1SDA057941R1 ABB E4H-A 3600 PR123/P-LSIG 3600 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E4H-A 3600 PR123/P-LSIG Air Circuit Breaker?

The ABB E4H-A 3600 PR123/P-LSIG, order code 1SDA057941R1, is a high-performance SACE Emax air circuit breaker moving part designed for protection and switching in demanding low-voltage power distribution systems. Rated at 3600 A, this three-pole breaker combines the E4H-A frame with ABB's advanced PR123/P-LSIG electronic overcurrent release for comprehensive circuit protection.

As part of the ABB SACE Emax range, the E4H-A is engineered for industrial switchboards, power distribution assemblies and infrastructure installations requiring high current capacity and dependable fault protection. This version is the withdrawable (W) moving part (MP), providing a serviceable breaker arrangement for use with the corresponding SACE Emax fixed part.

The E4H-A 3600 configuration has a rated current of 3600 A, a three-pole arrangement and an R3600 overcurrent release. Its PR123/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection, with an instantaneous setting reference of 54000 A for high-current distribution applications.

Key Advantages

• Heavy-duty 3600 A air circuit breaker for high-current power distribution.
• PR123/P-LSIG electronic trip unit provides comprehensive overcurrent and ground-fault protection.
• Three-pole configuration for three-phase electrical distribution systems.
• Withdrawable execution supports convenient isolation, inspection and maintenance.
• R3600 overcurrent release matched to the breaker's 3600 A current rating.
• Supplied with 4 auxiliary contacts and open/closed position indication.
• Part of the proven ABB SACE Emax air circuit breaker platform.

Key Features

• ABB SACE Emax E4H-A 3600 air circuit breaker moving part.
• 3600 A rated current.
• 3-pole configuration.
• PR123/P-LSIG electronic overcurrent release.
• LSIG protection functions: long-time, short-time, instantaneous and ground-fault protection.
• Withdrawable (W) execution.
• Moving part (MP) configuration.
• R3600 overcurrent release.
• 54000 A instantaneous setting reference.
• 4 auxiliary contacts with open/closed position indication.
• UL configuration.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4H-A protect low-voltage electrical systems against damaging overload, short-circuit and ground-fault conditions. The PR123/P-LSIG electronic release combines long-time overload, short-time selective, instantaneous short-circuit and ground-fault protection, allowing multiple protection functions to be coordinated within a single breaker.

The withdrawable moving-part construction is particularly useful in switchgear where serviceability and operational flexibility are important. When installed with the corresponding SACE Emax fixed part, the 3600 A breaker can be isolated and withdrawn for inspection or maintenance while providing comprehensive LSIG protection for demanding high-current distribution circuits.

Typical Applications

• Industrial low-voltage switchboards.
• Main incoming and distribution circuit protection.
• Power distribution centres and switchgear assemblies.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• High-current electrical systems requiring withdrawable circuit breakers.