Product Introduction

The Schneider NW08N1 is part of the Masterpact NW family of low-voltage air circuit breakers. With an 800 A frame rating and N1 performance classification, it is designed for power distribution systems that require dependable circuit protection and switching capabilities.

The breaker is used in industrial switchgear, commercial electrical installations, and other power distribution environments. Depending on the selected configuration, it can be supplied with different pole arrangements and mounting options. Compatible control and protection units provide the functions required for the specific electrical installation.

When purchasing this model, it is important to distinguish between fixed and drawout versions and to confirm whether the breaker includes a trip unit. Matching these details with the existing switchboard helps reduce installation and replacement risks.

Technical Specifications

Parameter	Description
Brand	Schneider Electric
Model	NW08N1
Product Name	Masterpact NW Circuit Breaker
Product Type	Air Circuit Breaker (ACB)
Product Family	Masterpact NW
Frame Rating	800 A
Performance Category	N1
Rated Operational Voltage	Up to 690 V AC, depending on configuration
Rated Ultimate Short-Circuit Breaking Capacity	42 kA at specified voltage levels
Application	Low-voltage power distribution protection
Mounting Options	Fixed or drawout, depending on reference
Pole Configuration	3P or 4P, depending on reference
Dimensions (W × H × D)	537 × 352 × 297 mm
Weight	65 kg / 143.30 lb

Note: Confirm the complete ordering reference, pole configuration, mounting type, and control-unit arrangement before ordering. Product dimensions and weight may vary between configurations.

Recommended Related Models

The following Schneider Electric Masterpact NW models are useful for comparing different breaking-capacity levels and frame ratings:

Schneider NW08H1: 800 A frame with H1 performance.
Schneider NW08H2: 800 A frame with H2 performance.
Schneider NW08H3: 800 A frame with H3 performance.
Schneider NW10N1: 1000 A frame with N1 performance.

These models belong to the same general product family, but differences in ratings and configurations mean they should not be treated as direct replacements without verification.

Popular Related Models

Other Masterpact NW circuit breaker references commonly considered for industrial power distribution include:

Schneider NW08N1 Circuit Breaker
Schneider NW08H1 Circuit Breaker
Schneider NW12N1 Circuit Breaker
Schneider NW16N1 Circuit Breaker
Schneider NW20H1 Circuit Breaker
Schneider NW32H1 Circuit Breaker

The Schneider NW08N1 is a practical option for projects requiring an 800 A Masterpact NW circuit breaker. For purchasing, maintenance, or replacement, confirm the complete model reference and configuration to ensure that the selected equipment matches the electrical and mechanical requirements of the installation.

Applications

The Schneider NW08N1 is an 800 A Masterpact NW air circuit breaker designed for low-voltage power distribution protection. It is suitable for electrical systems that require reliable switching, fault interruption, and coordinated protection in industrial and commercial installations.

Typical applications include:

Industrial power distribution: Protects incoming feeders and distribution circuits in manufacturing plants and processing facilities.
Commercial buildings: Supports main and sub-distribution systems in large commercial properties.
Electrical switchgear: Integrates into low-voltage switchboards and power distribution assemblies.
Infrastructure facilities: Provides circuit protection for electrical systems in transportation and public infrastructure.
Power management systems: Supports reliable distribution and isolation of electrical circuits in high-demand installations.

Advantages and Key Features

800 A frame rating

The NW08N1 belongs to the 800 A frame category, making it suitable for high-current low-voltage distribution applications.

N1 breaking performance

The N1 performance category provides a rated ultimate short-circuit breaking capacity of 42 kA at specified operating voltages. Actual application suitability must be checked against the system's prospective fault current.

Flexible installation configurations

The Masterpact NW range is available in different mounting and pole configurations. The correct version should be selected according to the switchboard design and installation requirements.

Protection system compatibility

The breaker can be configured with compatible control and protection units. The selected trip unit and sensor rating determine the available protection functions and settings.

Designed for professional switchgear

Its construction and accessory options support integration into industrial power distribution systems, helping electrical engineers configure equipment for specific operating requirements.

Technical FAQs

Q1: What is the Schneider NW08N1 used for?

The NW08N1 is an air circuit breaker used to protect low-voltage power distribution circuits against overloads and short circuits when equipped with the appropriate protection unit.

Q2: What is the rated current of the NW08N1?

The NW08N1 has an 800 A frame rating. The applicable sensor rating and protection settings depend on the selected configuration.

Q3: What does the N1 designation mean?

N1 identifies the breaker’s performance category. The published interrupting rating for this model is 42 kA at specified voltage levels, including 440 V AC.

Q4: What is the rated operational voltage?

The NW08N1 product configuration supports a rated operational voltage of up to 690 V AC at 50/60 Hz. Always verify the specific product reference and applicable ratings before installation.

Q5: Does the NW08N1 include a trip unit?

Some product references are supplied without a control unit. For example, certain NW08N1 configurations are basic breaker frames without a trip unit. Confirm the complete ordering reference before purchasing.

Q6: Is the NW08N1 available in fixed and drawout versions?

Yes. Masterpact NW08N1 configurations include fixed-mounted and drawout versions. These versions have different installation requirements and should not be assumed to be mechanically interchangeable.

Q7: Can the NW08N1 be used in a three-phase distribution system?

Yes. Three-pole configurations are suitable for compatible three-phase applications. Four-pole versions are also available in certain configurations. Select the pole arrangement according to the electrical system design.

Q8: What should be checked when replacing an existing NW08N1?

Check the complete model reference, pole count, mounting arrangement, rated voltage, control unit, sensor rating, terminal connections, and installed accessories. These details are essential for confirming replacement compatibility.

Q9: What may cause the breaker to trip unexpectedly?

Possible causes include circuit overload, short-circuit faults, incorrect protection settings, wiring problems, or abnormal operating conditions. Check the trip indication and investigate the connected circuit before resetting the breaker.

Q10: Can the NW08N1 be replaced with an NW08H1?

Not automatically. Both belong to the NW08 frame range, but their interrupting performance differs. The NW08H1 has a higher breaking-capacity category than the NW08N1. Any replacement must be checked against system fault levels, electrical ratings, and switchgear compatibility.