1SDA056431R1 ABB E3H 1600 PR123/P-LSIG 1600A 4P Withdrawable Air Circuit Breaker

Why Choose the ABB E3H 1600 PR123/P-LSIG 1600A 4P Withdrawable Air Circuit Breaker?

The ABB 1SDA056431R1 is a high-performance SACE Emax E3H air circuit breaker moving part designed for switching and protection in demanding low-voltage power distribution systems. Rated at 1600 A, this four-pole withdrawable circuit breaker incorporates ABB's advanced PR123/P-LSIG R1600 electronic overcurrent release, providing comprehensive protection for high-current industrial, commercial and infrastructure electrical networks.

Part of the ABB SACE Emax E3 series, the E3H 1600 combines a substantial 1600 A continuous current rating with high short-circuit interruption performance. The E3H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC, making this breaker suitable for distribution systems with substantial prospective fault currents.

The PR123/P-LSIG release provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. This version is supplied as a four-pole withdrawable moving part for use with the corresponding SACE Emax E3 fixed part and incorporates four auxiliary circuit-breaker contacts plus open/closed position indication.

Key Advantages

• 1600 A SACE Emax air circuit breaker for high-current low-voltage power distribution.
• E3H high-breaking-capacity performance for installations with substantial prospective fault currents.
• Advanced PR123/P-LSIG electronic trip unit provides overload, short-circuit and earth-fault protection.
• 100 kA ultimate short-circuit breaking capacity at 400 V AC.
• Adjustable overload protection from 400–1600 A.
• Adjustable short-time protection from 960–16,000 A supports protection coordination.
• Adjustable instantaneous protection from 2400–24,000 A.
• Four-pole withdrawable construction supports inspection, servicing and breaker replacement.
• Integrated earth-fault protection provides comprehensive LSIG functionality.

Key Features

• ABB SACE Emax E3H 1600 air circuit breaker moving part.
• 1600 A rated uninterrupted current.
• Four-pole configuration.
• PR123/P-LSIG R1600 electronic overcurrent release.
• LSIG protection: long-time, short-time, instantaneous and earth-fault functions.
• 400–1600 A overload adjustment range.
• 960–16,000 A short-time short-circuit adjustment range.
• 2400–24,000 A instantaneous short-circuit adjustment range.
• 100 kA Icu at 400 V AC.
• Integrated earth-fault protection.
• IP20 degree of protection.
• Withdrawable moving-part construction for service-friendly switchgear.

Advanced PR123/P-LSIG Protection with Withdrawable Construction

Air circuit breakers such as the ABB E3H 1600 provide switching, isolation and automatic protection for important low-voltage distribution circuits. The PR123/P electronic overcurrent release monitors circuit conditions and commands the breaker to open when configured overload, short-circuit or earth-fault thresholds are reached, helping protect conductors, busbars, switchgear and connected equipment.

The PR123/P-LSIG release combines long-time, short-time, instantaneous and earth-fault protection functions for comprehensive protection and coordination within sophisticated electrical networks. Combined with the E3H frame's 100 kA ultimate breaking capacity at 400 V AC and withdrawable construction, the 1SDA056431R1 is particularly suited to switchboards requiring advanced electronic protection, high fault-interruption capability and service-friendly breaker replacement.

Typical Applications

• Main incoming protection in low-voltage switchboards.
• Industrial power distribution systems.
• High-fault-level feeder and distribution circuits.
• Manufacturing and process plant electrical systems.
• Commercial and infrastructure power distribution.
• Transformer-fed low-voltage distribution boards.
• Generator and standby power switchboards.
• Withdrawable switchgear requiring advanced LSIG protection and service-friendly maintenance.