1SDA072783R1 ABB E1.2N 1000 Ekip Dip LSIG 4P WMP Air Circuit Breaker

Why Choose the ABB E1.2N 1000 Ekip Dip LSIG 4p WMP Air Circuit Breaker?

The ABB 1SDA072783R1 is a high-performance SACE Emax 2 E1.2N air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. Rated at 1000 A, this four-pole withdrawable breaker combines ABB's compact E1.2N frame with an Ekip Dip LSIG electronic trip unit, providing Long-time, Short-time, Instantaneous and Ground-fault protection.

The E1.2N performance level delivers a rated ultimate short-circuit breaking capacity of 66 kA at 400–440 V AC and 50 kA at 500–690 V AC. Its rated service short-circuit breaking capacity is 100% of Icu, while short-time withstand capability reaches 50 kA for 1 s, supporting dependable protection and selective coordination in industrial, commercial and infrastructure distribution networks.

This model is supplied as a four-pole withdrawable moving part (WMP) for connection to the appropriate separate Emax 2 chassis. The solid-state Ekip Dip LSIG release provides comprehensive electronic protection, while four change-over auxiliary contacts and open/closed circuit-breaker position indication support effective switchboard monitoring and control.

Key Advantages

• High-performance 1000 A air circuit breaker for low-voltage power distribution.
• Four-pole configuration provides switching and protection across four-conductor systems.
• Ekip Dip LSIG electronic trip unit provides overload, selective short-circuit, instantaneous and earth-fault protection.
• 66 kA ultimate breaking capacity at 400–440 V AC for demanding fault-current conditions.
• 50 kA Icu at 500–690 V AC maintains robust protection at higher operating voltages.
• Ics equal to 100% of Icu provides strong service short-circuit performance.
• 50 kA short-time withstand current for 1 s supports selective protection schemes.
• Integrated Ground-fault (G) protection provides protection against earth-fault conditions.
• Withdrawable construction supports efficient switchboard inspection, servicing and replacement.

Key Features

• ABB SACE Emax 2 E1.2N air circuit breaker.
• 1000 A rated current.
• 4-pole configuration with neutral pole rated at 100% of Iu.
• Ekip Dip LSIG solid-state electronic protection release.
• Long-time (L) overload protection.
• Short-time (S) selective short-circuit protection.
• Instantaneous (I) short-circuit protection.
• Ground-fault (G) protection.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 66 kA Icu at 400–440 V AC.
• 50 kA Icu at 500–690 V AC.
• 50 kA Icw for 1 s and 30 kA for 3 s.
• Four change-over auxiliary contacts for signalling and control.
• Withdrawable moving-part configuration for maintainable switchboard installations.

Comprehensive LSIG Protection for Power Distribution

The ABB SACE Emax 2 E1.2N provides a robust switching and protection point within low-voltage power-distribution systems. Its Ekip Dip LSIG release combines Long-time overload, Short-time selective, Instantaneous short-circuit and Ground-fault protection, enabling comprehensive protection against the principal overcurrent and earth-fault conditions encountered in industrial and commercial networks.

With a 1000 A current rating, up to 66 kA ultimate short-circuit breaking capacity and 50 kA short-time withstand capability for 1 s, the E1.2N is well suited to demanding distribution systems requiring strong fault performance and selectivity. Its withdrawable construction allows the moving breaker portion to be separated from the fixed chassis, supporting efficient maintenance and replacement where system availability is important.

Typical Applications

• Main and distribution switchboards.
• Industrial low-voltage power distribution systems.
• Commercial building electrical distribution.
• Manufacturing and process-control facilities.
• Data centres and critical-power installations.
• Infrastructure and utility distribution systems.
• Transformer secondary and generator distribution.
• Four-pole distribution circuits requiring comprehensive LSIG protection and selective coordination.