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1SDA057403R1 ABB E3N-A 2500 PR121/P-LSI 2500 A 3-Pole Air Circuit Breaker
ABB 1SDA057403R1 E3N-A 2500 PR121/P-LSI is a 2500 A three-pole fixed SACE Emax air circuit breaker with a PR121/P-LSI electronic overcurrent release for LSI protection in low-voltage AC power distribution systems.
£11,982.96
Why Choose the ABB E3N-A 2500 PR121/P-LSI Air Circuit Breaker?
The ABB E3N-A 2500 PR121/P-LSI, order code 1SDA057403R1, 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 2500 A, a three-pole arrangement and an electronic PR121/P-LSI R2500 overcurrent release.
As part of the ABB SACE Emax E3N-A series, the 1SDA057403R1 combines robust power switching 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 circuit-breaker open/closed position indication, while its 600 V rated voltage and UL 1066 construction make it suitable for applicable North American low-voltage switchboard installations.
Key Advantages
- High-current 2500 A SACE Emax air circuit breaker for demanding power distribution systems.
- PR121/P-LSI electronic overcurrent release provides long-time, short-time and instantaneous protection.
- Three-pole configuration for three-phase AC electrical systems.
- Fixed mounting design provides robust permanent switchboard installation.
- Rear horizontal terminals facilitate integration with switchboard busbar systems.
- Four auxiliary contacts and open/closed position indication support control and status monitoring.
Key Features
- ABB SACE Emax E3N-A air circuit breaker.
- 2500 A rated current.
- 600 V rated voltage.
- Three-pole construction.
- PR121/P-LSI R2500 electronic overcurrent release.
- Long-time, short-time and instantaneous protection functions.
- Fixed circuit-breaker version.
- Rear horizontal terminals.
- Four auxiliary contacts with breaker open/closed position indication.
- UL 1066 standard.
Reliable Circuit Protection for Power Distribution
Air circuit breakers such as the ABB SACE Emax E3N-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, while the fixed construction and rear horizontal terminals enable straightforward integration into suitable switchboards. With its 2500 A current rating and UL 1066 compliance, the 1SDA057403R1 is well suited to demanding industrial and commercial distribution assemblies.
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.
- UL 1066 switchgear requiring LSI electronic protection.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA057403R1 |
| EAN | 8015644596668 |
| Product type | Air circuit breaker |
| Frame | E3N-A |
| Rated current | 2500 A |
| Rated voltage | 600 V |
| Current type | AC |
| Number of poles | 3 |
| Trip unit | PR121/P-LSI R2500 |
| Release type | Electronic |
| Protection functions | Long-time, short-time and instantaneous (LSI) |
| Performance level | N |
| Mounting configuration | Fixed |
| Terminal arrangement | Rear horizontal |
| Auxiliary contacts | 4 |
| Standard | UL 1066 |
| Breaking capacity at 240 V AC | 65 kA |
| Breaking capacity at 480 V AC | 50 kA |
| Breaking capacity at 600 V AC | 50 kA |
| Mechanical durability | 15,000 cycles |
| Electrical durability | 8,000 cycles |
| Power loss | 205 W per pole at rated operating conditions |
| Dimensions (W × H × D) | 404 × 418 × 302 mm |
| Weight | 60 kg |
Frequently Asked Questions
What is the ABB 1SDA057403R1?
The ABB 1SDA057403R1 is an E3N-A SACE Emax three-pole fixed air circuit breaker rated at 2500 A and equipped with a PR121/P-LSI R2500 electronic overcurrent release.
What is the rated current of the ABB E3N-A 2500 PR121/P-LSI?
The breaker has a rated current of 2500 A and is designed for high-current low-voltage AC power distribution.
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.
Is ABB 1SDA057403R1 a fixed or withdrawable circuit breaker?
The 1SDA057403R1 is a fixed circuit-breaker configuration equipped with rear horizontal terminals.
What is the breaking capacity of the ABB 1SDA057403R1?
The breaker has a UL 1066 breaking capacity of 65 kA at 240 V AC and 50 kA at 480 V AC and 600 V AC.
How many poles does the ABB 1SDA057403R1 have?
The 1SDA057403R1 has three poles for use in three-phase AC power distribution systems.
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.
