Introduction – Schneider MasterPact NW12N2 Air Circuit Breaker

The Schneider MasterPact NW series is developed for low-voltage distribution systems that require dependable circuit protection and switching capabilities. These air circuit breakers are used in industrial and commercial installations to protect electrical circuits and connected equipment against overloads and short circuits.

The NW12 frame belongs to the 1250 A class, making it relevant to substantial power distribution applications. Different configurations within the MasterPact NW family allow equipment selection according to electrical performance, installation requirements, and operating conditions.

For the NW12N2 reference, model verification is particularly important. Buyers should compare the complete catalog number and nameplate information with the required electrical specifications before placing an order or arranging a replacement.

Technical Specifications – Product Data and Dimensions

Parameter	Specification
Brand	Schneider Electric
Product Series	MasterPact NW
Model Reference	NW12N2
Product Type	Air Circuit Breaker
Frame Class	NW12 (1250 A)
Dimensions (H × W × D)	352 × 537 × 297 mm
Weight	65 kg (143.30 lb)
Application	Low-voltage power distribution and circuit protection

Dimensions and weight are based on the supplied product information. The exact NW12N2 catalog designation, electrical ratings, and mounting configuration should be confirmed against the product nameplate.

Recommended Related Models – Schneider MasterPact NW12 Range

The following NW12 references are useful for comparing different interrupting-performance categories. Confirm their availability and exact catalog configurations before ordering.

Model	Product Type	Frame Class
NW12N1	Air Circuit Breaker	1250 A
NW12H1	Air Circuit Breaker	1250 A
NW12H2	Air Circuit Breaker	1250 A

These variants have different electrical performance characteristics and should not be treated as interchangeable without checking the system's fault-current requirements.

Popular Related Models – MasterPact NW Circuit Breakers

NW12N1 – A 1250 A frame circuit-breaker reference for low-voltage distribution applications.
NW12H1 – An NW12 variant with a different interrupting-performance category.
NW12H2 – An NW12 configuration for applications with different short-circuit requirements.
NW10N1 – A 1000 A frame model for comparatively lower-current distribution systems.
NW16N1 – A 1600 A frame model for higher-current distribution applications.

When selecting a replacement, always compare the complete catalog reference, rated voltage, breaking capacity, trip-unit functions, mounting arrangement, and accessories. Similar model numbers alone do not establish compatibility.

Applications – Industrial and Commercial Power Distribution

The Schneider MasterPact NW12 series is designed for low-voltage power distribution systems requiring reliable circuit protection and switching performance. It is suitable for electrical installations where operational safety, fault protection, and effective power management are essential.

Typical application areas include:

Main low-voltage distribution switchboards
Industrial manufacturing facilities
Commercial building electrical systems
Power distribution centers
Infrastructure and utility-related electrical installations
Electrical systems requiring coordinated circuit protection

The selection of a suitable breaker should consider rated current, operating voltage, prospective short-circuit current, and coordination with other protective devices.

Advantages – Protection Performance and Installation Flexibility

High-current distribution: The NW12 frame belongs to the 1250 A class of the MasterPact NW family.
Overload protection: Compatible electronic trip units provide configurable protection against sustained overcurrent.
Short-circuit protection: The appropriate breaker version can interrupt fault currents within its specified breaking capacity.
Flexible installation: The MasterPact NW family offers different mounting arrangements, depending on the selected configuration.
Protection coordination: Adjustable trip settings help coordinate protection across different levels of an electrical network.
Accessory support: Applicable configurations can accommodate auxiliary contacts, operating mechanisms, and control accessories.

Technical FAQs – Selection, Installation and Operation

Q1: What is the main function of the Schneider NW12N2?

It is presented as a MasterPact NW12 circuit-breaker reference for low-voltage power distribution and circuit protection. Confirm the complete catalog number before purchasing.

Q2: What does the NW12 designation represent?

NW12 identifies the 1250 A frame class within the MasterPact NW family. The actual rated current depends on the specific breaker configuration and installed components.

Q3: Is NW12N2 an officially listed Schneider model?

The exact NW12N2 designation should be verified against Schneider Electric's catalog information and the product nameplate. Do not assume that a similar-looking suffix represents a standard orderable version.

Q4: What protection functions are available?

Depending on the trip-unit configuration, MasterPact NW circuit breakers can provide long-time, short-time, instantaneous, and other protection functions.

Q5: Can the NW12 series interrupt short-circuit currents?

Yes. The appropriate circuit-breaker version can interrupt fault currents within its specified breaking capacity at the applicable operating voltage.

Q6: What should be checked when selecting a trip unit?

Check the sensor rating, rated current, protection functions, adjustable settings, system voltage, and coordination requirements. The trip unit must be compatible with the breaker.

Q7: Is the MasterPact NW12 available in fixed and drawout versions?

The MasterPact NW family includes different installation arrangements. Confirm the exact construction of the individual unit before selecting accessories or planning installation.

Q8: Can the breaker support remote operation?

Remote operation depends on the operating mechanism and compatible control accessories installed on the specific breaker.

Q9: What maintenance is recommended for the NW12 series?

Follow Schneider Electric's maintenance instructions. Inspection should cover electrical connections, contact condition, operating mechanisms, trip-unit functions, and auxiliary circuits.

Q10: Can NW12N2 replace another NW12 circuit breaker?

Not automatically. Verify the complete catalog reference, rated voltage, breaking capacity, pole arrangement, mounting construction, terminal connections, trip unit, and accessories before replacement.

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