1SDA071421R1 ABB Emax 2 E1.2C 1000A Ekip Dip LI 4P Air Circuit Breaker

Why Choose the ABB 1SDA071421R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA071421R1 is a compact and reliable SACE Emax 2 E1.2C air circuit breaker (ACB) designed for protection and control of low-voltage electrical distribution systems. Rated at 1000 A, this fixed four-pole circuit breaker combines ABB’s E1.2 frame with the Ekip Dip LI solid-state electronic trip unit for dependable overload and instantaneous short-circuit protection.

As part of the ABB SACE Emax 2 series, the E1.2C is engineered for efficient integration into industrial, commercial and infrastructure switchboards. The Ekip Dip LI release provides adjustable long-time overload and instantaneous short-circuit protection, with settings configured using DIP switches for straightforward commissioning and operation.

With a rated uninterrupted current of 1000 A, rated operational voltage of 690 V AC and rated ultimate short-circuit breaking capacity of 50 kA at 380–440 V AC, the 1SDA071421R1 provides robust protection for demanding low-voltage installations. This version features a fixed four-pole configuration with front terminals, providing straightforward integration into electrical switchboards and distribution assemblies.

Key Advantages

• Compact 1000 A air circuit breaker for low-voltage power distribution.
• 50 kA ultimate short-circuit breaking capacity at 380–440 V AC.
• Ekip Dip LI electronic trip unit provides adjustable overload and instantaneous short-circuit protection.
• DIP-switch adjustment provides straightforward protection configuration without a touchscreen interface.
• Four-pole configuration provides switching of three phases together with the neutral pole.
• Fixed installation with front terminals supports efficient integration into low-voltage switchboards.

Key Features

• ABB SACE Emax 2 E1.2C air circuit breaker.
• 1000 A rated uninterrupted current.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50 kA Icu at 380–440 V AC.
• 42 kA Icu at 500–690 V AC.
• Ekip Dip LI solid-state electronic release.
• Adjustable long-time overload protection from 400–1000 A.
• Adjustable instantaneous short-circuit protection from 1500–15,000 A.
• Protection settings configured using DIP switches.
• Fixed four-pole construction with 100% neutral pole current rating.
• Front terminals for main circuit connections.
• Four auxiliary change-over contacts and open/closed circuit-breaker position indication.
• Optional motor operating mechanism for remote operation.
• Designed in accordance with IEC 60947-2.

Reliable Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 E1.2C protect important low-voltage distribution circuits against damaging overload and short-circuit conditions. The 1SDA071421R1 combines a 1000 A continuous-current rating with substantial short-circuit interruption capability, making it suitable for main incomers, distribution feeders and other important circuits within industrial and commercial switchboards.

The Ekip Dip LI electronic trip unit provides adjustable long-time overload and instantaneous short-circuit protection in a straightforward format. Protection thresholds are configured using DIP switches, making this breaker particularly suitable for installations requiring dependable electronic protection without the additional functionality of touchscreen, short-time or integrated ground-fault protection.

Typical Applications

• Main incoming protection for low-voltage switchboards.
• Industrial electrical distribution systems.
• Commercial building power distribution.
• Transformer secondary and distribution protection.
• Manufacturing and process facilities.
• Distribution feeders and sub-main circuits.
• Infrastructure electrical systems.
• IEC low-voltage switchgear and controlgear assemblies.