1SDA073894R1 ABB Type A Fixed Circuit Breaker Support E1.2-XT7/M Wall Mount

Why Choose the ABB 1SDA073894R1 Emax 2 Type A Mechanical Interlock Support?

The ABB 1SDA073894R1 is a wall-mounted Type A mechanical interlock support designed for fixed ABB SACE Emax 2 E1.2 air circuit breakers. Identified by ABB as Sup. fixed Type A E1.2-XT7/M wall mount, it provides the mechanical support required when incorporating compatible fixed circuit breakers into a Type A cable-operated interlocking arrangement.

ABB specifies this accessory as a support for a mechanical interlock between two circuit breakers. The support mounts on the bottom plate in a wall-mounted installation and provides the correct interface for the associated mechanical interlocking components, helping coordinate the permitted operating states of the interconnected breakers without relying solely on electrical control logic.

The ABB 1SDA073894R1 is suitable for SACE Emax 2 E1.2 and compatible XT7 and XT7M fixed circuit breakers. In a two-breaker Type A arrangement, ABB specifies one support per breaker, used together with the appropriate interlocking cable and other components required for the complete mechanical interlock system.

Key Advantages

• Genuine ABB mechanical interlocking accessory for compatible circuit breakers.
• Designed for fixed Emax 2 E1.2 circuit breaker installations.
• Supports a Type A mechanical interlock between two circuit breakers.
• Wall-mounted configuration for the specified switchgear arrangement.
• Provides mechanical coordination of breaker operating states without relying solely on electrical control logic.
• Also suitable for compatible ABB Tmax XT7 and XT7M applications.

Key Features

• ABB SACE Emax 2 circuit breaker accessory.
• Mechanical interlock support for fixed circuit breakers.
• Type A interlock configuration.
• Designed for wall-mounted installations.
• Support located on the bottom mounting plate.
• Suitable for Emax 2 E1.2, XT7 and XT7M.
• Used in mechanical interlocking arrangements between two circuit breakers.
• Designed for use with the corresponding ABB cable interlock system.
• One support is required per breaker in the applicable arrangement.
• ABB order code and Product ID 1SDA073894R1.

Wall-Mounted Type A Mechanical Interlocking for Emax 2

Mechanical interlocking is used where the operating states of two circuit breakers must be physically coordinated. A cable-operated interlocking arrangement can prevent prohibited combinations of breaker positions according to the selected interlock scheme, providing a mechanical layer of operating control for applications such as alternative supplies, incomers and source-transfer systems.

The ABB 1SDA073894R1 provides the wall-mounted Type A support for a fixed Emax 2 E1.2 circuit breaker. It is one component of the overall interlocking system rather than a complete interlock kit and is intended to be combined with the appropriate ABB Type A interlock cable and corresponding support on the second circuit breaker.

Typical Applications

• ABB SACE Emax 2 E1.2 fixed air circuit breakers.
• Type A mechanical interlocking between two circuit breakers.
• Wall-mounted low-voltage switchgear arrangements.
• Utility and standby generator source interlocking.
• Alternative mains supply arrangements.
• Transformer incomer and distribution schemes.
• Industrial, commercial and infrastructure low-voltage switchboards.