Break Circuit
Todays deals on Break Circuit?
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THPMMF76 General Electric Insulated Case Circuit Breaker 3P 600V 2500A Hi-Break $6,750.00 |
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MHL3650032DC1625 Square D Molded Case Circuit Breaker 500A 3P 600V Hi-Break $3,150.00 |
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MHL365003901 Square D Circuit Breaker MHL 500A 3P 600V Hi-Break MA11286 $2,450.00 |
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GE General Electric Power Break TPRR 6620 E1 2000 Amp Circuit Breaker $1,900.00 |
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Westinghouse NB3800PF Tri Break Circuit Breaker $1,980.00 |
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GE General Electric TB43225AF14 Green Label Tri Break Circuit Breaker $1,550.00 |
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GE General Electric TB43225 with Shunt Trip Tri Break Circuit Breaker $1,200.00 |
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GE General Electric TB43125 Tri Break Circuit Breaker $1,100.00 |
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GE General Electric TB43150 Tri Break Circuit Breaker $1,100.00 |
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GE General Electric TB43175 Tri Break Circuit Breaker $1,100.00 |
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GE General Electric TB43200 Tri Break Circuit Breaker $1,100.00 |
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GE General Electric TB43225 Tri Break Circuit Breaker $1,100.00 |
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GE General Electric TB43250 Tri Break Circuit Breaker $1,100.00 |
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GE General Electric TB43400 Tri Break Circuit Breaker $1,100.00 |
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Westinghouse LA3400PRF Tri Break Circuit Breaker $1,040.00 |
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GENERAL ELECTRIC TJC36400E CIRCUIT BREAKER MAG-BREAK 400 AMP ***NIB*** $999.00 |
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GE General Electric TB13100AW Tri Break Circuit Breaker $800.00 |
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GE 400 Amp Mag-Break Motor Circuit Protector TJC36400B NEW!!!! $800.00 |
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GE SGHA36AT0600 HI-BREAK CIRCUIT BREAKER 3P 600A 600V $675.00 |
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GE TJC3660H MAG BREAK CIRCUIT BREAKER $675.00 |
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GE General Electric TB13040BWE05 Tri Break Circuit Breaker $600.00 |
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CHALLENGER 225AMP CED3225 240VAC 65K CIRCUIT BREAK $600.00 |
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GE MAG-BREAK MOTOR CIRCUIT PROTECTOR TJC36600G *NICE* $600.00 |
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CHALLENGER 125AMP CED3125 240VAC 65K CIRCUIT BREAK $550.00 |
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CHALLENGER 20AMP CE3020 480VAC 14K CIRCUIT BREAK 3P $450.00 |
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CHALLENGER 30AMP CE3030 480VAC 14K CIRCUIT BREAK 3P $450.00 |
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Crouse Hinds Circuit Breaking Power Connector ARK-trol Receptacle RPC233-014-P07 $449.95 |
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GE Spectra RMS 600A Hi-Break Molded Case Circuit Breaker SGHA36AT0600 $399.99 |
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GE SGHH36AT0400 3 Pole Hi-Break 400A 600V AC Circuit Breaker $424.99 |
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GE SEHA36AT0100 HI-BREAK Circuit Breaker 100A Plug W/Auxliary Switch (NNB) $400.00 |
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GE TB13050BWE09 TRI-BREAK CIRCUIT BREAKER 3 P 50A 600V $359.00 |
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Square D KAL36175 Industrial Electric Thermal Magnetic Molded Case Circuit Break $349.99 |
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GE 400amp tri break circuit breaker $299.00 |
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GE SEHA36AT0100 100A 600V Hi-Break Circuit Breaker SRPE100A $334.99 |
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GE SEHA36AT0100 100 AMP HI-BREAK 600 V CIRCUIT BREAKER $299.90 |
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GE TEC36150 Mag-Break Motor Circuit Protector ~NIB~ $280.00 |
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General Electric Hi-Break THED36090 Circuit Breaker 90AMP 3 Pole $267.74 |
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CROUSE-HINDS CPS152-102 DELAYED CIRCUIT BREAKING RECEPTICAL CONNECTOR $255.00 |
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GE TRI-BREAK TB 225A 225 AMP CIRCUIT BREAKER $199.99 |
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GE SPECTRA RMS HI-BREAK CIRCUIT BREAKER SFHA36AT0250 250A $229.00 |
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General Electric GE Spectra SEHA36AT0150 Hi-Break Circuit Breaker 150 Amp 600V $241.99 |
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GE TRI-BREAK TB 200A 200 AMP CIRCUIT BREAKER $175.00 |
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GE TRI-BREAK TB 125A 125 AMP CIRCUIT BREAKER $175.00 |
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RCD /LOOP resistance Circuit Break leakageTrip-Out current time tester fit FLUKE $215.46 |
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2 COOPER ARKTITE CPS14R CIRCUIT BREAKING RECEPTACLES $199.00 |
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NIB WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAK HFD3030L $189.00 |
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GE Hi-Break Molded Case Circuit Breakers THED124015 $199.99 |
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GE MAG-BREAK CIRCUIT BREAKER SELA36AI0060 *NEW* $199.00 |
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GE General Electrics SEHA 36AT0100 Spectra RMS Hi-Break Circuit Breaker $189.00 |
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WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAK HFD3030L $169.00 |
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KLÖCKNER MOELLER N6-100 CIRCUIT BREAK N6 100 $136.00 |
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Moeller Miniature Circuit Break E61-16/1N/C (E61161NC) $172.00 |
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NIB GE CIRCUIT BREAKER HI-BREAK THED136020 20 AMP 3 P $149.00 |
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NIB GE CIRCUIT BREAKER HI-BREAK THED136020 20 AMP 3 P $149.00 |
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HCB3100 CHALLENGER 100 AMP 240VAC 3 POLE CIRCUIT BREAK $150.00 |
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CROUSE HINDS DELAYED ACTION CIRCUIT BREAKING PLUG (QTY 2) CPP512 (NIB) $149.99 |
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GE TJC36400B MAG-BREAK MOTOR CIRCUIT PROTECTOR 400 AMP $135.00 |
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ABB Miniature Circuit Break S264-D32 (S264D32) NIB! $157.00 |
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Moeller Miniature Circuit Break ED6-10/1N/C/003 (ED6101NC003) NIB! $153.00 |
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SPECTRA-RMS HI-BREAK CIRCUIT BREAKER 600A SGHA36AT0600 $153.00 |
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250 Amp GE Spectra RMS High Break Circuit Breaker $150.00 |
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GE Spectra SELA36AI0060 RMS Mag-Break Circuit Breaker 60 Amp 600 Volt New $149.99 |
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NIB CROUSE HINDS #CPP516 DELAYED ACTION CIRCUIT BREAKING PLUG EXPLOSION PROOF $125.00 |
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SPECTRA-RMS HI-BREAK CIRCUIT BREAKER 600A SGHA26at0600 $139.99 |
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ABB Miniature Circuit Break S284-C80 (S284C80) NIB! $138.00 |
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GE 150 Amp Mag-Break Circuit Breaker TEC36150 $125.00 |
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General Electric Mag-Break Motor Circuit Protector TEC36003 3Amps 3 Poles 600 AC $125.00 |
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GE TEC36015 Industrial Circuit Breaker MAG BREAK 3 POLES 15 AMP 600V AC $135.99 |
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GE Spectra RMS SELA36AI0150 MAG-BREAK CIRCUIT BREAKER 150 Amp 600 VAC $125.00 |
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ABB Miniature Circuit Break S264UC-B63 (S264UCB63) NIB! $130.00 |
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SPECTRA-RMS HI-BREAK CIRCUIT BREAKER 600A SGHA36AT0600 $127.50 |
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GE 15 Amp Mag-Break Circuit Breaker TEC36015 $115.00 |
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GE 7 Amp Mag-Break Circuit Breaker TEC36007 $115.00 |
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GE TB13020AW Tri-Break Circuit Breaker $90.00 |
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ABB Miniature Circuit Break S264UC-B1 (S264UCB1) NIB! $122.00 |
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ABB Miniature Circuit Break S264UC-B4 (S264UCB4) NIB! $122.00 |
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ABB Miniature Circuit Break S264UC-C3 (S264UCC3) NIB! $121.00 |
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ABB Miniature Circuit Break S264UC-C50 (S264UCC50) NIB! $121.00 |
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CROUSE HINDS APJ-3355-R2 APJ3355 ARKTITE HEAVY DUTY CIRCUIT BREAKING POWER MATIN $120.00 |
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GE THED136015 HI-BREAK Circuit Breaker 3 Pole 15 A New Panel Take Outs NEW $100.00 |
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GE TEC36007 Mag-Break Circuit Breaker 7A 3P New $110.00 |
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HI-BREAK CIRCUIT BREAKER THED124015 $99.99 |
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2034 EH3B020 SIEMENS/ITE 20A 3 POLE 480V CIRCUIT BREAK $100.00 |
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ABB Miniature Circuit Break S263-D10 (S263D10) NIB! $111.00 |
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GE THED136040 HI-Break Circuit Breaker 400A 3 Pole 600V $109.99 |
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Crouse-Hinds CPH7734 Arktite Circuit Breaking Plug NIB $109.10 |
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GE Hi-Break THED124030WL 30 A 2 P Circuit Breaker $100.00 |
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GE TRI-BREAK CIRCUIT BREAKERS TB13040BWE05 TYPE 2 $100.00 |
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Federal Pacific NEF433015 2P 15A NEF 480V Circuit Break $99.99 |
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GE Spectra RMS SELA36AI0060 MAG-BREAK CIRCUIT BREAKER 60 Amp 600 VAC $89.95 |
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GE THED136030 Hi-Break Circuit Breaker 30Amp 600VAC $89.00 |
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OMRON D4A-1101N GENERAL PURPOSE LIMIT SWITCH SPDT 2-CIRCUIT DOUBLE BREAK NEW $99.00 |
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OMRON D4A-1110N GENERAL PURPOSE LIMIT SWITCH 2-CIRCUIT DOUBLE BREAK – NEW $99.00 |
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ABB Miniature Circuit Break S264UC-B20 (S264UCB20) NIB! $98.00 |
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NIB GE CIRCUIT BREAKER HI-BREAK THED124015 WL 15 AMP $85.00 |
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GE SPECTRA RMS HI BREAK CIRCUIT BREAKER SFHA24AT0250 $79.99 |
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ABB Miniature Circuit Break S264UC-C16 (S264UCC16) NIB! $92.00 |
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GE Hi-Break Circuit Breaker TED134040 40amp $90.00 |
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GE Spectra RMS SELA36AI0030 MAG-BREAK CIRCUIT BREAKER 30 Amp 600 VAC $79.95 |
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ABB Miniature Circuit Break S264H-D40 (S264HD40) NIB! $88.00 |
Break Circuit Questions
Air Circuit Breaker
Normally we are not used to seeing accidental explosions or fire blazing in our home or office when the current jumps above the safe level or when there are any other faults in the electrical system. When these accidental incidents are about to happen the circuit breaker cuts the power to the electrical system. Without circuit breakers (or the alternative, fuses), household electricity would be impractical because of the potential for fires and other mayhem resulting from simple wiring problems and equipment failures. It is one of the most important safety mechanisms either in the primary source of electricity or in the electrical distribution systems from where electricity is distributed in our home or in our home.
Air circuit breaker: When the breaker opens the current flow is interrupted that causes an electrical arc to be generated. This arc is cooled and extinguished in a controlled way, so that the gap between the contacts can again withstand the voltage in the circuit. When the fault condition is fixed, the contact is again closed to restore power to the interrupted circuit. When a circuit breaker uses compressed air to extinguish the arc the circuit breaker is called air circuit breaker (ACB).
Construction: Each phase of a three-phase Air Circuit Breaker (ACB) consists of 3 types of contacts, namely; main contacts which carry the load current, arcing contacts and the arcing horn.
The main contacts: Under normal operation the main contacts carry the load current. Therefore, main contact resistance must be low enough to prevent overheating, when current is flowing through it. The main contacts are therefore made up of a good conducting material such as copper, silver or copper with silver plating. Since these metals have relatively lower melting points, they can be damaged if arcing occurs. To prevent this damage, the main contacts do not make or break the current.
Arcing Contacts: Since no arcing must occur at the main contacts, arcing contacts are provided, which make or break the circuit current.
Arcing Horns: After the arc is established on the arcing contacts, it is transferred to the arcing horns during the opening of the arcing contacts. Their shape is designed to weaken or extinguish the arc.
Arc chute: The arc chute is a cooling chamber located at the top end of the breaker. It cools the hot gases which are produced when arcing occurs.
Operating mechanism: To understand the sequence of operation of various contacts in the air circuit breaker, one must realize that arcing must never occur at the main contacts.
Opening cycle: When the breaker is closed, the load current is conducted by the low resistance main contacts. But when the breaker opens, the main contacts open first and transfer the current to the arcing contacts. The arcing contacts open and an arc is established across the arcing horns. The arc rises to the top of the arcing horns and enters the arc chute where it is rapidly cooled by heat transferring mechanism in the cooling plates. Cooled gas deionizes that makes it unable to conduct electricity, and consequently arc is extinguished.
Closing cycle: In the closing cycle, the arcing contacts touch first to make the circuit again. Then the main contacts close and enable the circuit to flow electrical current.
Advantages of Air Circuit Breaker (ACB) over the other circuit breakers
* Relatively inexpensive
* Simple installation
* Simple construction
* Simple maintenance requirements
Uses:
Air Circuit Breakers (ACB) are used in both low and high voltage current. They are commonly used in electrical distribution systems and NGD for voltage up to 15 KV. Air circuit breakers (ACB) which include operating mechanisms are mainly exposed to the environment. They protect for overload, short circuit and earth fault/ground fault. Most of air circuit breakers are used in indoor type substations.
About the Author
Thomas Scott invites you to take a look at O-SUNG Electric Machinery Co Ltd. Air Circuit Breaker of OSEMCO’s external structure consists of numerous parts including; digital protection relay, Arc extinguishing chamber and auto connector.
Break Circuit Videos
Copyright – Circuit Break (One Track Minds EP)
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