1SDA072551R1 ABB E4.2S 4000 Ekip Dip LI 3p WMP Air Circuit Breaker

Why Choose the ABB E4.2S 4000 Ekip Dip LI 3p WMP Air Circuit Breaker?

The ABB E4.2S 4000 Ekip Dip LI 3p WMP, order code 1SDA072551R1, is a high-current SACE Emax 2 air circuit breaker (ACB) designed for protection and control in demanding low-voltage power distribution systems. This three-pole breaker combines a rated current of 4000 A with an Ekip Dip LI electronic trip unit for dependable overload and instantaneous short-circuit protection.

The E4.2S platform is designed for industrial, commercial and infrastructure installations requiring substantial current-carrying capability and reliable fault interruption. Its Ekip Dip LI electronic release provides adjustable long-time overload and instantaneous short-circuit protection, with settings configured using DIP switches for straightforward commissioning.

With a rated operational voltage of 690 V AC, an ultimate short-circuit breaking capacity of 85 kA at 400–440 V AC and a rated short-time withstand current of 66 kA for 1 s, the 1SDA072551R1 is suited to substantial low-voltage distribution applications. Its three-pole withdrawable moving-part configuration supports efficient inspection, servicing and maintenance within compatible ABB SACE Emax 2 switchgear.

Key Advantages

• High-current ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 4000 A rated current for major industrial and commercial electrical installations.
• 85 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• 66 kA short-time withstand current for 1 s supports robust system protection.
• Ekip Dip LI electronic trip unit provides adjustable overload and instantaneous short-circuit protection.
• Three-pole withdrawable design supports convenient switchboard inspection, servicing and maintenance.

Key Features

• ABB SACE Emax 2 E4.2S series.
• 4000 A rated current.
• Three-pole configuration.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 85 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• 66 kA ultimate short-circuit breaking capacity at 500–690 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Ekip Dip LI electronic protection release.
• Long-time overload protection adjustable from 0.4–1 × In.
• Instantaneous short-circuit protection adjustable from 1.5–15 × In.
• DIP-switch-based protection setting for straightforward configuration.

Reliable LI Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 protect high-current low-voltage electrical systems against potentially damaging overload and short-circuit conditions. The E4.2S platform combines a substantial 4000 A current rating with strong fault interruption capability, making it suitable for main distribution boards, industrial switchboards and other high-capacity electrical installations.

The Ekip Dip LI electronic release provides adjustable long-time overload protection and instantaneous short-circuit protection. Combined with the E4.2S breaker's 85 kA breaking capacity at 400–440 V AC and withdrawable construction, this provides a robust solution for installations where dependable circuit protection and straightforward maintenance are required.

Typical Applications

• Main low-voltage electrical distribution boards.
• High-current industrial switchboards.
• Transformer secondary and distribution protection.
• Manufacturing and process plant electrical systems.
• Commercial and infrastructure power distribution.
• High-current installations requiring adjustable LI electronic protection.