1SDA056610R1 ABB E3V 1600 PR121/P-LSIG 1600A 3P Withdrawable Air Circuit Breaker

Why Choose the ABB E3V 1600 PR121/P-LSIG Air Circuit Breaker?

The ABB E3V 1600 PR121/P-LSIG, order code 1SDA056610R1, is a high-performance withdrawable air circuit breaker (ACB) moving part designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the proven ABB SACE Emax E3 series, this three-pole breaker combines a 1600 A rated current with the PR121/P-LSIG R1600 electronic overcurrent release.

The PR121/P-LSIG trip unit provides long-time, short-time, instantaneous and earth-fault protection, helping safeguard electrical installations against overloads, short circuits and ground faults. The E3V performance level provides high short-circuit capability for industrial switchboards, power distribution assemblies and infrastructure applications where dependable protection and service continuity are essential.

This version is configured as a 3-pole withdrawable moving part (W MP) with a rated operational voltage of 690 V AC. It is fitted with four change-over auxiliary contacts and open/closed circuit-breaker position indication, while its withdrawable construction supports efficient inspection and servicing within compatible ABB SACE Emax switchgear.

Key Advantages

• High-performance ABB SACE Emax E3V air circuit breaker moving part.
• 1600 A rated current for high-current industrial and commercial distribution.
• PR121/P-LSIG electronic protection release with overload, short-circuit and earth-fault protection.
• 3-pole withdrawable moving-part configuration supports serviceable switchboard designs.
• 690 V AC rated voltage for low-voltage power distribution systems.
• High short-circuit performance for demanding electrical installations.

Key Features

• ABB SACE Emax E3V air circuit breaker moving part.
• 1600 A rated current.
• 3-pole configuration.
• PR121/P-LSIG R1600 electronic overcurrent release.
• LSIG protection functions: long-time, short-time, instantaneous and earth-fault.
• Withdrawable (W MP) construction.
• 690 V AC rated operational voltage.
• 130 kA ultimate short-circuit breaking capacity at 400 V AC.
• 85 kA short-time withstand current for 1 s.
• Fitted with four change-over auxiliary contacts and open/closed position indication.

Reliable Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB E3V provide switching and protection for high-current low-voltage distribution circuits. The PR121/P-LSIG electronic release provides long-time, short-time, instantaneous and earth-fault protection functions, helping protect cables, busbars and connected equipment against overloads and damaging electrical faults.

The withdrawable SACE Emax design is particularly suited to switchboards where serviceability and operational flexibility are important. The breaker moving part is designed to interface with a compatible fixed part, allowing withdrawal for inspection, maintenance or replacement while supporting efficient management of critical electrical distribution equipment.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Generator and transformer distribution systems.
• Power control centres and withdrawable switchgear assemblies.