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1SDX254836R1 ABB EPX-XT4N-E2-1603 160A 3-Pole 36kA Ekip LSI Moulded Case Circuit Breaker
ABB EPX-XT4N-E2-1603 is a 160 A three-pole moulded case circuit breaker with 36 kA breaking capacity at 380–415 V AC and an Ekip Dip LSI electronic trip unit providing adjustable overload, short-time delayed and instantaneous short-circuit protection for low-voltage electrical distribution.
£1,487.45
Why Choose the ABB EPX-XT4N-E2-1603 160A 3-Pole MCCB?
The ABB EPX-XT4N-E2-1603 is a 160 A three-pole moulded case circuit breaker (MCCB) designed to provide reliable overload and short-circuit protection in low-voltage electrical distribution systems. Featuring a 36 kA breaking capacity and an Ekip Dip LSI electronic trip unit, this circuit breaker delivers configurable protection for commercial, industrial and infrastructure installations.
As part of the ABB Protecta Power Devices range, the EPX-XT4N-E2-1603 incorporates proven ABB SACE Tmax XT4N circuit breaker technology. Its electronic protection system combines long-time overload protection (L), short-time delayed short-circuit protection (S) and instantaneous short-circuit protection (I). These functions help electrical engineers coordinate circuit protection with the characteristics of distribution feeders, connected equipment and downstream protective devices.
With a 160 A rated current, three-pole configuration and 36 kA short-circuit breaking capacity at 380–415 V AC, the EPX-XT4N-E2-1603 is suitable for three-phase electrical distribution systems requiring dependable electronic circuit protection. Its XT4N 160 configuration, fixed-mounted construction and front connection terminals make it a practical solution for electrical panel builders, contractors and industrial maintenance engineers.
Key Advantages
- 160 A rated current suitable for commercial and industrial low-voltage distribution circuits.
- 36 kA breaking capacity at 380–415 V AC for dependable short-circuit protection.
- Three-pole configuration designed for three-phase electrical distribution systems.
- Ekip Dip LSI electronic trip unit provides configurable overload and short-circuit protection.
- Long-time protection (L) helps safeguard conductors and equipment against sustained overload currents.
- Short-time delayed protection (S) supports protection coordination with downstream circuit breakers.
- Instantaneous protection (I) provides rapid response to high short-circuit currents.
- Independent L, S and I protection functions provide greater configuration flexibility than an LS/I release.
- ABB SACE Tmax XT4N technology combines robust construction with reliable switching performance.
- Fixed-mounted construction with front terminals supports integration into compatible electrical distribution assemblies.
- Suitable for ABB Protecta Power distribution systems and industrial switchgear installations.
Key Features
- ABB EPX-XT4N-E2-1603 moulded case circuit breaker.
- 160 A rated current.
- Three-pole (3P) configuration.
- 36 kA rated ultimate short-circuit breaking capacity (Icu) at 380–415 V AC.
- Ekip Dip LSI electronic protection release.
- Long-time overload protection (L) with adjustable protection settings.
- Short-time delayed protection (S) for short-circuit fault response and coordination.
- Instantaneous protection (I) for rapid interruption of high fault currents.
- LSI protection functionality incorporating long-time, short-time and instantaneous protection.
- ABB SACE Tmax XT4N 160 configuration with a 160 A electronic release.
- Fixed installation with front connection terminals.
- Rated operational voltage up to 690 V AC.
- Manual operating mechanism for circuit switching.
- Designed for low-voltage AC power distribution and circuit protection.
- Compatible with appropriately selected ABB Tmax XT accessories and Protecta Power distribution equipment.
Advanced LSI Electronic Protection for Three-Phase Distribution Systems
Moulded case circuit breakers such as the ABB EPX-XT4N-E2-1603 protect electrical distribution circuits against overload currents and short-circuit faults. The integrated Ekip Dip LSI electronic trip unit provides three protection functions: long-time overload protection, short-time delayed short-circuit protection and instantaneous short-circuit protection. The availability of both delayed and instantaneous protection functions enables electrical engineers to configure fault response and coordinate protective devices within a distribution system.
The ABB SACE Tmax XT4N platform combines reliable electronic protection with compact mechanical construction suitable for modern switchgear assemblies. With its 160 A rated current, three-pole switching arrangement and 36 kA breaking capacity at 380–415 V AC, the EPX-XT4N-E2-1603 supports dependable protection of three-phase distribution feeders, switchboard circuits and industrial electrical installations. Its suitability for ABB Protecta Power systems makes it a practical choice for panel builders and electrical contractors requiring configurable LSI protection in low-voltage distribution equipment.
Typical Applications
- ABB Protecta Power electrical distribution boards.
- Commercial and industrial low-voltage switchboards.
- Three-phase electrical distribution systems requiring three-pole circuit protection.
- Electrical distribution feeders and sub-distribution circuits.
- Main and secondary distribution panels in commercial buildings.
- Industrial machinery and equipment supply circuits.
- Manufacturing facilities and production environments.
- Warehouses, logistics facilities and industrial infrastructure.
- Electrical panel building and switchgear assembly projects.
- Power distribution systems requiring adjustable electronic overload protection.
- Electrical installations requiring short-time delayed and instantaneous fault protection.
- Distribution networks where coordination between upstream and downstream protective devices is required.
- Electrical installation upgrades, maintenance and refurbishment projects.
Technical Specifications
| Product range | Protecta Power Devices |
|---|---|
| Circuit breaker family | SACE Tmax XT |
| Series | XT4N |
| ABB order code | 1SDX254836R1 |
| ABB base circuit breaker reference | 1SDA068135R1 |
| Product type | Moulded case circuit breaker (MCCB) |
| Rated current (In) | 160 A |
| Number of poles | 3 |
| Rated ultimate short-circuit breaking capacity (Icu) | 36 kA at 380–415 V AC |
| Trip unit | Ekip Dip LSI |
| Release type | Electronic |
| Long-time protection (L) | Adjustable overload protection |
| Short-time protection (S) | Delayed short-circuit protection |
| Instantaneous protection (I) | Short-circuit protection without intentional delay |
| Protection functions | L, S and I |
| Frame size | XT4 |
| Frame designation | XT4N 160 |
| Rated uninterrupted current (Iu) | 160 A |
| Breaking capacity class | N |
| Rated operational voltage (Ue) | Up to 690 V AC |
| Rated insulation voltage (Ui) | 1,000 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Mounting arrangement | Fixed installation |
| Terminal arrangement | Front terminals |
| Operating mechanism | Manual toggle |
| Application | Low-voltage electrical distribution and circuit protection |
| Applicable standard | IEC 60947-2 |
Frequently Asked Questions
What is the ABB EPX-XT4N-E2-1603 used for?
The ABB EPX-XT4N-E2-1603 is a 160 A three-pole moulded case circuit breaker used to protect low-voltage electrical distribution circuits against overloads and short circuits in commercial and industrial installations.
What is the rated current of the EPX-XT4N-E2-1603?
The circuit breaker has a rated current of 160 A and uses an ABB SACE Tmax XT4N 160 configuration with a 160 A Ekip Dip LSI electronic protection release.
What is the breaking capacity of this ABB MCCB?
The EPX-XT4N-E2-1603 has a 36 kA rated ultimate short-circuit breaking capacity at 380–415 V AC. This rating must be considered alongside the prospective fault current and other requirements of the electrical installation.
What does LSI mean on the ABB EPX-XT4N-E2-1603?
LSI identifies an electronic trip unit providing long-time overload protection (L), short-time delayed short-circuit protection (S) and instantaneous short-circuit protection (I). These functions provide configurable protection against different overcurrent and fault conditions.
What is the difference between LSI and LS/I protection?
An LSI trip unit incorporates long-time, short-time delayed and instantaneous protection functions. An LS/I trip unit provides long-time protection together with a selectable short-time delayed or instantaneous short-circuit protection function. LSI therefore offers both short-circuit protection functions within the same release.
Does the ABB EPX-XT4N-E2-1603 provide adjustable protection?
Yes. The Ekip Dip LSI electronic trip unit provides adjustable protection characteristics for overload and short-circuit conditions. Protection settings should be selected according to the circuit design, coordination requirements and ABB's installation instructions.
Is the ABB EPX-XT4N-E2-1603 a three-pole circuit breaker?
Yes. The EPX-XT4N-E2-1603 is a three-pole (3P) MCCB designed for three-phase electrical distribution applications requiring three-pole switching and circuit protection.
What ABB circuit breaker series does this model belong to?
The EPX-XT4N-E2-1603 uses ABB SACE Tmax XT4N circuit breaker technology and belongs to the ABB Protecta Power Devices product range. The corresponding ABB base circuit breaker reference is 1SDA068135R1.
Can the ABB EPX-XT4N-E2-1603 help with protection coordination?
Yes. Its Ekip Dip LSI protection release includes short-time delayed and instantaneous protection functions that can support coordination with downstream protective devices. Achieving the required selectivity depends on the actual circuit conditions, protection settings and manufacturer coordination data.
Where is the ABB EPX-XT4N-E2-1603 typically installed?
This MCCB is typically installed in low-voltage distribution boards, industrial switchboards and electrical panel assemblies, including compatible ABB Protecta Power distribution systems. Its fixed-mounted construction and front connection terminals support integration into suitable electrical enclosures.
Trusted by Electrical Contractors and Panel Builders Worldwide
ABB SACE Tmax XT moulded case circuit breakers are widely used by electrical engineers, panel builders, industrial maintenance teams and electrical contractors for dependable overload and short-circuit protection. The ABB EPX-XT4N-E2-1603 combines a 160 A rated current, three-pole configuration and 36 kA breaking capacity with configurable Ekip Dip LSI electronic protection, making it a practical choice for reliable three-phase low-voltage electrical distribution.
