1SDA072186R1 ABB Emax 2 E1.2C 1250 Ekip Touch LSIG 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA072186R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072186R1 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 LSIG solid-state electronic trip unit providing long-time, short-time, instantaneous and earth-fault 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 provides an ultimate short-circuit breaking capacity of 50 kA at 400–440 V AC and 42 kA at 690 V AC, with a rated service short-circuit breaking capacity equal to 100% of Icu.

The E1.2C 1250 Ekip Touch LSIG 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 comprehensive LSIG protection, electronic Ekip Touch release and withdrawable construction make it particularly suitable for main incomers, transformer secondary circuits and critical 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 LSIG electronic trip unit provides long-time, short-time, instantaneous and earth-fault protection.
• Ultimate short-circuit breaking capacity of 50 kA at 400–440 V AC.
• 42 kA rated short-time withstand current for 1 s 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 LSIG solid-state electronic protection release.
• Long-time overload, short-time delayed, instantaneous short-circuit and earth-fault protection functions.
• 690 V AC rated operational voltage.
• 50 kA Icu at 400–440 V AC.
• 42 kA Icu at 690 V AC.
• 42 kA rated short-time withstand current for 1 s.
• Withdrawable moving-part configuration for use with a compatible Emax 2 E1.2 fixed part.
• Four auxiliary contacts with open/closed position indication.
• Mechanical durability of 20,000 operating cycles.

Comprehensive LSIG Protection for Low-Voltage Distribution

The ABB Ekip Touch LSIG electronic trip unit combines long-time overload, short-time delayed, instantaneous short-circuit and earth-fault protection. This comprehensive protection architecture enables the E1.2C circuit breaker to safeguard cables, busbars, transformers and downstream electrical equipment while supporting selective coordination across 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 and can be withdrawn for inspection or maintenance while the permanent switchboard connections remain installed.

Typical Applications

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