1SDA105118R1 ABB MIR-H XT6 Rear Horizontal Mechanical Interlock

Why Choose the ABB 1SDA105118R1 MIR-H XT6 Mechanical Interlock?

The ABB 1SDA105118R1 is a rear horizontal mechanical interlock designed for two ABB SACE Tmax XT6 moulded-case circuit breakers. Identified by ABB as MIR-H XT6 MECH,LOCK REAR HO. 2 C.BREAKER, it provides a mechanical interlocking solution for applications where the operating states of two circuit breakers must be coordinated.

As part of the ABB SACE Tmax XT mechanical accessory range, the MIR-H arrangement mechanically interlocks two XT6 circuit breakers to prevent incompatible switching states. This makes it particularly suitable for power-distribution arrangements involving alternative supplies, transfer schemes and other systems where simultaneous operation of two breakers must be mechanically restricted.

The MIR-H configuration is installed at the rear of the breakers and is intended for a horizontal arrangement of two XT6 circuit breakers. ABB provides dedicated MIR-P mounting plates for use with the rear mechanical interlock according to the breaker installation configuration.

Key Advantages

• Dedicated mechanical interlock for two ABB Tmax XT6 circuit breakers.
• Rear horizontal configuration for side-by-side breaker arrangements.
• Mechanically coordinates the operating states of two circuit breakers.
• Helps prevent incompatible simultaneous breaker operation.
• Suitable for alternative-supply and transfer applications.
• Part of the coordinated ABB SACE Tmax XT mechanical accessory system.

Key Features

• ABB SACE Tmax XT mechanical accessory.
• MIR-H rear mechanical interlock.
• Designed for two Tmax XT6 circuit breakers.
• Horizontal breaker arrangement.
• Rear-mounted mechanical interlocking configuration.
• ABB designation: MIR-H XT6 MECH,LOCK REAR HO. 2 C.BREAKER.
• Dedicated MIR-P plates are available for the applicable breaker mounting arrangement.
• Suitable for IEC and UL applications.

Reliable Mechanical Interlocking for Dual-Breaker Systems

Mechanical interlocks are used where the operating state of one circuit breaker must mechanically restrict the permissible state of another. This provides a physical interlocking layer independent of electrical control logic and is particularly valuable in distribution arrangements where two supply paths must not be connected simultaneously.

The ABB 1SDA105118R1 provides this functionality for two horizontally arranged Tmax XT6 circuit breakers from the rear of the assembly. Together with the appropriate ABB MIR-P mounting plates, it forms a coordinated interlocking arrangement for switchboards, transfer systems and industrial low-voltage distribution equipment.

Typical Applications

• ABB SACE Tmax XT6 dual-breaker installations.
• Main and alternative supply arrangements.
• Utility and generator transfer systems.
• Low-voltage switchboards and distribution boards.
• Industrial power-distribution assemblies.
• Systems requiring mechanical prevention of incompatible breaker operating states.