1SDX254842R1 ABB EPX-XT4N-E2-1004 100A 4-Pole 36kA MCCB Ekip LSI

Why Choose the ABB EPX-XT4N-E2-1004 100A 4-Pole Electronic MCCB?

The ABB EPX-XT4N-E2-1004 is a high-performance 100 A four-pole moulded case circuit breaker (MCCB) designed to provide dependable overload and short-circuit protection in commercial and industrial low-voltage electrical distribution systems. Part of the ABB Protecta Power Devices range, this circuit breaker combines a 36 kA short-circuit breaking capacity with advanced Ekip LSI electronic protection, making it an excellent choice for installations requiring adjustable protective characteristics and coordinated four-pole switching.

Based on the established ABB SACE Tmax XT4N platform, the EPX-XT4N-E2-1004 incorporates an electronic trip unit with three important protection functions: long-time overload protection (L), short-time delayed short-circuit protection (S) and instantaneous short-circuit protection (I). These functions allow electrical designers to configure the circuit breaker according to conductor ratings, connected loads, prospective fault currents and protection coordination requirements.

With its 100 A rated current, four-pole configuration and 140 mm device width, this MCCB provides a practical solution for three-phase distribution circuits where coordinated switching of the neutral conductor is required. The ABB EPX-XT4N-E2-1004 is designed for integration into compatible ABB Protecta Power distribution assemblies and is identified by ABB order code 1SDX254842R1.

Key Advantages

• 100 A rated current for commercial and industrial low-voltage electrical distribution.
• Four-pole (4P) configuration for coordinated switching of three phase conductors and a neutral conductor.
• 36 kA short-circuit breaking capacity for appropriately designed installations with substantial prospective fault currents.
• ABB Ekip LSI electronic trip unit provides configurable overload and short-circuit protection.
• Long-time (L) protection helps safeguard conductors and connected equipment against sustained overload conditions.
• Short-time delayed (S) protection supports selective coordination with downstream protective devices.
• Instantaneous (I) protection provides rapid interruption during high-current short-circuit faults.
• LSI protection functionality includes long-time, short-time and instantaneous protection characteristics within one electronic trip unit.
• Adjustable electronic protection settings provide flexibility for different distribution circuit requirements.
• Four-pole construction supports electrical systems where neutral switching is required by the installation design.
• 140 mm four-pole width supports efficient installation within compatible distribution assemblies.
• ABB SACE Tmax XT4N construction combines robust mechanical design with advanced electronic protection.
• Part of the ABB Protecta Power Devices range for professional electrical distribution applications.

Key Features

• ABB Protecta Power Devices product group.
• EPX-XT4N-E2-1004 product designation.
• 100 A rated current for low-voltage circuit protection.
• Four-pole (4P) construction for three-phase and neutral distribution circuits.
• 36 kA short-circuit breaking capacity in the specified Protecta Power configuration.
• ABB Ekip LSI electronic trip unit for adjustable circuit protection.
• L function: Long-time overload protection.
• S function: Short-time delayed short-circuit protection.
• I function: Instantaneous short-circuit protection.
• LSI protection arrangement: All three protection characteristics are included.
• Electronic current sensing for controlled protective operation.
• Configurable protection thresholds and operating characteristics to support circuit protection coordination.
• ABB SACE Tmax XT4N platform with N short-circuit performance classification.
• XT4 frame family incorporating a 100 A electronic protection configuration.
• 140 mm four-pole device width for integration into compatible electrical distribution equipment.
• Manual switching mechanism with automatic electronic protective tripping.
• Robust moulded case construction for commercial and industrial electrical environments.
• Designed for compatible ABB Protecta Power panelboards and distribution assemblies.

Advanced Four-Pole LSI Electronic Protection for Electrical Distribution

The ABB EPX-XT4N-E2-1004 provides dependable circuit protection for low-voltage electrical distribution systems where configurable protective operation and coordinated four-pole switching are required. Its electronic trip unit monitors current conditions and initiates automatic interruption when the configured protective thresholds are exceeded. This helps protect conductors, connected equipment and electrical distribution infrastructure against overloads and short-circuit faults.

The long-time (L) protection function responds to sustained overload conditions. Adjustable long-time protection characteristics allow the circuit breaker to be configured according to the current-carrying capacity of conductors and the requirements of connected loads. Correctly selected settings help reduce the risk of excessive cable heating while allowing normal electrical equipment operation within the circuit's design limits.

The short-time delayed (S) protection function provides additional flexibility for electrical protection coordination. In an appropriately designed distribution system, a controlled short-time delay can allow a downstream protective device to clear a fault before an upstream breaker operates. This can help minimise unnecessary interruption to unaffected circuits. Actual selectivity must be confirmed using the relevant ABB time-current curves and coordination data.

The instantaneous (I) protection function provides rapid circuit interruption when short-circuit current exceeds the configured threshold. This helps limit the duration of high-current electrical faults. The LSI arrangement includes long-time, short-time delayed and instantaneous protection functions together, offering greater configuration flexibility than an LS/I arrangement in which short-time and instantaneous protection are alternative operating modes.

The four-pole configuration makes the EPX-XT4N-E2-1004 particularly suitable for three-phase distribution circuits where the neutral conductor must be switched alongside the phase conductors. Four-pole switching may be required for specific electrical distribution arrangements, maintenance strategies and installation designs. The suitability of neutral switching and the applicable neutral protection characteristics must be assessed in accordance with the earthing system, installation requirements and ABB technical documentation.

The ABB SACE Tmax XT4N platform provides a robust foundation for electronic circuit protection. The EPX-XT4N-E2-1004 combines a 100 A rated current with a 36 kA short-circuit breaking capacity, making it suitable for appropriately designed commercial and industrial distribution circuits. Its 140 mm four-pole width supports integration into compatible electrical distribution assemblies.

As part of the ABB Protecta Power range, this MCCB is intended for installation in compatible panelboards and distribution equipment using the appropriate mounting and connection components. Electrical designers and installers should verify the prospective fault current, operating voltage, conductor ratings, protection settings, neutral requirements and protection coordination before commissioning. Correct configuration of the electronic trip unit is essential to achieving the intended protective performance.

Typical Applications

• Commercial and industrial low-voltage electrical distribution systems.
• ABB Protecta Power panelboards and compatible distribution assemblies.
• Three-phase outgoing circuits requiring four-pole switching.
• Industrial switchboards and sub-distribution panels.
• Manufacturing and production facilities.
• Commercial offices and business premises.
• Retail buildings and hospitality facilities.
• Warehouses and logistics centres.
• Building services and mechanical plant electrical distribution.
• Distribution circuits requiring adjustable electronic overload protection.
• Installations requiring coordinated short-time and instantaneous short-circuit protection.
• Three-phase and neutral distribution circuits requiring appropriately designed four-pole switching.
• Electrical infrastructure upgrades, maintenance and replacement projects.