1SDA100255R1 ABB XT4H 250 Ekip Dip LSIG 250 A 4-Pole Circuit Breaker

Why Choose the ABB 1SDA100255R1 XT4H 250 Ekip Dip LSIG Circuit Breaker?

The ABB 1SDA100255R1 is a high-performance SACE Tmax XT4H 250 moulded-case circuit breaker (MCCB) designed for comprehensive protection of low-voltage AC power distribution systems. This fixed, four-pole circuit breaker combines the compact XT4 platform with an Ekip Dip LSIG electronic trip unit rated at 250 A, providing protection against overloads, short circuits and earth faults.

As part of the ABB SACE Tmax XT series, the XT4H combines high short-circuit performance with microprocessor-based electronic protection for industrial, commercial and infrastructure applications. The Ekip Dip LSIG release provides long-time overload, short-time selective short-circuit, instantaneous short-circuit and earth-fault protection, supporting effective coordination of feeders, cables and connected electrical equipment.

The 1SDA100255R1 is supplied in a fixed, 4-pole configuration with front terminals. Its H performance class provides a rated short-circuit breaking capacity of 70 kA at 380–415 V AC, while the 250 A Ekip Dip LSIG release provides instantaneous protection adjustment from approximately 250–2,500 A, making it suitable for demanding distribution systems with high prospective fault currents.

Key Advantages

• High-performance ABB SACE Tmax XT4H 250 moulded-case circuit breaker for demanding low-voltage distribution.
• 250 A Ekip Dip LSIG electronic trip unit provides configurable microprocessor-based protection.
• LSIG protection functions cover overload, selective short circuit, instantaneous short circuit and earth fault.
• 4-pole fixed configuration supports four-pole AC distribution applications.
• Front terminals provide convenient connections for conventional switchboard installation.
• 70 kA breaking capacity at 380–415 V AC supports systems with high prospective fault levels.
• Electronic trip technology provides greater protection flexibility than conventional fixed thermal-magnetic releases.
• Compatible with the broad ABB SACE Tmax XT accessory and installation ecosystem.

Key Features

• ABB SACE Tmax XT4H 250 moulded-case circuit breaker.
• 250 A rated current.
• 250 A Ekip Dip LSIG solid-state electronic release.
• 4-pole configuration.
• Fixed mounting.
• Front terminals.
• Long-time overload protection (L).
• Short-time selective short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Earth-fault protection (G).
• Instantaneous protection adjustment approximately 250–2,500 A.
• H high-breaking-capacity performance level.
• 70 kA breaking capacity at 380–415 V AC.
• Microprocessor-based protection for AC distribution systems.

High-Performance LSIG Protection for Power Distribution

The ABB Ekip Dip LSIG electronic trip unit uses microprocessor technology to combine multiple protection functions within a single compact circuit breaker. Long-time protection responds to sustained overload conditions, short-time protection supports selective coordination, instantaneous protection rapidly responds to severe short circuits, and the earth-fault function adds protection against ground-fault currents.

The SACE Tmax XT4H platform is designed for installations where higher prospective short-circuit currents demand increased interruption performance. With its 250 A electronic release, four-pole construction, fixed mounting, front terminals and 70 kA breaking capacity at 380–415 V AC, the 1SDA100255R1 provides a robust solution for demanding low-voltage switchboards and power distribution assemblies.

Typical Applications

• Low-voltage power distribution switchboards.
• Industrial main and sub-distribution systems.
• Commercial building electrical distribution.
• Manufacturing and production facilities.
• Transformer and generator protection.
• Infrastructure and utility electrical systems.
• Four-pole switchgear and distribution assemblies.
• Circuits requiring high breaking capacity and electronic earth-fault protection.