Why Choose the ABB EPX-XT1S-TM0634 63A 4-Pole MCCB?
The ABB EPX-XT1S-TM0634 is a compact and reliable 63 A 4-pole moulded case circuit breaker (MCCB) designed to provide dependable overload and short-circuit protection in low-voltage electrical distribution systems. As part of the ABB Protecta Power Devices product group, this circuit breaker incorporates an XT1S frame with a thermal-magnetic adjustable (TMA) trip unit, making it suitable for commercial, industrial and building power distribution applications.
The EPX-XT1S-TM0634 combines thermal overload protection with magnetic short-circuit protection to help safeguard electrical circuits, cables and connected equipment against damaging fault conditions. Its four-pole configuration enables the switching and protection of three-phase circuits with a neutral conductor, making it particularly suitable for three-phase distribution boards and electrical installations requiring four-pole isolation.
With a 63 A rated current, 50 kA short-circuit breaking capacity and 4-pole configuration, the ABB EPX-XT1S-TM0634 offers a practical protection solution for electrical distribution assemblies. Its compact XT1S construction supports efficient integration into ABB Protecta Power distribution equipment and other compatible low-voltage switchgear installations.
Key Advantages
- Reliable 63 A moulded case circuit breaker for low-voltage electrical distribution.
- 4-pole configuration suitable for three-phase systems with a neutral conductor.
- 50 kA short-circuit breaking capacity for demanding electrical protection applications.
- Integrated thermal-magnetic adjustable (TMA) trip unit for overload and short-circuit protection.
- Compact ABB XT1S frame designed for efficient installation within electrical distribution assemblies.
- Mechanical switching mechanism provides manual circuit isolation and reset following a protective trip.
- Suitable for integration into compatible ABB Protecta Power distribution systems.
- Helps protect electrical cables and connected equipment against excessive current and short-circuit faults.
- Robust moulded case construction supports dependable operation in commercial and industrial installations.
Key Features
- ABB Protecta Power Devices product group.
- EPX-XT1S-TM0634 moulded case circuit breaker.
- XT1S frame for compact low-voltage circuit protection.
- 63 A rated current.
- 4-pole switching and protection configuration.
- 50 kA rated short-circuit breaking capacity.
- TMA thermal-magnetic adjustable trip unit.
- Thermal protection against sustained overload conditions.
- Magnetic protection against high short-circuit currents.
- Manual operating mechanism with circuit breaker status indication.
- Designed for installation within compatible electrical distribution boards and switchgear assemblies.
- Suitable for three-phase low-voltage power distribution applications.
Technical Specifications
- Manufacturer: ABB
- Product group: Protecta Power Devices
- Series / Frame: XT1S
- Model: EPX-XT1S-TM0634
- ABB order code: 1SDX248670R1
- Product type: Moulded case circuit breaker (MCCB)
- Rated current: 63 A
- Number of poles: 4
- Short-circuit breaking capacity: 50 kA
- Trip unit: TMA – Thermal Magnetic Adjustable
- Overload protection: Thermal trip protection
- Short-circuit protection: Magnetic trip protection
- Application: Low-voltage electrical distribution
- Operating mechanism: Manual circuit breaker operation
- Construction: Moulded case
- Mounting application: Electrical distribution boards and switchgear assemblies
- Installation environment: Compatible enclosed electrical distribution equipment
- Product classification: Low-voltage circuit protection device
Reliable Circuit Protection for Low-Voltage Power Distribution
Moulded case circuit breakers such as the ABB EPX-XT1S-TM0634 are essential components in modern electrical distribution systems. They automatically interrupt electrical circuits when excessive current or short-circuit conditions occur, helping minimise damage to electrical infrastructure and reducing the risk of prolonged fault conditions.
The TMA thermal-magnetic trip unit combines two complementary protection functions. The thermal element responds to sustained overload currents, while the magnetic element provides rapid operation during significant short-circuit faults. This combination makes the EPX-XT1S-TM0634 suitable for protecting distribution circuits where dependable overcurrent protection is required.
The four-pole XT1S configuration is particularly useful in three-phase electrical distribution systems incorporating a neutral conductor. Its compact design supports installation within suitable electrical panels, while the 63 A rating and 50 kA breaking capacity provide a defined protection capability for appropriately designed installations.
As part of the ABB Protecta Power Devices range, the EPX-XT1S-TM0634 can be incorporated into compatible distribution equipment for commercial buildings, industrial facilities and electrical infrastructure projects. Correct circuit breaker selection should consider prospective fault current, system voltage, conductor sizing, protection coordination and applicable installation requirements.
Typical Applications
- Low-voltage electrical distribution boards.
- ABB Protecta Power distribution assemblies.
- Commercial building electrical installations.
- Industrial power distribution systems.
- Three-phase distribution circuits with neutral conductors.
- Electrical switchboards and control panels.
- Sub-distribution boards and outgoing feeder circuits.
- Manufacturing and production facilities.
- Warehouses, offices and commercial premises.
- Electrical infrastructure requiring 63 A four-pole circuit protection.
