1SDA072805R1 ABB E1.2B 1250 Ekip Touch LSI 4P WMP Air Circuit Breaker

Why Choose the ABB E1.2B 1250 Ekip Touch LSI 4p WMP Air Circuit Breaker?

The ABB 1SDA072805R1 is a SACE Emax 2 E1.2B air circuit breaker designed for protection and switching in low-voltage electrical distribution systems. Rated at 1250 A, this four-pole withdrawable breaker combines ABB's compact E1.2 frame with an advanced Ekip Touch LSI electronic trip unit, providing Long-time, Short-time and Instantaneous protection against overload and short-circuit conditions.

The E1.2B performance level provides a rated breaking capacity of 42 kA, while the breaker is suitable for systems up to 690 V AC. The combination of electronic LSI protection and ABB's Ekip Touch interface makes this model well suited to industrial, commercial and infrastructure distribution systems requiring configurable protection and effective coordination between upstream and downstream protective devices.

This model is supplied as a four-pole withdrawable moving part (WMP) for use with the appropriate Emax 2 fixed part. ABB specifies the moving part with an Ekip Touch LSI R 1250 solid-state release, four auxiliary contacts and circuit-breaker open/closed position indication, supporting integration into modern switchboards and control systems.

Key Advantages

• Compact 1250 A air circuit breaker for low-voltage power distribution.
• Four-pole configuration for switching and protection of four-conductor systems.
• Ekip Touch LSI electronic trip unit provides configurable overload and short-circuit protection.
• Long-time, Short-time and Instantaneous functions support effective protection coordination.
• 42 kA breaking capacity for demanding low-voltage distribution applications.
• 690 V AC voltage rating supports a broad range of industrial power systems.
• Ekip Touch interface provides accessible electronic protection configuration and monitoring.
• Withdrawable construction supports efficient inspection, servicing and replacement.
• Four auxiliary contacts support signalling and switchboard control-system integration.

Key Features

• ABB SACE Emax 2 E1.2B air circuit breaker.
• 1250 A rated current.
• 4-pole configuration.
• Ekip Touch LSI solid-state electronic protection release.
• Long-time (L) overload protection.
• Short-time (S) short-circuit protection for selective coordination.
• Instantaneous (I) short-circuit protection.
• 42 kA breaking capacity.
• 690 V AC voltage rating.
• Touch-based Ekip interface for protection configuration.
• Four auxiliary contacts fitted.
• Circuit-breaker open/closed position indication.
• Withdrawable moving-part construction for maintainable switchboard installations.
• Part of ABB's modular SACE Emax 2 power-distribution platform.

Advanced LSI Protection for Power Distribution

The ABB SACE Emax 2 E1.2B provides a robust switching and protection point within low-voltage power-distribution systems. Its Ekip Touch LSI release combines Long-time overload protection, Short-time delayed short-circuit protection and Instantaneous short-circuit protection. This combination enables the breaker to respond to sustained overloads and severe faults while the Short-time function supports selective coordination with other protective devices.

With a 1250 A current rating, 42 kA breaking capacity and electronic Ekip Touch protection, the E1.2B is suitable for demanding distribution boards and switchboards. Its withdrawable construction allows the moving breaker portion to be separated from the corresponding fixed part, supporting inspection, servicing and replacement where maintainability and system availability are important.

Typical Applications

• Main and distribution switchboards.
• Industrial low-voltage power distribution systems.
• Commercial building electrical distribution.
• Manufacturing and process-control facilities.
• Data centres and critical-power distribution.
• Infrastructure and utility installations.
• Transformer secondary distribution.
• Four-pole circuits requiring configurable LSI electronic protection and selective coordination.