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MCB Long Delay Action Characteristics Test Bench from China Suppliers & Factory for Accurate Circuit Breaker Testing
Equipment Overview
The MCB Long Delay Action Characteristics Test Bench is a professional testing device developed for evaluating the thermal long delay tripping characteristics of miniature circuit breakers (MCB).
It is mainly used to verify whether an MCB can trip accurately within the specified time range when subjected to overload currents below the instantaneous tripping threshold.
This test bench simulates long-duration overload conditions and precisely controls test current, timing, and temperature influence, ensuring stable and repeatable test results.
It is suitable for routine type tests, production line sampling tests, and laboratory verification of MCB products.
Main Functions
- Long delay (thermal) tripping characteristic test for MCB
- Overload current simulation under specified multiples of In
- Accurate measurement of tripping time
- Adjustable test current and timing parameters
- Real-time monitoring of test status and results
- Automatic data recording and result storage
- Safety protection during long-duration testing
System Configuration
The test bench typically consists of the following systems:
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Control System
Equipped with an advanced control system and intuitive operation panel, allowing flexible setting of fault modes, test current, and delay time parameters.
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Power Supply System
Provides stable and adjustable voltage and current output to meet the testing requirements of different types and ratings of circuit breakers.
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Fault Simulation System
Simulates various fault conditions, including overload, short circuit, and grounding, with precise control of fault current and delay time.
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Data Recording System
Automatically records key parameters such as operating time, fault current, and delay cut-off time, generating clear and traceable test data for analysis and evaluation.
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Safety Protection System
Integrated with multiple safety protections, including overload, over-temperature, and short-circuit protection, ensuring safe operation during testing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Power Supply | AC 220V ±10%, 50Hz |
| Air Supply Pressure | 0.2 – 0.8 MPa |
| Rated Power | 1 kVA per test station |
| Maximum Output Current | Up to 500 A per station (configurable) |
| Current Display Range | 0.01 – 500 A (true RMS value) |
| Time Display Range | 1 s – 9 h 59 min 59 s |
| Timing Accuracy | ±0.1% |
| Overall Measurement Accuracy | ±1.0% |
| Waveform Distortion | < 3% |
| Insulation Resistance | > 10 MΩ |
After-Sales Service & Support
We are committed to long-term cooperation with full technical support:
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1-Year Free Warranty
Covers all non-human damages. Replacement and repair included.
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Lifetime Maintenance Support
We offer lifelong technical assistance and spare parts supply.
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On-Site Installation & Commissioning
Professional engineers are available to visit your site for setup.
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Operator Training
On-site or remote training to ensure your team can run the machine independently.
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Remote Technical Support
Quick response via video call, remote control, Email, WhatsApp, and WeChat.
Why Choose TF Automation
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Specialized in low-voltage electrical automation equipment
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Extensive experience in low-voltage electrical testing solutions
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Strong customization capability based on customer standards
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Reliable technical support and long-term service commitment
References & Case Studies
Frequently Asked Questions
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What is the purpose of a long delay action characteristics test for MCB?
It is used to verify the thermal overload protection performance of an MCB, ensuring it trips within the specified time under overload current conditions.
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Which standards does this test bench comply with?
The equipment is designed according to IEC 60898-1 and GB 10963.1 requirements.
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Is this test bench suitable for production line testing?
Yes. It can be used for routine production sampling tests as well as laboratory verification.
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Can the test parameters be customized?
Yes. Test current range, timing parameters, and configuration can be customized based on your MCB specifications.
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What is the price of this MCB long delay test bench?
The price depends on test capacity, current range, and configuration. Please contact TF Automation for a customized solution and quotation.
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How many test stations can this test bench support simultaneously?
The number of test stations is configurable based on your production or laboratory requirements. Please contact TF Automation to discuss your specific needs and get a tailored configuration plan.
Talk to our team today
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