MCB Instantaneous Action Characteristic Test Bench

Equipment Overview

The MCB Instantaneous Action Characteristic Test Bench is a dedicated testing solution for verifying the magnetic (instantaneous) tripping performance of miniature circuit breakers.
The system applies a controlled high-current impulse to the MCB and accurately measures the trip time and action behavior, ensuring full compliance with international standards.

Designed for high efficiency, stability, and repeatability, the test bench is suitable for both manual operation and integration into automated MCB testing lines.

System Configuration

The test bench typically consists of the following systems:

• Control System
  Equipped with an advanced control system and intuitive operation panel, allowing flexible setting of fault modes, test current, and delay time parameters.
• Power Supply System
  Provides stable and adjustable voltage and current output to meet the testing requirements of different types and ratings of circuit breakers.
• Fault Simulation System
  Simulates various fault conditions, including overload, short circuit, and grounding, with precise control of fault current and delay time.
• 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.
• Safety Protection System
  Integrated with multiple safety protections, including overload, over-temperature, and short-circuit protection, ensuring safe operation during testing.

Technical Specifications

Application Scope

• Miniature Circuit Breaker (MCB) manufacturers

• MCB production line testing stations

• Quality control and R&D laboratories

• Automation upgrade projects for low-voltage electrical products

After-Sales Service & support

We are committed to long-term cooperation with full technical support:

✅1-Year Free Warranty ：Covers all non-human damages. Replacement and repair included.

✅Lifetime Maintenance Support：We offer lifelong technical assistance and spare parts supply.

✅On-Site Installation & Commissioning：Professional engineers are available to visit your site for setup .

✅Operator Training：On-site or remote training to ensure your team can run the machine independently.

✅Remote Technical Support：Quick response via video call, remote control, Email, WhatsApp, and WeChat.

Why Choose This Test Bench

• Ensures consistent and repeatable test results

• Improves testing efficiency and reduces manual errors

• Supports multiple MCB ratings and curve types (B / C / D)

• Suitable for mass production environments

Why Choose TF Automation

• Specialized in low-voltage electrical automation equipment

• Extensive experience in low-voltage electrical testing solutions

• Strong customization capability based on customer standards

• Reliable technical support and long-term service commitment

References & Case Studies

FAQS

Q1: What is an instantaneous action characteristic test for MCB?
A:It is a test that verifies the magnetic trip performance of an MCB by applying a high current to ensure fast and correct tripping behavior.

Q2: Can this test bench be integrated into an automatic MCB production line?
A:Yes. The test bench is designed to support both standalone operation and integration into fully automated MCB testing and assembly lines.

Q3: Which MCB types are supported?
A:The system supports various MCB ratings and curve types, including B, C, and D curves. Custom configurations are available.

Q4: How many test stations does the equipment support?
A: The test bench supports multiple independent test stations. Each station can operate independently, allowing simultaneous testing to improve efficiency and consistency.