1SDA056503R1 ABB E3H3200 PR123/P-LSIG 3200 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA056503R1 E3H 3200 A Air Circuit Breaker?

The ABB 1SDA056503R1 is a high-performance SACE Emax E3H air circuit breaker (ACB) designed for switching and protection in high-current low-voltage electrical distribution systems. Identified as E3H3200 PR123/P-LSIG In=3200A 3P F HR, this three-pole fixed circuit breaker combines a 3200 A rated current with ABB’s advanced PR123/P-LSIG electronic overcurrent release.

As part of the ABB SACE Emax / New Emax range, the E3H3200 is engineered for demanding industrial, commercial and infrastructure power distribution applications. The PR123/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection, delivering comprehensive protection against overloads, short circuits and earth faults while supporting selective coordination within complex electrical networks.

This version features a three-pole fixed construction with rear horizontal terminals for permanent installation within low-voltage switchboards. With a rated current of 3200 A and the E3H performance level providing an ultimate short-circuit breaking capacity of 100 kA at 415 V AC, it is well suited to high-power distribution systems where dependable protection and substantial fault-current interruption capability are required.

Key Advantages

• Heavy-duty 3200 A air circuit breaker for high-current power distribution.
• Advanced PR123/P-LSIG electronic protection release.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• Three-pole fixed configuration for permanent switchboard installation.
• Rear horizontal terminals facilitate connection within low-voltage switchgear assemblies.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• Fitted with four auxiliary contacts and open/closed position indication.
• Part of the proven ABB SACE Emax circuit breaker range.

Key Features

• ABB SACE Emax E3H frame.
• 3200 A rated current.
• PR123/P-LSIG electronic trip unit.
• Three-pole configuration.
• Fixed mounting construction.
• Rear horizontal terminals.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• Integrated ground-fault protection through the LSIG protection release.
• Four auxiliary contacts for circuit breaker signalling.
• Open/closed position indication for switchboard monitoring.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB E3H3200 provide switching and automatic protection for high-current low-voltage electrical distribution systems. The PR123/P electronic release monitors electrical conditions and provides advanced protection functions to help safeguard cables, busbars, transformers and downstream equipment against damaging overload and fault currents.

The LSIG configuration combines long-time overload protection, short-time selective short-circuit protection, instantaneous short-circuit protection and ground-fault protection. Together with the high short-circuit performance of the E3H frame, this makes the 1SDA056503R1 particularly suitable for main distribution applications where protection coordination, reliability and high fault-current interruption capability are essential.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Main incomer and high-current feeder protection.
• Manufacturing and process plants.
• Commercial and infrastructure electrical systems.
• Transformer secondary distribution circuits.
• High-current fixed switchboard installations.
• Power distribution systems requiring selective LSIG protection.