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1SDA055530R1 ABB E4H 4000A 4P PR121/P-LSIG Air Circuit Breaker
ABB 1SDA055530R1 is a SACE Emax E4H 4000 A four-pole air circuit breaker equipped with a PR121/P-LSIG electronic trip unit for long-time, short-time, instantaneous and earth-fault protection.
£44,293.94
Why Choose the ABB E4H/f 4000 PR121/P-LSIG 1SDA055530R1 Circuit Breaker?
The ABB 1SDA055530R1 is a SACE Emax E4H 4000 A four-pole air circuit breaker designed for protection and switching in demanding low-voltage power distribution systems. It combines the high-current E4H platform with an ABB PR121/P-LSIG electronic trip unit rated for a nominal current of 4000 A.
The PR121/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. This comprehensive LSIG protection combination helps safeguard high-current distribution circuits against a broad range of overcurrent and earth-fault conditions.
With its four-pole configuration and 4000 A current rating, the 1SDA055530R1 is suited to major incoming supplies and high-capacity distribution circuits. As part of the ABB SACE Emax range, it is designed for integration into low-voltage switchboards and power distribution assemblies requiring robust air circuit breaker protection.
Key Advantages
- High-current 4000 A SACE Emax E4H circuit breaker platform.
- Four-pole configuration for three-phase distribution systems requiring neutral switching.
- PR121/P-LSIG electronic trip unit provides comprehensive electronic protection.
- LSIG protection functions cover overload, short-time, instantaneous and earth-fault conditions.
- Suitable for demanding industrial, commercial and infrastructure distribution systems.
- Genuine ABB SACE Emax construction for compatible low-voltage switchgear.
Key Features
- ABB SACE Emax E4H air circuit breaker.
- 4000 A nominal current.
- Four-pole (4P) configuration.
- PR121/P-LSIG electronic overcurrent release.
- LSIG protection: long-time, short-time, instantaneous and earth fault.
- Designed for high-current low-voltage power distribution.
- Suitable for main incoming and high-capacity feeder protection.
- Part of ABB's New Emax product group.
Comprehensive LSIG Protection for High-Current Distribution
The ABB PR121/P-LSIG release combines four key protection functions. Long-time protection responds to sustained overloads, short-time protection supports controlled short-circuit response and system selectivity, instantaneous protection provides rapid operation during severe short circuits, and earth-fault protection responds to current flowing through unintended paths to earth.
Combined with the 4000 A E4H circuit breaker platform, these functions make the 1SDA055530R1 suitable for high-capacity electrical distribution networks where comprehensive electronic protection and dependable fault interruption are required.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- High-current incoming circuits.
- High-capacity feeder protection.
- Manufacturing and process plants.
- Commercial and infrastructure electrical systems.
- Power distribution and switchgear assemblies.
Technical Specifications
| Series | SACE Emax |
|---|---|
| Product designation | E4H/f 4000 PR121/P-LSIG In=4000A 4p |
| ABB order code | 1SDA055530R1 |
| Product type | Air circuit breaker |
| Frame / performance level | E4H |
| Nominal current | 4000 A |
| Number of poles | 4P |
| Trip unit | PR121/P-LSIG |
| Release type | Electronic |
| Protection functions | Long-time, short-time, instantaneous and earth fault (LSIG) |
| Product group | 310513-New Emax |
Frequently Asked Questions
What is the ABB 1SDA055530R1?
The ABB 1SDA055530R1 is a SACE Emax E4H 4000 A four-pole air circuit breaker equipped with a PR121/P-LSIG electronic trip unit.
What is the current rating of the ABB 1SDA055530R1?
The circuit breaker has a nominal current rating of 4000 A, making it suitable for high-current low-voltage distribution applications.
Which trip unit is fitted to the ABB 1SDA055530R1?
It is equipped with an ABB PR121/P-LSIG electronic trip unit.
What protection functions does PR121/P-LSIG provide?
The PR121/P-LSIG provides long-time, short-time, instantaneous and earth-fault protection, commonly abbreviated as LSIG.
How many poles does the ABB 1SDA055530R1 have?
The 1SDA055530R1 is a four-pole (4P) SACE Emax circuit breaker.
Trusted ABB Power Distribution Protection
ABB SACE Emax air circuit breakers provide purpose-designed switching and electronic protection for demanding low-voltage power distribution systems, supporting reliable integration into industrial, commercial and infrastructure switchgear.
