Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
ABB 1SDA054343R1 Tmax T5S 400 moulded case circuit breaker with PR221DS-I electronic trip unit, 400 A rated current, four-pole fixed design and front terminals for industrial power distribution.
£2,613.04
The ABB 1SDA054343R1 is a high-performance ABB SACE Tmax T5S moulded case circuit breaker (MCCB) designed for reliable protection in industrial and commercial low-voltage power distribution systems. Built as a fixed four-pole circuit breaker with front terminals, it combines robust switching performance with precise electronic protection for demanding electrical installations.
As part of the proven ABB Tmax T series, this MCCB is engineered to protect electrical circuits against overload and short-circuit conditions while supporting safe, efficient and continuous operation. The integrated PR221DS-I electronic trip unit provides solid-state protection for AC applications, helping safeguard cables, machinery and downstream electrical equipment.
With a 400 A rated current, 690 V AC rated operational voltage and four-pole fixed construction, the ABB 1SDA054343R1 is ideal for switchboards, feeder circuits, motor control centres and OEM electrical assemblies requiring reliable circuit protection and high breaking performance.
The ABB Tmax T5S range is engineered to provide dependable protection for low-voltage distribution systems where service continuity, electrical safety and reliable fault interruption are essential. The PR221DS-I electronic release supports accurate trip performance, helping protect cables, equipment and downstream circuits from damaging fault conditions.
The fixed four-pole construction, front terminal layout and compact MCCB format make the ABB 1SDA054343R1 suitable for panel builders, electrical contractors, OEMs and maintenance teams working with demanding industrial power distribution systems.
Tick the specs you need, then view products that match.
| Current | 400 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 85 kA | |
| Trip Unit | Electronic | |
| Manufacturer | ABB | |
| Series | SACE Tmax T | |
| Model | T5S 400 PR221DS-I In=400 4p F F | |
| Product ID | 1SDA054343R1 | |
| Product type | Moulded Case Circuit Breaker (MCCB) | |
| Frame size | T5S 400 | |
| Rated current (In) | 400 A | |
| Rated uninterrupted current (Iu) | 400 A | |
| Rated operational voltage | 690 V AC | |
| Rated insulation voltage (Ui) | 1000 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Number of poles | 4 | |
| Trip unit | PR221DS-I electronic release | |
| Release type | Solid-state release in AC | |
| Mounting type | Fixed | |
| Terminal connection | Front terminals | |
| Short-circuit performance level | S | |
| Rated ultimate breaking capacity | up to 85 kA at 220/230 V AC | |
| Rated service breaking capacity | up to 85 kA at 220/230 V AC | |
| Electrical durability | 7000 cycles | |
| Mechanical durability | 20000 cycles | |
| Dimensions (H × W × D) | approx. 205 × 186 × 103.5 mm | |
| Weight | approx. 6.2 kg |
The ABB 1SDA054343R1 is used to protect industrial and commercial low-voltage electrical circuits against overloads and short circuits.
This ABB Tmax T5S circuit breaker has a rated current of 400 A.
The ABB 1SDA054343R1 is a four-pole fixed moulded case circuit breaker.
This MCCB is fitted with the ABB PR221DS-I electronic trip unit, providing solid-state protection for AC applications.
It is commonly installed in industrial switchboards, distribution panels, motor control centres and OEM machinery control systems.
ABB SACE Tmax moulded case circuit breakers are trusted by panel builders, electrical engineers and industrial operators worldwide for reliable circuit protection, high breaking performance and long operational life.
We use cookies
We use essential cookies to run this site, your basket and checkout. With your permission we'd also like to use analytics and advertising cookies to understand how the site is used and to measure our adverts.