1SDA059274R1 ABB E2N 1000A 3-Pole Withdrawable Air Circuit Breaker Moving Part PR122/P-LSI

Why Choose the ABB 1SDA059274R1 E2N 1000 PR122/P-LSI Air Circuit Breaker?

The ABB 1SDA059274R1 is a SACE Emax E2N 1000 air circuit breaker moving part designed for protection and switching in demanding low-voltage power distribution systems. Rated at 1000 A, this three-pole withdrawable breaker is equipped with an ABB PR122/P-LSI R1000 electronic overcurrent release for dependable overload and short-circuit protection.

As part of the ABB SACE Emax range, the E2N 1000 combines substantial short-circuit performance with a serviceable withdrawable construction. The 1SDA059274R1 is supplied as the withdrawable moving part (W MP) for use with a compatible fixed part and incorporates four auxiliary contacts with circuit-breaker open/closed position indication.

With a rated operational current of 1000 A, rated operational voltage of 690 V AC and rated ultimate and service short-circuit breaking capacities of up to 65 kA, the 1SDA059274R1 provides robust protection for substantial three-phase low-voltage distribution circuits.

Key Advantages

• 1000 A rated current for high-current low-voltage distribution applications.
• PR122/P-LSI electronic overcurrent release provides long-time, short-time and instantaneous protection.
• Three-pole configuration is suited to three-phase electrical distribution systems.
• Withdrawable moving-part construction supports inspection, servicing and breaker replacement.
• 65 kA Icu/Ics up to 440 V AC provides substantial short-circuit performance.
• 55 kA Icu/Ics at 500–690 V AC supports demanding higher-voltage distribution systems.
• Four auxiliary contacts provide circuit-breaker open/closed position indication.
• Part of the established ABB SACE Emax E2N air circuit breaker platform.

Key Features

• ABB SACE Emax E2N 1000 air circuit breaker moving part.
• 1000 A rated current (In).
• Three-pole construction.
• Withdrawable version.
• Supplied as the moving part (MP).
• Electronic PR122/P-LSI R1000 overcurrent release.
• LSI protection functions: long-time, short-time and instantaneous.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 65 kA Icu/Ics at 220–440 V AC.
• 55 kA Icu/Ics at 500–690 V AC.
• 55 kA short-time withstand current for 1 s.
• Four auxiliary contacts with open/closed circuit-breaker position indication.

Advanced LSI Protection with Withdrawable Switchgear

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 1SDA059274R1 allows the breaker moving part to be removed from its compatible fixed assembly, supporting inspection, servicing and replacement within maintainable switchboard installations.

The PR122/P-LSI R1000 electronic overcurrent release provides long-time protection against sustained overload conditions, short-time protection for selected short-circuit conditions and instantaneous protection against severe faults. Combined with the E2N platform's short-circuit performance and 1000 A current rating, the 1SDA059274R1 provides dependable protection for demanding industrial, commercial and infrastructure power distribution applications.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Three-phase feeder protection and switching.
• High-current distribution circuit protection.
• Transformer and installation protection.
• Manufacturing and process plant switchgear.
• Commercial and infrastructure electrical distribution.
• Withdrawable low-voltage switchgear installations.