1SDA056413R1 ABB E3H 1600 PR122/P-LSIG 1600A 4P Fixed Air Circuit Breaker

Why Choose the ABB E3H 1600 PR122/P-LSIG 1600A 4P Fixed Air Circuit Breaker?

The ABB 1SDA056413R1 is a high-performance SACE Emax E3H air circuit breaker designed for switching and protection in demanding low-voltage power distribution systems. Rated at 1600 A, this four-pole fixed circuit breaker incorporates ABB's PR122/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 capability. Its E3H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC, making the breaker suitable for installations with high prospective fault currents.

The PR122/P-LSIG release provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. This version features a four-pole fixed configuration with rear horizontal flat terminals and is fitted with four auxiliary contacts plus circuit-breaker open/closed position indication for integration into compatible low-voltage switchboards.

Key Advantages

• 1600 A SACE Emax air circuit breaker for high-current low-voltage distribution.
• E3H high-breaking-capacity performance for systems with substantial prospective fault currents.
• PR122/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.
• Short-time short-circuit adjustment from 960–16,000 A supports coordinated protection.
• Integrated earth-fault protection provides comprehensive LSIG functionality.
• Four-pole fixed construction provides a robust permanent switchboard installation.
• Rear horizontal flat terminals provide a practical busbar connection arrangement.

Key Features

• ABB SACE Emax E3H 1600 air circuit breaker.
• 1600 A rated uninterrupted current.
• Four-pole configuration.
• PR122/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.
• Fixed installation with rear horizontal flat terminal connections.
• Four auxiliary contacts with open/closed position indication.

Advanced LSIG Protection for High-Current Distribution

Air circuit breakers such as the ABB E3H 1600 provide switching, isolation and automatic protection for important low-voltage distribution circuits. The PR122/P electronic release monitors circuit current 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 PR122/P-LSIG release combines long-time, short-time, instantaneous and earth-fault functions for comprehensive protection and coordination within complex electrical networks. Combined with the E3H breaker's 100 kA ultimate breaking capacity at 400 V AC and fixed rear-horizontal-terminal arrangement, the 1SDA056413R1 is particularly suited to permanent switchboard installations requiring high-current capacity and advanced electronic protection.

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.
• Critical installations requiring comprehensive LSIG electronic protection.