Why Choose the ABB SACE Emax 3 E1.3B 1250 Air Circuit Breaker?
The ABB SACE Emax 3 E1.3B 1250 air circuit breaker, part number 1SDA128866R1, is a high-capacity low-voltage circuit protection solution designed for reliable protection and control of electrical distribution systems. This 4-pole fixed circuit breaker is rated at 1250 A and provides an ultimate short-circuit breaking capacity of 42 kA at 415 V.
Equipped with an Ekip Aware LSIG trip unit, the E1.3B 1250 provides comprehensive electronic protection functions for demanding power distribution applications. The LSIG configuration supports protection against overload, short circuit, instantaneous faults and earth faults.
With a fixed installation design and front terminals, the ABB SACE Emax 3 E1.3B 1250 is suited to switchboards and low-voltage distribution assemblies where dependable protection, straightforward installation and robust circuit interruption are required.
Key Advantages
- High current rating: Supports continuous current applications up to 1250 A.
- Reliable short-circuit protection: Provides an Icu of 42 kA at 415 V.
- Four-pole configuration: Provides switching and protection across three phases and neutral.
- Advanced electronic protection: Ekip Aware LSIG trip unit provides comprehensive circuit protection functions.
- Fixed installation: Designed for permanent installation within compatible low-voltage switchboards.
- Front terminals: Provides a practical connection arrangement for compatible switchboard configurations.
- SACE Emax 3 platform: Part of ABB's Emax 3 range of low-voltage air circuit breakers.
Key Features
- Manufacturer: ABB
- Product range: SACE Emax 3
- Model: E1.3B 1250
- Product type: Air circuit breaker
- Part number: 1SDA128866R1
- Number of poles: 4
- Rated current: 1250 A
- Ultimate short-circuit breaking capacity: 42 kA at 415 V
- Trip unit: Ekip Aware LSIG
- Installation version: Fixed
- Terminal configuration: Front terminals
Reliable Protection for Low-Voltage Power Distribution
The ABB SACE Emax 3 E1.3B 1250 combines a 1250 A rated current with an Ekip Aware LSIG trip unit to provide dependable protection for low-voltage electrical distribution systems. Its four-pole arrangement enables comprehensive switching and protection of circuits including the neutral conductor.
The 42 kA ultimate short-circuit breaking capacity at 415 V makes this air circuit breaker suitable for distribution applications requiring dependable interruption of high fault currents. Its fixed construction and front-terminal arrangement support integration into compatible switchboard assemblies.
As part of the ABB SACE Emax 3 range, the E1.3B 1250 is designed for demanding commercial, industrial and infrastructure power distribution environments where robust circuit protection and reliable electrical operation are essential.
Typical Applications
- Low-voltage main distribution boards
- Industrial electrical distribution systems
- Commercial power distribution installations
- Switchboard and switchgear assemblies
- Power-intensive industrial equipment supplies
- Infrastructure and building electrical distribution
- Protection of high-current feeders and distribution circuits
