Why Choose the ABB 1SDA125643R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA125643R1 is a high-performance four-pole withdrawable air circuit-breaker from the ABB SACE Emax 3 platform, configured as an E1.3N 1600 Ekip Aware LI moving part for reliable protection and energy distribution in industrial and commercial electrical systems.
Designed for demanding low-voltage power distribution applications, the Emax 3 E1.3N platform combines high current-carrying capability with electronic protection and a withdrawable construction. The Ekip Aware LI protection unit provides long-time and instantaneous protection functions for dependable circuit protection and operational continuity.
With a rated permanent current of 1600 A, a rated voltage of 690 V AC and a four-pole configuration, the ABB 1SDA125643R1 is suitable for main distribution boards, industrial switchboards and other installations requiring high-capacity circuit protection. Its withdrawable moving-part design facilitates inspection, maintenance and replacement within compatible Emax 3 assemblies.
Key Advantages
- High-capacity ABB SACE Emax 3 air circuit-breaker moving part for low-voltage power distribution.
- 1600 A rated permanent current for high-load electrical distribution applications.
- Four-pole withdrawable construction for flexible installation and maintenance.
- Ekip Aware LI electronic protection with long-time and instantaneous protection functions.
- 66 kA Icu at 400 V AC short-circuit breaking capacity.
- Suitable for main distribution, industrial switchboards and high-current electrical installations.
Key Features
- ABB SACE Emax 3 E1.3N series.
- E1.3N 1600 Ekip Aware LI 4p WMP configuration.
- 1600 A rated permanent current.
- 690 V AC rated voltage.
- 66 kA rated short-circuit breaking capacity at 400 V AC.
- 640–1600 A long-time overload release adjustment range.
- 2400–24000 A instantaneous short-circuit release adjustment range.
- Withdrawable moving-part construction with four change-over auxiliary contacts.
Reliable Protection for High-Current Power Distribution
Air circuit-breakers are used in low-voltage electrical distribution systems to protect high-current circuits against overloads and short-circuit conditions. The ABB Emax 3 E1.3N platform is designed for applications where dependable switching, protection and maintainability are essential.
The Ekip Aware LI configuration combines long-time overload protection with instantaneous short-circuit protection, while the withdrawable construction allows the breaker moving part to be positioned within a compatible fixed installation for convenient operation and maintenance. Four auxiliary change-over contacts provide additional status and control signalling for associated electrical systems.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial electrical distribution systems.
- Commercial and infrastructure power distribution.
- High-current feeder and incomer protection.
- Manufacturing plants and industrial facilities.
- Electrical installations requiring withdrawable circuit-breaker technology.
