Introduction – Schneider MasterPact NW20N2 Air Circuit Breaker

The Schneider MasterPact NW series is designed for low-voltage power distribution systems that require reliable circuit protection and switching performance. These air circuit breakers help protect electrical installations against overloads and short circuits when equipped with the appropriate trip unit.

The NW20 frame belongs to the 2000 A class and is used in high-capacity distribution applications. Depending on the selected version, the breaker can be integrated into different switchboard arrangements to meet electrical and operational requirements.

When sourcing the NW20N2 reference, model identification deserves particular attention. Schneider's published selection information includes NW20N1 and several H-series variants, but does not clearly confirm NW20N2. Buyers should verify the nameplate and complete catalog number before purchasing or arranging a replacement.

Technical Specifications – Product Data and Dimensions

Parameter	Specification
Brand	Schneider Electric
Product Series	MasterPact NW
Model Reference	NW20N2
Product Type	Air Circuit Breaker
Frame Class	NW20 (2000 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. Confirm the exact model designation, pole configuration, mounting arrangement, and electrical ratings against the product nameplate before ordering.

Recommended Related Models – Schneider MasterPact NW20 Range

The following documented MasterPact NW20 references provide alternatives for comparing electrical performance.

Model	Product Type	Frame Class
NW20N1	Air Circuit Breaker	2000 A
NW20H1	Air Circuit Breaker	2000 A
NW20H2	Air Circuit Breaker	2000 A
NW20H3	Air Circuit Breaker	2000 A

The variants have different interrupting capabilities. Selection must match the system's operating voltage and prospective short-circuit current.

Popular Related Models – MasterPact NW Circuit Breakers

NW20N1 – A 2000 A frame circuit breaker with an N1 performance designation.
NW20H1 – A 2000 A version with H1 interrupting performance.
NW20H2 – An NW20 variant with a higher interrupting-performance category than H1.
NW20H3 – An NW20 option for applications with different short-circuit requirements.
NW16N1 – A related 1600 A frame model for comparatively lower-current distribution systems.

Before selecting a replacement, compare the complete catalog number, rated voltage, interrupting capacity, trip-unit functions, pole arrangement, and mounting configuration. These models should not be treated as interchangeable based on frame designation alone.

Applications – Low-Voltage Power Distribution and Circuit Protection

The Schneider MasterPact NW20 series is designed for high-capacity low-voltage power distribution systems. It is used in industrial plants, commercial facilities, and infrastructure installations where dependable circuit protection and controlled power distribution are required.

Typical application areas include:

Main low-voltage distribution switchboards
Industrial power distribution systems
Commercial building electrical installations
Power distribution centers
Large electrical equipment rooms
Systems requiring coordinated overload and short-circuit protection

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

Advantages – Protection Performance and System Integration

High-current application: The MasterPact NW20 frame is associated with the 2000 A class.
Overload protection: Compatible electronic trip units can provide adjustable protection against sustained overcurrent.
Short-circuit protection: The appropriate breaker configuration can interrupt fault currents within its specified breaking capacity.
Switchboard integration: The MasterPact NW family offers different installation arrangements, depending on the selected version.
Protection coordination: Adjustable trip settings support coordination with upstream and downstream protective devices.
Accessory options: Compatible configurations can support auxiliary contacts, operating mechanisms, and control accessories.

Technical FAQs – Selection, Protection and Maintenance

Q1: What is the Schneider NW20N2 used for?

It is provided as a MasterPact NW20 circuit-breaker reference for low-voltage power distribution. The exact catalog designation should be verified before ordering.

Q2: What does the NW20 frame designation represent?

NW20 identifies the 2000 A frame class in the MasterPact NW family. The actual rated current depends on the selected breaker configuration.

Q3: Is NW20N2 a standard Schneider Electric model?

The Schneider selection information identifies NW20N1 and performance variants such as NW20H1, NW20H2, and NW20H3. It does not clearly establish NW20N2 as a standard catalog reference. Check the nameplate and complete catalog number before purchase.

Q4: What protection functions can the MasterPact NW20 provide?

Depending on the installed trip unit, the breaker can provide long-time, short-time, instantaneous, and other protection functions.

Q5: Can the NW20 series interrupt short-circuit currents?

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

Q6: How should the 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 MasterPact NW20 available in fixed and drawout versions?

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

Q8: Can the breaker support remote operation?

Remote operation depends on the installed operating mechanism and compatible control accessories. Confirm the required configuration before installation.

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 NW20 circuit breaker?

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

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