ABB 1SDA053999R1 SACE Tmax T4N 250 moulded case circuit breaker with PR221DS-LS/I electronic trip unit, 250 A rated current and fixed 3-pole configuration for low voltage power distribution.
The ABB 1SDA053999R1 is a high-performance Tmax T4N moulded case circuit breaker (MCCB) engineered to provide dependable protection for low voltage electrical distribution systems. Featuring an advanced PR221DS-LS/I electronic trip unit, this fixed three-pole circuit breaker delivers accurate overload and short circuit protection for industrial and commercial power installations.
Designed as part of the trusted ABB SACE Tmax T series, this breaker combines robust construction with intelligent electronic protection, helping improve system reliability while reducing unnecessary downtime. Its fixed mounting arrangement and front terminal configuration simplify installation into switchboards and distribution panels.
With a 250 A rated current, 3-pole configuration and electronic LS/I protection, the ABB 1SDA053999R1 is suitable for protecting feeders, machinery, motor control centres and power distribution systems where dependable protection and selective coordination are required.
The ABB Tmax T4N series is designed to provide dependable protection against overloads and fault currents while maintaining continuity of service. Electronic trip units offer improved protection accuracy and adjustable settings, making them well suited to modern industrial electrical installations.
Whether installed within OEM machinery, industrial control panels or commercial distribution boards, the ABB 1SDA053999R1 helps protect valuable electrical assets while supporting safe and reliable system operation.
| Current | 250 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | SACE Tmax T |
| Model | T4N 250 PR221DS-LS/I |
| SKU | 1SDA053999R1 |
| Product type | Moulded Case Circuit Breaker (MCCB) |
| Rated current (In) | 250 A |
| Trip unit | PR221DS-LS/I electronic release |
| Number of poles | 3 |
| Mounting type | Fixed |
| Terminal type | Front terminals |
| Protection functions | Long-time and short-time / instantaneous protection (LS/I) |
| Application | Low voltage power distribution |
It is a moulded case circuit breaker designed to protect low voltage electrical systems against overloads and short circuits.
The ABB 1SDA053999R1 has a 250 A rated current.
This model is supplied as a 3-pole fixed circuit breaker.
The breaker incorporates an ABB PR221DS-LS/I electronic trip unit providing long-time and short circuit protection functions.
It is commonly installed in switchboards, distribution panels, motor control centres and industrial electrical systems.
ABB SACE Tmax moulded case circuit breakers are trusted by panel builders, electrical contractors and industrial engineers worldwide for delivering dependable protection, long service life and reliable performance in demanding low voltage power distribution applications.
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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...