DLP Door Lock Pos. E2.3..E6.3 Left, is a dedicated door-lock position interlock accessory for ABB SACE Emax 3 withdrawable circuit-breaker installations. Designed for the E2.3 through E6.3 frame sizes, it provides a mechanical safety interlock between the breaker position and the switchboard door.

The DLP (Door Lock Position) system is designed to prevent the switchgear compartment door from being opened while the withdrawable circuit breaker is in the racked-in or test position. This mechanical interlocking function helps enforce the intended operating sequence and reduces the possibility of unintended access to the breaker compartment while the moving part remains in an operational or test position.

This specific version is the left-hand DLP configuration for Emax 3 E2.3, E4.3 and E6.3 frame families. Its dedicated mechanical design makes it suitable for switchboards where controlled door access and breaker-position interlocking form part of the installation's operating and safety strategy.

Key Advantages

• Genuine ABB SACE Emax 3 mechanical interlock accessory.
• Designed for E2.3 through E6.3 withdrawable breaker frames.
• Prevents switchboard door opening when the breaker is in the racked-in or test position.
• Provides a direct mechanical relationship between breaker position and compartment-door access.
• Left-hand configuration for compatible switchboard arrangements.
• Supports controlled operating procedures around withdrawable air circuit breakers.
• Mechanical operation requires no auxiliary electrical supply.
• Purpose-designed for integration with the ABB SACE Emax 3 platform.

Key Features

• ABB SACE Emax 3 accessory.
• DLP – Door Lock Position interlock.
• Compatible with E2.3, E4.3 and E6.3 frame sizes.
• Designed for withdrawable circuit-breaker installations.
• Left-side mounting configuration.
• Restricts door opening according to circuit-breaker position.
• Interlocks the door when the breaker is racked in.
• Interlocks the door when the breaker is in the test position.
• Mechanical interlock construction.
• No integral auxiliary contacts.
• No normally open or normally closed electrical contacts.
• Suitable for low-voltage switchboard safety and access-control arrangements.

Mechanical Door Interlocking for Emax 3 Switchgear

Withdrawable air circuit breakers can occupy different positions within their fixed part, including connected, test and disconnected positions. The ABB DLP Door Lock Position accessory provides mechanical coordination between these breaker positions and the switchboard compartment door, preventing the door from being opened while the breaker is racked in or positioned for testing.

The 1SDA126427R1 is the left-hand DLP version intended for Emax 3 frame sizes from E2.3 through E6.3. Because its function is achieved mechanically, the accessory does not depend on an electrical control supply or auxiliary contacts, providing a straightforward physical interlocking solution for compatible ABB switchgear assemblies.

Typical Applications

• ABB SACE Emax 3 E2.3 withdrawable circuit-breaker installations.
• ABB SACE Emax 3 E4.3 withdrawable circuit-breaker installations.
• ABB SACE Emax 3 E6.3 withdrawable circuit-breaker installations.
• Industrial low-voltage switchboards.
• Main incoming and distribution switchgear.
• Data centres and critical-power installations.
• Manufacturing and process-industry electrical systems.
• Switchgear requiring mechanically controlled compartment-door access.