1SDA056495R1 ABB E3H2500 PR123/P-LSIG 2500A 4P Withdrawable Air Circuit Breaker

Why Choose the ABB E3H2500 PR123/P-LSIG 2500A 4P Withdrawable Air Circuit Breaker?

The ABB E3H2500 PR123/P-LSIG, order code 1SDA056495R1, is a high-performance SACE Emax air circuit breaker moving part designed for protection and switching in demanding low-voltage electrical distribution systems. This E3H breaker has a rated current of 2500 A, a four-pole configuration and ABB's PR123/P-LSIG R2500 electronic overcurrent release.

Designed as the moving part of a withdrawable circuit-breaker installation, the E3H2500 supports service-friendly integration into compatible SACE Emax switchgear. The withdrawable design is particularly valuable in installations where circuit-breaker isolation, inspection and maintenance flexibility are important.

The PR123/P-LSIG release provides LSIG protection, covering long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault conditions. Combined with its 2500 A rating, four-pole architecture and withdrawable construction, the 1SDA056495R1 is well suited to main incomers, high-current feeders and critical industrial power distribution circuits.

Key Advantages

• High-performance 2500 A SACE Emax E3H air circuit breaker moving part.
• Four-pole configuration for suitable three-phase systems incorporating a neutral conductor.
• PR123/P-LSIG R2500 electronic overcurrent release provides comprehensive LSIG circuit protection.
• Withdrawable moving-part construction supports service-friendly switchboard operation and maintenance.
• Four auxiliary contacts support circuit-breaker status signalling and control integration.
• Integrated open/closed position indication provides clear breaker status information.

Key Features

• ABB SACE Emax E3H air circuit breaker moving part.
• 2500 A rated current.
• Four-pole configuration.
• PR123/P-LSIG R2500 electronic overcurrent release.
• LSIG protection functions for long-time, short-time, instantaneous and earth-fault protection.
• Withdrawable moving-part version for compatible SACE Emax switchgear.
• Four auxiliary contacts for status and control signalling.
• Open/closed position indication for circuit-breaker status monitoring.
• 96 kg product weight.
• ABB order code 1SDA056495R1.

Comprehensive LSIG Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3H2500 protect high-current electrical distribution systems against damaging overload, short-circuit and earth-fault conditions. The PR123/P-LSIG electronic overcurrent release combines long-time, short-time, instantaneous and earth-fault protection functions to provide comprehensive protection for important low-voltage distribution circuits.

The withdrawable moving-part construction is particularly useful in industrial switchboards where serviceability and operational flexibility are important. When used within the appropriate compatible SACE Emax withdrawable assembly, the breaker supports convenient isolation and maintenance while its 2500 A rating and four-pole configuration make it suitable for demanding three-phase power distribution systems.

Typical Applications

• Main incoming protection for industrial low-voltage switchboards.
• High-current feeder and distribution circuit protection.
• Manufacturing plants and process facilities.
• Commercial and infrastructure power distribution systems.
• Motor control centres and large electrical distribution assemblies.
• Withdrawable switchgear requiring comprehensive overload, short-circuit and earth-fault protection.