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1SDA057559R1 ABB E3H-A 1200 PR121/P-LI 1200 A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA057559R1 E3H-A 1200 PR121/P-LI is a 1200 A three-pole fixed SACE Emax air circuit breaker with a PR121/P-LI electronic overcurrent release providing LI protection for low-voltage AC power distribution systems.
£8,183.16
Why Choose the ABB E3H-A 1200 PR121/P-LI Air Circuit Breaker?
The ABB E3H-A 1200 PR121/P-LI, order code 1SDA057559R1, is a high-performance SACE Emax air circuit breaker designed for switching and protection in high-current low-voltage AC power distribution systems. This fixed configuration has a rated current of 1200 A, a three-pole arrangement and a PR121/P-LI electronic overcurrent release.
As part of the ABB SACE Emax E3H-A series, the 1SDA057559R1 combines robust switching capability with electronic protection against overload and short-circuit conditions. Its PR121/P-LI release provides long-time and instantaneous protection functions, delivering LI protection for demanding industrial, commercial and infrastructure electrical distribution applications.
The authoritative configuration identifies this model as a fixed (F) three-pole circuit breaker rated at 1200 A. The E3H-A frame provides a high-performance SACE Emax platform for installations requiring dependable circuit protection and permanent integration into compatible low-voltage switchboards.
Key Advantages
- High-performance 1200 A ABB SACE Emax air circuit breaker for low-voltage power distribution.
- PR121/P-LI electronic overcurrent release provides long-time and instantaneous protection.
- Three-pole configuration for three-phase AC electrical systems.
- Fixed (F) construction for permanent installation within compatible switchboards.
- Electronic protection helps safeguard feeders, busbars and connected equipment against overload and short-circuit conditions.
- E3H-A frame is designed for demanding industrial and commercial power distribution applications.
Key Features
- ABB SACE Emax E3H-A air circuit breaker.
- 1200 A rated current.
- Three-pole construction.
- PR121/P-LI electronic overcurrent release.
- Long-time (L) overload protection.
- Instantaneous (I) short-circuit protection.
- Fixed (F) circuit-breaker configuration.
- Designed for high-current low-voltage AC power distribution.
Reliable Circuit Protection for Power Distribution
Air circuit breakers such as the ABB SACE Emax E3H-A provide switching, isolation and overcurrent protection for high-current low-voltage electrical distribution systems. The electronic trip release monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, feeders and connected equipment against damaging electrical faults.
The PR121/P-LI release provides long-time protection against sustained overload conditions together with instantaneous protection against severe short-circuit currents. Combined with the fixed E3H-A construction and 1200 A rating, the 1SDA057559R1 is suited to permanent switchboard installations requiring dependable high-current 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.
- Three-phase distribution installations requiring electronic LI protection.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA057559R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame | E3H-A |
| Rated current | 1200 A |
| Number of poles | 3 |
| Trip unit | PR121/P-LI |
| Release type | Electronic |
| Protection functions | Long-time and instantaneous (LI) |
| Mounting configuration | Fixed (F) |
| Application | Low-voltage AC power distribution |
Frequently Asked Questions
What is the ABB 1SDA057559R1?
The ABB 1SDA057559R1 is an E3H-A SACE Emax three-pole fixed air circuit breaker rated at 1200 A and equipped with a PR121/P-LI electronic overcurrent release.
What is the rated current of the ABB E3H-A 1200 PR121/P-LI?
The E3H-A 1200 PR121/P-LI has a rated current of 1200 A for high-current low-voltage power distribution applications.
What protection functions does the PR121/P-LI release provide?
The PR121/P-LI electronic release provides long-time and instantaneous overcurrent protection functions, collectively identified as LI protection.
Is ABB 1SDA057559R1 a fixed or withdrawable circuit breaker?
The 1SDA057559R1 is a fixed (F) air circuit breaker designed for permanent installation within compatible low-voltage switchgear.
How many poles does the ABB 1SDA057559R1 have?
The 1SDA057559R1 has three poles, making it suitable for three-phase low-voltage AC power distribution systems.
Where is the ABB E3H-A 1200 PR121/P-LI typically used?
It is typically used in industrial and commercial switchboards, main distribution systems, high-current feeders and infrastructure installations requiring 1200 A fixed circuit protection with LI functionality.
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.
