1SDA072155R1 ABB Emax 2 E1.2N 1000 Ekip Touch LSI 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA072155R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072155R1 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 LSI solid-state electronic trip unit providing long-time, short-time and instantaneous overcurrent 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 400–440 V AC and 50 kA at 690 V AC, together with a rated short-time withstand current of 50 kA for 1 s.

The E1.2N 1000 Ekip Touch LSI 3p WMP is supplied as the moving part of a withdrawable circuit-breaker system and connects through a compatible separate fixed chassis. Its Ekip Touch interface, adjustable LSI protection 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

• 1000 A Emax 2 air circuit breaker for demanding low-voltage distribution systems.
• Three-pole configuration for three-phase electrical installations.
• Ekip Touch LSI electronic trip unit provides long-time, short-time and instantaneous protection.
• High ultimate short-circuit breaking capacity of 66 kA at 400–440 V AC.
• 50 kA 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 Emax 2 E1.2N series.
• 1000 A rated uninterrupted current.
• Three-pole construction.
• Ekip Touch LSI solid-state electronic protection release.
• Long-time overload, short-time delayed and instantaneous short-circuit protection functions.
• 690 V AC rated operational voltage.
• 66 kA Icu at 400–440 V AC.
• 50 kA Icu at 690 V AC.
• 50 kA rated short-time withstand current for 1 s.
• Withdrawable moving-part configuration with main circuit connection through a separate chassis part.
• Four change-over auxiliary contacts and circuit-breaker open/closed position indication.
• IP30 degree of protection.

Advanced LSI Protection for Low-Voltage Distribution

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

The withdrawable E1.2N platform is particularly useful in switchboards where serviceability and operational flexibility are important. The circuit breaker moving part connects to the main circuit through a compatible separate chassis 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.