Why Choose the ABB EPX-XT4S-E2-2504 250A 4-Pole 50kA MCCB?
The ABB EPX-XT4S-E2-2504 is a high-performance 250 A four-pole moulded case circuit breaker (MCCB) designed to provide reliable overload and short-circuit protection in low-voltage electrical distribution systems. Featuring a 50 kA breaking capacity and advanced LSI electronic protection, this circuit breaker forms part of the ABB Protecta Power Devices range and incorporates the proven ABB Tmax XT4S circuit breaker platform.
Designed for professional electrical distribution applications, the EPX-XT4S-E2-2504 combines robust switching performance with electronic protection technology. Its LSI trip functionality provides long-time overload protection, short-time delayed short-circuit protection and instantaneous short-circuit protection, allowing the protective characteristics to be coordinated with the requirements of the electrical installation.
With a rated current of 250 A, a four-pole configuration and a specified 50 kA short-circuit breaking capacity, the EPX-XT4S-E2-2504 is suitable for compatible Protecta Power distribution assemblies serving commercial buildings, industrial facilities and electrical infrastructure. Its XT4S frame and electronic trip system provide a dependable solution for protecting distribution circuits and managing electrical faults.
Key Advantages
- High-performance 250 A moulded case circuit breaker for low-voltage power distribution.
- Four-pole (4P) configuration suitable for applications requiring four-pole switching and protection arrangements.
- 50 kA breaking capacity for demanding electrical distribution environments.
- Advanced LSI electronic trip protection for overload and short-circuit faults.
- Long-time, short-time and instantaneous protection functions support coordinated circuit protection.
- Proven ABB Tmax XT4S circuit breaker technology.
- Designed for integration into compatible ABB Protecta Power distribution assemblies.
- Electronic protection characteristics provide greater configuration flexibility than conventional fixed thermal-magnetic releases.
- Suitable for commercial and industrial electrical distribution installations.
Key Features
- ABB Protecta Power Devices product range.
- EPX-XT4S-E2-2504 manufacturer product designation.
- 1SDX248432R1 ABB order code.
- XT4S moulded case circuit breaker frame.
- 250 A rated current.
- Four-pole (4P) circuit breaker construction.
- 50 kA short-circuit breaking capacity.
- Electronic LSI trip protection.
- L – Long-time protection: Protects against sustained overload currents.
- S – Short-time protection: Provides delayed short-circuit protection to support discrimination between protective devices.
- I – Instantaneous protection: Provides rapid tripping for high-level short-circuit faults.
- Manual switching and circuit isolation functionality when installed within the manufacturer's specified operating conditions.
- Designed for integration into compatible low-voltage electrical distribution equipment.
Technical Specifications
- Manufacturer: ABB
- Product range: Protecta Power Devices
- Circuit breaker family: Tmax XT
- Frame: XT4S
- Model: EPX-XT4S-E2-2504
- ABB order code: 1SDX248432R1
- Product type: Moulded case circuit breaker (MCCB)
- Rated current: 250 A
- Number of poles: 4
- Pole configuration: 4P
- Breaking capacity: 50 kA
- Trip technology: Electronic
- Protection functions: LSI
- Long-time protection (L): Overload protection
- Short-time protection (S): Delayed short-circuit protection
- Instantaneous protection (I): Instantaneous short-circuit protection
- Rated operational voltage (XT4S platform): Up to 690 V AC
- Rated insulation voltage (XT4S platform): 1,000 V
- Rated impulse withstand voltage (XT4S platform): 8 kV
- Installation application: Low-voltage electrical distribution assemblies
- Compatible distribution system: ABB Protecta Power
- Product category: Electronic trip moulded case circuit breakers
Reliable Electronic Circuit Protection for Power Distribution
Moulded case circuit breakers protect electrical installations by interrupting current when overload or short-circuit conditions occur. Unlike conventional thermal-magnetic circuit breakers, electronic trip MCCBs use electronic protection systems to monitor current and determine when a protective trip is required. This allows greater flexibility in selecting protection characteristics and coordinating devices within a distribution network.
The ABB EPX-XT4S-E2-2504 incorporates LSI electronic protection, providing three complementary protective functions. Long-time protection responds to sustained overload conditions, short-time protection introduces controlled delay for selected short-circuit conditions, and instantaneous protection responds rapidly to severe faults. Together, these functions support effective protection of electrical distribution circuits and improved coordination with upstream and downstream devices.
The XT4S frame belongs to ABB's Tmax XT moulded case circuit breaker family, developed for dependable electrical protection and switching in low-voltage installations. Its compact construction and electronic protection capabilities make it suitable for integration into modern electrical distribution assemblies.
As part of the ABB Protecta Power Devices range, the EPX-XT4S-E2-2504 is intended for use in compatible Protecta Power distribution configurations. Correct installation, protective setting selection and discrimination studies should be undertaken in accordance with ABB technical documentation and the requirements of the completed electrical installation. The specified 50 kA breaking capacity must be assessed at the relevant operating voltage and under the applicable manufacturer's rating conditions.
Typical Applications
- ABB Protecta Power low-voltage electrical distribution panelboards.
- Commercial building main and sub-distribution systems.
- Industrial electrical power distribution installations.
- Four-pole outgoing feeder protection.
- Electrical distribution circuits requiring 250 A MCCB protection.
- Power distribution systems requiring electronic LSI protection coordination.
- Manufacturing facilities and industrial electrical infrastructure.
- Commercial and institutional building electrical installations.
- Electrical switchboard manufacturing and panel building.
- OEM power distribution assemblies and electrical system integration.
