Introduction

When electrical distribution systems operate under substantial loads, selecting a circuit breaker with the appropriate current rating and fault-interruption capability is essential. The Schneider Electric NW32H1 Circuit Breaker addresses these requirements as part of the MasterPact NW low-voltage air circuit breaker family.

Rated at 3200 A, the NW32H1 is designed for large-scale power distribution applications. Its H1 breaking-capacity classification provides 65 kA of rated ultimate short-circuit breaking capacity at 440 V AC, supporting its use in industrial switchboards, main distribution panels, and other demanding electrical installations.

A key feature of the MasterPact NW platform is its configurable design. Depending on the complete product reference, the NW32H1 can be supplied in fixed or drawout configurations and integrated with compatible MicroLogic protection units and auxiliary accessories. This flexibility allows electrical engineers and system integrators to select an arrangement that meets specific installation requirements.

The breaker is particularly relevant to industrial facilities, switchgear manufacturers, electrical contractors, and maintenance teams responsible for high-capacity distribution equipment. Its established product platform also makes it an attractive option for replacement projects where compatibility with existing electrical infrastructure is a priority.

For international buyers, confirming the complete reference number is important because different NW32H1 configurations may have different pole arrangements, mounting methods, protection units, and accessory combinations.

Choosing the appropriate NW32H1 configuration helps support dependable power distribution, effective circuit protection, and long-term equipment management.

Technical Specifications

The following specifications describe the Schneider NW32H1 3200 A, three-pole drawout configuration corresponding to the supplied dimensions and weight.

Parameter	Specification
Brand	Schneider Electric
Product Series	MasterPact NW
Model Number	NW32H1
Product Type	Air Circuit Breaker
Rated Current	3200 A
Number of Poles	3P
Breaking Capacity Class	H1
Rated Operational Voltage	690 V AC
Rated Frequency	50/60 Hz
Rated Ultimate Breaking Capacity (Icu)	65 kA at 440 V AC
Rated Service Breaking Capacity (Ics)	65 kA at 440 V AC
Short-Time Withstand Current (Icw)	65 kA / 1 s and 3 s
Rated Insulation Voltage (Ui)	1000 V AC
Rated Impulse Withstand Voltage (Uimp)	12 kV
Selectivity Category	Category B
Control Unit	Configuration Dependent
Mounting Type	Drawout
Applicable Standard	IEC 60947-2
Dimensions (H × W × D)	439 × 441 × 395 mm
Net Weight	90 kg
Weight in Pounds	198.42 lb

Configuration note: Dimensions and weight correspond to the supplied product configuration. Other NW32H1 versions, including fixed and four-pole arrangements, may have different physical specifications. Confirm the complete reference before ordering.

Recommended Related Models

For customers considering the NW32H1, other MasterPact NW models may provide suitable alternatives depending on rated current, breaking capacity, and electrical system requirements.

Model	Product Type	Application Focus
Schneider NW25H1	Air Circuit Breaker	2500 A power distribution
Schneider NW32H2	Air Circuit Breaker	3200 A higher breaking-capacity applications
Schneider NW40H1	Air Circuit Breaker	4000 A power distribution
Schneider NW32H3	Air Circuit Breaker	3200 A high fault-current protection
Schneider NW25N1	Air Circuit Breaker	2500 A distribution applications

These models belong to related MasterPact NW product configurations. They should not be considered direct drop-in replacements without checking their electrical ratings, mounting arrangements, and complete references.

Popular Related Models

The following Schneider Electric circuit breaker models are also relevant to industrial power distribution, switchgear maintenance, and electrical equipment replacement projects.

Product Model	Product Description
Schneider NW08N1	MasterPact NW Air Circuit Breaker
Schneider NW10N1	MasterPact NW Air Circuit Breaker
Schneider NW12N1	MasterPact NW Air Circuit Breaker
Schneider NW16N1	MasterPact NW Air Circuit Breaker
Schneider NW20N1	MasterPact NW Air Circuit Breaker
Schneider NW25N1	MasterPact NW Air Circuit Breaker
Schneider NW25H1	MasterPact NW Air Circuit Breaker
Schneider NW32H1	MasterPact NW Air Circuit Breaker
Schneider NW40HA	MasterPact NW Air Circuit Breaker

Schneider NW32H1 Circuit Breaker – Industrial Power Distribution Solution

We offer support for industrial customers, electrical equipment distributors, system integrators, and international procurement teams looking for Schneider Electric MasterPact circuit breakers.

Whether you need the NW32H1 for equipment replacement, switchgear maintenance, or a new electrical distribution project, contact us to discuss product availability, complete model references, and competitive pricing.

Applications

The Schneider Electric NW32H1 Circuit Breaker is a high-capacity air circuit breaker from the MasterPact NW product family, developed for low-voltage power distribution systems that require dependable protection and stable operation. With a rated current of 3200 A, it is designed for demanding electrical installations where large loads, fault-current management, and operational continuity are important considerations.

The NW32H1 is suitable for a range of industrial and infrastructure applications:

Industrial Main Distribution: Used in main switchboards to protect high-current incoming power circuits in manufacturing facilities.
Commercial Electrical Infrastructure: Suitable for large buildings, commercial complexes, and centralized power distribution installations.
Power Distribution Switchgear: Provides circuit protection for main feeders and high-capacity distribution branches.
Utility and Substation Installations: Can be incorporated into low-voltage distribution arrangements requiring high-current switching and protection.
Critical Facility Power Systems: Supports electrical distribution in facilities where reliable circuit protection and planned maintenance are essential.

For system integrators and electrical equipment suppliers, the NW32H1 offers a practical option for projects requiring a 3200 A MasterPact NW circuit breaker.

Advantages

1. High-Capacity Current Handling

With a rated current of 3200 A, the NW32H1 is designed for substantial electrical loads. It is suitable for main distribution applications in industrial plants and large electrical installations.

2. Dependable Circuit Interruption

The H1 breaking-capacity class provides a defined short-circuit interruption performance. This helps engineers select appropriate protection equipment according to the prospective fault current of the installation.

3. Configurable Protection Functions

Compatible MicroLogic trip-unit configurations allow the breaker to be adapted to different protection requirements, including overload and short-circuit protection.

4. Flexible Switchgear Integration

Depending on the complete product reference, the MasterPact NW platform offers fixed and drawout installation arrangements. This provides flexibility when designing new switchgear or replacing existing equipment.

5. Suitable for Demanding Operating Environments

The robust construction of the MasterPact NW family makes it appropriate for electrical distribution systems that experience frequent operational demands and require structured maintenance.

6. Convenient System Maintenance

The availability of compatible accessories, auxiliary contacts, and protection-unit options helps support maintenance planning and integration with broader electrical control systems.

7. Established Product Platform

As part of the MasterPact NW family, the NW32H1 benefits from a mature low-voltage circuit breaker platform, making it a practical choice for industrial electrical projects and equipment replacement requirements.

Technical FAQs

Q1: What is the rated current of the Schneider NW32H1 Circuit Breaker?

The NW32H1 has a rated current of 3200 A at an ambient reference temperature of 40°C. It is designed for high-current low-voltage power distribution systems, particularly main distribution and large feeder applications.

Q2: What does the H1 breaking-capacity classification represent?

H1 identifies the circuit breaker's short-circuit performance class within the MasterPact NW range. The NW32H1 provides a rated ultimate short-circuit breaking capacity (Icu) of 65 kA at 440 V AC.

Q3: What is the maximum rated operational voltage of the NW32H1?

The rated operational voltage is up to 690 V AC at 50/60 Hz. The actual application must comply with the corresponding voltage-specific breaking-capacity ratings.

Q4: What is the difference between the NW32H1 and NW32H2?

Both belong to the MasterPact NW32 family and have a 3200 A current rating, but they have different short-circuit performance levels. The H1 version is rated at 65 kA at 440 V AC, while H2 offers a higher breaking-capacity class. Selection should be based on the prospective fault current of the installation.

Q5: Which MicroLogic trip units can be used with the NW32H1?

Compatible MicroLogic protection units are available for the MasterPact NW platform. The exact trip-unit selection depends on the breaker reference, sensor rating, protection requirements, and accessory configuration.

Q6: What is the function of the Icw rating?

Icw represents the rated short-time withstand current. It indicates the fault current that a circuit breaker can withstand for a specified period without sustaining unacceptable damage. The NW32H1 has a rated short-time withstand current of 65 kA for 1 second and 3 seconds.

Q7: Can the NW32H1 be used in a drawout switchgear assembly?

Yes. Drawout configurations are available for the NW32H1. This arrangement allows the breaker to be moved between connected, test, and disconnected positions, subject to the corresponding chassis and installation accessories.

Q8: Does the NW32H1 support electrical remote control?

Remote electrical operation can be implemented with compatible operating mechanisms and control accessories. The required closing and opening releases, auxiliary contacts, and control-circuit specifications must be checked against the complete product reference.

Q9: What should be considered when integrating the NW32H1 into an existing distribution panel?

Engineers should verify the rated current, voltage, short-circuit capacity, number of poles, mounting arrangement, terminal connections, control unit, and accessory compatibility. The switchgear's mechanical and electrical requirements must also be considered.

Q10: What maintenance checks are recommended for the NW32H1?

Maintenance should include inspection of primary connections, contact condition, operating mechanisms, auxiliary circuits, and protection settings. Functional testing and maintenance intervals should follow the applicable manufacturer's instructions and electrical safety procedures.

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