MCB Long Delay Action Characteristics Test Bench

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:

• 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

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 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 the purpose of a long delay action characteristics test for MCB?
A: It is used to verify the thermal overload protection performance of an MCB, ensuring it trips within the specified time under overload current conditions.

Q2: Which standards does this test bench comply with?
A: The equipment is designed according to IEC 60898-1 and GB 10963.1 requirements.

Q3: Is this test bench suitable for production line testing?
A: Yes. It can be used for routine production sampling tests as well as laboratory verification.

Q4: Can the test parameters be customized?
A: Yes. Test current range, timing parameters, and configuration can be customized based on your MCB specifications.

Q5: What is the price of this MCB long delay test bench?
A: The price depends on test capacity, current range, and configuration.
Please contact TF Automation for a customized solution and quotation.