ABB 1SDA054021R1 T4S 250 PR221DS-LS/I 100A three pole fixed moulded case circuit breaker with front terminals and solid-state release for AC circuit protection.
£1,507.23
The ABB 1SDA054021R1 is a high-performance moulded case circuit breaker (MCCB) from the ABB SACE Tmax T range, designed to provide dependable protection for industrial and commercial electrical distribution systems. Identified as T4S 250 PR221DS-LS/I In=100 3p F F, this breaker is engineered for applications requiring accurate electronic protection, compact installation and proven ABB reliability.
This ABB Tmax T4S breaker features a PR221DS-LS/I solid-state release, providing electronic protection functions for AC circuits. Its fixed three-pole construction with front terminals supports efficient installation inside control panels, distribution boards and switchgear assemblies, while its S performance level provides strong short-circuit breaking capability for demanding installations.
With a 250 A frame size, 100 A rated current and rated operational voltage up to 690 V AC, the ABB 1SDA054021R1 is suitable for robust three-phase circuit protection. Its compact format, electronic trip unit and trusted ABB engineering make it a reliable choice for industrial electrical systems, OEM machinery and panel building applications.
Moulded case circuit breakers such as the ABB Tmax T4S protect electrical circuits from overload and short-circuit fault conditions. By interrupting abnormal current flow, they help safeguard cables, machinery, control panels and downstream electrical equipment.
The ABB 1SDA054021R1 is designed for applications where compact three-pole protection and electronic trip functionality are required. Its PR221DS-LS/I solid-state release provides dependable protection performance, while the fixed front-terminal design supports efficient panel building, installation and maintenance.
| Current | 100 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | SACE Tmax T |
| Model | T4S 250 PR221DS-LS/I In=100 3p F F |
| Product ID | 1SDA054021R1 |
| Product type | Moulded case circuit breaker |
| Frame size | T4S 250 |
| Rated current | 100 A |
| Rated uninterrupted current | 250 A |
| Number of poles | 3 pole |
| Trip unit | PR221DS-LS/I solid-state release |
| Release type | Electronic / solid-state release for AC |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 8 kV |
| Short-circuit performance level | S |
| Mounting / execution | Fixed |
| Terminal type | Front terminals |
| Standards | IEC |
| Dimensions (W × H × D) | approx. 105 × 205 × 103.5 mm |
| Product net weight | approx. 3.5 kg |
| EAN | 8015644551070 |
The ABB 1SDA054021R1 is used to protect electrical circuits from overloads and short-circuit faults in industrial and commercial distribution systems.
It is a moulded case circuit breaker from the ABB SACE Tmax T series.
The ABB 1SDA054021R1 has a 100 A rated current.
This breaker uses a PR221DS-LS/I solid-state release for electronic circuit protection in AC applications.
The ABB 1SDA054021R1 is a three-pole fixed moulded case circuit breaker.
ABB Tmax moulded case circuit breakers are widely used by panel builders, electrical contractors and industrial engineers for dependable circuit protection, robust switching performance and long-term reliability in demanding installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...