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1SDA054693R1 ABB PR221DS-I In=320 T5 3-Pole Electronic Trip Unit
ABB 1SDA054693R1 PR221DS-I is a 320 A three-pole electronic trip unit providing instantaneous short-circuit protection for compatible SACE Tmax T5 moulded-case circuit breakers.
£1,092.66
Why Choose the ABB PR221DS-I In=320 T5 3-Pole Electronic Trip Unit?
The ABB 1SDA054693R1 is a PR221DS-I electronic trip unit with a rated current of 320 A, designed for use with three-pole ABB SACE Tmax T5 moulded-case circuit breakers. Part of the ABB Tmax T4–T8 product family, it provides electronic instantaneous short-circuit protection for industrial and commercial low-voltage electrical systems.
The PR221DS platform uses electronic current sensing and trip processing to provide dependable protection for compatible Tmax circuit breakers. This I-function version is intended for instantaneous protection, responding rapidly when fault current exceeds the configured short-circuit threshold.
With a rated current of 320 A and a three-pole configuration, the PR221DS-I is suited to applications where instantaneous short-circuit protection is required and overload protection is provided separately or by another coordinated device. Its integration with the Tmax T5 platform provides a compact solution for industrial switchboards, machinery and power distribution equipment.
Key Advantages
- Electronic instantaneous short-circuit protection for compatible Tmax T5 breakers.
- 320 A rated current for industrial electrical applications.
- I protection function for rapid response to high fault currents.
- Three-pole configuration for three-phase circuits.
- Electronic protection technology provides consistent trip performance.
- Designed specifically for ABB SACE Tmax T5 moulded-case circuit breakers.
Key Features
- ABB PR221DS electronic trip unit.
- 320 A rated current (In).
- Instantaneous (I) protection function.
- Designed for ABB SACE Tmax T5 circuit breakers.
- 3-pole configuration.
- Rapid electronic response to short-circuit fault currents.
- Suitable for coordinated protection arrangements.
- Designed for low-voltage industrial power distribution.
Fast Electronic Short-Circuit Protection
Instantaneous protection is designed to disconnect a circuit rapidly when current rises to a level associated with a severe short circuit. The electronic PR221DS release monitors current and commands the circuit breaker to open when the applicable instantaneous protection threshold is exceeded.
The PR221DS-I configuration is particularly useful where the circuit protection architecture requires instantaneous short-circuit protection from the Tmax T5 breaker while overload protection is managed separately. This supports coordinated protection arrangements for machinery, feeders and industrial distribution circuits.
Typical Applications
- Industrial low-voltage electrical systems.
- ABB SACE Tmax T5 moulded-case circuit breakers.
- Three-phase industrial circuits and feeders.
- Machinery and equipment protection systems.
- Industrial switchboards and control panels.
- Circuits using separately coordinated overload protection.
Technical Specifications
| Product family | SACE Tmax T4–T8 |
|---|---|
| Trip unit series | PR221DS |
| ABB order code | 1SDA054693R1 |
| Product type | Electronic trip unit / electronic release |
| Rated current (In) | 320 A |
| Protection function | I – instantaneous short-circuit protection |
| Number of poles | 3 |
| Compatible circuit breaker | ABB SACE Tmax T5 |
Frequently Asked Questions
What is the ABB 1SDA054693R1?
The ABB 1SDA054693R1 is a PR221DS-I electronic trip unit rated at 320 A for compatible three-pole ABB SACE Tmax T5 moulded-case circuit breakers.
What protection function does the PR221DS-I provide?
The PR221DS-I provides instantaneous short-circuit protection, allowing rapid circuit-breaker operation when a high fault current exceeds the applicable trip threshold.
What is the rated current of the ABB 1SDA054693R1?
The PR221DS-I electronic trip unit has a rated current (In) of 320 A.
Does the PR221DS-I provide thermal overload protection?
This PR221DS-I version is specified with the I instantaneous protection function; where overload protection is required, it should be provided as part of the coordinated protection system.
Which circuit breaker is the 1SDA054693R1 designed for?
It is designed for compatible three-pole ABB SACE Tmax T5 moulded-case circuit breakers.
Trusted ABB Circuit Protection Technology
ABB SACE Tmax electronic trip units provide dependable fault protection for industrial low-voltage systems, supporting coordinated circuit protection in switchboards, machinery and power distribution installations.
