Why Choose the ABB EPX-XT2N-TM0204 20A 4-Pole 36kA MCCB?
The ABB EPX-XT2N-TM0204, order code 1SDX253696R1, is a 20 A, 4-pole moulded-case circuit breaker (MCCB) with a specified 36 kA breaking capacity and TMA thermomagnetic trip unit. Part of the ABB Protecta Power Devices range, this circuit breaker is designed for compatible low-voltage electrical distribution applications requiring circuit protection, isolation and switching functionality.
Associated with the ABB Tmax XT2N circuit breaker family, the EPX-XT2N-TM0204 combines a compact moulded-case circuit breaker format with thermomagnetic protection technology. Its 20 A current rating makes it relevant to appropriately designed lower-current distribution circuits, while the four-pole configuration supports applications requiring coordinated switching of four conductors.
The EPX-XT2N-TM0204 is identified by the manufacturer's description 20A 4P 36kA MCCB - TMA. These specifications provide electrical engineers, panel builders and maintenance professionals with essential information when selecting a circuit breaker for compatible ABB Protecta Power distribution equipment. Final suitability must be confirmed against the installation's operating voltage, prospective fault current, protection requirements and applicable ABB technical documentation.
Key Advantages
- 20 A rated current for compatible low-voltage electrical distribution circuits.
- 4-pole configuration for applications requiring coordinated four-pole switching.
- 36 kA breaking capacity designation for installations with appropriately assessed fault levels.
- TMA thermomagnetic trip unit providing overload and short-circuit protection functions.
- Associated with the established ABB Tmax XT2N moulded-case circuit breaker family.
- Part of the ABB Protecta Power Devices product range.
- Combines circuit protection and switching functionality in one MCCB.
- Suitable for integration into compatible electrical distribution assemblies.
- Provides a clearly identified ABB device for professional specification, procurement and replacement.
Key Features
- ABB EPX-XT2N-TM0204 product designation.
- ABB order code: 1SDX253696R1.
- Product range: Protecta Power Devices.
- Circuit breaker family: Tmax XT2N.
- Device type: Moulded-case circuit breaker (MCCB).
- Rated current: 20 A.
- Number of poles: 4.
- Breaking capacity designation: 36 kA.
- Trip unit: TMA thermomagnetic.
- Provides thermal overload and magnetic short-circuit protection functions.
- Designed for compatible low-voltage electrical distribution applications.
- Suitable for professional electrical panel building and distribution equipment integration.
Technical Specifications
- Manufacturer: ABB
- Product designation: EPX-XT2N-TM0204
- ABB order code: 1SDX253696R1
- Product range: Protecta Power Devices
- Associated circuit breaker family: ABB Tmax XT2N
- Product type: Moulded-case circuit breaker
- Device abbreviation: MCCB
- Rated current: 20 A
- Number of poles: 4
- Pole configuration: 4P
- Breaking capacity designation: 36 kA
- Trip unit designation: TMA
- Trip unit technology: Thermomagnetic
- Protection functions: Overload and short-circuit protection
- Manufacturer product description: EPX-XT2N-TM0204 20A 4P 36kA MCCB - TMA
- Application: Low-voltage electrical distribution circuit protection and switching
Technical selection note: The manufacturer's supplied description specifies a 36 kA breaking capacity but does not identify the associated operating voltage or whether this value represents Icu or Ics. The applicable breaking capacity, trip adjustment ranges, electrical ratings and installation conditions must be verified against the exact ABB technical documentation.
Thermomagnetic Circuit Protection for Low-Voltage Distribution
Moulded-case circuit breakers are widely used in low-voltage electrical distribution systems to protect circuits against excessive current and to provide switching functionality. Correctly selected MCCBs help protect conductors and connected electrical equipment against overload and short-circuit conditions within the limits of their specified performance.
The ABB EPX-XT2N-TM0204 incorporates a TMA thermomagnetic trip unit. Thermomagnetic protection combines a thermal element associated with overload protection and a magnetic element associated with short-circuit protection. This approach provides two complementary protective functions within a single circuit breaker.
The 20 A rating and 4-pole configuration make the EPX-XT2N-TM0204 relevant to compatible distribution circuits where the electrical design calls for a four-pole protective device. The 36 kA breaking capacity designation is an important selection parameter when assessing the available prospective short-circuit current at the installation point.
As part of the ABB Protecta Power Devices range, the EPX-XT2N-TM0204 can be considered for integration into compatible electrical distribution equipment. Circuit breaker selection must account for conductor sizing, supply characteristics, earthing arrangement, protective coordination, operating voltage and installation requirements. The exact TMA adjustment characteristics and four-pole protection configuration should be confirmed using ABB documentation for order code 1SDX253696R1.
Typical Applications
- Compatible ABB Protecta Power electrical distribution assemblies.
- Low-voltage distribution circuits requiring 20 A protection.
- Electrical installations specifying a 4-pole MCCB.
- Industrial electrical distribution panels.
- Commercial building power distribution systems.
- Sub-distribution boards and feeder protection arrangements.
- Electrical control panel incoming and outgoing circuits.
- Compatible three-phase distribution arrangements requiring four-pole switching.
- OEM electrical panel building and switchgear assembly.
- Electrical distribution equipment refurbishment and maintenance.
- Replacement of compatible ABB Tmax XT2N circuit breakers.
