Circuit Breaker

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  • 6290 - Micro-Ohmmeters The high-current Micro-Ohmmeter Model 6290 is a portable, microprocessor-controlled instrument. It has optimized filters and protection for measurements in electrical substations. The Model 6290 can be used to accurately measure very low contact resistances of high voltage circuit breakers, switches, busbars, etc., with test currents up to 200A.

    Measurement accuracy is guaranteed through a state-of-the-art signal amplification system, offset-free with high long-term stability. Resistance readings are shown in the alphanumeric display with up to 4½-digit resolution. It allows measurement resistances up to 20mΩ, and resolution of 0.1µΩ.
    AEMC Instruments
  • CBA 2000 - HV Circuit Breaker Analyzer and Microhmmeter This circuit breaker diagnostic system is designed to grant the highest accuracy while testing circuit breaker. It can perform static and dynamic contact resistance measurement and it's a precise timing speed and motion analyzer. Circuit breaker timing test set CBA 2000 is worldwide acknowledged as the perfect solution when a complete and reliable diagnostics has to be performed on circuit breakers.
    ISA Srl
  • CBA 1000 - Circuit Breaker Analyzer and Microhmmeter This circuit breaker timing test equipment is a reliable and very accurate operating device for the maintenance and commissioning of circuit breakers in medium and high voltage substation. It can perform static and dynamic contact resistance measurement and it's an accurate timing speed and motion analyzer.
    ISA Srl
  • HYGK-307 - Circuit breaker analyzer Test Functions
    1) Test standard: IEC62271
    2) Closing and opening time measurement of 12 channels
    3) Max difference of closing or opening time measurement of three phases
    4) C-O and O-C time measurement
    5) Rated operation sequence test
    6) Bounce time and frequency measurement of breaker closing
    7) Circuit breaker closing and opening speed measurement
    8) Travel-time, Coil current-time curve of circuit breaker operation measurement
    9) Travel and clearance of circuit breaker measurement
    10) Variable DC circuit breaker operation power supply
    11) Closing arc resistance value and connected time measurement
    12) Closing time and opening time of graphite circuit breaker measurement
    13) Print test results by internal micro printers
    Wuhan Huaying Electric
  • ZD2C - Contact Resistance Tester easure the resistance of circuit breaker contacts,switchgear contacts and bus-bar joints.
    Shijiazhuang Handy
  • KM 1520 - DIGITAL EARTH RESISTANCE TESTER Capable of measuring earth voltage(Vac). * 2 mA measuring current permits earth resistance to test without tripping earth leakage current circuit breakers in the circuit. * Battery operated.
    Kusam-meco
  • LS100A-LS200A - Contact Resistance Meter Contact Resistance Meter is useful for Contact resistance Measurement of circuit breakers,Joints at test current 100Amp/200Amp
    Sivananda Electronics
  • GKC433A - High Voltage Breaker Tester 1. GKCHD433A high voltage circuit breaker analyzer applies to mechanical and characteristic testing for sulphur hexafluoride, vacuum circuit breaker, bulk oil circuit breaker, oil minimum circuit breaker and isolating switch. 2. Measure the time parameters (close, open, asynchronous, bounce, pre-insert time) of 12 main contacts and 6 resistive contacts. Measure the co-operate time between 6 main- and auxiliary contacts. 3. Measure the resistance and pre-insert time of 6 resistive contacts. 4. There is an analog input channel. Measure the travel, over-travel, rebound, overshoot, speed of the breaker by using resistance transducer. 5. Operate Close, Open, O-C-O, O-C, C-O control sequences. 6. Test the mechanical characteristic operated by breaker manually. 7. Edit and store 50 speed definitions of breakers.
    Shijiazhuang Handy
  • 2720ER - Digital Earth Resistance Tester The Model 2720ER Digital Earth Resistance Tester is capable of measuring earth resistance. 2mS measuring current permits current permits the testing if earth resistance without tripping earth leakage current circuit breakers in the circuit under test.
    Hoyt Electrical Instrument
  • 4105 - ER Analog Earth Resistance Tester The Model 4105 ER Analog Earth Resistance Tester is capable of measuring earth resistance. 2mS measuring current permits current permits the testing if earth resistance without tripping earth leakage current circuit breakers in the circuit under test.
    Hoyt Electrical Instrument
  • DMOM-600 - DC Micro-Ohmmeter The DMOM-600 is specifically designed for testing EHV circuit-breaker contact resistances, bushing contact joints, welding joints, or for any low-resistance measuring application. This high current and very lightweight (33 lbs/ 15 Kg) micro-ohmmeter is designed to meet the IEEE C57.09-1999 (5.15) requirement for testing circuit breaker contact resistance.
    Vanguard Instruments
  • HYHL-200A - Contact resistance tester Contact resistance tester output DC 200A/100A current to test the contact resistance of circuit breaker or high current cable contacts. It is designed according to IEC62271. The main application of the tester is measurement of circuit breaker contact resistance. All the test results of the tester could be print by the micro-printer which is integrated in the tester. Also all the test results saved in the tester could be upload to PC computer and then convert to MS WORD document.
    Wuhan Huaying Electric
  • GKC433E - HIGH VOLTAGE CIRCUIT BREAKER TESTER 1. GKC433E high voltage circuit breaker analyzer applies to mechanical and characteristic testing for sulphur hexafluoride, vacuum circuit breaker, bulk oil circuit breaker, oil minimum circuit breaker and isolating switch. 2. Measure the time parameters (close, open, asynchronous, bounce, pre-insert time) of 12 main contacts and 6 resistive contacts. Measure the co-operate time between 6 main- and auxiliary contacts. 3. Measure the resistance and pre-insert time of 6 resistive contacts. 4. There are one analog input channels, one digital input channels. Measure the motion travel, over-travel, rebound, overshoot and speed of the breaker by using resistance transducers. 5. Operate Close, Open, O-C-O, O-C, C-O control sequences. 6. Test the mechanical characteristic operated by breaker manually. 7. Edit and store 50 speed definitions of breakers. 8. Built-in DC control output, regulate range 0~270V, can used for trip voltage testing. 9. Built-in DC output for motor energy storage.
    Shijiazhuang Handy
  • 1020 - 3 in 1 Electrical tester with circuit breaker An easy to use and safe Multimeter with integrated protection frames pocket sized for AC/DC voltage-, current- and resistance measurements, and non-contact voltage detection, with built-in flashlight.
    PeakTech Prüf- Und
  • 9052-UC - DMOM-200 S3 The DMOM-200 S3 is Vanguard’s fourth generation, microprocessor-based, true DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistances, bushing contact joints, welding joints, or for any low-resistance measuring application. This high current and very lightweight (19.8 lbs/ 8.9 Kg) micro-ohmmeter is designed to meet the IEEE C57.09-1999 (5.15) requirement for testing circuit breaker contact resistance.
    Vanguard Instruments
  • 9051-UC - DC Micro-Ohmmeter The Auto-Ohm-200 S3 is Vanguard’s fourth generation, microprocessor-based, true DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistances, bushing contact joints, welding joints, or for any low-resistance measuring application. This high current and very lightweight (16.8 lbs/ 7.6 Kg) micro-ohmmeter is designed to meet the IEEE C57.09-1999 (5.15) requirement for testing circuit breaker contact resistance.
    Vanguard Instruments
  • 1820 ER - Digital Earth Resistance Tester Capable of measuring earth voltage (Vac). 2mA measuring current permits testing of the earth resistance without tripping earth leakage current circuit breakers in the circuit. In addition to the facility for precision measurement, test leads for simplified two wire measuring system are also supplied as standard accessories.
    Hoyt Electrical Instrument
  • R1L-BR - Microohmmeter and Bond Tester with Rugged Case The R1L-B series Ohmmeter/Bonding Tester is a digital microohmmeter designed to measure resistances from 10 μΩ to 20 Ω. It is used in applications such as metal bonding, switch, circuit breaker, circuit resistance and other contact and connection resistance tests as well as higher resistance measurements for circuit analysis and resistor testing up to 20 Ω. The instruments utilize the four-terminal, Kelvin technique to eliminate errors caused by the resistance of the leads. Resistance readings are viewed on a 3 1/2 digit display,
    TEGAM
  • DT-9052 - Earth and Continuity Tester Principle of measurement by “fault loop” for installations with neutral as per diagram indication Earth loop measurement current less than the drop-out threshold of the 30mA circuit breakers Measurement of the earth resistance by 3 1/2 digit display from 0 to 1999Ω (resolution 1Ω measurement updated every 1.5s)
    Shenzhen Everbest
  • MPK-254 - 5 A portable digital micro-ohmmeter The MPK-254 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of  switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using  test currents from 1 mA up to 5 A. 
    Megabras Srl
  • MPK-253 - 10 A portable digital micro-ohmmeter The MPK-253 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of  switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using  test currents from 1mA up to 10 A.
    Megabras Srl
  • MM600 - Micro-Ohm Meter In response to ever growing demands for safer and more accurate methods of testing circuit breakers, Weis has developed the Self Powered MM600 portable micro-ohm meter. It is used for measurement of resistance (μΩ) by injecting a heavy current through a breaker contact or load carrying joint.
    Weis Gmbh & Co
  • MRM-100 - 100 Amp Digital Microhmmeter Phenix Technologies’ Model MRM-100 uses a low voltage, high current power supply to run a user-defined test current of between 10 Amps to 105 Amps (selectable in 1 Amp steps) to test circuit breaker contact resistance, or in any application where low resistance current measurement up to just over 100 Amps is required. Our highly accurate, microprocessor based test system is your contact resistance testing solution.
    Phenix Technologies
  • HISAC Ultima - Circuit Breaker Dynamic Contact Resistance Meter Universal Circuit Breaker Oerational Analyser to test all types of CBs - LV, HV, EHV & UHV. Quick performance check of CB by measuring C, O, C-O, O-C & O-C-O timings. Dynamic Contact Resistance Measurement for condition monitoring of the contacts without opening the interrupter. Analysis of Travel Characteristic with customized Travel Transducer cum Fixtures. Saves down time & number of operations of CB by testing all the critical performance parameters of all the poles / breaks in a single shot. Healthiness of Auxiliary contact by measurement of Auxiliary contacts timings. Healthiness of Close / Trip coils of all three poles monitored simultaneously. Laptop operated. Results are immidiately displayed on the screen. Contact Resistance of main contacts. Useful to shift maintenance schedule form Time based to Condition based. Designed to work reliably under live EHV switchyard conditions ensuring operator's safety and repeatability of results.
    Scope T&M Pvt Ltd

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Circuit Breaker - A switch automatically thrown in the event of a short or overload.