1SDA073640R1 ABB E2.2S 250 Ekip Dip LSIG 4p FHR Air Circuit Breaker

Why Choose the ABB E2.2S 250 Ekip Dip LSIG 4p FHR Air Circuit Breaker?

The ABB E2.2S 250 Ekip Dip LSIG 4p FHR, order code 1SDA073640R1, is a 250 A four-pole fixed air circuit breaker from the ABB SACE Emax 2 range. Combining the E2.2 frame with S-level breaking performance and an Ekip Dip LSIG electronic trip unit, it provides comprehensive protection and switching for low-voltage industrial, commercial and infrastructure power distribution systems.

The E2.2S platform provides a rated ultimate short-circuit breaking capacity of 85 kA at 380–440 V AC and 66 kA at 500–690 V AC, together with a rated short-time withstand current of 66 kA for 1 s. These characteristics make the breaker suitable for distribution systems requiring strong fault-clearing capability and selective coordination.

The integrated Ekip Dip LSIG trip unit provides long-time overload, short-time selective short-circuit, instantaneous short-circuit and earth-fault protection. Settings are configured through DIP switches, providing a practical means of adapting the breaker protection to the requirements of the electrical installation.

Key Advantages

• 250 A rated current for low-voltage power distribution and feeder protection.
• Four-pole construction provides switching and protection across a four-pole circuit.
• 85 kA ultimate breaking capacity at 380–440 V AC for demanding fault levels.
• 66 kA breaking capacity at 500–690 V AC extends protection across higher-voltage networks.
• 66 kA 1-second short-time withstand current supports selective system coordination.
• Ekip Dip LSIG electronic trip unit combines overload, selective short-circuit, instantaneous and earth-fault protection.
• DIP-switch adjustment provides straightforward protection configuration.
• Fixed installation with rear horizontal terminals supports clean switchboard integration.

Key Features

• ABB SACE Emax 2 E2.2S air circuit breaker.
• 250 A rated current.
• Four-pole configuration.
• Ekip Dip LSIG electronic protection trip unit.
• Long-time (L) overload protection.
• Short-time (S) selective short-circuit protection.
• Instantaneous (I) short-circuit protection.
• Ground-fault (G) protection.
• 85 kA Icu at 380/400/415/440 V AC.
• 66 kA Icu at 500/525/690 V AC.
• 66 kA rated short-time withstand current (Icw) for 1 s.
• 690 V AC rated operational voltage (Ue).
• 1000 V AC rated insulation voltage (Ui).
• 50/60 Hz rated frequency.
• Fixed installation.
• Rear horizontal terminals (FHR).

Reliable LSIG Protection for Low-Voltage Distribution

The Ekip Dip LSIG trip unit gives the ABB 1SDA073640R1 four complementary protection functions. Long-time protection responds to sustained overload conditions, short-time protection enables selective response to short-circuit currents, instantaneous protection provides rapid intervention for severe faults, and ground-fault protection detects earth-fault conditions. This combination supports comprehensive protection of low-voltage distribution circuits.

The E2.2S frame complements this protection functionality with substantial fault-interruption performance, including 85 kA Icu at 400/415 V AC and a 66 kA 1-second short-time withstand rating. Its fixed construction and rear horizontal terminals make it particularly suitable for permanent integration into main distribution boards and industrial switchgear assemblies.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Feeder and distribution circuit protection.
• Transformer secondary protection.
• Manufacturing and process plant switchgear.
• Infrastructure and utility distribution assemblies.
• Systems requiring LSIG protection and selective fault coordination.