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1SDA056938R1 ABB E4V 4000 PR121/P-LSIG 4000A 4P Withdrawable Air Circuit Breaker Moving Part
ABB 1SDA056938R1 E4V 4000 four-pole withdrawable SACE Emax air circuit breaker moving part rated at 4000 A with a PR121/P-LSIG R4000 electronic overcurrent release providing LSIG protection.
£43,078.37
Why Choose the ABB E4V 4000 PR121/P-LSIG 4000A 4P Withdrawable Air Circuit Breaker?
The ABB E4V 4000 PR121/P-LSIG, order code 1SDA056938R1, is a high-performance four-pole withdrawable air circuit breaker moving part designed for protection and switching in high-current low-voltage electrical distribution systems. Part of the established ABB SACE Emax E4 series, it combines a rated current of 4000 A with the PR121/P-LSIG R4000 electronic overcurrent release.
The E4V performance level is engineered for demanding power distribution installations with high prospective short-circuit currents. Its PR121/P-LSIG electronic release provides long-time, short-time, instantaneous and ground-fault protection functions, helping safeguard switchboards, conductors and connected equipment against overloads, short circuits and earth faults.
This configuration is the moving part of a four-pole withdrawable circuit breaker. It is fitted with four auxiliary contacts and open/closed position indication, while the withdrawable architecture allows the breaker moving part to be disconnected and removed from its compatible fixed part for inspection, maintenance or replacement in critical switchgear installations.
Key Advantages
- High-capacity 4000 A air circuit breaker moving part for major low-voltage distribution systems.
- Four-pole configuration for comprehensive switching and protection requirements.
- PR121/P-LSIG R4000 electronic overcurrent release.
- Provides long-time, short-time, instantaneous and ground-fault protection.
- V performance class for demanding high-fault-level power distribution applications.
- Withdrawable construction simplifies breaker isolation, inspection, servicing and replacement.
- Four auxiliary contacts provide circuit-breaker status signalling.
Key Features
- ABB SACE Emax E4V air circuit breaker moving part.
- 4000 A rated current.
- 4-pole configuration.
- PR121/P-LSIG R4000 electronic overcurrent release.
- Withdrawable (W) moving-part construction.
- Long-time overload protection.
- Short-time short-circuit protection.
- Instantaneous short-circuit protection.
- Ground-fault protection.
- Four auxiliary contacts for status signalling.
- Open/closed circuit-breaker position indication.
- Designed for high-current industrial, commercial and infrastructure power distribution.
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB E4V 4000 provide primary switching and protection for high-current low-voltage electrical systems. With its 4000 A current rating and E4V high-performance construction, this SACE Emax breaker moving part is suited to major distribution systems where dependable interruption of substantial fault currents is essential.
The PR121/P-LSIG electronic release provides comprehensive LSIG protection by responding to long-time overloads, short-time faults, severe instantaneous short circuits and ground faults. Combined with the withdrawable Emax architecture, these functions support reliable protection coordination while allowing convenient breaker isolation and maintenance within compatible switchgear.
Typical Applications
- Main incoming protection in high-capacity low-voltage switchboards.
- Industrial power distribution and process plants.
- Transformer secondary and distribution protection.
- Generator and utility distribution systems.
- Data centres and critical infrastructure power systems.
- Large commercial and manufacturing facilities.
- High-current feeder and distribution protection.
Technical Specifications
| Product family | SACE Emax |
|---|---|
| Series / frame | E4V |
| ABB order code | 1SDA056938R1 |
| EAN | 8015644582784 |
| Product type | Air circuit breaker moving part |
| Rated current (In) | 4000 A |
| Number of poles | 4 |
| Version | Withdrawable moving part |
| Trip unit | PR121/P-LSIG electronic overcurrent release |
| Rating plug | R4000 |
| Protection functions | Long-time, short-time, instantaneous and ground fault (LSIG) |
| Short-circuit performance level | V |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Product net weight | 116 kg |
Frequently Asked Questions
What is the ABB 1SDA056938R1?
The ABB 1SDA056938R1 is the moving part of an E4V 4000 four-pole withdrawable SACE Emax air circuit breaker, rated at 4000 A and equipped with a PR121/P-LSIG R4000 electronic overcurrent release.
What protection functions does the PR121/P-LSIG release provide?
The PR121/P-LSIG provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection functions.
Is the ABB 1SDA056938R1 fixed or withdrawable?
This product is the moving part of a withdrawable circuit breaker and is designed for use with the appropriate compatible fixed part in an ABB SACE Emax switchgear assembly.
Does the ABB 1SDA056938R1 include auxiliary contacts?
Yes. The breaker moving part is fitted with four auxiliary contacts together with circuit-breaker open/closed position indication.
Where is the E4V 4000 PR121/P-LSIG typically used?
It is designed for high-current low-voltage distribution applications including industrial switchboards, transformer distribution systems, power centres, data centres, large commercial facilities and critical infrastructure installations.
Trusted Protection for Critical Power Systems
ABB SACE Emax air circuit breakers provide high-performance switching and protection for demanding low-voltage power distribution systems, combining high current capacity, comprehensive electronic protection and withdrawable construction for maintainable critical switchgear installations.
