High Insulation Voltage 400V Single Pole Breaker
Pugao High Insulation Voltage 400V Single Pole Breaker manufacturer supplies single-phase circuit protection solutions developed by Zhejiang Pugao Electric Power Co., Ltd., a low-voltage electrical equipment producer established in 2011. With 14 years of manufacturing experience, the company focuses on power distribution switches, control equipment, motors, instrumentation, and related electrical products for international markets.
The High Insulation Voltage 400V Single Pole Breaker is designed for AC low-voltage circuits where reliable overload protection, short circuit protection, and electrical isolation performance are required. Based on Pugao’s manufacturing experience, production equipment, and quality management system, Pugao provides circuit breaker solutions for residential, commercial, and industrial distribution applications.
High Insulation Voltage 400V Single Pole Breaker Designed for Single-Phase Circuit Protection
A single-pole circuit breaker is mainly used to control and protect one live conductor in a single-phase AC circuit. Compared with multi-pole protection devices, the single-pole structure requires less installation space and is suitable for compact distribution systems.
The High Insulation Voltage 400V Single Pole Breaker combines thermal protection and magnetic protection mechanisms to respond to different electrical fault conditions:
Thermal Protection Against Continuous Overload
When the connected electrical load exceeds the rated current for an extended period, the internal bimetallic element reacts to the generated heat and triggers delayed tripping.
This protection function helps reduce risks caused by prolonged overheating of wires and electrical components.
Main characteristics:
Suitable for protecting single-phase AC circuits
Supports current selection from 6A to 63A
Provides delayed response for overload conditions
Helps protect downstream electrical equipment from excessive current
Magnetic Protection Against Short Circuit Faults
For sudden high-current short circuit conditions, the electromagnetic release mechanism activates rapidly to disconnect the circuit.
The magnetic protection system is designed to:
Detect abnormal instantaneous current increases
Quickly disconnect fault circuits
Reduce potential damage to connected electrical equipment
Improve electrical safety during abnormal operating conditions
Arc Extinguishing Structure for Repeated Operation
During circuit interruption, electrical arcs may occur between contacts. The internal arc extinguishing structure helps divide, cool, and extinguish the arc to reduce contact damage.
The manufacturing process includes automated production equipment and inspection procedures to maintain product consistency during assembly.
Technical Specifications and Configuration Options
Before selecting a circuit breaker, buyers should consider rated current, circuit type, installation environment, and downstream equipment requirements. Pugao supports customized solutions according to customer parameters and application requirements.
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Item
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Specification
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Product Name
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High Insulation Voltage 400V Single Pole Breaker
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BrandPugao
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Manufacturer
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Zhejiang Pugao Electric Power Co., Ltd.
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Product Type
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Single Pole AC Circuit Breaker
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Pole Number
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1 Pole
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Applicable Frequency
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AC 50Hz
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Rated Voltage Application
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230V single-phase circuits
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Insulation Voltage
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Up to 400V AC
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Rated Current Range
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6A-63A
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Protection Functions
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Overload protection and short circuit protection
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Application
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Residential, commercial, and industrial low-voltage distribution
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Custom Service
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OEM/ODM, logo printing, parameter customization
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Application Areas of Pugao Circuit Breaker Solutions
The High Insulation Voltage 400V Single Pole Breaker is suitable for various low-voltage distribution environments where single-phase circuit protection is required.
Residential Electrical Distribution
For household lighting circuits and low-power electrical equipment, single-pole breakers provide individual circuit protection within distribution boxes.
Typical applications include:
Lighting circuits
Small electrical appliances
Residential branch circuits
Commercial Electrical Systems
Commercial buildings often require flexible circuit management for different electrical loads.
The product can be applied in:
Office electrical distribution
Retail facilities
Small commercial power systems
Industrial Control and Equipment Protection
For industrial applications, circuit protection selection needs to consider equipment power requirements and operating conditions.
Possible applications include:
Industrial control panels
Auxiliary electrical circuits
Low-voltage equipment protection systems
Manufacturing Capability and Quality Control Experience
Pugao circuit protection products are manufactured by Zhejiang Pugao Electric Power Co., Ltd., which has developed dedicated production capabilities for low-voltage electrical equipment.
The company’s production resources include:
Automated small circuit breaker semi-production line
Automatic packaging and laminating production line
Fully automatic punching machines
Product inspection and validation workbenches
Automated laser marking equipment
Semi-automatic pad printing machines
Multiple manual production lines
Semi-automatic spot welding machines
These production facilities support stable manufacturing processes from component processing to final inspection.
In 2024, Zhejiang Pugao Electric Power Co., Ltd. obtained ISO9001 international quality system certification and intellectual property management system certification, strengthening its quality management and production control processes.
Compliance Verification and International Supply Experience
For overseas electrical equipment buyers, compliance documentation and production reliability are important factors during supplier evaluation.
Zhejiang Pugao Electric Power Co., Ltd. has obtained and completed relevant compliance verification documents, including:
GTS EMC Compliance Verification
EU EMC Directive Declaration of Conformity (DoC)
Eurofins Compliance Verification
UDEM Electromagnetic Compatibility Directive Attestation of Conformity
ECM Certificate of Compliance
Since establishing its Yiwu Foreign Trade Department in 2012, the company has continuously developed international market supply capabilities. In 2018, overseas sales reached nearly USD 10 million, mainly serving international customers.
OEM Customization and Technical Support
Pugao supports OEM and ODM Insulation Voltage 400V Single Pole Breaker cooperation for distributors, electrical wholesalers, and equipment manufacturers.
Customization options include:
Customer brand logo printing
Product parameter customization
Packaging requirements
Technical solutions based on customer specifications
For application issues, Pugao provides technical guidance related to installation, maintenance, and product selection.
Common support areas include:
Current rating selection
Wiring method confirmation
Installation condition evaluation
Circuit application matching
Common Selection Considerations Before Purchase
Selecting a circuit breaker requires more than choosing the current rating. Buyers should evaluate the complete electrical environment.
Important factors include:
Rated Current Matching
The selected current rating should correspond with the connected load and cable capacity.
Installation Environment
High-temperature or poorly ventilated distribution boxes may influence thermal protection performance. Proper installation conditions should be considered during system design.
Wiring Quality
Loose terminals or unsuitable wire sizes may increase contact resistance and generate excessive heat. Correct installation procedures are necessary to maintain reliable operation.
FAQ
Do you provide OEM service for High Insulation Voltage 400V Single Pole Breaker?
Yes. Pugao supports OEM/ODM cooperation, including logo printing and customized solutions according to customer drawings and technical requirements.
What current range is available?
The standard available current range is 6A-63A. Customers can select suitable specifications according to their circuit requirements.
What certifications and compliance documents are available?
Zhejiang Pugao Electric Power Co., Ltd. has completed ISO9001 quality system certification and obtained EMC-related compliance verification documents from organizations including GTS, Eurofins, UDEM, and ECM.
What support is available after purchase?
Technical guidance, installation information, and troubleshooting support are available for customers requiring assistance during product application.
Pugao High Insulation Voltage 400V Single Pole Breaker combines manufacturing experience, electrical protection design, and quality management practices from Zhejiang Pugao Electric Power Co., Ltd. to support global customers seeking dependable low-voltage circuit protection solutions.
