1SDX255146R1 ABB EPX-XT2S-E1-1604 160A 4-Pole 50kA MCCB LS/I – Protecta Power Devices

Why Choose the ABB EPX-XT2S-E1-1604 160A 4-Pole MCCB?

The ABB EPX-XT2S-E1-1604 is a 160 A, 4-pole moulded case circuit breaker (MCCB) with a specified 50 kA breaking capacity and LS/I protection. Part of the ABB Protecta Power Devices product group, this circuit breaker is designed for low-voltage electrical distribution applications requiring reliable overload and short-circuit protection.

Featuring a 160 A current rating and four-pole configuration, the EPX-XT2S-E1-1604 is suitable for appropriately designed three-phase, four-wire electrical distribution systems. Its LS/I protection arrangement provides long-time, short-time and instantaneous overcurrent protection functions, supporting the selection and coordination of protective devices within compatible electrical installations.

The 50 kA specified breaking capacity makes the EPX-XT2S-E1-1604 relevant to distribution systems where the prospective fault current is within the circuit breaker's applicable verified capability. Identified by ABB order code 1SDX255146R1, this MCCB provides a manufacturer-specific circuit protection solution for electrical contractors, switchboard manufacturers, consulting engineers and maintenance professionals working with compatible ABB Protecta Power equipment.

Key Advantages

• Genuine ABB Protecta Power Devices moulded case circuit breaker.
• 160 A rated current for appropriately designed low-voltage distribution circuits.
• 4-pole configuration for suitable three-phase, four-wire electrical systems.
• 50 kA specified breaking capacity for installations with compatible prospective fault levels.
• LS/I protection provides long-time, short-time and instantaneous overcurrent protection functions.
• Supports coordinated circuit protection in industrial and commercial electrical distribution systems.
• Provides a four-pole switching arrangement for applications requiring the corresponding circuit configuration.
• Designed for integration into compatible ABB electrical distribution assemblies.
• Suitable for professional electrical panel building and switchgear applications.
• ABB order code 1SDX255146R1 enables accurate product identification, specification and procurement.

Key Features

• ABB Protecta Power Devices product group.
• EPX-XT2S-E1-1604 manufacturer product designation.
• ABB order code 1SDX255146R1.
• Moulded case circuit breaker (MCCB) construction.
• XT2S breaker designation.
• 160 A rated current.
• 4-pole configuration.
• 50 kA specified breaking capacity.
• E1 designation within the manufacturer model reference.
• LS/I overcurrent protection arrangement.
• Long-time protection for sustained overload conditions.
• Short-time and instantaneous protection functions for short-circuit conditions.
• Designed for compatible low-voltage electrical distribution boards and switchgear assemblies.

Technical Specifications

• Manufacturer: ABB
• Product group: Protecta Power Devices
• Model: EPX-XT2S-E1-1604
• ABB order code: 1SDX255146R1
• Product designation: EPX-XT2S-E1-1604 160A 4P 50kA MCCB - LS/I
• Product type: Moulded case circuit breaker (MCCB)
• Product category: Low-voltage circuit protection devices
• Breaker designation: XT2S
• Model protection designation: E1
• Rated current: 160 A
• Number of poles: 4
• Specified breaking capacity: 50 kA
• Protection designation: LS/I
• Long-time protection: L
• Short-time protection: S
• Instantaneous protection: I
• Electrical application: Low-voltage overcurrent and short-circuit protection
• Typical system arrangement: Appropriately designed three-phase, four-wire distribution circuits
• Installation application: Compatible electrical distribution boards and switchgear assemblies
• Suitable for: Appropriately configured ABB Protecta Power distribution systems
• Product classification: 160 A 4-pole MCCB with LS/I protection

160A Four-Pole MCCB Protection with LS/I Functions and 50kA Breaking Capacity

Industrial and commercial electrical distribution systems require protective devices capable of responding to overloads and short-circuit faults while supporting the coordination of upstream and downstream equipment. The ABB EPX-XT2S-E1-1604 provides a 160 A, four-pole MCCB configuration with LS/I overcurrent protection for appropriately engineered low-voltage installations.

The LS/I protection designation identifies three overcurrent protection functions. Long-time (L) protection addresses sustained overload conditions, short-time (S) protection addresses short-circuit currents over a defined response period, and instantaneous (I) protection provides rapid operation for sufficiently high fault currents. The exact operating characteristics, available adjustments and protection curves must be confirmed using the relevant ABB product documentation.

The four-pole configuration is relevant to three-phase, four-wire electrical systems where the installation design requires a fourth switched pole. The precise neutral-pole switching and protection characteristics must be verified before selection. A four-pole designation does not, by itself, establish whether the neutral pole has identical protection characteristics to the phase poles.

The specified 50 kA breaking capacity is an important consideration when assessing suitability for an electrical distribution installation. The prospective short-circuit current at the point of installation must be established, and the applicable breaking-capacity rating must be checked against the intended operating voltage and ABB technical data. The stated 50 kA value should not be assumed to apply identically at every system voltage.

The EPX-XT2S-E1-1604 should be selected with consideration for conductor sizing, circuit loading, protective device coordination, installation conditions and the requirements of the complete distribution assembly. Applicable requirements of BS EN IEC 60947-2 should be considered for circuit breaker selection, while any relevant BS EN IEC 61439 compliance must be established for the complete verified switchgear assembly rather than assumed from an individual MCCB.

Typical Applications

• ABB Protecta Power electrical distribution assemblies.
• Industrial low-voltage electrical distribution boards.
• Commercial building three-phase power distribution systems.
• Four-pole feeder circuit protection where the configuration is appropriate.
• Electrical panel boards and switchgear assemblies.
• Manufacturing plant electrical distribution installations.
• Electrical plant rooms and power distribution equipment.
• Infrastructure and commercial electrical installations requiring coordinated overcurrent protection.
• OEM electrical panel building and switchboard manufacturing.
• Electrical distribution upgrades and compatible MCCB replacement projects.