1SDA072185R1 ABB Emax 2 E1.2C 1250 Ekip Touch LSI 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA072185R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072185R1 is an Emax 2 E1.2C air circuit breaker designed for protection, switching and isolation in low-voltage electrical distribution systems. This three-pole withdrawable circuit breaker moving part has a rated uninterrupted current of 1250 A and incorporates an Ekip Touch LSI electronic trip unit providing long-time, short-time and instantaneous overcurrent protection.

As part of the ABB SACE Emax 2 series, the E1.2C platform combines compact construction with dependable short-circuit performance. The E1.2C 1250 performance level provides an ultimate short-circuit breaking capacity of 50 kA at 440 V AC and a rated short-time withstand current of 42 kA, supporting demanding industrial and commercial power-distribution applications.

The E1.2C 1250 Ekip Touch LSI 3p WMP is supplied as the moving part of a withdrawable circuit-breaker system for use with a compatible Emax 2 E1.2 fixed part. Its electronic LSI protection, 1250 A current rating and withdrawable construction make it particularly suitable for main incomers, transformer secondary circuits and distribution feeders where protection selectivity and maintainability are important.

Key Advantages

• 1250 A Emax 2 air circuit breaker for demanding low-voltage power distribution.
• Three-pole configuration for three-phase electrical installations.
• Ekip Touch LSI electronic trip unit provides long-time, short-time and instantaneous overcurrent protection.
• Ultimate short-circuit breaking capacity of 50 kA at 440 V AC.
• 42 kA short-time withstand capability supports selective protection architectures.
• Withdrawable moving-part execution facilitates circuit-breaker isolation, inspection and maintenance.

Key Features

• ABB SACE Emax 2 E1.2C series.
• 1250 A rated uninterrupted current.
• Three-pole construction.
• Ekip Touch LSI electronic protection release.
• Long-time overload, short-time delayed and instantaneous short-circuit protection functions.
• 50 kA ultimate short-circuit breaking capacity at 440 V AC.
• 42 kA rated short-time withstand current.
• Withdrawable moving-part configuration for use with a compatible Emax 2 E1.2 fixed part.
• Electronic protection settings support coordination with upstream and downstream protective devices.
• Suitable for high-current main distribution, incomer and feeder applications.

Advanced LSI Protection for Low-Voltage Distribution

The ABB Ekip Touch LSI electronic trip unit combines long-time overload, short-time delayed and instantaneous short-circuit protection. This protection architecture enables the E1.2C circuit breaker to safeguard cables, busbars, transformers and downstream electrical equipment while supporting selective coordination within low-voltage distribution networks.

The withdrawable E1.2C platform is particularly useful in switchboards where serviceability and operational flexibility are important. The circuit breaker moving part interfaces with a compatible separate fixed part, allowing the breaker to be withdrawn for inspection or maintenance without removing the permanent switchboard connections.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Transformer secondary and incomer protection.
• High-current distribution feeder protection.
• Commercial and infrastructure electrical systems.
• Manufacturing and process-industry switchgear.