{"id":1160,"date":"2026-07-18T06:17:50","date_gmt":"2026-07-18T06:17:50","guid":{"rendered":"https:\/\/benlongkj.com\/?post_type=product&p=1160"},"modified":"2026-07-18T06:17:53","modified_gmt":"2026-07-18T06:17:53","slug":"mccb-lab-test-machine-product","status":"publish","type":"product","link":"https:\/\/benlongkj.com\/ar\/product\/mccb-lab-test-machine-product\/","title":{"rendered":"MCCB Laboratory Integrated Testing bench"},"content":{"rendered":"
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MCCB testing \u00b7 Laboratory equipment<\/div>\n

MCCB Laboratory Integrated Testing Bench for Magnetic Trip, Thermal & Long-Term Calibration<\/h1>\n

The MCCB laboratory integrated testing bench combines three MCCB protection tests in a single unit: the magnetic trip test (instantaneous), thermal calibration (time-delay), and long-term calibration (long-time-delay). One test function is active at a time, and the bench covers a wide output range \u2014 AC300\u201310000A for instantaneous testing, AC100\u20132000A for time-delay, and AC100\u20131000A for long-time-delay \u2014 so a single bench serves your full molded case circuit breaker range instead of three separate test stations.<\/p>\n

The bench ships with two pneumatic fixture sets (250A-type and 400\/630A-type) for instantaneous and time-delay testing, plus a complete long-term test lead package. Power source accuracy is \u00b13% for instantaneous and \u00b11.5% for time-delay testing. Core components come from established brands \u2014 Chint contactors, Xingchen cylinders, a Tonghui transformer, and a Shunhang instantaneous power supply \u2014 for dependable day-to-day laboratory operation.<\/p>\n

3 test functions in one bench | 250A & 400\/630A fixtures included | Accuracy \u00b11.5% (delay) \/ \u00b13% (instantaneous)<\/span><\/p>\n<\/div>\n

\"MCCB<\/p>\n
MCCB laboratory integrated testing bench \u2014 three test functions in one unit<\/div>\n<\/div>\n<\/div>\n
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What is an MCCB Laboratory Integrated Testing Bench?<\/h2>\n

An MCCB laboratory integrated testing bench is a consolidated test station that verifies the protection characteristics of molded case circuit breakers across three test types that would traditionally require three separate benches. The magnetic trip test applies a high instantaneous current (AC300\u201310000A) to verify the breaker\u2019s short-circuit tripping behavior; thermal calibration applies a time-delay current (AC100\u20132000A) to verify the bimetal-based overload characteristic; and long-term calibration applies a sustained lower current (AC100\u20131000A) for extended-duration verification. The bench operates one function at a time, selected by the operator. For instantaneous and time-delay tests, the breaker is held and contacted by pneumatic fixtures \u2014 a 250A-type and a 400\/630A-type fixture set are both included as standard. For standard long-term tests, the bench outputs through two 500 mm\u00b2 copper bars, and the operator connects the supplied test leads manually. This one-bench architecture is designed for MCCB manufacturers\u2019 laboratories, quality departments, and R&D teams that need calibration-grade accuracy without dedicating floor space and budget to three separate test stations.<\/p>\n

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3-in-1 test coverage<\/strong>
\nMagnetic trip, thermal calibration, and long-term calibration in one bench (one function at a time).<\/div>\n
\u0646\u0637\u0627\u0642 \u062a\u064a\u0627\u0631 \u0648\u0627\u0633\u0639<\/strong>
\nInstantaneous AC300\u201310000A \u00b7 time-delay AC100\u20132000A \u00b7 long-time-delay AC100\u20131000A.<\/div>\n
Calibration-grade accuracy<\/strong>
\nPower source accuracy of \u00b13% (instantaneous) and \u00b11.5% (time-delay).<\/div>\n
Dual fixture sets included<\/strong>
\n250A-type and 400\/630A-type pneumatic fixtures ship with the bench as standard.<\/div>\n<\/div>\n<\/div>\n
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\"\u062a\u0643\u0627\u0645\u0644<\/p>\n
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\"\u0627\u0644\u0633\u0644\u0627\u0645\u0629<\/p>\n
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\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629<\/h2>\n
Integrated MCCB testing bench: magnetic trip (instantaneous), thermal calibration (time-delay), and long-term calibration in one unit. Dual fixture sets, complete lead package, branded core components.<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0645\u0646\u062a\u062c\u0627\u062a \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629<\/th>\nMCCB \u2014 250A-type and 400\/630A-type fixtures included<\/td>\n<\/tr>\n
\u0648\u0638\u0627\u0626\u0641 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631<\/th>\nMagnetic trip test (instantaneous) \/ Thermal calibration (time-delay) \/ Long-term calibration \u2014 one function active at a time<\/td>\n<\/tr>\n
Output current range<\/th>\nInstantaneous: AC300\u201310000A | Time-delay: AC100\u20132000A | Long-time-delay: AC100\u20131000A<\/td>\n<\/tr>\n
Power source accuracy<\/th>\n\u00b13% (instantaneous) | \u00b11.5% (time-delay)<\/td>\n<\/tr>\n
Test connection<\/th>\nPneumatic fixture contact for instantaneous & time-delay tests; standard test output via 2 \u00d7 500 mm\u00b2 copper bars with manual lead connection<\/td>\n<\/tr>\n
Long-term test leads (included)<\/th>\n120 mm\u00b2 \u00d7 4, 240 mm\u00b2 \u00d7 4, 185 mm\u00b2 \u00d7 8 \u2014 each 2 m long; additional leads available on request (please specify the exact product model)<\/td>\n<\/tr>\n
Key components<\/th>\nChint contactors \u00b7 SMC cylinders \u00b7 Tonghui transformer \u00b7 Chroma power supply<\/td>\n<\/tr>\n
\u0645\u0632\u0648\u062f \u0627\u0644\u0637\u0627\u0642\u0629<\/th>\n380V, 120kW<\/td>\n<\/tr>\n
Machine dimensions<\/th>\nL1800 \u00d7 W1500 \u00d7 H1900 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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A typical test cycle on the integrated bench runs as follows:<\/p>\n

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  1. Select the test function<\/strong> \u2013 Choose instantaneous, time-delay, or long-time-delay mode (only one function can be used at a time).<\/li>\n
  2. Mount the MCCB<\/strong> \u2013 Place the breaker in the matching fixture: 250A-type or 400\/630A-type.<\/li>\n
  3. Make the connection<\/strong> \u2013 The pneumatic fixtures contact the breaker automatically for instantaneous and time-delay tests; for standard long-term tests, the operator connects the supplied test leads to the 2 \u00d7 500 mm\u00b2 copper bar outputs.<\/li>\n
  4. Run the test<\/strong> \u2013 The bench applies the set current within the calibrated range and the trip behavior of the breaker is verified.<\/li>\n
  5. Unload and continue<\/strong> \u2013 Remove the tested breaker and proceed with the next unit or switch to another test function.<\/li>\n<\/ol>\n<\/div>\n

    Core Technical Advantages (Laboratory-Grade Design)<\/h2>\n
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    Three benches consolidated into one<\/h4>\n

    Magnetic trip, thermal calibration, and long-term calibration share one cabinet, one power connection, and one operator position \u2014 saving laboratory floor space and equipment investment compared with three separate test stations.<\/p>\n<\/div>\n

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    Full-range MCCB coverage<\/h4>\n

    With instantaneous output up to AC10000A and dual fixture sets for 250A and 400\/630A frames, one bench covers the trip verification needs of a complete MCCB product lineup.<\/p>\n<\/div>\n

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    Calibration-grade source accuracy<\/h4>\n

    \u00b11.5% accuracy on time-delay testing and \u00b13% on instantaneous testing give repeatable, trustworthy calibration results for laboratory and quality-control use.<\/p>\n<\/div>\n

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    Proven branded core components<\/h4>\n

    Chint contactors, Xingchen cylinders, a Tonghui transformer, and a Shunhang instantaneous power supply are used throughout \u2014 established brands that simplify maintenance and spare parts supply.<\/p>\n<\/div>\n<\/div>\n

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    \"HPL\"<\/div>\n
    \"CHAC\"<\/div>\n
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    \"\u0647\u0627\u0641\u064a\u0644\u0632\"<\/div>\n
    \"\u0634\u0631\u0643\u0629<\/div>\n<\/div>\n<\/div>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0648\u0627\u0644\u062a\u0643\u0627\u0645\u0644<\/h2>\n
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    MCCB production QC laboratories<\/strong> \u2013 Routine verification and calibration of trip characteristics<\/div>\n
    Type testing & R&D<\/strong> \u2013 Instantaneous, time-delay, and long-time-delay characteristic verification during development<\/div>\n
    Incoming & outgoing inspection<\/strong> \u2013 Sample-based trip verification for quality assurance<\/div>\n
    Multi-frame product ranges<\/strong> \u2013 250A and 400\/630A frames handled on one bench with the included fixture sets<\/div>\n<\/div>\n<\/div>\n

    \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0648\u0627\u0644\u062a\u0633\u0644\u064a\u0645 \u062d\u0633\u0628 \u0627\u0644\u0637\u0644\u0628<\/h2>\n
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    1. Requirement confirmation<\/strong> MCCB frame sizes, test standards & current ranges<\/div>\n
    2. Technical proposal<\/strong> Bench configuration, fixtures & lead package<\/div>\n
    3. Manufacturing & calibration<\/strong> Built and calibrated at Benlong factory<\/div>\n
    4. \u0627\u0644\u062f\u0647\u0648\u0646 \u0642\u0628\u0644<\/strong> Verification with customer sample breakers<\/div>\n
    5. \u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0648\u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/strong> \u0641\u064a \u0627\u0644\u0645\u0648\u0642\u0639<\/div>\n
    6. \u0627\u062e\u062a\u0628\u0627\u0631 SAT \u0627\u0644\u0646\u0647\u0627\u0626\u064a \u0648\u0627\u0644\u062a\u062f\u0631\u064a\u0628<\/strong> \u062a\u0642\u0631\u064a\u0631 \u0627\u0644\u0642\u0628\u0648\u0644<\/div>\n<\/div>\n
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    Request an MCCB Testing Bench Quote<\/h2>\n

    Tell us your MCCB frame sizes, test standards, and current ranges. Our engineers will configure the integrated testing bench with the right fixtures and test lead package for your laboratory.<\/p>\n

    \u0627\u0633\u062a\u0641\u0633\u0631 \u0627\u0644\u0622\u0646<\/a><\/p>\n

    \u0648\u0627\u062a\u0633\u0627\u0628: +86 150 5837 0007 | \u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a: xsb@benlongkj.cn | \u062f\u0639\u0645 \u0628\u0627\u0644\u0644\u063a\u062a\u064a\u0646 \u0627\u0644\u0625\u0646\u062c\u0644\u064a\u0632\u064a\u0629 \u0648\u0627\u0644\u0635\u064a\u0646\u064a\u0629<\/p>\n<\/div>\n

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    Why Choose Benlong for MCCB Test Equipment?<\/h3>\n