Why Choose the ABB 1SDA128824R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA128824R1 is an Emax 3 low-voltage air circuit breaker featuring an E2.3S 1250 frame, 1250 A rated current, 3-pole fixed construction, Ekip Aware LSIG electronic protection and rear horizontal terminals. It is designed for dependable switching and comprehensive protection in demanding low-voltage power distribution systems.
Key Advantages
- High current capacity: Supports a rated current of 1250 A for substantial low-voltage distribution loads.
- Comprehensive LSIG protection: Provides long-time, short-time, instantaneous and earth-fault protection functions.
- Reliable Emax 3 platform: Part of ABB's SACE Emax 3 family of air circuit breakers for low-voltage power distribution.
- Fixed 3-pole construction: Provides a straightforward installation format for three-phase distribution systems.
- Rear horizontal terminals: The HR configuration provides rear-mounted horizontal connections suitable for compatible switchboards and distribution assemblies.
- High short-circuit capability: Provides an Icu of 85 kA at 440 V and an Icw of 66 kA for 1 s.
Key Features
- Manufacturer: ABB
- Product family: SACE Emax 3 air circuit breakers
- Model: E2.3S 1250 Ekip Aware LSIG 3p F HR
- Rated current (Iu): 1250 A
- Number of poles: 3
- Installation: Fixed
- Release unit: Ekip Aware electronic release
- Protection functions: LSIG
- Terminal configuration: Rear horizontal (HR)
- Ultimate short-circuit breaking capacity (Icu): 85 kA at 440 V
- Short-time withstand current (Icw): 66 kA for 1 s
- EAN: 8056221304535
Advanced LSIG Protection for Low-Voltage Power Distribution
The Ekip Aware LSIG release combines four fundamental protection functions in one electronic trip unit. Long-time protection helps protect conductors and equipment against sustained overloads, while short-time and instantaneous protection provide rapid response to high-current fault conditions. Earth-fault protection adds dedicated protection against ground-fault currents. This makes the ABB 1SDA128824R1 suitable for applications where coordinated and comprehensive circuit protection is required.
Typical Applications
- Low-voltage main distribution boards
- Industrial electrical distribution systems
- Commercial building power distribution
- Manufacturing plants and production facilities
- Power distribution assemblies and switchboards
- Large electrical loads requiring 1250 A switching and protection
- Infrastructure and energy distribution installations
Frequently Asked Questions
What is ABB 1SDA128824R1?
ABB 1SDA128824R1 is an Emax 3 E2.3S 1250 low-voltage air circuit breaker with an Ekip Aware LSIG electronic release, 3-pole fixed construction and rear horizontal terminals.
What is the rated current of the ABB 1SDA128824R1?
The ABB 1SDA128824R1 has a rated uninterrupted current of 1250 A.
What protection functions does the Ekip Aware LSIG provide?
The Ekip Aware LSIG release provides long-time, short-time, instantaneous and earth-fault protection functions, designated L, S, I and G.
What is the short-circuit breaking capacity of the 1SDA128824R1?
The E2.3S 1250 version has an ultimate short-circuit breaking capacity of 85 kA at 440 V and a short-time withstand current of 66 kA for 1 s.
What type of terminals does the ABB 1SDA128824R1 use?
The 1SDA128824R1 is supplied in the HR configuration with rear horizontal terminals.
The ABB 1SDA128824R1 E2.3S 1250 Ekip Aware LSIG 3p F HR combines 1250 A switching capacity, comprehensive LSIG electronic protection and a fixed three-pole configuration for dependable low-voltage power distribution.
Trusted for Modern Power Distribution
As part of the ABB SACE Emax 3 range, the 1SDA128824R1 is engineered for demanding low-voltage power distribution applications where reliable switching, fault protection and robust system integration are essential. Its Ekip Aware LSIG release and rear horizontal terminal configuration provide a practical solution for compatible industrial and commercial switchboard installations.
