ABB SACE Emax 3 E2.3N 2500 ACB 3 Pole 2500A 66kA Ekip Aware LSIG Fixed Rear Terminals

Why Choose the ABB 1SDA128834R1 Emax 3 Air Circuit Breaker?

The ABB 1SDA128834R1 is an Emax 3 E2.3N 2500 air circuit breaker featuring a 2500 A rated current, 3-pole fixed configuration, rear horizontal terminals and an Ekip Aware LSIG electronic release for comprehensive low-voltage circuit protection.

Key Advantages

• High current capacity: Rated for continuous operation up to 2500 A in demanding low-voltage power distribution systems.
• Comprehensive LSIG protection: Provides long-time, short-time, instantaneous and earth-fault protection functions.
• High short-circuit performance: E2.3N technology provides a 66 kA ultimate short-circuit breaking capacity at 440 V and a 66 kA short-time withstand current for 1 s.
• Fixed installation: The 3-pole fixed construction provides a robust solution for switchboards and power distribution assemblies.
• Rear horizontal connections: HR terminal configuration supports practical integration into compatible switchboard layouts.
• Electronic protection: The Ekip Aware LSIG release provides adjustable protection and intelligent circuit monitoring capabilities.

Key Features

• Manufacturer: ABB
• Product family: SACE Emax 3
• Type: E2.3N 2500 Ekip Aware LSIG
• Order code: 1SDA128834R1
• Poles: 3
• Construction: Fixed
• Terminal configuration: Rear horizontal (HR)
• Release unit: Ekip Aware LSIG electronic release
• Rated current: 2500 A

Advanced LSIG Protection for Low-Voltage Power Distribution

The ABB E2.3N 2500 uses an Ekip Aware LSIG electronic release to provide adjustable protection against the principal overcurrent conditions encountered in low-voltage distribution systems. Long-time protection helps manage sustained overloads, short-time protection supports selective coordination, instantaneous protection responds rapidly to severe short-circuit conditions, and earth-fault protection helps detect faults involving the earth. With a 66 kA Icu and 66 kA Icw at 440 V, the 1SDA128834R1 is designed for high-capacity power distribution applications where reliable circuit protection and strong short-time withstand capability are required.

Typical Applications

• Main incomer and feeder protection in low-voltage switchboards.
• Industrial power distribution systems requiring 2500 A continuous current capacity.
• Commercial and infrastructure electrical distribution assemblies.
• Protection of high-capacity feeders and distribution circuits.
• Switchboard installations requiring fixed 3-pole air circuit breakers with rear horizontal terminals.
• Electrical systems requiring adjustable LSIG protection and high short-circuit withstand capability.

Frequently Asked Questions

ABB 1SDA128834R1 combines 2500 A current capacity, Ekip Aware LSIG electronic protection and 66 kA short-circuit performance in a robust 3-pole fixed Emax 3 air circuit breaker.

Trusted for Modern Power Distribution

Built within ABB's SACE Emax 3 platform, the 1SDA128834R1 provides high-capacity circuit protection for modern low-voltage distribution systems. Its 2500 A rating, adjustable Ekip Aware LSIG protection, fixed 3-pole construction and rear horizontal terminals make it suitable for demanding switchboard and industrial power distribution applications.