MCB Delay Action Characteristic Test Bench for Miniature Circuit Breakers

Equipment Overview

The MCB Delay Action Characteristic Test Bench is a specialized testing device designed to evaluate the delay action (thermal tripping) characteristics of miniature circuit breakers (MCBs) . It accurately simulates fault conditions such as overload and short circuit to verify the delayed cut-off performance of circuit breakers during fault events.

The test bench complies with both national and international standards, including  IEC60898-1/EN 60898-1/UL 489, making it suitable for quality inspection, performance evaluation, and type testing in production and laboratory environments.

Main Functions

• Accurate testing of delay action (thermal tripping) characteristics of small circuit breakers
• Simulation of overload, short-circuit, and leakage fault conditions
• Evaluation of delayed cut-off time and operating behavior during fault events
• Suitable for MCB  current action characteristic testing

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 manufacturers

• Low-voltage electrical component factories

• Electrical testing laboratories

• R&D departments for MCB development

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 Us

Industry Expertise

Right from our founding, we’ve dedicated ourselves to low-voltage automation—backed by decades of hands-on industry know-how. We keep full control over R&D and manufacturing processes, rolling out more than 200 sets of automation equipment and production lines every single year.

Excellent Service

Our professional after-sales team delivers on-site technical support and hands-on training to clients worldwide. This ensures your equipment runs smoothly round the clock, with any issues resolved in the shortest time possible.

Proven Quality

Thanks to consistent performance and long-lasting reliability, our equipment has earned the trust and recognition of a vast number of customers across industries.

Customization & Flexibility

We craft fully tailored solutions that align with your unique requirements, supporting a wide range of product models and diverse production scenarios to meet your evolving needs.

Quality Control & Traceability

Rigorous incoming material inspections, strict in-process quality checks, and complete traceable documentation work together to guarantee that every single unit we deliver meets your exact specifications.

Spare Parts & Warranty

We offer dependable warranty terms and rapid spare parts supply, helping you minimize equipment downtime and maximize production efficiency.

Global Delivery & Installation

Boasting rich experience in international shipping, customs clearance, and on-site installation, we make turnkey delivery a seamless, hassle-free process for clients around the globe.

References & Case Studies

FAQS

Q1: What types of MCB can this test bench support?
A: This equipment supports B, C and D curve MCBs with different rated currents.

Q2: 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.

Q3: Is the test data traceable and recordable?
A: Yes. The equipment features a data recording system that automatically logs key parameters such as test current, operating time, and delay tripping time, providing reliable data for analysis and quality control.

Q4: Can the test bench be customized for different current ranges or standards?
A: Yes. The test bench can be configured according to customer requirements, including output current range, number of test stations, and applicable testing standards.