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1SDA058193R1 ABB PR121/P-LSI E1-E6 Electronic Trip Unit
ABB 1SDA058193R1 is a PR121/P-LSI electronic protection trip unit for compatible SACE Emax E1-E6 air circuit breakers, providing long-time, short-time and instantaneous overcurrent protection.
£2,062.73
Why Choose the ABB PR121/P-LSI E1-E6 1SDA058193R1 Trip Unit?
The ABB 1SDA058193R1 is a PR121/P-LSI electronic protection trip unit designed for compatible ABB SACE Emax E1-E6 air circuit breakers. As part of the ABB New Emax protection system, it provides electronic overcurrent protection for low-voltage power distribution applications requiring dependable monitoring and circuit protection.
The PR121/P-LSI provides long-time, short-time and instantaneous protection functions. These LSI functions allow a compatible Emax circuit breaker to respond to sustained overloads, short-circuit conditions requiring selective coordination and severe faults requiring rapid interruption, helping protect electrical distribution equipment and connected loads.
Designed for the ABB SACE Emax E1-E6 platform, the 1SDA058193R1 provides a common electronic protection solution across compatible Emax frame sizes. Its protection characteristics are configured in conjunction with the appropriate breaker, current sensors and rating plug, allowing the trip unit to form part of a coordinated protection system for industrial and commercial low-voltage installations.
Key Advantages
- Genuine ABB PR121/P electronic protection trip unit.
- LSI protection for comprehensive overcurrent and short-circuit protection.
- Provides long-time, short-time and instantaneous protection.
- Designed for compatible ABB SACE Emax E1-E6 air circuit breakers.
- Electronic protection enables accurate and repeatable circuit-breaker tripping characteristics.
- Suitable for industrial and commercial low-voltage power distribution systems.
Key Features
- ABB PR121/P-LSI electronic trip unit.
- Compatible with SACE Emax E1-E6 circuit breaker families.
- Long-time (L) protection for overload conditions.
- Short-time (S) protection for selective short-circuit protection.
- Instantaneous (I) protection for rapid response to severe short circuits.
- Designed for use within the ABB Emax electronic measuring and protection system.
- Works with the appropriate rating plug to establish the rated-current reference for the protection system.
- Suitable for protection of low-voltage electrical distribution networks.
Electronic Protection for ABB SACE Emax Circuit Breakers
Electronic trip units monitor electrical current and command the circuit breaker to trip when configured protection thresholds are exceeded. The ABB PR121/P-LSI combines multiple protection functions so that compatible Emax breakers can protect against both sustained overload conditions and short circuits while supporting selective coordination within the electrical distribution system.
Long-time protection addresses overloads that persist beyond the permitted operating period, while short-time protection can provide a controlled delay for coordination with downstream protective devices. Instantaneous protection responds rapidly to high-level short-circuit faults. Together, these functions make the PR121/P-LSI suitable for a broad range of industrial power distribution applications.
Typical Applications
- ABB SACE Emax E1-E6 air circuit breaker protection.
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Commercial building electrical distribution.
- Manufacturing and process installations.
- Feeder and incomer circuit protection.
- Maintenance and replacement of compatible Emax electronic protection units.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB product group | 310513-New Emax |
| Order code | 1SDA058193R1 |
| Product type | Electronic protection trip unit |
| Trip unit family | PR121/P |
| Protection configuration | LSI |
| Long-time protection | L |
| Short-time protection | S |
| Instantaneous protection | I |
| Compatible circuit breaker range | ABB SACE Emax E1-E6 |
| Application | Low-voltage air circuit breaker protection |
Frequently Asked Questions
What is the ABB 1SDA058193R1 used for?
The ABB 1SDA058193R1 is a PR121/P-LSI electronic trip unit used to provide overcurrent and short-circuit protection for compatible ABB SACE Emax E1-E6 air circuit breakers.
What protection functions does the PR121/P-LSI provide?
The PR121/P-LSI provides long-time, short-time and instantaneous protection, collectively identified as LSI protection.
Which ABB circuit breakers are compatible with the 1SDA058193R1?
The 1SDA058193R1 is designed for compatible ABB SACE Emax E1-E6 air circuit breaker configurations.
What does the LSI designation mean?
LSI identifies the trip unit's long-time (L), short-time (S) and instantaneous (I) overcurrent protection functions.
Does the PR121/P-LSI use a rating plug?
Yes. In compatible ABB SACE Emax protection systems, the appropriate rating plug establishes the rated-current reference used by the electronic trip unit for its protection settings.
Trusted ABB Circuit Protection Technology
ABB SACE Emax electronic trip units provide configurable protection for low-voltage power distribution systems, helping compatible air circuit breakers respond reliably to overload and short-circuit conditions in industrial and commercial installations.
