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1SDA057435R1 ABB E3S-A 1200 PR121/P-LSI 1200 A 3-Pole Air Circuit Breaker
ABB 1SDA057435R1 E3S-A 1200 PR121/P-LSI is a 1200 A three-pole fixed SACE Emax air circuit breaker with rear horizontal terminals and a PR121/P-LSI electronic overcurrent release for LSI protection.
£7,842.77
Why Choose the ABB E3S-A 1200 PR121/P-LSI Air Circuit Breaker?
The ABB E3S-A 1200 PR121/P-LSI, order code 1SDA057435R1, is a high-performance SACE Emax air circuit breaker designed for switching and protection in high-current low-voltage AC power distribution systems. This UL configuration has a rated current of 1200 A, a three-pole arrangement and an electronic PR121/P-LSI R1200 overcurrent release.
As part of the ABB SACE Emax E3S-A series, the 1SDA057435R1 combines robust switching performance with electronic protection against overload and short-circuit conditions. Its PR121/P-LSI release provides long-time, short-time and instantaneous protection functions, making the breaker suitable for demanding industrial, commercial and infrastructure power distribution applications.
This specific configuration is a three-pole fixed circuit breaker with rear horizontal terminals. It is fitted with four auxiliary contacts and open/closed circuit-breaker position indication, providing useful status signalling for integration into switchboards, control systems and low-voltage power distribution assemblies.
Key Advantages
- High-performance 1200 A SACE Emax air circuit breaker for low-voltage distribution systems.
- PR121/P-LSI electronic overcurrent release provides comprehensive LSI protection.
- Three-pole configuration for three-phase AC power distribution.
- Fixed mounting design provides robust permanent switchboard installation.
- Rear horizontal terminals facilitate integration with switchboard busbar systems.
- Four auxiliary contacts and open/closed indication support breaker status monitoring.
Key Features
- ABB SACE Emax E3S-A air circuit breaker.
- 1200 A rated current.
- Three-pole construction.
- PR121/P-LSI R1200 electronic overcurrent release.
- Long-time, short-time and instantaneous protection functions.
- Fixed circuit-breaker configuration.
- Rear horizontal terminals.
- Fitted with four auxiliary contacts.
- Integrated open/closed circuit-breaker position indication.
- UL configuration within the ABB SACE Emax range.
Reliable Circuit Protection for Power Distribution
Air circuit breakers such as the ABB SACE Emax E3S-A provide switching, isolation and overcurrent protection for high-current low-voltage distribution systems. The electronic trip release monitors electrical conditions and operates the breaker when configured protection thresholds are exceeded, helping protect cables, busbars and connected equipment against damaging overload and short-circuit currents.
The PR121/P-LSI release provides long-time, short-time and instantaneous protection functions. Combined with the fixed construction, rear horizontal terminals and auxiliary status contacts, the 1SDA057435R1 provides a practical solution for demanding industrial and commercial switchboards requiring dependable 1200 A circuit protection.
Typical Applications
- Industrial low-voltage power distribution systems.
- Main switchboards and distribution boards.
- Manufacturing plant electrical distribution.
- Commercial and infrastructure power systems.
- Protection of high-current feeders and busbar systems.
- Power distribution installations requiring electronic LSI protection.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA057435R1 |
| Product type | Air circuit breaker |
| Frame | E3S-A |
| Rated current | 1200 A |
| Number of poles | 3 |
| Trip unit | PR121/P-LSI R1200 |
| Release type | Electronic |
| Protection functions | Long-time, short-time and instantaneous (LSI) |
| Instantaneous release reference | 18,000 A |
| Mounting configuration | Fixed |
| Terminal arrangement | Rear horizontal |
| Auxiliary contacts | 4 |
| Position indication | Open / closed |
| Configuration | UL |
| Weight | 60 kg |
| EAN | 8015644596989 |
Frequently Asked Questions
What is the ABB 1SDA057435R1?
The ABB 1SDA057435R1 is an E3S-A SACE Emax three-pole fixed air circuit breaker rated at 1200 A and equipped with a PR121/P-LSI R1200 electronic overcurrent release.
What is the rated current of the ABB E3S-A 1200 PR121/P-LSI?
The circuit breaker has a rated current of 1200 A for high-current low-voltage power distribution applications.
What protection functions does the PR121/P-LSI release provide?
The PR121/P-LSI electronic release provides long-time, short-time and instantaneous overcurrent protection functions, collectively identified as LSI protection.
Is ABB 1SDA057435R1 a fixed or withdrawable circuit breaker?
The 1SDA057435R1 is a fixed three-pole circuit breaker equipped with rear horizontal terminals.
What terminal arrangement does the ABB 1SDA057435R1 use?
This E3S-A configuration uses rear horizontal terminals for connection within a compatible low-voltage switchboard or power distribution assembly.
Does the ABB 1SDA057435R1 include auxiliary contacts?
Yes. The breaker is fitted with four auxiliary contacts and includes open/closed circuit-breaker position indication.
Trusted by Power Distribution Professionals Worldwide
ABB SACE Emax air circuit breakers are engineered for demanding low-voltage power distribution applications, combining robust switching performance, electronic circuit protection and practical integration into industrial and commercial switchboards.
