1SDA073798R1 ABB KLA Key Lock Open Kirk E2.2…E6.2

Why Choose the ABB KLA Kirk E2.2...E6.2 Key Lock Provision?

The ABB KLA Kirk E2.2...E6.2, order code 1SDA073798R1, is a mechanical key-lock provision for ABB SACE Emax 2 air circuit breakers. Designed for the E2.2, E4.2 and E6.2 frames, this accessory provides the breaker-side arrangement required for installation of a Kirk key lock and enables the circuit breaker to be mechanically secured in the open position.

The accessory forms part of ABB's key lock in open position system. When used with the appropriate Kirk locking equipment, the arrangement prevents normal closing of the circuit breaker while the locking mechanism is engaged, making it suitable for controlled switching procedures, mechanical interlocking and operational-safety schemes.

The 1SDA073798R1 is supplied as the Kirk key-lock predisposition only, allowing the required Kirk lock to be incorporated into the Emax 2 breaker installation. ABB specifies the accessory for SACE Emax 2 E2.2, E4.2 and E6.2 circuit breakers and classifies it as a mechanical locking accessory for low-voltage switchgear.

Key Advantages

• Genuine ABB SACE Emax 2 mechanical locking accessory.
• Provides the breaker-side predisposition for a Kirk key lock.
• Designed to support locking of the circuit breaker in the open position.
• Compatible with Emax 2 E2.2, E4.2 and E6.2 breaker frames.
• Supports controlled switching and mechanical interlocking procedures.
• Suitable for integration into Kirk key-interlocking systems.
• Helps prevent unintended circuit-breaker closing while the locking arrangement is engaged.

Key Features

• ABB KLA / KLC-A Kirk key-lock provision.
• Designed for key locking in the open position.
• Compatible with SACE Emax 2 E2.2, E4.2 and E6.2.
• Kirk lock predisposition only.
• Mechanical locking accessory for circuit-breaker control.
• Suitable for switchgear interlocking and controlled operating sequences.
• Loose or configurable accessory.
• Designed to IEC requirements for the Emax 2 accessory platform.
• ABB order code 1SDA073798R1.

Reliable Kirk Key Interlocking for Emax 2

Mechanical key interlocking provides a physical method of controlling when electrical equipment can be operated. With an appropriate Kirk locking system installed, an Emax 2 circuit breaker can be secured in its open position, helping ensure that the breaker cannot be closed until the defined key-interlocking conditions have been satisfied.

This approach is particularly useful in installations where switching operations must follow a predetermined sequence. The ABB 1SDA073798R1 provides the dedicated Emax 2 interface for the Kirk locking arrangement, allowing compatible E2.2, E4.2 and E6.2 circuit breakers to become part of a wider mechanical interlocking scheme for switchboards, generators, power sources and other controlled electrical equipment.

Typical Applications

• ABB SACE Emax 2 E2.2, E4.2 and E6.2 air circuit breakers.
• Kirk key-interlocked low-voltage switchboards.
• Controlled electrical switching sequences.
• Generator and mains interlocking arrangements.
• Industrial power-distribution switchgear.
• Critical-power and infrastructure electrical systems.