benlong 
Máy kiểm tra và đặt lại từ tính tự động RCBO
Automatic RCBO magnetic reset & testing machine with integrated demagnetization, residual current injection (10‑500mA), and magnetic trip verification. Fast cycle times (5‑10 sec), IEC compliant, MES ready. Ideal for inline RCBO production testing.
Automatic RCBO Demagnetization & Tripping Test Unit
The RCBO Auto Magnetic Reset with Testing Machine is an inline automated test machine for production and quality assurance testing of residual current circuit breakers (RCBOs) with over current protection. This system uses controlled magnetic demagnetization to remove residual magnetism from the circuit breaker’s tripping mechanism; therefore, producing test results that are both stable and repeatable. The system also performs automatic residual current injection and magnetic tripping tests for testing RCBOs’ sensitivity, response time, and functional reliability, according to IEC 61008-1/IEC 61009-1. The RCBO Auto Magnetic Reset Test Machine can be operated inline or as a stand-alone test unit. The RCBO Auto Magnetic Reset Test Machine features precise current control, fast test cycle times, and reliable pass/fail judgment. In addition, the test data can be automatically acquired and this unit can easily be integrated into an automated assembly line or into a production environment that is operated using a Manufacturing Execution System (MES).
The core features of the device are: automatic demagnetization of the device, programmable residual current (IΔn) injection (30mA, 100mA, 300mA), trip time measurement ( ±1ms), and magnetically verifying trip. The device is capable of testing both Type “A” and AC Type RCBOs. The results of tests made are recorded and can be sent to MES systems for total traceability. This makes the device is suitable for testing RCBO production lines, product quality control and testing for certification purposes.
Standard delivery: 30-45 days | Fully automated demagnetization | MES ready
What is an RCBO Automatic Magnetic Reset & Testing Machine?
An RCBO magnetic reset & test machine is a testing unit for testing residual current circuit breakers with overcurrent protection (RCBOs). The RCBO will perform 2 main functions, which are magnetic demagnetization (an automated controlled method of removing residual magnetism from the tripping mechanism) and residual current testing (the use of a programmable residual current (I Δn) to test the tripping time and sensitivity). In addition, the unit also tests the magnetic trip (overcurrent). All testing is carried out in a completely automated manner with very accurate current control and digital timing. These systems can be integrated into inline production environments where they can provide a fast cycle time (approximately 5-10 seconds per RCBO) and connect to MES for data traceability. Compliance with IEC 61008-1/61009-1. As a non-standard/ custom solution we design the testing current range, demagnetization profile and fixture based on your RCBO models.
Controlled magnetic reset eliminates residual magnetism for repeatable tests.
Programmable IΔn (e.g., 30mA, 100mA) with high accuracy.
Checks overcurrent protection function (instantaneous and short‑time).
Test results uploaded in real time for full traceability.
Test Process & Key Features
Thông số kỹ thuật
| Test functions | Demagnetization, residual current trip test (IΔn), magnetic trip test (overcurrent) |
|---|---|
| Residual current range | Programmable 10mA – 500mA (30mA, 100mA, 300mA typical)– |
| Residual current accuracy | ±5% of set value– |
| Tripping time measurement | 0‑500ms, accuracy ±1ms– |
| Demagnetization control | Programmable sequence to reset magnetic mechanism before each test– |
| Magnetic trip test | Applies 5‑10× rated current (configurable), trip time measurement– |
| Test cycle time | Approx. 5‑10 seconds per RCBO (depends on test sequence)– |
| Compatible RCBO types | AC‑type, A‑type; single‑phase or three‑phase; various IΔn ratings– |
| Hệ thống điều khiển | PLC (Siemens) with HMI, recipe storage for 20+ product models– |
| Nguồn điện | 220V ±10% 50Hz | Compressed air for fixtures (optional)– |
Ưu điểm kỹ thuật cốt lõi
Eliminates residual magnetism for consistent results
Residual magnetism can remain in the tripping mechanism of an RCBO after it has been manufactured or previously tested, resulting in inconsistencies in sensitivity. Therefore, it is essential that an integrated demagnetization station provides a controlled, decaying magnetic field to reset the mechanism prior to each test, ensuring that all RCBOs are tested under the same magnetic conditions. This is crucial for compliance with IEC requirements.
High‑speed inline testing
By providing a normal cycle time of 5-10 seconds per unit (demagnetization, residual current and magnetic trip testing), the system is capable of keeping up with production lines running at high volumes. The presence of parallel test stations (optional) will further improve throughput.
Precise residual current injection
With an accuracy level of +/- 5%, the built-in/current source produces an output circuit that provides a pure sinusoidal/pulsed DC fault current (depending on the type of ‘RCBO’ being used). By utilizing this means, the measurement of trip times will be a true reflection of the operation of the device itself and will eliminate the variance found in test equipment.
Full traceability & MES integration
Each RCBO has been tested and the results of the test (trip times at IΔn, magnet trip time, demagnetisation status) are associated with its barcode or serial number. Data is reported from the RCBOs to the MES through OPC UA or Modbus TCP such that complete traceability is provided for quality audits and IEC certification purposes.
Customer Success Story – RCBO Manufacturer
The leading manufacturer of residual current circuit breakers was facing irregularities in trip times as the result of a residual magnetic field building up after assembly. High rework rates led to their manual testing method being ineffective; therefore, Benlong provided an automated system with automatic magnetic reset and automatic testing along with demagnetization as part of the package. The results after 3 months were:
Purchasing this machine resulted in the customer being able to recoup their investment through operational benefits (including compliance with IEC factory audits that require full traceability) within eight (8) months.
Ứng dụng và tích hợp
Custom Engineering & Delivery
Request a Custom RCBO Test Machine Quote
Please provide us with your samples for testing and all other tests (including IΔn ratings / cycle times / creating data logs). Our engineers will develop an automatic device for demagnetizing and trip testing with complete MES integration as well as detailed ROI analysis.
WhatsApp: +86 150 5837 0007 | Email: xsb@benlongkj.cn | Hỗ trợ tiếng Anh và tiếng Trung
Why Choose Benlong for RCBO Test Automation?
- Hơn 15 năm kinh nghiệm thiết kế RCBO test equipment for residual current devices
- Proven demagnetization technology for consistent trip sensitivity
- High‑speed inline testing (5‑10 sec/unit) with MES connectivity
- Compliant with IEC 61008‑1 / 61009‑1
- Dịch vụ toàn cầu và hỗ trợ phụ tùng thay thế
Máy tiêu chuẩn bao gồm
Residual current device (programmable IΔn) coils & controllers.
Precision timer (±1ms).
PLC with HMI (Siemens).
Bar code scanner.
Data logging software.
Production Management Software Interface (OPC UA).
Safety Guarding.
Calibration Certificate.
12 Month Warranty.
Câu hỏi thường gặp
Residual magnetism may exist in the magnetic material of the tripping coils and/or the permanent magnets, found in RCBOs. The residual magnetic field will affect the trip sensitivity (or “trip point”) of the RCBO, potentially resulting in inconsistent test result. The demagnetization process removes the residual magnetism in the magnetic material prior to each test and therefore allows each unit to be tested under the same conditions.
Our standard machine supports AC-type and A-type RCBOs. If you are testing B-type (smooth DC) you will require an upgraded current source that has pulsed DC capabilities. Please provide your specifications for your RCBO so we can provide you with a custom recommendation.
The unit executes a full test sequence (demag → residual current trip test (I delta n) and magnetic trip overcurrent test). All parameters are programmable, and results are logged individually per unit.
Where testing is done as per standard procedure (demagnetize + residual current test at 30mA + magnetic trip), there is a cycle time of approximately five to ten seconds for each unit. Usage of parallel test stations will further improve throughput.
The OPC UA and Modbus TCP protocols are used to communicate with the system. Real-time upload of test results (i.e., trip time, used IΔn, magnetic trip time, and pass or fail status) linked to the unit’s barcode or serial number.
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