1SDA054379R1 ABB T5L400 PR222DS/P-LSIG 400 A 4-Pole MCCB

Why Choose the ABB T5L400 PR222DS/P-LSIG 400 A 1SDA054379R1 Circuit Breaker?

The ABB 1SDA054379R1 is a high-performance SACE Tmax T5L 400 moulded case circuit breaker (MCCB) designed for reliable protection and isolation of demanding low-voltage electrical distribution systems. Configured as a fixed four-pole breaker with front terminals, it combines a 400 A rated current with ABB's PR222DS/P-LSIG electronic trip unit.

Part of the proven ABB SACE Tmax T5 series, the T5L400 provides comprehensive electronic LSIG protection, covering long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault conditions. The adjustable electronic release enables protection characteristics to be coordinated with cables, downstream equipment and other protective devices in industrial and commercial distribution networks.

The PR222DS/P-LSIG release provides a 160–400 A overload adjustment range, a 240–4,000 A short-time delayed short-circuit adjustment range and a 600–4,800 A instantaneous short-circuit adjustment range. Earth-fault protection is adjustable from 0.2–1 × In, while the neutral setting can be selected as OFF, 50% or 100%. Combined with a 120 kA ultimate breaking capacity at 380–415 V AC, this makes the 1SDA054379R1 a capable solution for demanding four-pole power distribution systems.

Key Advantages

• High-performance ABB SACE Tmax T5L 400 moulded case circuit breaker.
• 400 A rated current for substantial industrial and commercial loads.
• Four-pole configuration for multipole low-voltage distribution systems.
• PR222DS/P-LSIG electronic trip unit for precise and adjustable circuit protection.
• LSIG protection functions cover overload, short-time, instantaneous and earth-fault conditions.
• 160–400 A overload adjustment range for flexible protection coordination.
• Selectable OFF, 50% or 100% neutral setting.
• 120 kA ultimate breaking capacity at 380–415 V AC for high-fault-level installations.
• Fixed mounting with front terminals for straightforward switchboard integration.

Key Features

• ABB SACE Tmax T5L 400 circuit breaker platform.
• 400 A rated current.
• 4-pole construction.
• PR222DS/P-LSIG solid-state electronic release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Adjustable earth-fault protection.
• Adjustable overload protection from 160–400 A.
• Adjustable short-time protection from 240–4,000 A.
• Adjustable instantaneous protection from 600–4,800 A.
• Earth-fault adjustment from 0.2–1 × In.
• 120 kA Icu at 380–415 V AC.
• Fixed circuit breaker configuration with front terminals.

Reliable Electronic Protection for Power Distribution

The ABB SACE Tmax T5L platform is designed for demanding low-voltage power distribution where high breaking performance and flexible protection settings are important. With a 400 A frame and rated current, the 1SDA054379R1 provides substantial circuit capacity while allowing protection settings to be coordinated with cables, downstream equipment and other protective devices.

Its PR222DS/P-LSIG electronic trip unit addresses long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault conditions. The combination of adjustable LSIG protection, selectable neutral settings and high interruption capability provides comprehensive protection and coordination for industrial and commercial four-pole electrical distribution networks.

Typical Applications

• Industrial low-voltage power distribution systems.
• Main and sub-distribution switchboards.
• Three-phase four-wire electrical distribution panels.
• Manufacturing and process installations.
• Commercial and infrastructure power distribution.
• Applications requiring adjustable electronic earth-fault protection.