1SDA056839R1 ABB E4H3200PR123/P-LSIG 3200A 3-Pole Air Circuit Breaker Moving Part

Why Choose the ABB E4H3200PR123/P-LSIG 3200A Air Circuit Breaker?

The ABB E4H3200PR123/P-LSIG, order code 1SDA056839R1, is a high-performance 3200 A three-pole air circuit breaker moving part designed for demanding low-voltage power distribution systems. Part of the proven ABB SACE Emax E4 series, this withdrawable configuration combines the E4H high short-circuit performance level with the advanced PR123/P electronic overcurrent protection release.

The breaker is equipped with an ABB PR123/P-LSIG R3200 electronic overcurrent release, providing long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection. The PR123/P is an advanced Emax protection release designed for sophisticated protection and coordination requirements in critical electrical distribution networks.

With a rated uninterrupted current of 3200 A, a three-pole withdrawable moving-part configuration and E4H high fault-interruption capability, the E4H3200PR123/P-LSIG is engineered for installations where protection performance, maintainability and continuity of service are critical. Its withdrawable construction allows the moving part to be isolated and removed from the corresponding fixed part for inspection, maintenance or replacement.

Key Advantages

• High-capacity 3200 A air circuit breaker moving part for demanding low-voltage distribution systems.
• Three-pole withdrawable configuration supports convenient servicing, inspection and replacement.
• Advanced PR123/P-LSIG R3200 electronic protection release.
• Comprehensive long-time, short-time, instantaneous and earth-fault protection.
• High 100 kA ultimate short-circuit breaking capacity at 400/415 V AC.
• Breaking capacity remains 85 kA at 690 V AC.
• 100 kA short-time withstand current for 1 s for demanding fault conditions.
• Fitted with four auxiliary contacts for signalling and control.
• Integrated open/closed breaker position indication.
• Part of the established ABB SACE Emax air circuit breaker platform.

Key Features

• ABB SACE Emax E4H air circuit breaker platform.
• 3200 A rated uninterrupted current.
• Three-pole construction.
• Withdrawable moving part (W MP) configuration.
• PR123/P-LSIG R3200 electronic overcurrent release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Earth-fault protection.
• 100 kA Icu at 400/415 V AC.
• 100 kA Icu at 500 V AC.
• 85 kA Icu at 690 V AC.
• 100 kA Icw for 1 s.
• 75 kA Icw for 3 s.
• Four auxiliary contacts and breaker open/closed position indication.
• Designed for use with the corresponding E4H withdrawable fixed part.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4 protect low-voltage electrical networks against damaging overcurrents while providing dependable switching and isolation of high-current circuits. The E4H performance class offers particularly high fault-interruption capability, making it suitable for main incomers, transformer secondaries, large feeders and other circuits where substantial prospective short-circuit currents can occur.

The PR123/P electronic release continuously monitors electrical conditions and initiates breaker operation when configured protection thresholds are exceeded. In this LSIG configuration, long-time protection responds to sustained overloads, short-time protection supports selective short-circuit coordination, instantaneous protection rapidly interrupts severe faults, and earth-fault protection provides an additional layer of protection against ground-fault conditions.

Typical Applications

• Main low-voltage switchboards and power distribution assemblies.
• Industrial high-current power distribution systems.
• Transformer secondary and main incomer protection.
• Large feeder circuits requiring selective protection.
• Distribution systems requiring integrated earth-fault protection.
• Networks with high prospective short-circuit currents.
• Manufacturing and process plant electrical systems.
• Commercial buildings, utilities and critical infrastructure installations.