1SDA059246R1 ABB E1N 1000A 3-Pole Withdrawable Air Circuit Breaker Moving Part PR123/P-LSIG

Why Choose the ABB 1SDA059246R1 E1N 1000 PR123/P-LSIG Air Circuit Breaker?

The ABB 1SDA059246R1 is a SACE Emax E1N 1000 air circuit breaker moving part designed for advanced protection and switching in demanding low-voltage power distribution systems. Rated at 1000 A, this three-pole withdrawable breaker is equipped with an ABB PR123/P-LSIG R1000 electronic overcurrent release for comprehensive circuit protection.

As part of the ABB SACE Emax range, the E1N 1000 combines high-current switching capability with a serviceable withdrawable construction. The 1SDA059246R1 is supplied as the withdrawable moving part (W MP) for use with a compatible fixed part and is fitted with four auxiliary contacts plus circuit-breaker open/closed position indication.

With a rated current of 1000 A, rated operational voltage of 690 V AC and rated ultimate and service short-circuit breaking capacities of 50 kA, the 1SDA059246R1 provides robust protection for substantial three-phase distribution circuits where advanced LSIG protection is required.

Key Advantages

• 1000 A rated current for high-current low-voltage distribution applications.
• PR123/P-LSIG electronic overcurrent release provides comprehensive protection functionality.
• LSIG protection covers long-time, short-time, instantaneous and earth-fault protection requirements.
• 50 kA ultimate and service breaking capacity across the specified 220–690 V AC range.
• Three-pole configuration for three-phase electrical distribution systems.
• Withdrawable moving-part construction supports inspection, servicing and breaker replacement.
• Four auxiliary contacts provide circuit-breaker open/closed position signalling.
• Part of the established ABB SACE Emax E1N air circuit breaker platform.

Key Features

• ABB SACE Emax E1N 1000 air circuit breaker moving part.
• 1000 A rated current (In).
• Three-pole construction.
• Withdrawable version.
• Supplied as the moving part (MP).
• Electronic PR123/P-LSIG R1000 overcurrent release.
• LSIG protection functions: long-time, short-time, instantaneous and ground-fault protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50 kA rated ultimate and service short-circuit breaking capacity.
• 50 kA short-time withstand current for 1 s.
• Four auxiliary contacts with open/closed circuit-breaker position indication.

Advanced LSIG Protection for Low-Voltage Distribution

Air circuit breakers protect and control high-current low-voltage distribution circuits by interrupting overload and short-circuit faults while providing switching and isolation capability. The withdrawable construction of the ABB 1SDA059246R1 allows the moving part to be removed from its compatible fixed assembly, supporting inspection, servicing and replacement within maintainable switchboard installations.

The PR123/P-LSIG electronic overcurrent release provides long-time protection against sustained overloads, short-time and instantaneous protection against short-circuit conditions, and ground-fault protection for enhanced system protection. Combined with the E1N platform's 50 kA breaking capacity and 1000 A current rating, this makes the 1SDA059246R1 a capable solution for demanding industrial and commercial power distribution.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• High-current feeder protection.
• Applications requiring LSIG electronic protection.
• Transformer and installation protection.
• Manufacturing and process plant switchgear.
• Commercial and infrastructure electrical distribution.
• Withdrawable low-voltage switchgear installations.