Why Choose the ABB EPX-XT2S-TM0204 20A 4-Pole MCCB?
The ABB EPX-XT2S-TM0204 is a compact and dependable 20 A 4-pole moulded case circuit breaker (MCCB) designed to provide reliable overload and short-circuit protection in low-voltage electrical distribution systems. As part of the ABB Protecta Power Devices product group, this circuit breaker features an XT2S frame and thermal-magnetic adjustable (TMA) trip unit, making it suitable for commercial buildings, industrial installations and electrical distribution assemblies.
The EPX-XT2S-TM0204 combines thermal overload protection with magnetic short-circuit protection to help safeguard electrical circuits, cables and connected equipment against excessive current and electrical faults. Its four-pole construction enables switching of three-phase circuits incorporating a neutral conductor, making it particularly suitable for power distribution systems requiring four-pole circuit isolation and protection.
With a 20 A rated current, 50 kA short-circuit breaking capacity and 4-pole configuration, the ABB EPX-XT2S-TM0204 provides a robust protection solution for appropriately designed low-voltage installations. Its compact XT2S construction supports efficient integration into compatible ABB Protecta Power distribution boards, switchgear assemblies and electrical control panels.
Key Advantages
- Reliable 20 A moulded case circuit breaker for low-voltage electrical distribution.
- 4-pole configuration suitable for three-phase electrical systems incorporating 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 XT2S frame supports efficient installation within electrical distribution assemblies.
- Thermal protection helps prevent damage caused by sustained overload conditions.
- Magnetic protection provides rapid circuit interruption during significant short-circuit faults.
- Manual switching mechanism supports circuit isolation and resetting following a protective trip.
- Suitable for integration into compatible ABB Protecta Power distribution systems.
- Robust moulded case construction supports dependable operation in commercial and industrial environments.
Key Features
- ABB Protecta Power Devices product group.
- EPX-XT2S-TM0204 moulded case circuit breaker.
- XT2S frame for low-voltage circuit protection.
- 20 A rated current.
- 4-pole circuit breaker configuration.
- 50 kA short-circuit breaking capacity.
- TMA thermal-magnetic adjustable trip unit.
- Thermal overload protection for sustained overcurrent conditions.
- Magnetic short-circuit protection for high fault currents.
- Manual operating mechanism with circuit breaker status indication.
- Four-pole construction suitable for three-phase distribution circuits with a neutral conductor.
- Designed for integration into compatible low-voltage distribution boards and switchgear assemblies.
- Suitable for commercial, industrial and building electrical distribution applications.
Technical Specifications
- Manufacturer: ABB
- Product group: Protecta Power Devices
- Series / Frame: XT2S
- Model: EPX-XT2S-TM0204
- ABB order code: 1SDX255108R1
- Product type: Moulded case circuit breaker (MCCB)
- Rated current: 20 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: Compatible electrical distribution boards and switchgear assemblies
- Installation environment: Enclosed low-voltage electrical distribution equipment
- Product classification: Low-voltage circuit protection device
Reliable Circuit Protection for Low-Voltage Electrical Systems
Moulded case circuit breakers such as the ABB EPX-XT2S-TM0204 are essential components in modern electrical distribution installations. They automatically interrupt electrical circuits when overload or short-circuit conditions occur, helping reduce the risk of damage to electrical cables, distribution equipment and connected loads while supporting reliable electrical operation.
The TMA thermal-magnetic trip unit combines two complementary protection functions. The thermal element responds to sustained overload currents, while the magnetic element operates during significant short-circuit conditions. This combination provides dependable overcurrent protection and helps minimise the effects of electrical faults on connected equipment.
The 20 A four-pole XT2S configuration is particularly suitable for three-phase electrical distribution systems incorporating a neutral conductor. Its compact construction supports efficient use of available space within electrical panels, while the specified 50 kA breaking capacity provides substantial short-circuit interruption capability under the applicable rated conditions.
As part of the ABB Protecta Power Devices range, the EPX-XT2S-TM0204 is designed for integration into compatible low-voltage distribution equipment. Electrical engineers and installers can use this circuit breaker in appropriately specified commercial and industrial installations where dependable circuit protection, isolation and maintainability are important.
Correct selection and installation should account for the electrical system voltage, prospective short-circuit current, conductor sizing, protective device coordination and applicable wiring regulations. The suitability of the circuit breaker for a particular installation must be assessed against the relevant electrical design 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 plants and production facilities.
- Warehouses, offices and commercial premises.
- Building services and electrical infrastructure installations.
- Electrical systems requiring 20 A four-pole circuit protection.
