1SDA072143R1 ABB Emax 2 E1.2C 1000 Ekip Dip LSIG 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA072143R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072143R1 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 1000 A and incorporates an Ekip Dip LSIG electronic trip unit providing long-time, short-time, instantaneous and earth-fault protection.

As part of the ABB Emax 2 series, the E1.2C platform combines compact construction with dependable short-circuit performance for industrial, commercial and infrastructure switchboards. The C performance level provides an ultimate short-circuit breaking capacity of 50 kA at 415 V AC and 42 kA at 690 V AC.

The E1.2C 1000 Ekip Dip LSIG 3p WMP is supplied as the moving part of a withdrawable circuit-breaker system, with the compatible fixed part ordered separately. Its comprehensive LSIG protection, 1000 A rating and withdrawable construction make it well suited to main incomers, transformer secondary circuits and distribution feeders where dependable protection and straightforward maintenance are required.

Key Advantages

• 1000 A Emax 2 air circuit breaker for demanding low-voltage power distribution.
• Three-pole configuration for three-phase electrical installations.
• Ekip Dip LSIG electronic trip unit provides long-time, short-time, instantaneous and earth-fault protection.
• Ultimate short-circuit breaking capacity of 50 kA at 415 V AC.
• Maintains an ultimate short-circuit breaking capacity of 42 kA at 690 V AC.
• Withdrawable moving-part execution supports convenient isolation, inspection and maintenance.

Key Features

• ABB Emax 2 E1.2C series.
• 1000 A rated uninterrupted current.
• Three-pole construction.
• Ekip Dip LSIG electronic protection release.
• Long-time overload, short-time, instantaneous and earth-fault protection functions.
• 690 V AC system capability.
• 50 kA Icu at 415 V AC.
• 42 kA Icu at 690 V AC.
• Withdrawable moving-part configuration for use with a compatible Emax 2 E1.2 fixed part.
• Supplied with four auxiliary contacts for circuit-breaker status signalling.
• Trip signalling contact provided as standard.

Comprehensive LSIG Protection for Low-Voltage Distribution

The ABB Ekip Dip LSIG electronic trip unit provides four principal protection functions: long-time overload protection, short-time delayed short-circuit protection, instantaneous short-circuit protection and earth-fault protection. This combination enables the E1.2C circuit breaker to protect cables, busbars, transformers and downstream equipment against a broad range of electrical fault conditions.

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.
• Distribution feeder protection.
• Commercial and infrastructure electrical systems.
• Manufacturing and process-industry switchgear.