1SDA123207R1 ABB EPX-A1C-100L2 Protecta Power 100A 1-Pole A1N125 MCCB with L2 Load-Side Connection

Why Choose the ABB EPX-A1C-100L2 100A Single-Pole MCCB?

The ABB EPX-A1C-100L2 is a 100 A single-pole moulded case circuit breaker (MCCB) assembly designed for outgoing circuit protection within compatible ABB Protecta Power electrical distribution panelboards. Based on the ABB Formula A1N125 circuit breaker platform, this device combines thermal-magnetic protection with an L2-position load-side connection (LSC) arrangement for integration into the Protecta Power distribution system.

Part of the ABB Protecta Power Devices product group, the EPX-A1C-100L2 is identified by ABB order code 1SDA123207R1. Its manufacturer product description is EPX-A1C-100L2 A1N125 100A 1p+ LSC L2 TMA. The assembly is intended for applications requiring a manufacturer-specified 100 A outgoing protective device with a single-pole configuration and a dedicated L2 connection position.

ABB's Protecta Power product information lists the corresponding 100 A single-pole Formula A1N125 outgoing MCCB within its 25 kA thermal-magnetic circuit breaker range. The EPX-A1C-100L2 is specifically designated for the L2 phase position, with related L1 and L3 variants available for other outgoing connection arrangements. This allows electrical contractors and panel builders to select the correct circuit breaker configuration for the intended Protecta Power assembly.

Key Advantages

• Purpose-designed 100 A outgoing MCCB for compatible ABB Protecta Power panelboards.
• Uses the established ABB Formula A1N125 circuit breaker platform.
• Single-pole (1P) configuration for suitable phase conductor protection applications.
• Provides thermal-magnetic overload and short-circuit protection.
• 25 kA breaking capacity identified for the corresponding A1N125 outgoing device in ABB's Protecta Power selection information.
• L2-specific connection arrangement for the appropriate outgoing circuit position.
• Includes the specified LSC load-side connection arrangement.
• Combines a manufacturer-selected protective device with its designated connection configuration.
• Supports coordinated circuit protection within commercial and industrial low-voltage distribution systems.
• Suitable for outgoing circuits requiring a correctly specified 100 A protective device.
• Part of ABB's wider Protecta Power range of single-pole outgoing MCCBs.
• Related L1 and L3 variants are available for alternative phase positions.
• Clearly identified by ABB order code 1SDA123207R1 for accurate specification and procurement.

Key Features

• ABB Protecta Power Devices product family.
• EPX-A1C-100L2 outgoing circuit breaker assembly.
• 100 A rated current.
• Single-pole (1P) circuit breaker configuration.
• ABB Formula A1N125 device platform.
• 125 A frame family with a 100 A protective device rating.
• Thermal-magnetic protection technology.
• TMA trip designation in the manufacturer product description.
• Thermal protection against sustained overload conditions.
• Magnetic protection against short-circuit fault conditions.
• 25 kA breaking capacity listed for the corresponding A1N125 outgoing device range.
• L2 connection position.
• LSC load-side connection arrangement.
• Designed for compatible ABB Protecta Power outgoing distribution ways.
• ABB lists a maximum cable capacity of 50 mm² for its A1 single-pole outgoing device range, subject to terminal suitability.
• Compatible MCCB base plate and cover required for the completed outgoing installation.
• Related L1 and L3 connection variants available.
• Manufacturer model EPX-A1C-100L2 and ABB order code 1SDA123207R1.

100A Thermal-Magnetic Protection with a 25kA Breaking Capacity

The ABB EPX-A1C-100L2 is designed for outgoing electrical circuits requiring a 100 A protective device within a compatible Protecta Power distribution assembly. Its Formula A1N125 platform provides thermal-magnetic protection, combining overload and short-circuit response in a single moulded case circuit breaker. The device must be selected according to the electrical design, including the intended load, conductor characteristics and prospective fault current.

The thermal protection element responds to sustained overcurrent conditions associated with circuit overloads. The magnetic protection element responds to higher fault currents associated with short circuits. Together, these functions provide protective operation when the MCCB is correctly selected, installed and coordinated with the electrical system.

ABB's Protecta Power selection information identifies the 100 A single-pole A1N125 outgoing MCCB within its 25 kA breaking capacity range. This rating must be considered in relation to the applicable operating voltage, prospective short-circuit current and the device's documented electrical characteristics. A suitable breaking capacity is essential to ensure that the selected circuit breaker can safely interrupt the fault current expected at its installation position.

The manufacturer product description includes the TMA designation, identifying the specified thermal-magnetic trip arrangement. ABB's Protecta Power technical information describes TMA protection with thermal adjustment from 0.7 to 1 × In and magnetic adjustment from 5 to 10 × In for applicable devices. However, the actual adjustment facilities and operating characteristics of the supplied EPX-A1C-100L2 must be verified against its specific device documentation before any protection settings are determined.

Although the device belongs to the A1N125 125 A frame family, the EPX-A1C-100L2 is a 100 A rated MCCB. The frame size identifies the wider device platform and does not change the rated current of this particular product. Circuit loading, conductor sizing, overload protection and protective coordination must therefore be based on the actual 100 A device and its documented trip characteristics.

L2 Load-Side Connection and Protecta Power Installation

The L2 designation identifies the specified connection position for this outgoing MCCB assembly. ABB also lists the EPX-A1C-100L1 and EPX-A1C-100L3 as corresponding 100 A single-pole variants for the L1 and L3 positions. These are distinct manufacturer references and must be selected according to the intended outgoing way and the panelboard's approved connection arrangement.

The product description also includes LSC, referring to the associated load-side connection arrangement. This forms part of the manufacturer-defined outgoing device configuration. Correct installation requires suitable mechanical mounting, electrical contact, conductor termination and protective covering within the distribution assembly.

ABB's Protecta Power selection information states that an MCCB base plate and cover are required with each outgoing device. These accessories provide the necessary mounting and front-cover arrangement for the completed panelboard installation. The correct components must be selected for the actual outgoing MCCB and distribution assembly, and their inclusion in any supply package should be confirmed before ordering.

For the A1 single-pole outgoing device range, ABB lists a maximum cable capacity of 50 mm². This is a manufacturer selection-guide value rather than a universal conductor recommendation. The actual cable size must be determined according to the 100 A circuit requirements, installation method, current-carrying capacity, voltage drop, fault protection and the suitability of the device terminals.

Related ABB Protecta Power outgoing devices include the EPX-A1C-080L2 rated at 80 A and the EPX-A1C-125L2 rated at 125 A. These provide alternative current ratings for compatible L2 outgoing positions. The correct model should always be selected from the electrical design rather than substituted solely because it belongs to the same physical device family.

Typical Applications

• ABB Protecta Power outgoing circuit protection installations.
• 100 A single-pole MCCB arrangements in compatible distribution panelboards.
• Commercial building low-voltage electrical distribution systems.
• Industrial electrical distribution assemblies requiring suitably rated outgoing protection.
• Single-phase outgoing circuits within appropriately designed three-phase distribution systems.
• Electrical panelboards requiring an L2-position outgoing protective device.
• Circuits requiring thermal-magnetic overload and short-circuit protection.
• Distribution systems where a suitably rated 25 kA outgoing MCCB is specified.
• Electrical switchrooms and building services distribution installations.
• Switchboard manufacturing and electrical panel-building projects.
• Compatible Protecta Power panelboard extensions and circuit additions.
• Replacement of a correctly matched ABB Protecta Power outgoing protective device.