{"id":53,"date":"2026-06-01T10:37:52","date_gmt":"2026-06-01T10:37:52","guid":{"rendered":"https:\/\/khkrh7q1ur.wpdns.site\/product\/mcb-manual-thermal-trip-calibration-bench\/"},"modified":"2026-06-09T23:55:19","modified_gmt":"2026-06-09T23:55:19","slug":"mcb-manual-thermal-trip-calibration-bench-product","status":"publish","type":"product","link":"https:\/\/benlongkj.com\/vi\/san-pham\/mcb-manual-thermal-trip-calibration-bench-product\/","title":{"rendered":"B\u00e0n hi\u1ec7u chu\u1ea9n ng\u1eaft nhi\u1ec7t th\u1ee7 c\u00f4ng MCB"},"content":{"rendered":"
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Short\u2011time delay \u00b7 Manual operation<\/div>\n

MCB Manual Short\u2011Time Delay Thermal Trip Calibration Bench<\/h1>\n

The MCCB Manual Thermal Trip Calibration Test Bench is an instrument developed to perform long delays on Miniature Circuit Breakers (‘MCB’) by evaluating and measuring their short\u2010term delay via a manual method. The MCB will demonstrate delay trip characteristics through user\u2010defined test parameters of overload current and time duration in a controlled overload environment or condition. Test parameters are displayed digitally, maintaining a clean test channel, with an interface providing accurate measurements relating to the time duration of short term delay. The fabrication of this MCB Manual Calibration Test Bench is durable and easy to operate; thus being ideal as an analysis and inspection laboratory for small production output. Therefore, certifying the MCB meets the standards of short-term delay testing per IEC 60898\u20101 thus making it an independent, objective manner of confirming that MCB will operate safely and correctly under the designed conditions.<\/p>\n

This bench allows you to adjust the current manually (or digitally) with either a variable resistor or encoder, gives you a display of real time trip time on the LCD display, and optionally also has an audible alarm to indicate if the test passed or failed. The bench is designed to be compact, easy to transport, and suitable to be used in the field as well as in research & development laboratories (R&D), and for low volume production lines where flexibility is more important than fully automated testing. Common uses for the bench would be performing a batch sampling or verifying prototypes, and maintaining the short time trip characteristics of MCBs.<\/p>\n

Standard delivery: 30-45 days | Manual current setting | Digital timer \u00b10.1%<\/span><\/p>\n<\/p><\/div>\n

\n \"MCB<\/p>\n
Manual short\u2011time delay test bench (actual product)<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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What is an MCB Manual Thermal Trip Calibration Bench?<\/h2>\n

The MCB Manual Thermal Trip Calibration Test Bench is a basic testing apparatus used to verify the short time delay (thermal overload) characteristic of miniature circuit breakers. The MCB manual thermal trip calibration test bench is fundamentally different from automatic test benches in that the MCB manual thermal trip calibration test bench requires the operator to manually set the test current (for example, using a dial or by entering it digitally), and to observe the trip time on a digital timer. It is designed to be used for low volume applications and therefore requires that the test bench be flexible, easy to use, and cost effective. The MCB manual thermal trip calibration test bench includes a stable constant current source, a digital timer with an accuracy of \u00b10.1%, and a simple fixture for connecting the MCB. The MCB manual thermal trip calibration test bench is commonly used in small laboratories, field maintenance, and as a backup for production lines. As a non-standard custom solution, we can customize the current range, fixture, and timer to meet your specific MCB ratings and testing requirements.<\/p>\n

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\n Manual current setting<\/strong><\/p>\n

Potentiometer or digital encoder for precise overload current selection.<\/p>\n<\/p><\/div>\n

\n Digital timer<\/strong><\/p>\n

Clear LED or LCD display, accuracy \u00b10.1%, range up to 99 hours.<\/p>\n<\/p><\/div>\n

\n Stable test channels<\/strong><\/p>\n

Constant current source with low drift (<2% over 8 hours).<\/p>\n<\/p><\/div>\n

\n Compact & portable<\/strong><\/p>\n

Lightweight design for field service or lab bench use.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

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Key Features & Calibration Process<\/h2>\n
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\n \"Intelligence<\/p>\n
Intelligence & Visibility<\/div>\n<\/p><\/div>\n
\n \"Efficiency<\/p>\n
Efficiency & Sustainability<\/div>\n<\/p><\/div>\n
\n \"Design<\/p>\n
Design & Integration<\/div>\n<\/p><\/div>\n
\n \"Safety<\/p>\n
Safety & Reliability<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n

Technical Specifications<\/h2>\n
Manual short\u2011time delay calibration bench for MCBs. Programmable current (up to 125A), digital timer (\u00b10.1%), stable current source, portable design.<\/div>\n
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Test current range<\/th>\n0 \u2013 125A (customizable up to 200A)<\/td>\n<\/tr>\n
Current setting<\/th>\nManual potentiometer or digital encoder (step 0.1A)\n <\/td>\n<\/tr>\n
Timing range<\/th>\n0.1s \u2013 9999s (or up to 99 hours)\n <\/td>\n<\/tr>\n
Timing accuracy<\/th>\n\u00b10.1% of reading\n <\/td>\n<\/tr>\n
Display<\/th>\nLED or LCD digital timer, current readout optional\n <\/td>\n<\/tr>\n
Test modes<\/th>\nNo\u2011trip check (100% In) and trip test (135% In or user\u2011set)\n <\/td>\n<\/tr>\n
Fixture type<\/th>\nManual screw\u2011type clamps for 1P\/2P\/3P\/4P MCBs\n <\/td>\n<\/tr>\n
Power supply<\/th>\n220V \u00b110% 50Hz\n <\/td>\n<\/tr>\n
Dimensions (L\u00d7W\u00d7H)<\/th>\nApprox. 400mm \u00d7 350mm \u00d7 200mm (portable)\n <\/td>\n<\/tr>\n
Weight<\/th>\nApprox. 15kg\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Core Technical Advantages<\/h2>\n
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Simple manual operation \u2013 no training required<\/h4>\n

Technicians can use this bench without having prior experience using automated equipment. Simply turn the dial to the current value and push the Start button; the time it takes to complete the task will be displayed as well as whether the trip timing met the pass\/fail criteria on the timer (or an additional buzzer that could be added as an option).<\/p>\n<\/p><\/div>\n

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Stable current for repeatable results<\/h4>\n

The constant current source has a high level of accuracy and will keep the set current at \u00b12% during long duration tests. The waveform has very little distortion (<\/p>\n<\/p><\/div>\n

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Versatile fixture for multiple MCB types<\/h4>\n

Manual clamps allow for changes in MCB size (1P\/2P\/3P\/4P) without requiring new tooling. Adjustable contacts allow you to accommodate different terminal spacing (17.5 mm \u2013 25 mm).<\/p>\n<\/p><\/div>\n

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Affordable & portable for field use<\/h4>\n

The bench weighs only 15 kilograms and can be transported to job sites easily. An optional carrying case and battery-operated timer are available for off-grid testing of the bench.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

<\/p>\n

\n Trusted by industry leaders<\/span><\/p>\n
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\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 Electrical Contractor<\/h3>\n

A contractor wanted to test short-term delay trips on mini circuit (MCB) in the field after lightning strikes. The customer needed a portable battery-operated bench. Benlong supplied the customer with a manual thermal trip test bench for calibration and had an internally mounted rechargeable battery pack, both designed for use in a rugged way. The results of these benches after six (6) months were:<\/p>\n

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200+<\/strong> Field tests performed<\/div>\n
100%<\/strong> Defective breakers identified<\/div>\n
12 months<\/strong> Battery life (rechargeable)<\/div>\n<\/p><\/div>\n

The bench paid for itself in 4 months by preventing nuisance trips and unnecessary replacements.<\/p>\n<\/p><\/div>\n

Applications and Integration<\/h2>\n
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Small\u2011batch MCB manufacturing<\/strong> \u2013 Low\u2011volume calibration and sampling<\/div>\n
Electrical field service<\/strong> \u2013 On\u2011site verification of trip characteristics<\/div>\n
R&D laboratories<\/strong> \u2013 Prototype testing and curve characterization<\/div>\n
Technical schools & training<\/strong> \u2013 Student hands\u2011on learning of overload protection<\/div>\n<\/p><\/div>\n<\/p><\/div>\n

Custom Engineering & Delivery<\/h2>\n
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1. Requirement analysis<\/strong> 5-10 days \u00b7 current range, timer type, portable options<\/div>\n
2. Design & fixture selection<\/strong> 10-20 days \u00b7 custom current source, clamps<\/div>\n
3. Manufacturing<\/strong> 30-45 days<\/div>\n
4. Pre\u2011FAT<\/strong> At Benlong factory<\/div>\n
5. Installation & training<\/strong> On-site 1\u20112 days<\/div>\n
6. Final SAT<\/strong> 1\u20112 days \u00b7 acceptance report<\/div>\n<\/p><\/div>\n
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Request a Custom Manual Calibration Bench Quote<\/h2>\n

Please provide your MCB rating, test current range, and any portability requirements. Our engineers will create a simple, reliable manual thermal trip bench for you along with a complete ROI.<\/p>\n

I hope the above complies with your request! Best, [Your Name]<\/p>\n

Inquire Now<\/a><\/p>\n

WhatsApp: +86 150 5837 0007 | Email: xsb@benlongkj.cn | English & Chinese support<\/p>\n<\/p><\/div>\n

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