1SDA072156R1 ABB Emax 2 E1.2N 1000 Ekip Touch LSIG 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA072156R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072156R1 is an Emax 2 E1.2N air circuit breaker designed for protection, switching and isolation in demanding 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 Touch LSIG solid-state electronic trip unit providing long-time, short-time, instantaneous and earth-fault protection.

As part of the ABB Emax 2 series, the E1.2N platform combines compact construction with high short-circuit performance. The N performance level provides an ultimate short-circuit breaking capacity of 66 kA at 400 V AC, supporting demanding industrial, commercial and infrastructure distribution systems.

The E1.2N 1000 Ekip Touch LSIG 3p WMP is supplied as the moving part of a withdrawable circuit-breaker system for use with a compatible separate fixed part. Its adjustable LSIG protection, touchscreen-programmable Ekip Touch release and withdrawable construction make it particularly suitable for main incomers, transformer secondary circuits and critical distribution feeders where selective protection and maintainability are important.

Key Advantages

• 1000 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.
• High ultimate short-circuit breaking capacity of 66 kA at 400 V AC.
• Adjustable overload protection from 400–1000 A supports coordination with the protected circuit.
• Withdrawable moving-part execution facilitates circuit-breaker isolation, inspection and maintenance.

Key Features

• ABB SACE Emax 2 E1.2N series.
• 1000 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.
• 690 V rated voltage.
• 66 kA ultimate short-circuit breaking capacity at 400 V AC.
• Adjustable instantaneous short-circuit release from 1500–15,000 A.
• Adjustable short-time delayed short-circuit release from 600–10,000 A.
• Withdrawable moving-part configuration for use with a compatible Emax 2 fixed part.
• Four change-over auxiliary contacts for circuit-breaker status signalling.
• Circuit-breaker open/closed position indication.
• Optional motor drive capability.

Advanced LSIG Protection for Low-Voltage Distribution

The ABB Ekip Touch LSIG electronic trip unit provides comprehensive protection through long-time overload, short-time delayed, instantaneous short-circuit and earth-fault functions. Its adjustable protection settings allow the E1.2N circuit breaker to be coordinated with cables, busbars, transformers and downstream protective devices while the touchscreen interface supports straightforward configuration of the protection release.

The withdrawable E1.2N 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.