Circuit Breaker Tester

Your Professional Circuit Breaker Tester Supplier

Our goal is to become your reliable partner in the circuit breaker tester in China. Wuhan Huaying Electric Power Tech & Science Co.,ltd, founded in 1997, engaged in the designing, manufacturing and selling of electrical test equipment. We are committed to applying advanced manufacturing technologies and strict quality control standards to every product. Our products are quality-assured, making us a dependable choice for long-term cooperation.

Why Choose Us

Our Certifications

We are ISO9001 quality system certified, and all products comply with international IEC standards or Chinese national standards.

Quality Control

Our company conducts insulation and withstand voltage tests on finished electrical products to ensure they meet safety standards.

Advanced Production Equipment

Our company has advanced production equipment, such as machine tools, voltage dividers, and winding machines.

Our Services

Free replacement for any quality problems within three months, free repair within one year, lifetime repair discounts, and free upgrades to the accompanying microcontroller software from the date of purchase.

Advantages of Circuit Breaker Tester

Increased Safety: Testing ensures that the circuit breakers function appropriately if an electrical fault occurs. This reduces the risk of fires, accidents and equipment damage.

Reduced Downtime: Testing allows you to identify and address issues with breakers in a timely. As a result, they will prevent unplanned outages. Testing also ensures increased operational stability and continuous power supply.

Prolonged Equipment Lifespan: Regular testing helps extend the lifespan of circuit breakers. It minimises wear and tear on components and avoids costly replacements.

Cost Savings: Early detection of issues with circuit breakers allows you to prevent expensive breakdowns of the circuits and circuit breakers. Therefore, you will not need to spend on costly repairs.

Improved Reliability: Regular testing offers you peace of mind that you can rely on the circuit breakers in case of faults in the electrical systems.

Specification of Circuit Breaker Tester

Product name	Circuit breaker tester
Time measurement	Range: 4000ms Error :< 0.1ms Resolution: 0.01ms
Test current	25~100A
Measurement error	< 1%RDG+2D
Coil current measurement	Range: 0~20A; resolution: 0.001A; error: <0.01A
Vibration measurement	Range: 0~5000G; error: <3%
Internal DC power source: voltage	24~265V; current:0~20A
Power supply	AC220V±10%; 50Hz±10%
Working environment: temperature	-10~50℃; Humidity: <80%
Dimension and weight	Dimension: 448×260×150mm; weight: 15kg

Features of Circuit Breaker Tester

Compared to traditional time measurement and speed measurement, the vibration fingerprint detection is easier and more efficient. The vibration fingerprint test results contain richer information of circuit breaker operation, for potential risk of failure or faulty breakers, it can locate the fault position quickly.

The vibration tests do not need to change the original line connection, so the users can complete the charged detection of mechanical characteristics of circuit breaker. Arcing contact analysis module allows users to automatically assess the degree of loss of inside Arc suppression contact of circuit breaker without disassembly.

Types of Circuit Breaker Tester

Type of Tester	Purpose	Key Features
Primary Injection Test Set	Simulates fault conditions by injecting high current directly into the breaker.	Adjustable current settings, displays current and time, may include a motorized switch for remote operation.
Circuit Breaker Analyzer	Performs detailed analysis of the breaker’s operating time, trip settings, and other performance parameters.	Checks trip time, contact resistance, mechanical operation, etc.
Micro-Ohmmeter	Measures the resistance across the breaker’s contacts to ensure proper operation.	High-precision resistance measurement (in micro-ohms), detects wear or abnormal resistance in contacts.
High-Potential (Hipot) Tester	Tests the insulation strength of the breaker.	High-voltage output to test dielectric strength, typically used on medium to high-voltage breakers.
Contact Resistance Tester	Measures the resistance across the breaker’s contacts to ensure they are intact.	High-precision resistance measurement to ensure low resistance and prevent overheating or damage.
Circuit Breaker Vacuum Bottle Tester	Tests the vacuum degree of the arc extinguishing chamber without dismantling.	High precision (10⁻⁵ Pa), uses excitation coil and magnetic controlled discharge method, widely used in power, steel, petrochemical, textile, coal, and railway sectors.
Switch Dynamic Characteristics Test Set	Measures the dynamic mechanical characteristics of high-voltage circuit breakers.	Suitable for less oil, more oil, vacuum, and SF6 types; ensures safe and efficient operation by providing dynamic analysis of breaker performance.

Other Service of Circuit Breaker Tester

Package	Wooden box
Shipping	Sea/Express
Payment	We accept T/T and L/C. For samples or small trial orders

FAQ

Q: What is a circuit breaker for equipment?

A: A circuit breaker is designed to protect an electrical circuit from damage caused by overcurrent or short circuits. Its main function is to interrupt the current flow once a fault is detected by protective relays.

Q: How often should circuit breakers be tested?

A: Low-voltage circuit breakers should be exercised annually and undergo specialized testing every 3 to 5 years. High-voltage breakers need inspection every 6 to 12 months. Specialized units like Arc Fault Circuit Interrupters (AFCIs) should be tested monthly using their built-in test button.

Q: How do you test a circuit breaker with a multimeter?

A: A multimeter can check the voltage supply and continuity of the circuit breaker when it’s off. And For continuity, ensure the resistance is less than 1 ohm when the breaker is closed.

Q: When should a breaker be replaced rather than just tested?

A: Replace the breaker immediately if there is a burning smell, visible damage, or excessive heat. And If the breaker trips frequently under light loads or won’t reset after being turned off, it likely has an internal fault and needs replacement.

As one of the leading circuit breaker tester manufacturers and suppliers in China, we specialized in providing high quality customized products. Please feel free to buy high-grade circuit breaker tester in stock here from our factory.

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