Why Choose the ABB 1SDA124788R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA124788R1 is a robust and reliable low-voltage air circuit breaker (ACB) designed for protection and switching in industrial and commercial electrical distribution systems. As part of the advanced ABB Emax 3 air circuit breaker series, it combines high-current switching capability with an electronic Ekip Aware LSI protection release for dependable electrical system protection.
This breaker features a compact E2.3N frame, an 800 A rated current and a three-pole fixed configuration with rear-mounted connections. The integrated Ekip Aware LSI release provides long-time, short-time and instantaneous overcurrent protection functions, allowing the breaker to be configured for demanding low-voltage distribution applications.
With a three-pole construction and an 800 A current rating, the 1SDA124788R1 is suited to main distribution boards, industrial switchboards, commercial electrical installations and high-current feeder applications. Its fixed format and rear connection arrangement support straightforward integration into suitably designed low-voltage switchgear assemblies.
Key Advantages
- Robust Emax 3 air circuit breaker designed for low-voltage distribution.
- 800 A rated current suitable for high-current electrical installations.
- Three-pole fixed configuration for straightforward switchboard installation.
- Integrated Ekip Aware LSI electronic protection release.
- Adjustable long-time, short-time and instantaneous protection functions.
- Rear-mounted connections support integration into electrical distribution assemblies.
Key Features
- ABB Emax 3 E2.3N series.
- 800 A rated current.
- Three-pole fixed version.
- Ekip Aware LSI electronic release.
- 66 kA Icu and Icw short-circuit ratings at 440 V.
- Adjustable long-time protection setting from 320–800 A.
- Adjustable instantaneous protection setting from 1200–12000 A.
- Rear-mounted horizontal connection arrangement.
Reliable Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB Emax 3 1SDA124788R1 provide dependable switching and protection for high-current low-voltage electrical distribution systems. The breaker is designed to interrupt fault currents and protect conductors and connected equipment against damaging overcurrent conditions.
The integrated Ekip Aware LSI electronic release combines long-time, short-time and instantaneous protection functions. Adjustable protection thresholds allow the breaker to be configured according to the requirements of the electrical installation and coordinated with other protective devices within the distribution network.
Typical Applications
- Industrial low-voltage distribution boards.
- Main and sub-distribution switchboards.
- Commercial building electrical systems.
- High-current feeder protection.
- Industrial electrical panels and switchgear.
- Infrastructure and power distribution installations.
