{"id":69,"date":"2026-06-01T10:38:01","date_gmt":"2026-06-01T10:38:01","guid":{"rendered":"https:\/\/khkrh7q1ur.wpdns.site\/product\/mcb-long-time-thermal-calibration-bench\/"},"modified":"2026-06-09T22:36:22","modified_gmt":"2026-06-09T22:36:22","slug":"mcb-long-time-thermal-calibration-bench-product","status":"publish","type":"product","link":"https:\/\/benlongkj.com\/fr\/mcb-long-time-thermal-calibration-bench-product\/","title":{"rendered":"Banc d'\u00e9talonnage thermique longue dur\u00e9e MCB"},"content":{"rendered":"
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IEC 60898\u20111 \u00b7 Long\u2011time overload test<\/div>\n

Professional MCB Long\u2011Time Thermal Calibration Bench<\/h1>\n

Long-time thermal calibration for MCB in the Bus Mould case.<\/p>\n

The Long Time Thermal Calibration Bench conforming with IEC 60898-1 provides a professional testing tool to performed to verify the thermal (long-delay) tripping characteristics of Minature Circuit Breakers (MCB) and assess their ability to trip correctly within a specified time range when tested with overload currents that are below the instantaneous levels (1.13\u00d7, 1.45\u00d7 In).<\/p>\n

The Long Time Thermal Calibration Bench provides the capability to simulate long time duration overload current conditions at precise control of test current, time and temperature influences, all resulting in stable and repeatable results. Therefore, it is ideal for use as part of a routine type testing process, within a production line sampling basis, or for laboratory verification purposes.<\/p>\n

With the modular layout of the system, multiple MCB\u2019s can be tested at the same time (multi-station). Each station has its own constant current supply (up to 500A per station, true RMS), a precision timer (precision +\/- 0.1%) and independent pass \/ fail indication. There are built-in safety features (overload, overtemperature, short circuit) and data recording to ensure reliability. There are optional temperature monitoring and MES Data Export. Most common applications for use are MCB manufacturing QC, certification laboratories and R&D validation.<\/p>\n

Standard delivery: 30-45 days | Multi\u2011station parallel test | Data logging & safety protection<\/span><\/p>\n<\/p><\/div>\n

\n \"MCB<\/p>\n
Multi\u2011station thermal calibration bench (actual product)<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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What is an MCB Long\u2011Time Thermal Calibration Bench?<\/h2>\n

An MCB long term thermal calibration bench is the specialized test rig to verify the overload trip characteristics of miniature circuit breakers by applying a stable, overload current at a set value (normally 1.13 x In for no trip check and 1.45 x In for trip test), for a defined duration (seconds to hours) and measuring the exact trip time. Unlike instantaneous magnetic testers, the thermal calibration test bench utilises the bimetal thermal trip element, which has a trip phenomenon which is dependent upon the magnitude of the current, the ambient temperature and the duration of the test. The bench is equipped with a constant current source with a low waveform distortion (<\/p>\n

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\n Multi\u2011station parallel test<\/strong>
\n Test 4\u201116 MCBs simultaneously for high throughput.\n <\/div>\n
\n High\u2011stability current source<\/strong>
\n Up to 500A per station, accuracy \u00b11%, THD <3%.\n <\/div>\n
\n Precise timing<\/strong>
\n Timing range 1s \u2013 9h 59min, accuracy \u00b10.1%.\n <\/div>\n
\n Data logging & safety<\/strong>
\n Automatic recording, overload\/over\u2011temp protection.\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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Test Process & System Features<\/h2>\n
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\n \"Intelligence<\/p>\n
Renseignements et visibilit\u00e9<\/div>\n<\/p><\/div>\n
\n \"Efficiency<\/p>\n
Efficacit\u00e9 et durabilit\u00e9<\/div>\n<\/p><\/div>\n
\n \"Design<\/p>\n
Conception et int\u00e9gration<\/div>\n<\/p><\/div>\n
\n \"Safety<\/p>\n
S\u00e9curit\u00e9 et fiabilit\u00e9<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

Sp\u00e9cifications techniques<\/h2>\n
High\u2011precision multi\u2011station thermal calibration bench for MCB overload testing. Programmable current (0\u2011500A), timing accuracy \u00b10.1%, data recording, safety protection.<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Alimentation \u00e9lectrique<\/th>\nAC 220V \u00b110%, 50Hz<\/td>\n<\/tr>\n
Air supply pressure<\/th>\n0.2 \u2013 0.8 MPa (for pneumatic clamps, optional)–\n <\/td>\n<\/tr>\n
Rated power per station<\/th>\n1 kVA (standard)–\n <\/td>\n<\/tr>\n
Maximum output current per station<\/th>\nUp to 500A (configurable, true RMS)–\n <\/td>\n<\/tr>\n
Current display range<\/th>\n0.01 \u2013 500A (true RMS value)–\n <\/td>\n<\/tr>\n
Time display range<\/th>\n1 second \u2013 9 hours 59 minutes 59 seconds–\n <\/td>\n<\/tr>\n
Pr\u00e9cision du chronom\u00e9trage<\/th>\n\u00b10.1% of reading–\n <\/td>\n<\/tr>\n
Overall measurement accuracy<\/th>\n\u00b11.0% (current)–\n <\/td>\n<\/tr>\n
Distorsion de la forme d'onde (THD)<\/th>\n< 3%–\n <\/td>\n<\/tr>\n
r\u00e9sistance d'isolation<\/th>\n> 10 M\u03a9–\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Principaux avantages techniques<\/h2>\n
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Multi\u2011station parallel testing<\/h4>\n

The modular design allows 4\u201116 independent test stations, each with its own current source and timer. This drastically reduces per\u2011unit test time and increases throughput \u2013 essential for high\u2011volume MCB production lines.\n <\/p><\/div>\n

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Exceptional current stability & low distortion<\/h4>\n

The constant current source delivers stable output over long test durations (drift <2% over 8 hours) with total harmonic distortion below 3%. This ensures accurate bimetal heating and repeatable trip times per IEC standards.\n <\/p><\/div>\n

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Comprehensive safety & data management<\/h4>\n

Built\u2011in overload, over\u2011temperature, and short\u2011circuit protection automatically cut power in fault conditions. The data recording system logs trip time, test current, and pass\/fail status for each station, enabling SPC analysis and quality traceability.\n <\/p><\/div>\n

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User\u2011friendly control & flexible test profiles<\/h4>\n

The HMI touch screen allows programming of test current, trip time windows, and pre\u2011test dwell times. Operators can run standard 100% \/ 135% In sequences or custom profiles for R&D. One\u2011key start for routine QC tests.\n <\/p><\/div>\n<\/p><\/div>\n

<\/p>\n

\n Reconnue par les leaders du secteur<\/span><\/p>\n
\n
\n \"ABB\"\n <\/div>\n
\n \"DELIXI\"\n <\/div>\n
\n \"EKF\"\n <\/div>\n
\n \"KRIPAL\"\n <\/div>\n
\n \"HPL\"\n <\/div>\n
\n \"CHAC\"\n <\/div>\n
\n \"Schneider\"\n <\/div>\n
\n \"IEK\n <\/div>\n
\n \"SUNIR\"\n <\/div>\n
\n \"Bevone\"\n <\/div>\n
\n \"Weg\"\n <\/div>\n
\n \"HUYU\"\n <\/div>\n
\n \"RAAD\"\n <\/div>\n
\n \"WALTONE\"\n <\/div>\n
\n \"HAVELLS\"\n <\/div>\n
\n \"C&S\n <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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Customer Success Story \u2013 MCB Manufacturer<\/h3>\n

Due to inconsistent thermal trip calibration, a top manufacturer of MCBs had high levels of rework. The old calibration bench had a very unstable current (drifting over 5%) and contained only one testing position. When Benlong delivered an 8-station long-term thermal calibration bench with closed loop current control and data logging to them, this was their result after doing so for three months.<\/p>\n

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8\u00d7<\/strong> Throughput (single to 8 stations)<\/div>\n
99.5%<\/strong> Rendement du premier passage (en hausse par rapport \u00e0 92%)<\/div>\n
-70%<\/strong> Rework labor<\/div>\n<\/p><\/div>\n

The bench paid for itself in 9 months and passed IEC audit with full traceability records.<\/p>\n<\/p><\/div>\n

Applications et int\u00e9gration<\/h2>\n
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MCB manufacturing QC<\/strong> \u2013 Routine thermal calibration on production lines<\/div>\n
Type test laboratories<\/strong> \u2013 Certification testing per IEC 60898\u20111<\/div>\n
Validation de la R&D<\/strong> \u2013 Characterizing new bimetal materials<\/div>\n
Inspection \u00e0 r\u00e9ception<\/strong> \u2013 Verifying purchased MCBs meet trip curves<\/div>\n<\/p><\/div>\n<\/p><\/div>\n

Ing\u00e9nierie et livraison sur mesure<\/h2>\n
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1. Analyse des besoins<\/strong> 10-20 days \u00b7 MCB ratings, test volume, number of stations<\/div>\n
2. Current source & station design<\/strong> 15-30 days \u00b7 4\u201116 stations, cooling system<\/div>\n
3. Fabrication<\/strong> 30 \u00e0 45 jours<\/div>\n
4. Pre\u2011FAT<\/strong> \u00c0 l'usine de Benlong<\/div>\n
5. Installation et formation<\/strong> On-site 3\u20115 days<\/div>\n
6. SAT final<\/strong> 3\u20115 days \u00b7 acceptance report<\/div>\n<\/p><\/div>\n
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Request a Custom MCB Long\u2011Time Calibration Bench Quote<\/h2>\n

Our engineers will build a testing bench based on your MCB specifications (current ratings and test volume) using the best combination of testing locations per product, current range, and data logging \u2013 also including an ROI analysis.<\/p>\n

Renseignez-vous d\u00e8s maintenant<\/a><\/p>\n

WhatsApp\u00a0: +86\u00a0150\u00a05837\u00a00007 | Courriel\u00a0: xsb@benlongkj.cn | Assistance en anglais et en chinois<\/p>\n<\/p><\/div>\n

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Why Choose Benlong for MCB Calibration Benches?<\/h3>\n