1SDX255127R1 ABB EPX-XT4S-TM0634 63A 4-Pole 50kA TMA Moulded Case Circuit Breaker

Why Choose the ABB EPX-XT4S-TM0634 63A 4-Pole 50kA MCCB?

The ABB EPX-XT4S-TM0634 is a 63 A four-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 short-circuit breaking capacity and an adjustable TMA thermal-magnetic trip unit, this circuit breaker is suitable for commercial, industrial and infrastructure electrical installations requiring reliable circuit protection.

Part of the ABB Protecta Power Devices range, the EPX-XT4S-TM0634 belongs to the ABB SACE Tmax XT4S circuit breaker family. Its thermal-magnetic protection release combines thermal overload protection with magnetic short-circuit protection, helping safeguard electrical conductors, connected equipment and distribution circuits against abnormal current conditions.

With its 63 A rated current, four-pole configuration and 50 kA breaking capacity, the EPX-XT4S-TM0634 provides a practical solution for three-phase electrical distribution systems requiring four-pole switching. Its combination of established ABB circuit breaker technology and adjustable thermal-magnetic protection makes it suitable for electrical contractors, panel builders and maintenance engineers working with compatible ABB Protecta Power distribution assemblies.

Key Advantages

• 63 A rated current: Suitable for appropriately designed commercial and industrial distribution circuits.
• 50 kA breaking capacity: Provides substantial short-circuit interruption capability.
• Four-pole configuration: Supports three-phase distribution systems requiring a fourth switching pole.
• TMA thermal-magnetic protection: Combines overload and short-circuit protection functions.
• Thermal overload protection: Helps protect conductors and equipment against sustained excessive current.
• Magnetic short-circuit protection: Provides rapid protective operation during sufficiently high fault currents.
• Adjustable protection functionality: Supports configuration of protection characteristics for suitable electrical applications.
• ABB SACE Tmax XT4S technology: Provides dependable switching and protective performance.
• High breaking capacity: Suitable for distribution circuits with demanding prospective fault-current requirements.
• Manual switching and automatic tripping: Combines circuit control with automatic fault protection.
• Protecta Power compatibility: Designed for use within appropriately configured ABB distribution equipment.

Key Features

• ABB EPX-XT4S-TM0634 moulded case circuit breaker.
• 63 A rated current.
• Four-pole (4P) configuration.
• 50 kA short-circuit breaking capacity.
• ABB SACE Tmax XT4S circuit breaker platform.
• TMA adjustable thermal-magnetic trip unit.
• Thermal protection against sustained overload conditions.
• Magnetic protection against short-circuit faults.
• Automatic protective tripping during applicable overcurrent conditions.
• Manual operating mechanism for circuit switching.
• Four-pole switching arrangement for suitable three-phase electrical systems.
• S breaking capacity class within the ABB Tmax XT4 family.
• Designed for low-voltage AC electrical distribution.
• Suitable for compatible ABB Protecta Power distribution assemblies.
• Applicable to commercial and industrial switchgear installations.

Adjustable Thermal-Magnetic Protection for Four-Pole Distribution

The ABB EPX-XT4S-TM0634 uses a TMA thermal-magnetic protection release to respond to overload and short-circuit conditions. The thermal protection element responds to sustained excessive current through a time-dependent operating characteristic, helping protect conductors and connected equipment against overheating. The magnetic protection element provides rapid tripping when the current reaches the applicable short-circuit threshold. The available adjustment ranges and final protection settings should be confirmed against ABB's technical documentation for the supplied release.

The ABB SACE Tmax XT4S platform combines robust circuit breaker construction with dependable low-voltage protection. Featuring a 63 A rated current, four-pole construction and 50 kA breaking capacity, the EPX-XT4S-TM0634 is suitable for distribution circuits requiring four-pole switching and substantial short-circuit interruption capability. Correct selection must consider the operating voltage, prospective fault current, conductor ratings, neutral switching requirements and protective coordination.

Typical Applications

• ABB Protecta Power electrical distribution boards.
• Commercial and industrial low-voltage switchboards.
• Three-phase distribution systems requiring four-pole switching.
• 63 A outgoing feeders and distribution circuits.
• Sub-distribution panels in commercial buildings.
• Industrial control panel supply circuits.
• Manufacturing and production facilities.
• Warehouses and logistics installations.
• Commercial building electrical infrastructure.
• Electrical panel building and switchgear assembly projects.
• Distribution circuits requiring thermal overload and magnetic short-circuit protection.
• Electrical maintenance, refurbishment and distribution system upgrades.