1SDX255191R1 ABB EPX-XT5S-E2-2504 250A 4-Pole 50kA Electronic LSI MCCB

Why Choose the ABB EPX-XT5S-E2-2504 250A 4-Pole 50kA MCCB?

The ABB EPX-XT5S-E2-2504 is a high-performance 250 A, 4-pole moulded case circuit breaker (MCCB) designed to provide dependable overload and short-circuit protection in low-voltage electrical distribution systems. Featuring a 50 kA breaking capacity and an Ekip Dip electronic LSI trip unit, this circuit breaker delivers advanced protection for commercial buildings, industrial facilities and electrical infrastructure.

As part of the ABB Protecta Power Devices range, the EPX-XT5S-E2-2504 incorporates proven ABB SACE Tmax XT5S400 circuit breaker technology. Its electronic protection system combines long-time overload protection, short-time delayed short-circuit protection and instantaneous short-circuit protection, helping safeguard electrical cables, distribution equipment and connected installations against damaging electrical faults.

With a 250 A rated current, four-pole configuration and 50 kA short-circuit breaking capacity, the EPX-XT5S-E2-2504 is suitable for three-phase electrical distribution systems requiring coordinated switching of the phase conductors and neutral. Its 190 mm four-pole device width supports integration into ABB Protecta Power distribution boards, electrical switchboards and compatible low-voltage switchgear assemblies.

Key Advantages

• 250 A rated current supports commercial and industrial low-voltage electrical distribution applications.
• 50 kA breaking capacity provides high-level short-circuit protection at the applicable rated voltage.
• Four-pole construction enables coordinated switching of three phase conductors and the neutral conductor.
• Ekip Dip electronic LSI trip unit provides configurable overload and short-circuit protection.
• Long-time (L) protection helps prevent conductor overheating and equipment damage caused by sustained overloads.
• Short-time (S) protection enables delayed short-circuit tripping to support protective device coordination.
• Instantaneous (I) protection provides rapid disconnection during severe short-circuit conditions.
• Electronic trip technology supports flexible protection settings and selective coordination within appropriately designed electrical systems.
• ABB SACE Tmax XT5S400 technology combines advanced electronic protection with robust moulded case construction.
• 190 mm four-pole width supports integration into compatible electrical distribution assemblies.

Key Features

• ABB Protecta Power Devices electronic trip moulded case circuit breaker.
• SACE Tmax XT5S400 circuit breaker platform.
• 250 A rated current for low-voltage electrical distribution protection.
• 50 kA short-circuit breaking capacity at the applicable rated voltage.
• Four-pole configuration for three-phase electrical distribution systems with a neutral conductor.
• Ekip Dip LSI electronic trip unit providing long-time, short-time and instantaneous protection.
• L protection: Long-time overload protection for sustained overcurrent conditions.
• S protection: Short-time delayed short-circuit protection.
• I protection: Instantaneous short-circuit protection.
• Adjustable electronic protection characteristics support coordination with upstream and downstream protective devices.
• 400 A frame rating within the ABB Tmax XT5S family.
• 190 mm four-pole device width for compatible distribution assemblies.
• Four-pole switching arrangement supports applications requiring neutral conductor disconnection.
• Mechanical operating mechanism provides manual switching and automatic protective tripping.
• Robust moulded case construction designed for demanding commercial and industrial installations.
• Based on circuit breaker technology designed in accordance with IEC 60947-2.

Advanced Four-Pole Electronic LSI Circuit Protection

The ABB EPX-XT5S-E2-2504 uses an Ekip Dip electronic trip unit to monitor electrical current and initiate protective tripping when overload or short-circuit conditions occur. Its LSI protection functionality combines long-time overload protection with short-time delayed and instantaneous short-circuit protection. These functions allow protection characteristics to be configured for the electrical installation, helping minimise the effects of electrical faults and supporting continuity of supply where selective protection is achieved.

The ABB SACE Tmax XT5S400 platform combines electronic protection technology with a robust mechanical switching system. Its four-pole construction enables coordinated switching of three phase conductors and the neutral conductor, while the 250 A current rating and 50 kA breaking capacity make it suitable for appropriately designed commercial and industrial distribution installations. Compared with LS/I protection, the LSI configuration includes all three long-time, short-time and instantaneous protection functions, offering additional flexibility for electrical system coordination.

Typical Applications

• Commercial and industrial low-voltage distribution boards.
• ABB Protecta Power electrical distribution assemblies.
• Three-phase electrical distribution systems requiring neutral conductor switching.
• Industrial machinery and equipment supply circuits.
• Electrical switchboards and industrial control panels.
• Building services and infrastructure power distribution.
• Manufacturing facilities, warehouses and industrial electrical installations.
• Sub-distribution circuits requiring electronic LSI protection.
• Electrical distribution systems requiring coordinated long-time, short-time and instantaneous protection.