1SDX248646R1 ABB EPX-XT5S-TM6304 630A 4P 50kA TMA Moulded Case Circuit Breaker

Why Choose the ABB EPX-XT5S-TM6304 630A 4-Pole Moulded Case Circuit Breaker?

The ABB EPX-XT5S-TM6304 is a robust, high-performance 630 A four-pole moulded case circuit breaker (MCCB) designed to provide reliable overload and short-circuit protection in commercial and industrial low-voltage electrical distribution systems. Based on the advanced ABB SACE Tmax XT5S circuit breaker platform, this device combines high-current circuit protection with the proven performance and reliability of ABB's moulded case circuit breaker technology.

As part of the ABB Protecta Power Devices product group, the EPX-XT5S-TM6304 is specifically configured for integration into compatible Protecta Power distribution assemblies. Its thermal-magnetic adjustable (TMA) trip unit provides dependable protection against sustained overload conditions and short-circuit faults, helping protect electrical cables, connected equipment and distribution infrastructure. The four-pole construction enables coordinated switching of three phase conductors and a neutral conductor in suitable electrical installations.

With a rated current of 630 A, a specified 50 kA short-circuit breaking capacity and a four-pole (4P) configuration, the EPX-XT5S-TM6304 is designed for demanding power distribution applications requiring substantial current-carrying capability. Its ABB XT5S630 platform and TMA protection technology make it a practical solution for electrical contractors, switchboard manufacturers, panel builders and industrial facilities engineers.

Key Advantages

• High-capacity 630 A moulded case circuit breaker for demanding low-voltage power distribution applications.
• 50 kA short-circuit breaking capacity in the specified ABB Protecta Power configuration.
• Four-pole (4P) construction for three-phase and neutral circuit switching.
• Thermal-magnetic adjustable (TMA) trip unit providing overload and short-circuit protection.
• Based on the established ABB SACE Tmax XT5S630 platform.
• Designed for integration into ABB Protecta Power distribution boards.
• Adjustable protection characteristics support coordination with electrical cables and connected equipment.
• Robust moulded case construction provides reliable protection in commercial and industrial electrical environments.

Key Features

• ABB Protecta Power Devices product group.
• EPX-XT5S-TM6304 product designation.
• ABB order code 1SDX248646R1.
• ABB SACE Tmax XT5S630 circuit breaker platform.
• 630 A rated current for high-capacity electrical distribution circuits.
• 630 A frame rating within the XT5S platform.
• 50 kA breaking capacity in the specified Protecta Power application.
• Four-pole (4P) configuration for three-phase distribution systems with a neutral conductor.
• Thermal-magnetic adjustable (TMA) protection against overload and short-circuit faults.
• Thermal overload protection for sustained overcurrent conditions.
• Magnetic short-circuit protection for rapid fault interruption.
• 190 mm nominal device width for the ABB XT5S four-pole configuration.
• Suitable for integration into compatible ABB Protecta Power distribution assemblies.
• Supports reliable operation of commercial and industrial electrical distribution networks.

Reliable High-Current Protection for Industrial Power Distribution

Moulded case circuit breakers such as the ABB EPX-XT5S-TM6304 protect electrical distribution systems by interrupting current when an overload or short-circuit fault occurs. The thermal protection element responds to sustained excessive current, while the magnetic protection element operates rapidly during short-circuit conditions. This combined protection helps reduce the risk of cable damage, electrical equipment failure and disruption to critical power distribution infrastructure.

The ABB SACE Tmax XT5S platform is designed for high-performance low-voltage circuit protection. Its four-pole configuration makes the EPX-XT5S-TM6304 suitable for electrical distribution arrangements requiring coordinated switching of three phase conductors and a neutral conductor. The thermal-magnetic adjustable trip unit supports appropriate protection settings for the connected electrical installation, helping engineers coordinate protective devices throughout the distribution network.

With its 630 A current rating and 50 kA specified breaking capacity, the EPX-XT5S-TM6304 is particularly suited to high-capacity outgoing feeders and distribution circuits in compatible ABB Protecta Power assemblies. For XT5 outgoing devices, ABB recommends considering a side cableway extension box where larger cables require additional installation space. Final breaker selection, protection settings, neutral configuration and short-circuit performance must be assessed against the complete electrical installation design.

Typical Applications

• ABB Protecta Power low-voltage electrical distribution boards.
• High-capacity outgoing feeder protection in commercial buildings.
• Industrial power distribution systems and manufacturing facilities.
• Three-phase and neutral electrical distribution circuits.
• Commercial building main and sub-distribution installations.
• Electrical distribution for warehouses, logistics centres and industrial premises.
• Building services infrastructure and mechanical plant distribution systems.
• Electrical switchboard manufacturing and power distribution panel assembly.