Miniature Circuit Breaker

Thermal Test

MCB thermal test equipment is designed to verify the time delay tripping performance of circuit breakers under simulated overload and high current conditions.Its workflow is as follows:The equipment outputs a standard rated current to simulate overload and determine whether the circuit breaker trips thermally within the specified time.Based on the test results the position of the bi metallic strip is fine tuned through the adjustment screws.The system automatically issues a pass fail result.

How does the MCB Thermal Test Equipment work?

Key Processes

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Pin Riveting (Initial Fixation)

Secure and stabilize the mechanical structure of the circuit breaker.

Thermal Test (Overload Simulation)

Apply a simulated overload current to evaluate delayed tripping performance.

Automatic Calibration

If deviations are detected, the system automatically adjusts screws to calibrate the bimetallic strip position.

Cooling & Reset

Restore the circuit breaker to its initial state through an automated cooling system.

Verification Test

Confirm tripping reliability after calibration.

Multi-Pole Assembly (Optional)

Assemble qualified single-pole breakers into multi-pole units and perform secondary pin riveting.

Magnetic Tripping Test

Simulate short-circuit conditions to test rapid protection performance.

Withstand Voltage Test

Verify insulation strength under high voltage.

Final Assembly & Laser Marking

Install stoppers and use laser marking to print parameters, models, and customer logos.

Product Features

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Full-Process Automatic Testing

covering thermal, magnetic, insulation, and mechanical functions.

High-Precision Auto-Calibration

ensuring accurate bimetallic strip positioning.

Multi-Pole Production Capability

with automated assembly and riveting.

Enhanced Reliability & Consistency

through comprehensive performance verification.

Laser Marking Integration

enabling customizable labeling and traceability.

High Efficiency

achieved through streamlined automated workflows.

Working Steps of MCB Thermal Test Equipment

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Step 1

Fixture grasps the product

Step 2

On/off Test

Step 3

Classification of qualified and
non-qualified products

Technology Strength

Establish good cooperative relationships with suppliers to ensure stable supply of components and reasonableprices; Establish good communication relationships with customers, understand their needs, and provide high-quality services; Establish close cooperative relationships with partners to jointly optimize supply chain proce-sses and improve effciency.

Supply Chain

Our team is composed of multiple technical experts with rich technical background and experience.We have completed multiple projects and achieved signif-cant results. They are the core force of thecompany's team and are capable of addressing various technical challenges. Simultaneously obtainedover 40 inven-tion and utility model patents for the company.

Professional and high-quality

All our staffs and machines within an Integrated Management System which

passedIS0 9001 Quality System to ensure the delivery of services that are at an exception
level of quality, reliability, and value.

What Kind Of Service Can We Provide?

A good supplier will assist you to quickly occupy the target market, gain a goodreputation for your brand and reputation, and thus gain more stability and better benefits.

OEM Service

Customized Logo printing or laser for authorized trademarks
Customized authorized trademark packaging(outer box, inner box)
Customizable catalogue of authorized trademarks
Available for small quantity order
Your overseas super factory

ODM Service

Product mold design anddevelopment
Product function design and development
Product international test reports &Certificates24-hours response
Your overseas super factory

Factory Service

200+ workers, Fast delivery
Automated production lines
Certified is0 90001 systemAcquired CB, CE, TUV, BV, SAA, CCC,FCC productcertificates
15+ sales and customer service staff,FastresponsivenessExtra long warranty, 5 years warranty