1SDA073783R1 ABB KLC-S Key Lock Open N.20005 E1.2

Why Choose the ABB 1SDA073783R1 KLC-S Key Lock?

The ABB 1SDA073783R1 is a KLC-S key lock for locking an Emax 2 E1.2 circuit breaker in the open position. Part of the ABB Emax 2 air circuit breaker accessory range, this mechanical locking accessory provides controlled key-operated locking of the breaker to help prevent unintended closing during maintenance, isolation and operational procedures.

This KLC-S version uses key number N.20005 and is intended for applications where equal-key locking is required between multiple compatible circuit breakers. Using the same key code across selected breakers can support coordinated operating and isolation procedures within low-voltage switchboards and power distribution systems.

Designed specifically for the ABB Emax 2 E1.2 frame, the 1SDA073783R1 is a mechanical accessory that does not require an electrical control supply. Its dedicated open-position locking function makes it suitable for industrial and commercial installations where controlled access to circuit breaker operation is required.

Key Advantages

• Provides key-operated locking of the circuit breaker in the open position.
• Designed specifically for ABB Emax 2 E1.2 air circuit breakers.
• N.20005 key code for equal-key locking applications.
• Suitable for coordinating locking arrangements between multiple compatible E1.2 circuit breakers.
• Purely mechanical operation requires no external electrical supply.
• Supports controlled isolation and operational security in low-voltage switchboards.

Key Features

• ABB Emax 2 KLC-S mechanical locking accessory.
• Key lock in open position.
• N.20005 key code.
• Compatible with Emax 2 E1.2 air circuit breakers.
• Equal-key configuration for compatible multiple-breaker applications.
• Mechanical locking function with no control voltage required.
• Loose or configurable accessory configuration.
• ABB order code 1SDA073783R1.

Reliable Open-Position Circuit Breaker Locking

A key lock in the open position provides a mechanical means of preventing a circuit breaker from being closed while the lock is engaged. This can support electrical isolation procedures, maintenance activities and operating sequences where access to the breaker closing function needs to be restricted to authorised personnel holding the appropriate key.

The ABB 1SDA073783R1 uses the N.20005 key code and can form part of an equal-key arrangement between multiple compatible E1.2 circuit breakers. This allows breakers equipped with the same lock code to be operated using the corresponding key, providing a practical solution for switchboards requiring a coordinated mechanical locking arrangement.

Typical Applications

• ABB Emax 2 E1.2 air circuit breaker installations.
• Circuit breaker open-position locking.
• Industrial low-voltage switchboards.
• Electrical isolation and maintenance procedures.
• Equal-key locking arrangements across multiple compatible breakers.
• Commercial and industrial power distribution systems.