ABB 1SDA100428R1 SACE Tmax XT5S 400 A three-pole fixed moulded case circuit breaker with front terminals and an Ekip Dip LSI electronic trip unit.
£1,752.65
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.
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.
| Current | 400 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | SACE Tmax XT |
| Model | XT5S 400 Ekip Dip LSI In=400 3p F F |
| Product ID | 1SDA100428R1 |
| Product type | Moulded case circuit breaker |
| Frame size | XT5 |
| Rated uninterrupted current | 400 A |
| Number of poles | 3 |
| Trip unit | Ekip Dip LSI electronic release |
| Short-circuit performance level | S |
| Rated operating voltage | Up to 690 V AC |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 8 kV |
| Breaking capacity at 220–240 V AC | 85 kA |
| Breaking capacity at 380–440 V AC | 50 kA |
| Breaking capacity at 500–525 V AC | 30 kA |
| Breaking capacity at 690 V AC | 25 kA |
| Rated short-time withstand current | 6 kA |
| Mounting version | Fixed |
| Terminal connection | Front terminals |
| Current type | AC |
| Power loss | 19 W |
| Electrical durability | 7,000 operating cycles |
| Mechanical durability | 20,000 operating cycles |
| Standards | IEC 60947 |
| Dimensions (H × W × D) | 205 × 140 × 103.5 mm |
| Weight | Approx. 4.82 kg |
| EAN | 8056221005050 |
| HS Code | 85362090 |
| Country of Manufacture | Italy |
The ABB 1SDA100428R1 protects industrial and commercial low-voltage circuits against overloads and short circuits.
The XT5S circuit breaker has a rated uninterrupted current of 400 A.
It is fitted with an Ekip Dip LSI electronic trip unit, providing adjustable long-time, short-time and instantaneous protection.
The breaker has a rated short-circuit breaking capacity of 50 kA at 415 V AC.
This model is a fixed three-pole circuit breaker with front terminals for installation inside switchboards and low-voltage distribution panels.
ABB SACE Tmax XT moulded case circuit breakers are widely used by electrical engineers, panel builders and industrial operators to provide precise, dependable protection for modern low-voltage power distribution systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...