Introduction

Reliable circuit protection is a fundamental requirement in industrial and commercial electrical distribution. The Schneider Electric NS800NA Circuit Breaker is designed for applications where high-current switching, circuit protection, and dependable electrical isolation are important.

Belonging to the Compact NS molded case circuit breaker family, the NS800NA combines an integrated protective structure with a design intended for low-voltage distribution equipment. Its 800 A frame-class designation makes it relevant to larger feeder circuits and distribution assemblies that require a higher current capacity than conventional smaller-frame MCCBs.

For industrial facilities, the breaker can be incorporated into power distribution panels supplying production equipment, auxiliary systems, and other electrical loads. Its application flexibility also makes it relevant to commercial buildings and infrastructure installations.

Another consideration is its role in equipment maintenance and replacement. When an existing Compact NS breaker requires replacement, identifying the correct model and configuration is essential. Electrical ratings, trip-unit characteristics, pole arrangement, connection dimensions, and accessory compatibility should all be checked before installation.

For international buyers, distributors, and electrical contractors, the NS800NA represents an option worth considering when sourcing Schneider Electric low-voltage circuit protection equipment. Confirming the complete reference and actual nameplate specifications helps ensure that the selected product matches the intended application.

Technical Specifications

The following table summarizes the supplied physical information and the product's general identification details.

Parameter	Specification
Brand	Schneider Electric
Product Series	Compact NS
Model	NS800NA
Product Type	Molded Case Circuit Breaker (MCCB)
Frame Current Class	800 A
Rated Operational Voltage	Configuration Dependent
Rated Frequency	50/60 Hz, subject to nameplate
Number of Poles	Configuration Dependent
Trip Unit	Configuration Dependent
Protection Functions	Release Dependent
Mounting Type	Panel / Switchboard Installation
Dimensions (H × W × D)	327 × 210 × 147 mm
Net Weight	14 kg
Weight Conversion	30.86 lb

Technical note: The complete electrical ratings, breaking capacity, pole arrangement, and trip-unit specifications should be verified against the original Schneider Electric product nameplate or complete catalog reference. The supplied dimensions and weight are retained as provided.

Recommended Related Models

For customers comparing Schneider Compact NS circuit breakers, the following models may be relevant when evaluating alternative current ratings and distribution requirements.

Model	Product Description	Application
Schneider NS400N	Compact NS Circuit Breaker	Medium-to-high-current distribution
Schneider NS630N	Compact NS Circuit Breaker	High-current feeder protection
Schneider NS800N	Compact NS Circuit Breaker	800 A distribution applications
Schneider NS800H	Compact NS Circuit Breaker	Higher breaking-capacity applications
Schneider NS1000N	Compact NS Circuit Breaker	Larger distribution systems

The models listed are comparison candidates rather than confirmed direct replacements. Their rated current, breaking capacity, release type, and physical compatibility must be checked before selection.

Popular Related Models

Schneider Electric offers a broad range of circuit breakers for industrial power distribution, switchgear assemblies, and electrical protection applications. The following models are also relevant to customers sourcing Compact NS and MasterPact equipment.

Product Model	Product Description
Schneider NS400N	Compact NS Circuit Breaker
Schneider NS630N	Compact NS Circuit Breaker
Schneider NS800NA	Compact NS Circuit Breaker
Schneider NS800N	Compact NS Circuit Breaker
Schneider NS1000N	Compact NS Circuit Breaker
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 NS800NA Circuit Breaker – Industrial Electrical Protection

We support international customers sourcing Schneider Electric circuit breakers and industrial electrical components. Whether you are purchasing for a new switchboard, maintaining an existing distribution system, or replacing an installed Compact NS unit, contact us for product availability, model verification, and a competitive quotation.

Applications

The Schneider Electric NS800NA Circuit Breaker is a low-voltage molded case circuit breaker (MCCB) designed for power distribution systems requiring dependable switching and circuit isolation. As part of the Schneider Compact NS family, it is intended for industrial and commercial electrical installations where equipment protection and reliable power distribution are essential.

With its 800 A frame-class designation, the NS800NA is suitable for applications involving substantial electrical loads. Its compact construction also makes it a practical option for distribution panels and switchgear assemblies where installation space and equipment organization are important.

Typical application areas include:

Industrial Power Distribution: Used in factory distribution boards to protect incoming and outgoing electrical circuits.
Commercial Buildings: Suitable for electrical distribution in office buildings, shopping centers, and large commercial facilities.
Motor Distribution Systems: Can be incorporated into power distribution arrangements supplying industrial motor circuits, subject to appropriate protection coordination.
Distribution Switchboards: Provides switching and isolation functions in low-voltage electrical panels.
Electrical Equipment Protection: Helps protect downstream equipment and distribution circuits against abnormal current conditions when configured with the appropriate protection characteristics.
Infrastructure Projects: Supports electrical distribution installations in utilities, transportation facilities, and other commercial infrastructure.

For electrical contractors, panel builders, and industrial maintenance teams, the NS800NA offers a practical circuit breaker solution for high-current distribution applications.

Advantages

1. High-Current Distribution Capability

The NS800NA belongs to the 800 A frame class, making it suitable for demanding low-voltage distribution applications. It can be considered for main distribution and high-capacity feeder protection.

2. Compact MCCB Construction

Its molded case design combines circuit protection and switching functions in an integrated assembly. This helps simplify panel layouts and equipment organization.

3. Reliable Electrical Isolation

The circuit breaker provides a means of opening and isolating electrical circuits during maintenance and system operation, subject to the installation's isolation procedures.

4. Industrial Application Flexibility

The Compact NS platform is designed for a wide range of industrial and commercial power distribution arrangements, allowing engineers to select equipment according to specific system requirements.

5. Convenient Panel Integration

The molded case format supports integration into compatible low-voltage switchboards and distribution panels. Correct mounting and connection accessories should be selected for the particular configuration.

6. Practical Equipment Replacement

The NS800NA is relevant to maintenance and replacement projects involving older Compact NS equipment. Checking the complete reference and electrical characteristics helps avoid compatibility issues.

7. Suitable for Professional Electrical Installations

For panel manufacturers and electrical equipment distributors, the NS800NA provides an established Schneider Electric product option for projects requiring a robust low-voltage circuit breaker.

Technical FAQs

Q1: What does the NS800NA model designation indicate?

NS800NA identifies a Schneider Electric Compact NS circuit breaker model. The 800 designation indicates its frame-current class. The exact rated current and protection characteristics should be confirmed using the complete product reference and nameplate.

Q2: Is the Schneider NS800NA an MCCB or an ACB?

The NS800NA belongs to the molded case circuit breaker (MCCB) category. It is different from the MasterPact NW air circuit breaker family, which is designed for larger low-voltage distribution applications.

Q3: What protection functions does the NS800NA provide?

Protection functions depend on the installed trip-unit or release configuration. Depending on the version, protection may include overload and short-circuit protection. Confirm the actual release type before specifying the breaker.

Q4: Can the NS800NA be used in three-phase distribution systems?

Yes, provided the selected pole configuration and electrical ratings are suitable for the installation. Three-phase applications must also consider system voltage, neutral requirements, and grounding arrangements.

Q5: How should the NS800NA be selected for a power distribution panel?

Selection should consider the design current, system voltage, prospective short-circuit current, conductor capacity, protection coordination, and installation conditions. The breaker's breaking capacity must be sufficient for the available fault current.

Q6: What is the difference between rated current and frame current?

Frame current refers to the current class associated with the circuit breaker's construction. Rated current is the current specified for the particular breaker and release configuration under defined operating conditions. These values should not automatically be treated as identical.

Q7: Can the NS800NA be used for motor protection?

It can be incorporated into motor distribution systems when its protection characteristics are coordinated with the motor starter, overload protection, and short-circuit protection requirements. The breaker alone should not be assumed to provide every function required by a motor protection system.

Q8: What causes an NS800NA breaker to trip unexpectedly?

Possible causes include circuit overload, short-circuit faults, incorrect protection settings, excessive ambient temperature, or loose electrical connections. The trip indication and electrical measurements should be examined to identify the actual cause.

Q9: Can auxiliary contacts be installed on the NS800NA?

Compatible auxiliary contacts and other accessories may be available depending on the exact Compact NS version. Accessory compatibility should be checked against the breaker reference before installation.

Q10: What should be inspected during routine maintenance?

Inspect the operating mechanism, terminal connections, insulation condition, accessory wiring, and signs of overheating or mechanical damage. Functional testing should be performed according to the manufacturer's maintenance instructions and applicable electrical safety requirements.

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