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MCB semi-automatic magnetic trip test bench
MCB semi‑automatic magnetic trip test bench for instantaneous short‑circuit testing per IEC 60898‑1. Programmable 5‑10× In current, digital timer (±1ms), touchscreen HMI, automatic data recording. Ideal for QC labs, production lines, and R&D.
MCB Semi‑Automatic Magnetic Trip Test Bench
The high-precision MCB semi-automatic magnetic trip test bench is used to test miniature circuit breakers (MCB) instantaneously to protect against short circuit by using perform as per IEC 60898-1 Compliance test standards. The test bench enables the user to create simulated short circuits (5-10 times rated current) for MCBs, measure response time, and record data automatically, ensuring that all tests are precise and repeatable. The test bench has a user-friendly touch screen interface, adjustable test parameters (multipliers and trip time), and a robust mechanical design combined with multiple safety features, which makes the test bench ideal for performing quality control, maintenance, and R&D tasks in both a Manufacturing and laboratory/Research environment.
A semi-automatic testing method has been used to automate both current injections as well as trip time measurements during operator loading or unloading of the MCB as well as the selection of test parameters through the HMI interface. \’The testing bench can be used to test 1P, 2P, 3P and 4P MCBs using programmable currents (5x, 7.5x, 10x In) and trip time acceptance windows.
Standard delivery: 30-45 days | Touchscreen control | Automatic data recording
What is an MCB Semi‑Automatic Magnetic Trip Test Bench?
MCB semi-automatic magnetic trip test benches are specialized testing systems that verify the instantaneous trip (short short-circuit) characteristics of miniature circuit breakers. Unlike thermal trip tests that verify overload protection, magnetic trip tests apply a high current pulse (or multiple of rated current) and capture trip time in ms. The test bench automates the current and time generation, however relies on the operator to load/unload and specify parameters. The primary features of the bench are a high-current source (up to 5,000A depending on MCB rating), an extremely accurate digital timer (± 1ms of accuracy), and a touch screen HMI for configuration of the tests. The test bench also meets the requirements of IEC 60898-1 (section on instantaneous trip). The test bench is critical for quality control in MCB manufacturing, type testing laboratories, and field maintenance. As a non-standard/i.e. custom solution, we will customize the current range, fixture, and test parameters to suit your specific MCB series.
Programmable test current up to 5‑10× In (max 5,000A depending on MCB rating).
Intuitive HMI for selecting test current multiplier, timing window, and viewing results.
Stores trip time, test current, pass/fail status for each test; USB export.
Supports testing of B, C, D trip curves at specified current multipliers.
Key Features & Test Process
技術仕様
| Test current range | 5×, 7.5×, 10× In (programmable, up to 5,000A peak) |
|---|---|
| 現在の精度 | ±5% of set value– |
| Timing range | 0 – 999ms– |
| Timing accuracy | ±1ms– |
| Display & control | Color touchscreen HMI, pass/fail indication, test counter– |
| Data recording | Automatic storage of trip time, test current, result; USB export to CSV– |
| Fixture | Universal clamps for 1P, 2P, 3P, 4P MCBs– |
| Safety features | Enclosed test chamber, emergency stop, interlock on door– |
| 電源 | 220V ±10% 50Hz (control) + high‑current source connection– |
| Dimensions (L×W×H) | Approx. 800mm × 600mm × 500mm (desktop with enclosure)– |
主要な技術的利点
Fast, repeatable magnetic trip testing
The bench delivers a high‑current pulse with a fast rise time (<1ms) and precise magnitude, ensuring that the trip time measurement reflects the actual breaker response, not test equipment variation. Automated timing eliminates operator stopwatch errors.
Intuitive touchscreen operation
Using a simple tap, operators may select a test current multiplier (either x5, x7.5 or x10) and a trip time range. The results (i.e. pass/fail) will be shown instantly. The bench will automatically archive the trip time data for quality documentation records.
Versatile fixture for mixed production
Universal clamps have the ability to hold numerous circuit breakers (MCBs) such as 1P, 2P, 3P and 4P without needing to change tools. They also have adjustable contact spacing and can accommodate most terminal pitches (17.5mm – 25mm). Custom fixtures can be supplied as an option for high volume dedicated testing (HVD) applications.
Data logging for traceability
All test results are stored by default along with time stamps. Test data can be exported on USB in .csv format for SPC tracking or customer quality documentation. An optional barcode scanner can link results to individual MCB serial numbers.
Customer Success Story – MCB Manufacturer QC Lab
Magnetic trip testing for a prominent MCB producer was done by means of manual primary injection testing equipment; a tedious, inconsistent process owing to uncontrolled current regulators. Benlong provided them with a semi-automatic magnetic trip test bench that features touchscreen control and automated data collection. In three months of usage, results can be summarised as follows:
The bench has been fully paid back after 7 months of operation and has resolved issues with customers regarding inconsistent trip times.
アプリケーションと統合
カスタムエンジニアリングと納品
Request a Custom Magnetic Trip Test Bench Quote
We require you to provide us with your specifications for your MCB (current ratings, trip curves and test volumes). Our engineers will provide a semi-automatic magnetic trip test bench designed for your current requirements and capable of data logging as well as providing a complete ROI (return on investment) analysis.
WhatsApp: +86 150 5837 0007 | メール: xsb@benlongkj.cn | 英語と中国語でのサポート
Why Choose Benlong for Magnetic Trip Test Benches?
- 15年以上のデザイン経験 MCB test equipment for manufacturers and labs
- Proven high‑current sources with fast rise time and ±5% accuracy
- Semi‑automatic operation – balance of speed and flexibility
- Touchscreen HMI with automatic data recording and USB export
- グローバルなサービスおよびスペアパーツサポート
Standard Bench Includes
A generator that produces high-current output (5 to 10 times the normal current) with an adjustable timer, touch screen controls and MCBs, USB data export, and an enclosed safe area as defined by the manufacturer’s specifications. It includes a certificate of competency and is covered for 12 months under a manufacturer’s warranty.
よくある質問
A magnetic trip test simulates a short circuit by passing an increased amount of current (5 to 10 times the rated current). The rated current of the breaker. Must trip within milliseconds. A thermal trip test applies just an overload (11% to 145% of the rated current) and measures the trip time in seconds or minute. The bench that failure occurred on was dedicated strictly for magnetic trip test.
Yes, the bench has programmable current multipliers (5×, 7.5×, 10×) which will provide coverages for B, C, and D curves, then the operator selects the required multiplier via the HMI.
A thyristor controlled, high current transformer with a ‘bench’ power supply (220V mains supply) is capable of producing a short duration, high current, 5,000A (peak) output. Each pulse will take place in milliseconds, making it suitable for continued use.
In order for the high-current circuit (typically 63A or more) to meet its design criteria, it needs to have an independent power supply. This is done by the engineers after the circuit has been designed and built.
Testing a single MCB usually takes between 5 -10 seconds; this includes load testing, and unloading the MCB. The bench may also be set-up to carry out sequential tests on various MCB poles.
