1SDX255162R1 ABB EPX-XT5S-E1-2503 250A 3-Pole 50kA MCCB Ekip LS/I

Why Choose the ABB EPX-XT5S-E1-2503 250A 3-Pole MCCB?

The ABB EPX-XT5S-E1-2503 is a high-performance 250 A three-pole moulded case circuit breaker (MCCB) designed to provide reliable overload and short-circuit protection in low-voltage electrical distribution systems. Featuring a 50 kA short-circuit breaking capacity and an advanced Ekip LS/I electronic trip unit, this circuit breaker delivers dependable protection for commercial, industrial and infrastructure electrical installations.

As part of the ABB Protecta Power Devices range, the EPX-XT5S-E1-2503 incorporates ABB's established SACE Tmax XT5S circuit breaker technology. Its electronic protection system provides adjustable long-time overload protection and selectable short-time delayed or instantaneous short-circuit protection, enabling electrical engineers to coordinate protective devices and improve the reliability of electrical distribution networks.

With a rated current of 250 A, a three-pole configuration and a 50 kA breaking capacity at 415 V AC, the EPX-XT5S-E1-2503 is suitable for demanding three-phase power distribution applications. Its compact 140 mm-wide XT5S frame supports efficient integration into electrical distribution boards, switchgear assemblies and ABB Protecta Power systems. The product is identified by ABB order code 1SDX255162R1.

Key Advantages

• High-performance 250 A moulded case circuit breaker designed for industrial and commercial power distribution.
• Three-pole configuration suitable for protecting three-phase electrical circuits.
• 50 kA short-circuit breaking capacity at 415 V AC for demanding electrical protection requirements.
• Advanced Ekip LS/I electronic trip unit provides adjustable overload and short-circuit protection.
• Selectable short-time delayed or instantaneous protection supports coordination with other protective devices.
• Based on ABB's established SACE Tmax XT5S circuit breaker platform.
• 140 mm three-pole frame width enables efficient use of space within electrical distribution assemblies.
• Designed for integration into ABB Protecta Power distribution systems.
• Electronic trip technology offers flexible protection settings for different electrical installation requirements.
• Robust construction provides dependable circuit protection in demanding commercial and industrial environments.

Key Features

• ABB Protecta Power Devices product range.
• ABB SACE Tmax XT5S circuit breaker platform.
• 250 A rated current.
• Three-pole (3P) circuit breaker configuration.
• 50 kA ultimate short-circuit breaking capacity at 415 V AC.
• Ekip LS/I electronic protection release.
• Long-time overload protection (L) against sustained overcurrent conditions.
• Short-time delayed protection (S) for coordinated short-circuit protection.
• Instantaneous protection (I) for rapid short-circuit fault interruption.
• Selectable S or I protection characteristic within the LS/I trip unit.
• 50/60 Hz operating frequency for standard AC electrical distribution systems.
• 140 mm three-pole device width.
• Designed for installation within low-voltage distribution assemblies and switchboards.
• Suitable for ABB Protecta Power outgoing circuit protection applications.

Reliable Circuit Protection for Industrial Power Distribution

Moulded case circuit breakers such as the ABB EPX-XT5S-E1-2503 protect electrical circuits by automatically interrupting current when overloads or short-circuit faults occur. This helps minimise the risk of damage to electrical cables, switchgear and connected equipment while improving the operational reliability of low-voltage electrical distribution systems.

The integrated Ekip LS/I electronic trip unit provides adjustable long-time overload protection and selectable short-time delayed or instantaneous short-circuit protection. The long-time function responds to sustained overcurrent conditions, while the short-circuit protection functions enable the circuit breaker to respond to electrical faults according to the selected protection settings.

The LS/I protection arrangement allows engineers to select either short-time delayed protection or instantaneous protection to suit the electrical installation. Short-time delayed protection can help achieve discrimination between upstream and downstream circuit breakers, while instantaneous protection enables rapid interruption of high short-circuit currents. Unlike an LSI trip unit, the LS/I configuration provides a choice between S and I protection rather than both functions operating independently at the same time.

Built on the ABB SACE Tmax XT5S platform, this 250 A three-pole MCCB combines high breaking capacity with a compact design. It is particularly suitable for industrial distribution boards, commercial switchgear and ABB Protecta Power installations where dependable fault protection, adjustable electronic tripping and efficient panel integration are essential.

Typical Applications

• ABB Protecta Power electrical distribution assemblies.
• Industrial low-voltage switchboards and power distribution panels.
• Commercial building main and sub-distribution boards.
• Three-phase electrical feeder circuit protection.
• Manufacturing facilities and industrial production environments.
• Electrical infrastructure in warehouses and logistics centres.
• Commercial offices, retail premises and public buildings.
• Building services and electrical plant room installations.
• Industrial machinery supply circuits and electrical distribution networks.
• Low-voltage installations requiring electronic overload and short-circuit protection.