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1SDA056921R1 ABB E4V4000 PR121/P-LSI 4000A 4P Fixed Air Circuit Breaker
ABB 1SDA056921R1 E4V4000 PR121/P-LSI is a 4000 A four-pole fixed SACE Emax air circuit breaker with rear horizontal terminals and a PR121/P-LSI electronic release providing long-time, short-time and instantaneous overcurrent protection.
£36,236.72
Why Choose the ABB E4V4000 PR121/P-LSI 4000A 4P Fixed Air Circuit Breaker?
The ABB E4V4000 PR121/P-LSI, order code 1SDA056921R1, is a high-performance SACE Emax E4V air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. Rated at 4000 A, this four-pole fixed circuit breaker combines the ABB SACE Emax platform with a PR121/P-LSI electronic overcurrent release.
The PR121/P-LSI release provides long-time (L), short-time (S) and instantaneous (I) overcurrent protection, helping protect electrical installations against sustained overloads and short-circuit conditions. Short-time protection supports selective coordination between protective devices, while instantaneous protection provides rapid interruption of severe short-circuit faults.
This version is supplied as a four-pole fixed circuit breaker with rear horizontal terminals, providing a robust arrangement for permanent switchboard installation. The E4V performance class is designed for high-fault-level applications, making this breaker suitable for main incoming circuits, high-current feeders and critical distribution systems.
Key Advantages
- High-current 4000 A SACE Emax E4V air circuit breaker for demanding low-voltage distribution.
- Four-pole configuration provides switching and protection across four conductors.
- PR121/P-LSI electronic release provides long-time, short-time and instantaneous overcurrent protection.
- Short-time protection supports selective coordination between upstream and downstream protective devices.
- Instantaneous protection provides rapid interruption of severe short-circuit faults.
- Fixed construction provides robust permanent integration into electrical switchboards.
- Rear horizontal terminals provide a practical connection arrangement for switchboard busbars.
- E4V high-performance construction is suited to demanding industrial and infrastructure distribution systems.
Key Features
- ABB SACE Emax E4V series.
- 4000 A rated current.
- Four-pole circuit-breaker configuration.
- PR121/P-LSI electronic overcurrent release.
- Long-time overload protection (L).
- Short-time short-circuit protection (S).
- Instantaneous short-circuit protection (I).
- Fixed execution.
- Rear horizontal main terminals.
- High short-circuit performance for demanding distribution systems.
- Designed for high-capacity low-voltage power distribution.
Selective 4000A Protection for High-Capacity Distribution
The ABB SACE Emax E4V platform is engineered for high-capacity low-voltage distribution systems where dependable switching and coordinated electronic overcurrent protection are required. The PR121/P-LSI release combines long-time overload, short-time short-circuit and instantaneous short-circuit protection, helping safeguard busbars, feeders and connected electrical equipment against damaging fault conditions.
With its 4000 A rating, four-pole construction, fixed execution and rear horizontal terminals, the E4V4000 is particularly suited to main switchboards and other high-current distribution assemblies. Its 100 kA short-circuit performance at 480 V and 100 kA short-time current capability make it suitable for installations with substantial prospective fault levels.
Typical Applications
- Main low-voltage electrical distribution switchboards.
- High-capacity industrial power distribution systems.
- Main incoming and high-current feeder protection.
- Commercial and infrastructure electrical distribution.
- Manufacturing and process-industry switchgear.
- Transformer and generator distribution systems.
- High-current busbar and distribution-board protection.
- Electrical installations requiring four-pole switching and selective overcurrent protection.
Technical Specifications
| Series | SACE Emax E4V |
|---|---|
| ABB order code | 1SDA056921R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Rated current (In) | 4000 A |
| Number of poles | 4 |
| Execution | Fixed |
| Main terminal arrangement | Rear horizontal |
| Protection release | PR121/P-LSI |
| Release technology | Electronic |
| Protection functions | Long-time (L), short-time (S) and instantaneous (I) |
| Short-circuit performance class | E4V |
| Short-circuit current at 480 V | 100 kA |
| Short-time current | 100 kA |
Frequently Asked Questions
What is the ABB 1SDA056921R1?
The ABB 1SDA056921R1 is an E4V4000 SACE Emax air circuit breaker rated at 4000 A, with four poles, fixed construction, rear horizontal terminals and a PR121/P-LSI electronic overcurrent release.
What is the rated current of the E4V4000 PR121/P-LSI?
The ABB E4V4000 PR121/P-LSI 1SDA056921R1 has a rated current of 4000 A.
What protection functions does the PR121/P-LSI release provide?
The PR121/P-LSI electronic release provides long-time overload protection (L), short-time short-circuit protection (S) and instantaneous short-circuit protection (I).
Is ABB 1SDA056921R1 fixed or withdrawable?
ABB 1SDA056921R1 is a fixed four-pole air circuit breaker.
What terminal arrangement does ABB 1SDA056921R1 use?
The ABB 1SDA056921R1 is supplied with rear horizontal terminals for connection within the switchboard.
What is the short-circuit performance of the E4V4000?
The E4V platform provides a short-circuit current rating of 100 kA at 480 V for this frame configuration, together with a 100 kA short-time current rating.
Where is the ABB E4V4000 PR121/P-LSI typically used?
It is suited to high-capacity low-voltage distribution applications including main switchboards, industrial distribution systems, incoming feeders, transformer and generator distribution, and infrastructure power systems requiring selective overcurrent protection.
Trusted by Electrical Engineers Worldwide
ABB SACE Emax air circuit breakers are widely used in industrial, commercial and infrastructure power distribution systems where dependable high-current switching, selective electronic protection and robust switchboard integration are required.
