Why Choose the ABB 1SDA100428R1 Tmax XT5S Circuit Breaker?
The ABB 1SDA100428R1 is a high-performance 400 A moulded case circuit breaker (MCCB) designed to protect industrial and commercial low-voltage power distribution systems against overloads and short circuits. Part of the advanced ABB SACE Tmax XT5S range, this three-pole circuit breaker combines a compact fixed design, high fault interruption capability and precise electronic protection.
The breaker is equipped with an Ekip Dip LSI solid-state trip unit, providing adjustable long-time overload, short-time short-circuit and instantaneous short-circuit protection. These protection functions allow engineers to coordinate the breaker with cables, downstream equipment and other protective devices, helping improve selectivity and continuity throughout the electrical installation.
With a rated uninterrupted current of 400 A, an operating voltage of up to 690 V AC and a breaking capacity of 50 kA at 380–440 V AC, the ABB 1SDA100428R1 is ideal for demanding switchboards, distribution panels, motor control centres and OEM electrical equipment. Its fixed three-pole configuration and front terminals support straightforward installation inside low-voltage assemblies.
Key Advantages
- High-performance 400 A moulded case circuit breaker.
- Ekip Dip LSI electronic trip unit for adjustable circuit protection.
- 50 kA breaking capacity at 380–440 V AC.
- Long-time, short-time and instantaneous protection functions.
- Compact fixed design for efficient switchboard installation.
- Front terminals provide convenient conductor access and maintenance.
Key Features
- ABB SACE Tmax XT5S series.
- 400 A rated uninterrupted current.
- Three-pole fixed MCCB.
- Ekip Dip LSI solid-state release.
- Rated operating voltage up to 690 V AC.
- Rated insulation voltage of 1000 V.
- Rated impulse withstand voltage of 8 kV.
- Front terminal connection arrangement.
Reliable Protection for Industrial Power Distribution
Moulded case circuit breakers such as the ABB XT5S 400 monitor electrical circuits and interrupt excessive current before it can damage cables, machinery or power distribution equipment. This helps improve installation safety, reduce unplanned downtime and protect valuable electrical assets.
The Ekip Dip LSI trip unit provides adjustable long-time, short-time and instantaneous protection settings. This enables accurate coordination between upstream and downstream devices, making the breaker suitable for installations where selective fault isolation and operational continuity are essential.
Typical Applications
- Industrial low-voltage switchboards.
- Commercial power distribution panels.
- Motor control centres.
- Manufacturing and processing equipment.
- Generator and transformer distribution systems.
- OEM machinery and automation installations.
