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1SDX253985R1 ABB EPX-XT4N-E1-0633 63A 3P 36kA LS/I Electronic Moulded Case Circuit Breaker
ABB EPX-XT4N-E1-0633 (1SDX253985R1) is a 63 A three-pole SACE Tmax XT4N160 moulded case circuit breaker with a specified 36 kA short-circuit breaking capacity and ABB Ekip Dip LS/I electronic protection. Designed for compatible ABB Protecta Power distribution assemblies, it provides configurable overload and short-circuit protection for three-phase outgoing circuits.
£795.61
Why Choose the ABB EPX-XT4N-E1-0633 63A 3-Pole Electronic MCCB?
The ABB EPX-XT4N-E1-0633 is a high-performance 63 A three-pole moulded case circuit breaker (MCCB) designed to provide dependable overload and short-circuit protection in commercial and industrial low-voltage electrical distribution systems. Based on the established ABB SACE Tmax XT4N160 circuit breaker platform, this protective device combines robust construction with advanced electronic trip technology for applications requiring precise and configurable circuit protection.
As part of the ABB Protecta Power Devices product group, the EPX-XT4N-E1-0633 is intended for integration into compatible ABB Protecta Power distribution assemblies. Its ABB Ekip Dip LS/I electronic trip unit provides long-time overload protection and selectable short-circuit protection characteristics, allowing electrical engineers to coordinate the breaker with the requirements of the protected circuit.
With a 63 A rated current, a specified 36 kA short-circuit breaking capacity and a three-pole (3P) configuration, the EPX-XT4N-E1-0633 is suitable for three-phase outgoing feeders, commercial distribution boards, industrial electrical panels and building services installations. The electronic trip system offers an alternative to conventional thermal-magnetic protection where greater flexibility in protective settings is desirable.
Identified by ABB order code 1SDX253985R1, this MCCB provides a clearly specified solution for electrical contractors, consulting engineers, panel builders and facilities managers seeking reliable three-phase circuit protection within the ABB Protecta Power range.
Key Advantages
- 63 A rated current for dependable protection of appropriately designed three-phase distribution circuits.
- 36 kA short-circuit breaking capacity in the specified ABB Protecta Power application.
- Three-pole (3P) construction enables coordinated switching and protection of three phase conductors.
- Electronic LS/I trip protection provides configurable overload and short-circuit protection characteristics.
- ABB Ekip Dip electronic trip technology supports accurate and repeatable protective operation.
- Long-time overload protection (L) helps safeguard cables and connected electrical equipment against sustained excessive current.
- Selectable short-circuit protection characteristics support coordination with upstream and downstream protective devices.
- Based on the established ABB SACE Tmax XT4N160 platform.
- 160 A frame platform provides a robust foundation for the 63 A protective device.
- 110 mm nominal device width supports efficient use of distribution board space.
- Designed for installation within compatible ABB Protecta Power distribution assemblies.
- Suitable for commercial, industrial and building services applications requiring electronic MCCB protection.
Key Features
- ABB Protecta Power Devices product group.
- EPX-XT4N-E1-0633 product designation.
- ABB order code 1SDX253985R1.
- ABB SACE Tmax XT4N160 circuit breaker platform.
- 63 A rated current for three-phase outgoing circuit protection.
- 160 A frame rating within the XT4N160 platform.
- 36 kA specified short-circuit breaking capacity.
- Three-pole (3P) configuration for coordinated switching of three phase conductors.
- ABB Ekip Dip LS/I electronic trip unit.
- Long-time protection (L) against sustained overload conditions.
- Short-time protection (S) for delayed short-circuit operation when selected.
- Instantaneous protection (I) for rapid short-circuit operation when selected.
- LS/I protection arrangement provides long-time protection with a choice of short-time or instantaneous short-circuit characteristics.
- Electronic trip settings support circuit protection coordination.
- 110 mm nominal device width for compact distribution board installation.
- Manual operating mechanism for circuit switching and isolation when correctly installed.
- Suitable for installation using compatible ABB Protecta Power mounting and connection accessories.
Advanced Electronic LS/I Circuit Protection for Three-Phase Electrical Distribution
The ABB EPX-XT4N-E1-0633 63 A electronic MCCB is designed to protect low-voltage electrical distribution circuits against abnormal current conditions. Unlike a conventional thermal-magnetic circuit breaker, its electronic trip unit evaluates current conditions electronically and initiates tripping according to the selected protection settings. This provides additional flexibility when coordinating protection across commercial and industrial electrical distribution systems.
The ABB Ekip Dip LS/I trip unit incorporates long-time protection (L), which responds to sustained overload conditions that could otherwise cause excessive heating of electrical cables and connected equipment. Its short-circuit protection can be configured to use the available short-time (S) or instantaneous (I) characteristics, depending on the protective requirements of the installation.
The distinction between LS/I and LSI is important when selecting an electronic MCCB. An LS/I release provides long-time protection with a choice between short-time and instantaneous short-circuit protection modes. An LSI release provides long-time, short-time and instantaneous protection functions together. Engineers should select the appropriate release according to the required protection coordination and system design.
The three-pole configuration allows coordinated protection and switching of all three phase conductors. This makes the EPX-XT4N-E1-0633 suitable for three-phase outgoing feeders, industrial distribution circuits and commercial electrical supplies where a dedicated switched neutral pole is not required.
Based on the ABB SACE Tmax XT4N160 platform, the EPX-XT4N-E1-0633 combines a 63 A rated current with a specified 36 kA breaking capacity. Its 110 mm nominal width helps electrical designers plan efficient distribution board layouts while retaining the protection flexibility associated with electronic trip technology.
Correct circuit breaker selection should consider the installation operating voltage, prospective short-circuit current, cable sizing, electronic trip settings, selectivity requirements and compatibility with the distribution assembly. The applicable breaking capacity and exact Ekip Dip adjustment ranges should be verified against the relevant ABB technical documentation before installation and commissioning.
Typical Applications
- ABB Protecta Power distribution boards requiring 63 A three-pole electronic MCCB protection.
- Commercial building electrical distribution and outgoing feeder circuits.
- Industrial electrical panels supplying appropriately rated three-phase loads.
- Three-phase sub-distribution systems requiring configurable electronic protection.
- Building services installations supplying mechanical and electrical plant.
- Manufacturing facilities and workshop electrical distribution networks.
- Warehouses and logistics centres with three-phase electrical infrastructure.
- Office buildings and retail premises with dedicated outgoing distribution circuits.
- Distribution board refurbishment projects using compatible ABB Protecta Power equipment.
- Switchboard manufacturing and panel-building projects requiring a 63 A, 3P, 36 kA electronic LS/I MCCB.
Technical Specifications
| Product group | Protecta Power Devices |
|---|---|
| Product range | SACE Tmax XT |
| Circuit breaker platform | XT4N160 |
| Model / SKU | EPX-XT4N-E1-0633 |
| ABB order code | 1SDX253985R1 |
| Product type | Moulded case circuit breaker (MCCB) |
| Rated current | 63 A |
| Frame rating | 160 A |
| Short-circuit breaking capacity | 36 kA (specified Protecta Power application) |
| Number of poles | 3 |
| Pole configuration | Three-pole (3P) |
| Trip unit | ABB Ekip Dip LS/I |
| Trip technology | Electronic |
| Protection designation | LS/I |
| Long-time protection (L) | Overload protection |
| Short-time protection (S) | Delayed short-circuit protection, selectable according to the trip unit configuration |
| Instantaneous protection (I) | Instantaneous short-circuit protection, selectable according to the trip unit configuration |
| Protection arrangement | Long-time protection with selectable short-time or instantaneous short-circuit characteristics |
| Trip setting adjustment | Refer to the fitted ABB Ekip Dip LS/I release documentation |
| Neutral switching | No dedicated switched neutral pole |
| Applicable circuit breaker standard | IEC 60947-2 |
| Nominal device width | 110 mm |
| Installation type | Fixed installation within a compatible distribution assembly |
| Mounting compatibility | ABB Protecta Power, subject to appropriate mounting and connection arrangements |
| Electrical application | Three-phase low-voltage power distribution |
| Typical use | Outgoing feeder and sub-distribution circuit protection |
Frequently Asked Questions
What is the ABB EPX-XT4N-E1-0633 used for?
The ABB EPX-XT4N-E1-0633 is a 63 A three-pole moulded case circuit breaker designed to protect low-voltage electrical distribution circuits against overloads and short circuits. It uses an ABB Ekip Dip LS/I electronic trip unit and is intended for compatible ABB Protecta Power distribution assemblies.
What are the rated current and breaking capacity of the EPX-XT4N-E1-0633?
The EPX-XT4N-E1-0633 has a 63 A rated current and a specified 36 kA short-circuit breaking capacity within the ABB Protecta Power range. It uses the ABB SACE Tmax XT4N160 platform, which has a 160 A frame rating. The applicable breaking capacity must be checked against the installation operating voltage and prospective fault current.
What does LS/I mean on the ABB EPX-XT4N-E1-0633?
LS/I identifies an electronic protection arrangement providing long-time overload protection (L) together with a choice of short-time delayed short-circuit protection (S) or instantaneous short-circuit protection (I). The available protection mode and adjustment settings should be selected according to the electrical installation design and the manufacturer's instructions.
What is the advantage of the three-pole configuration?
The three-pole (3P) configuration enables coordinated switching and protection of three phase conductors, making the EPX-XT4N-E1-0633 suitable for appropriately designed three-phase electrical distribution circuits. Unlike a four-pole MCCB, it does not include a dedicated switched neutral pole.
Where can the ABB EPX-XT4N-E1-0633 be installed?
The breaker is intended for installation within compatible ABB Protecta Power distribution boards, using the appropriate mounting and connection arrangements. The ABB XT4 three-pole platform has a nominal width of 110 mm. Installation and electronic trip configuration should be carried out by a competent electrical professional in accordance with the circuit design and applicable electrical regulations.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax XT moulded case circuit breakers are established components in low-voltage electrical distribution, offering dependable protection for commercial and industrial installations. The ABB EPX-XT4N-E1-0633 combines a 63 A rated current, three-pole switching, specified 36 kA short-circuit breaking capacity and configurable ABB Ekip Dip LS/I electronic protection in a robust device intended for compatible ABB Protecta Power distribution systems.
