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1SDA054605R1 ABB PR221DS-LS/I In=250 T4 3p Electronic Trip Unit
ABB PR221DS-LS/I In=250 T4 3p electronic trip unit providing long-time and short-circuit protection for ABB Tmax T4 moulded case circuit breakers.
£1,531.91
Why Choose the ABB PR221DS-LS/I In=250 T4 3p Electronic Trip Unit?
The ABB PR221DS-LS/I In=250 T4 3p is an advanced electronic trip unit designed for ABB Tmax T4 moulded case circuit breakers, providing reliable protection and accurate monitoring for low-voltage electrical distribution systems. As part of the ABB Tmax protection accessory range, this trip unit delivers dependable overload and short-circuit protection functionality for industrial and commercial installations.
Engineered for use with compatible ABB Tmax T4 circuit breakers, the PR221DS-LS/I combines electronic protection technology with compact construction to improve system safety and operational reliability. Its integrated protection functions help safeguard electrical equipment against abnormal current conditions while maintaining efficient circuit breaker operation.
With a rated current setting of 250 A and three-pole Tmax T4 compatibility, the ABB PR221DS-LS/I electronic release is suitable for applications requiring reliable long-time and short-circuit protection in modern electrical distribution systems.
Key Advantages
- Electronic LS/I protection for accurate overload and short-circuit protection.
- 250 A rated current setting suitable for medium-power distribution applications.
- Designed specifically for ABB Tmax T4 moulded case circuit breakers.
- Improves circuit breaker protection performance and system reliability.
- Compact design enables efficient integration into MCCB assemblies.
- Reliable ABB electronic protection technology for industrial applications.
Key Features
- ABB PR221DS-LS/I electronic trip unit.
- Compatible with ABB Tmax T4 circuit breakers.
- Long-time (L) overload protection.
- Short-time / instantaneous (S/I) short-circuit protection.
- Rated current setting: 250 A.
- Three-pole Tmax T4 application.
- Electronic protection release for improved accuracy.
- Designed for low-voltage industrial distribution systems.
Reliable Protection for Industrial Power Systems
The ABB PR221DS-LS/I electronic trip unit enhances Tmax T4 circuit breaker performance by providing precise electronic protection against overload and short-circuit conditions. This helps protect cables, motors, machinery and electrical distribution equipment from damaging fault currents.
ABB Tmax electronic releases are designed to provide dependable protection solutions for industrial environments, combining accurate current sensing with straightforward integration into established MCCB platforms.
Typical Applications
- Industrial switchboards and distribution panels.
- Motor and machinery protection systems.
- Commercial electrical distribution equipment.
- Industrial automation installations.
- Power management systems.
- Low-voltage protection assemblies.
Technical Specifications
| Series | Tmax T4 |
|---|---|
| Order code | 1SDA054605R1 |
| Product type | Electronic trip unit |
| Compatible circuit breaker | ABB Tmax T4 |
| Rated current setting | 250 A |
| Protection functions | Long-time overload and short-circuit protection |
| Trip unit type | Electronic LS/I release |
| Number of poles | 3 poles |
| Application voltage | Low-voltage AC distribution systems |
Frequently Asked Questions
What is the ABB PR221DS-LS/I In=250 T4 3p used for?
This electronic trip unit provides overload and short-circuit protection for compatible ABB Tmax T4 moulded case circuit breakers.
What is the rated current setting of this trip unit?
The ABB PR221DS-LS/I In=250 has a rated current setting of 250 A.
Which circuit breaker series is this release compatible with?
The trip unit is designed for use with ABB Tmax T4 moulded case circuit breakers.
What protection functions are included?
The PR221DS-LS/I provides long-time overload and short-circuit protection functions.
How many poles is this application designed for?
This trip unit configuration is intended for three-pole ABB Tmax T4 circuit breaker applications.
Trusted by Industrial Engineers Worldwide
ABB Tmax electronic trip units are widely selected by electrical engineers and system designers for accurate protection, reliable operation and seamless integration with ABB moulded case circuit breakers.
