Introduction – Schneider MasterPact NW25N2 Air Circuit Breaker

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

The NW25 frame belongs to the 2500 A class and is intended for demanding power distribution applications. Different configurations within the MasterPact NW family offer varying interrupting capacities and installation arrangements, allowing equipment to be selected according to the electrical requirements of each project.

For the NW25N2 reference, model verification is particularly important. Schneider's published selection information identifies NW25H1, NW25H2, and NW25H3 configurations rather than clearly establishing NW25N2 as a standard catalog model. Confirm the complete product reference and nameplate details before ordering or arranging a replacement.

Technical Specifications – Product Data and Dimensions

Parameter	Specification
Brand	Schneider Electric
Product Series	MasterPact NW
Model Reference	NW25N2
Product Type	Air Circuit Breaker
Frame Class	NW25 (2500 A)
Dimensions (W × H × 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 NW25N2 designation and its exact electrical configuration should be confirmed against the product nameplate and complete Schneider catalog reference.

Recommended Related Models – Schneider MasterPact NW25 Range

The following NW25 references are documented performance variants that can be considered when comparing electrical requirements.

Model	Product Type	Frame Class
NW25H1	Air Circuit Breaker	2500 A
NW25H2	Air Circuit Breaker	2500 A
NW25H3	Air Circuit Breaker	2500 A

These versions have different short-circuit interrupting capabilities. Selection should be based on the system voltage and prospective fault current.

Popular Related Models – MasterPact NW Circuit Breakers

NW25H1 – A 2500 A frame circuit breaker for high-capacity power distribution applications.
NW25H2 – An NW25 configuration with a higher interrupting-performance category than H1.
NW25H3 – An NW25 variant designed for applications requiring a higher short-circuit interrupting capacity.
NW20H1 – A 2000 A frame option for comparatively lower-current distribution systems.
NW32H1 – A 3200 A frame option for higher-current power distribution applications.

When selecting a replacement, compare the complete catalog reference, rated voltage, breaking capacity, trip-unit functions, mounting arrangement, and accessories. These models should not be treated as interchangeable based on frame size alone.

Applications – High-Capacity Low-Voltage Power Distribution

The Schneider MasterPact NW25 series is designed for high-capacity low-voltage power distribution systems. It is used in industrial facilities, commercial buildings, and infrastructure projects where reliable switching and electrical protection are essential.

Typical application areas include:

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

When selecting a circuit breaker, engineers should consider rated current, operating voltage, short-circuit capacity, and coordination with upstream and downstream protective devices.

Advantages – Protection and Switchboard Integration

High-current distribution: The MasterPact NW25 frame belongs to the 2500 A class.
Overload protection: Compatible electronic trip units provide adjustable protection against sustained overcurrent.
Short-circuit protection: The appropriate breaker configuration can interrupt fault currents within its specified breaking capacity.
Flexible installation: The MasterPact NW family supports different mounting arrangements, depending on the selected version.
Protection coordination: Adjustable trip characteristics help coordinate protection across electrical distribution networks.
Accessory integration: Compatible configurations can support auxiliary contacts, operating mechanisms, and control accessories.

Technical FAQs – Configuration, Operation and Maintenance

Q1: What is the Schneider NW25N2 used for?

It is provided as an NW25 circuit-breaker reference for high-capacity low-voltage power distribution. The exact catalog designation should be verified before ordering.

Q2: What does the NW25 designation represent?

NW25 identifies the 2500 A frame class in the MasterPact NW family.

Q3: Is NW25N2 an officially listed Schneider model?

The exact NW25N2 designation is not confirmed in the Schneider MasterPact NW selection information. The 2500 A frame range includes H1, H2, and H3 performance versions in the relevant catalog. Buyers should check the product nameplate and complete catalog number before purchasing.

Q4: What protection functions are available?

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

Q5: Can the NW25 series interrupt short-circuit currents?

Yes. The selected breaker must have a suitable breaking capacity for the installation's operating voltage and prospective fault current.

Q6: How should a compatible trip unit be selected?

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

Q7: Is the NW25 available in fixed and drawout configurations?

The MasterPact NW family includes different installation arrangements. Confirm the actual construction before selecting mounting accessories or planning installation.

Q8: Can auxiliary contacts and remote-control accessories be installed?

Compatible accessories are available for applicable MasterPact NW configurations. Their suitability depends on the breaker version and operating mechanism.

Q9: What maintenance checks are recommended?

Follow the manufacturer's maintenance instructions. Typical inspections include electrical connections, contact condition, operating mechanisms, trip-unit functions, and auxiliary circuits.

Q10: What should be checked before replacing an existing NW25 breaker?

Verify the complete catalog number, rated current, operating voltage, breaking capacity, pole arrangement, mounting construction, terminal connections, trip unit, and accessories. Similar model designations do not guarantee interchangeability.

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