1SDA123195R1 ABB EPX-A1B-016L2 Protecta Power 16A 1-Pole A1C125 Thermal Magnetic MCCB with LSC L2

Why Choose the ABB EPX-A1B-016L2 16A Single-Pole Thermal-Magnetic MCCB?

The ABB EPX-A1B-016L2 is a 16 A single-pole moulded case circuit breaker (MCCB) supplied with an LSC L2 connection arrangement for compatible ABB Protecta Power electrical distribution panelboards. Identified by ABB order code 1SDA123195R1, this device forms part of the Protecta Power Devices product group and provides a dedicated outgoing circuit protection solution for suitable low-voltage distribution assemblies.

Based on the ABB Formula A1C125 circuit breaker platform, the EPX-A1B-016L2 uses thermal-magnetic protection to respond to overload and short-circuit conditions. Its 16 A current rating and single-pole (1P) configuration make it suitable for appropriately designed outgoing circuits where a compact MCCB-based protection arrangement is required.

The L2 designation identifies the specified connection variant within ABB's Protecta Power single-pole outgoing device range. ABB also lists corresponding L1 and L3 variants, allowing the correct version to be selected for the intended panelboard connection position. The EPX-A1B-016L2 combines the specified circuit breaker with its associated LSC arrangement, supporting coordinated integration into compatible Protecta Power distribution equipment.

Key Advantages

• Purpose-designed 16 A outgoing MCCB for compatible ABB Protecta Power panelboards.
• Single-pole (1P) configuration for appropriate individual circuit protection applications.
• Based on the ABB Formula A1C125 circuit breaker platform.
• Uses thermal-magnetic protection for overload and short-circuit conditions.
• Specified with an LSC L2 connection arrangement for the corresponding Protecta Power position.
• Provides automatic overcurrent tripping and manual circuit switching functionality.
• Supports a coordinated outgoing circuit arrangement using ABB protective devices.
• 18 kA breaking-capacity classification identified for the 16 A single-pole A1 device in ABB's Protecta Power selection literature, subject to the stated test voltage and applicable device specification.
• Suitable for professional commercial and industrial electrical distribution assemblies.
• Helps distinguish the required L2 version from the corresponding L1 and L3 variants.
• Supports panelboard construction, circuit replacement and compatible refurbishment work.
• Genuine ABB product with manufacturer order code 1SDA123195R1.

Key Features

• ABB Protecta Power Devices product group.
• EPX-A1B-016L2 product reference.
• 16 A rated current.
• One-pole (1P) circuit breaker configuration.
• ABB Formula A1C125 device family.
• 125 A frame family, with a 16 A device rating.
• Thermal-magnetic overcurrent protection.
• Thermal response to sustained overload conditions.
• Magnetic response to short-circuit conditions.
• LSC L2 connection variant.
• Designed for compatible ABB Protecta Power outgoing circuit positions.
• Part of an outgoing device range offering L1, L2 and L3 variants.
• Manual switching with automatic protective tripping.
• Suitable for integration with the appropriate outgoing device mounting and cover components.
• Manufacturer order code 1SDA123195R1.

Dependable 16A Outgoing Circuit Protection for ABB Protecta Power Panelboards

Outgoing circuit breakers are essential components of a low-voltage distribution panelboard. Each outgoing protective device must be selected to suit the connected circuit, conductor characteristics and available fault level. The ABB EPX-A1B-016L2 provides a 16 A single-pole MCCB solution for compatible Protecta Power assemblies, allowing the specified outgoing circuit to be protected using ABB's Formula A1 device platform.

The product's thermal-magnetic protection arrangement provides two complementary functions. The thermal element responds to sustained overcurrent conditions that may otherwise cause excessive conductor heating, while the magnetic element responds to sufficiently high short-circuit currents. These functions help protect the outgoing circuit when the breaker is correctly selected and installed in accordance with the manufacturer's instructions.

The A1C125 designation identifies the Formula circuit breaker family, while the 16 A rating identifies the current rating of this particular device. The 125 A frame designation must not be confused with the 16 A circuit breaker rating. The device should be selected according to its actual protective characteristics and the requirements of the outgoing circuit.

ABB's Protecta Power selection literature identifies the 16 A single-pole A1 outgoing MCCB as an 18 kA device. The applicable short-circuit breaking capacity must nevertheless be checked at the installation's operating voltage and against the exact device documentation. A circuit breaker must have adequate breaking capacity for the prospective fault current at its installed position, unless an approved coordinated protection arrangement permits otherwise.

The LSC L2 designation is important when specifying the correct outgoing device variant. ABB lists the corresponding EPX-A1B-016L1, EPX-A1B-016L2 and EPX-A1B-016L3 references within its Protecta Power single-pole outgoing range. These variants should not be treated as interchangeable without checking the required connection arrangement and panelboard configuration.

For the Protecta Power outgoing MCCB system, ABB specifies that an MCCB base plate and cover are required with each outgoing device. The EPX-A1B-016L2 should therefore be considered part of a complete outgoing circuit assembly rather than a fully installed, standalone distribution solution. The correct mounting accessories, covers and any additional connection components must be confirmed against the selected panelboard.

ABB's published Protecta Power selection information identifies a maximum cable capacity of 50 mm² for A1 single-pole devices. This is a product-range connection limit rather than a recommended conductor size for a 16 A circuit. The actual cable cross-section must be determined from the load, installation method, protective device characteristics, terminal compatibility and applicable wiring regulations.

The EPX-A1B-016L2 is particularly relevant where a project requires a 16 A outgoing MCCB with the L2 connection variant. Correct selection supports consistent panelboard construction and helps avoid ordering an otherwise similar device with the wrong connection designation. Installation and commissioning should be carried out by competent electrical personnel using the current ABB technical documentation.

Typical Applications

• ABB Protecta Power outgoing electrical distribution circuits.
• 16 A single-pole MCCB protection in compatible panelboards.
• Protecta Power assemblies requiring the LSC L2 connection variant.
• Commercial building low-voltage distribution systems.
• Industrial electrical distribution panelboards.
• Individual outgoing circuits requiring appropriately specified overcurrent protection.
• Office and retail electrical distribution installations.
• Warehouses and logistics facilities.
• Manufacturing and light industrial premises.
• Educational and institutional building distribution systems.
• Electrical switchrooms and sub-distribution assemblies.
• Professional electrical panel building and switchgear manufacturing.
• Compatible outgoing circuit breaker replacement projects.
• Protecta Power panelboard refurbishment and expansion work.