Case Circuit
Todays deals on Case Circuit?
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PCCA33000 Westinghouse Insulated Case Circuit Breaker 3P 600V 3000A PCCA33000F $18,500.00 |
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PC33000 Westinghouse Insulated Case Circuit Breaker 3P 600V 3000A PC33000F $12,700.00 |
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PB31600PRF Westinghouse Insulated Case Circuit Breaker 3P 600V 1600A tri-pac $6,950.00 |
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THPMMF76 General Electric Insulated Case Circuit Breaker 3P 600V 2500A Hi-Break $6,750.00 |
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PB31600PRF Westinghouse Insulated Case Circuit Breaker 600V 1000A trip tri-pac $6,250.00 |
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PBF31400PR Westinghouse Insulated Case Circuit Breaker 3P 600V 1400A tri-pac $5,700.00 |
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NP632000 Federal Pacific Insulated Case Circuit Breaker 3P 600V 2000A Bolt On $5,700.00 |
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3WN6321-0G805-0AA1-Z Siemens Insulated Case Circuit Breaker 3WN6 1250A 65kA $5,265.00 |
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PC32000 Westinghouse Insulated Case Circuit Breaker 3P 600V 2000A PC32000F $4,950.00 |
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SQUARE D MJA36700 NEW MLD CASE CIRCUIT BREAKER 700 AMP 3 POLE 600 VAC $4,160.00 |
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SQUARE D MJA36800 NEW MLD CASE CIRCUIT BREAKER 800 AMP 3 POLE 600 VAC $4,160.00 |
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S6L ABB molded case Circuit Breaker SACE 600A 3P LI Trip Electronic $3,950.00 |
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SQUARE D MGA36700 NEW MLD CASE CIRCUIT BREAKER 700 AMP 3 POLE 240- 600 VAC $3,510.00 |
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SQUARE D MGA36800 NEW MLD CASE CIRCUIT BREAKER 800 AMP 3 POLE 240- 600 VAC $3,510.00 |
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SQUARE D MJA36400 NEW MLD CASE CIRCUIT BREAKER 400 AMP 3 POLE 600 VAC $3,250.00 |
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SQUARE D MJA36500 NEW MLD CASE CIRCUIT BREAKER 500 AMP 3 POLE 600 VAC $3,250.00 |
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SQUARE D MJA36600 NEW MLD CASE CIRCUIT BREAKER 600 AMP 3 POLE 600 VAC $3,250.00 |
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NIB SQUARE D LAL362251021 MOLDED CASE CIRCUIT BREAKER $3,200.00 |
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MHL3650032DC1625 Square D Molded Case Circuit Breaker 500A 3P 600V Hi-Break $3,150.00 |
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MHL3650032DC2351 Square D Molded Case Circuit Breaker 500A 3P 600V DC Rated $2,950.00 |
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MHL3650032DC Square D Molded Case Circuit Breaker 500A 3P 600V DC Rated $2,650.00 |
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SQUARE D MGA36400 NEW MLD CASE CIRCUIT BREAKER 400 AMP 3 POLE 240- 600 VAC $2,677.77 |
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SQUARE D MGA36500 NEW MLD CASE CIRCUIT BREAKER 500 AMP 3 POLE 240- 600 VAC $2,677.77 |
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SQUARE D MGA36600 NEW MLD CASE CIRCUIT BREAKER 600 AMP 3 POLE 240- 600 VAC $2,677.77 |
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SIEMENS 3WN6421-0GB85-3KA1 Insulated Case Circuit Breaker (2 AVAILABLE) $2,500.00 |
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MHL3660033DC1627 Square D Molded Case Circuit Breaker 600A 600V 3P MHL $2,490.00 |
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MHL3660033DC1386 Square D Molded Case Circuit Breaker 600A 600V 3P MHL $2,469.00 |
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SQUARE D JJA36250 NEW MLD CASE CIRCUIT BREAKER 250 AMP 3 POLE 600 VAC $2,281.10 |
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Square D PXF361200 600V 1200A 3 Pole Molded Case Circuit Breaker PXF 1200 AMP $2,069.99 |
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ABB S6N800BW ISOMAX MOLDED CASE CIRCUIT BREAKER $1,999.40 |
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MITSUBISHI NF800-CEP MOLDED CASE CIRCUIT BREAKER NF800CEP $2,000.00 |
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FPE FEDERAL PACIFIC CIRCUIT BREAKER NP632000 2000A 600V 3P MOLDED CASE $1,999.99 |
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SQUARE D LAL36350 THERMAL-MAGNETIC MOLDED CASE CIRCUIT BREAKER 350A 350 AMPS – N $1,910.00 |
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MHL366001685 Square D Molded Case Circuit Breaker 3P 600A 600V w/ controls $1,839.00 |
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MHL366001287 SQUARE D Circuit Breaker 600A MHL 3P 600V Molded Case w accessories $1,839.90 |
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GE TLB434400 MOLDED CASE CIRCUIT BREAKER 480V 400A $1,827.00 |
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SQUARE D HJA36125 NEW MLD CASE CIRCUIT BREAKER 125 AMP 3 POLE 600 VAC $1,820.00 |
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SQUARE D HJA36150 NEW MLD CASE CIRCUIT BREAKER 150 AMP 3 POLE 600 VAC $1,820.00 |
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SQUARE D JJA36150 NEW MLD CASE CIRCUIT BREAKER 150 AMP 3 POLE 600 VAC $1,759.99 |
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SQUARE D JJA36175 NEW MLD CASE CIRCUIT BREAKER 175 AMP 3 POLE 600 VAC $1,759.99 |
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SQUARE D JJA36200 NEW MLD CASE CIRCUIT BREAKER 200 AMP 3 POLE 600 VAC $1,759.99 |
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SQUARE D JJA36225 NEW MLD CASE CIRCUIT BREAKER 225 AMP 3 POLE 600 VAC $1,759.99 |
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SQUARE D JGA36250 NEW MLD CASE CIRCUIT BREAKER 250 AMP 3 POLE 240- 600 VAC $1,600.00 |
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LA3400PRF Westinghouse Molded Case Circuit Breaker 3P 600V 400A tri-pac $1,550.00 |
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SQUARE D MA36500 SERIES 2 NEW 500A MOLDED CASE CIRCUIT BREAKER MA36500 $1,500.00 |
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NEW SQUARE D LAP26400MB MOLDED CASE MAIN CIRCUIT BREAKER 400 AMP 2 POLE 600 VOLT $1,499.99 |
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MA36600 SQUARE D Molded Case Circuit Breaker 600V 600A MA 3P I-Line $1,450.00 |
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SQUARE D JDA36250 NEW MLD CASE CIRCUIT BREAKER 250 AMP 3 POLE 240-600 VAC $1,275.75 |
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NEW Square D KH362508021 250A I-Line Molded Case Circuit Breaker $1,250.00 |
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SQUARE D HGA36125 NEW MLD CASE CIRCUIT BREAKER 125 AMP 3 POLE 240- 600 VAC $1,248.00 |
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SQUARE D HGA36150 NEW MLD CASE CIRCUIT BREAKER 150 AMP 3 POLE 240- 600 VAC $1,248.00 |
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SQUARE D JGA36150 NEW MLD CASE CIRCUIT BREAKER 150 AMP 3 POLE 240- 600 VAC $1,248.00 |
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SQUARE D JGA36175 NEW MLD CASE CIRCUIT BREAKER 175 AMP 3 POLE 240- 600 VAC $1,248.00 |
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SQUARE D JGA36200 NEW MLD CASE CIRCUIT BREAKER 200 AMP 3 POLE 240- 600 VAC $1,248.00 |
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SQUARE D JGA36225 NEW MLD CASE CIRCUIT BREAKER 225 AMP 3 POLE 240- 600 VAC $1,248.00 |
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USED Square D MH36600 600 amp I-Line Molded Case Circuit Breaker 600VAC $1,200.00 |
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USED Square D MH36350 350 amp I-Line Molded Case Circuit Breaker 600VAC $1,100.00 |
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NEW SEALED Allen Bradley 140U-LTL3-D40 /A Molded Case Circuit Breaker Trip Unit $1,088.01 |
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ALLEN-BRADLEY 140U-M6X3 MOLDED CASE CIRCUIT BREAKER/800 amps $950.00 |
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NEW FPE MODED CASE CIRCUIT BREAKER 3P 250A NJJ231250 $999.99 |
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NEW FPE MODED CASE CIRCUIT BREAKER 3P 400A NJJ231400 $999.99 |
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NEW FPE MODED CASE CIRCUIT BREAKER 3P 250A NJL4313250 $999.99 |
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GE SKDA36AN0800 3p 800amp 600v circuit breaker molded case switch warranty!! $995.00 |
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New Allen-Bradley 140U-MTL3-D80 A Molded Case Circuit Breaker Trip Unit 800A $989.00 |
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800 Amp Square D Molded Case Circuit Breaker MEC 836LI $975.00 |
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1200 amp Molded Case Circuit Breaker/Switch $900.00 |
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150 Amp Square D Molded Case Circuit Breaker KC34150 $925.00 |
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SQUARE D JDA36150 NEW MLD CASE CIRCUIT BREAKER 150 AMP 3 POLE 240-600 VAC $910.10 |
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SQUARE D JDA36175 NEW MLD CASE CIRCUIT BREAKER 175 AMP 3 POLE 240-600 VAC $910.10 |
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SQUARE D JDA36200 NEW MLD CASE CIRCUIT BREAKER 200 AMP 3 POLE 240-600 VAC $910.10 |
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SQUARE D JDA36225 NEW MLD CASE CIRCUIT BREAKER 225 AMP 3 POLE 240-600 VAC $910.10 |
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USED Square D MH36300 300 amp I-Line Molded Case Circuit Breaker 600VAC $900.00 |
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USED Square D MH36400 400 amp I-Line Molded Case Circuit Breaker 600VAC $875.00 |
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USED Square D MHL36450 Molded Case Circuit Breaker 450A $800.00 |
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USED Square D MAP36800 800 amp Molded Case Circuit Breaker 600VAC $800.00 |
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NEW FPE MODED CASE CIRCUIT BREAKER 3P 225A NFJ63225R $799.99 |
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Square D LA36400 400Amp 3 Pole 600V Molded Case Circuit Breaker $774.99 |
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USED Square D MAP36500 500 amp Molded Case Circuit Breaker $750.00 |
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Square D SqD LH36400 Molded Case 400a Circuit Breaker $750.00 |
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SQUARE D HJA36070 NEW MLD CASE CIRCUIT BREAKER 70 AMP 3 POLE 600 VAC $744.99 |
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SQUARE D HJA36080 NEW MLD CASE CIRCUIT BREAKER 80 AMP 3 POLE 600 VAC $744.99 |
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SQUARE D HJA36090 NEW MLD CASE CIRCUIT BREAKER 90 AMP 3 POLE 600 VAC $744.99 |
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SQUARE D HJA36100 NEW MLD CASE CIRCUIT BREAKER 100 AMP 3 POLE 600 VAC $744.99 |
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Square D KA36225 Molded Case Circuit Breaker 225 Amp $682.50 |
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Square D KA36200 Molded Case Circuit Breaker 200 Amp $682.50 |
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Square D – KAL26200WB8041 – Molded case Circuit Breaker 600V 200 A $675.00 |
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SQUARE D MOLDED CASE CIRCUIT BREAKER KHP36200 200 AMP $699.99 |
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LG MOLDED CASE CIRCUIT BREAKER ABS 603 600 A 660 VAC 3P $699.00 |
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Square D LA36250 3 Pole Series 3 600V 250A Molded Case Circuit Breaker $674.99 |
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FAL360201212 TYPE FAL MOLDED CASE CIRCUIT BREAKER 600V 20A 3-POLE – NEW $673.00 |
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SQUARE D HJA36015 NEW MLD CASE CIRCUIT BREAKER 15 AMP 3 POLE 600 VAC $659.99 |
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SQUARE D HJA36020 NEW MLD CASE CIRCUIT BREAKER 20 AMP 3 POLE 600 VAC $659.99 |
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SQUARE D HJA36030 NEW MLD CASE CIRCUIT BREAKER 30 AMP 3 POLE 600 VAC $659.99 |
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SQUARE D HJA36040 NEW MLD CASE CIRCUIT BREAKER 40 AMP 3 POLE 600 VAC $659.99 |
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SQUARE D HJA36050 NEW MLD CASE CIRCUIT BREAKER 50 AMP 3 POLE 600 VAC $659.99 |
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SQUARE D HJA36060 NEW MLD CASE CIRCUIT BREAKER 60 AMP 3 POLE 600 VAC $659.99 |
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KA36150 SQUARE D MOLDED CASE CIRCUIT BREAKER. 3POLE 600V AC 250V DC FOR 1 PHASE $650.00 |
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LG MOLDED CASE CIRCUIT BREAKER ABH 404 400A 4 POLE 660V $650.00 |
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LG MOLDED CASE CIRCUIT BREAKER ABH 403 400A $650.00 |
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NEW FPE MOLDED CASE CIRCUIT BREAKER NFJ632150R 3POLE 150AMP 600VOLT $649.99 |
Case Circuit Questions
Circuit Breaker
Circuit Breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow.
Generally, a circuit breaker panel consists of a switch and a moving, conductive contact plate, which moves with the switch. When the switch is ‘on’ position, the contact plate touches a stationary plate, which is connected to the circuit so that the electric current can flow. But when the switch is ‘off’ position, due to overloading or short circuit, the contact plate moves away from the stationary plate and the circuit gets opened and the electric current ceases to flow.
Circuit breaker types can be classified according to their characteristics like voltage class, construction type, interrupting type, and structural features.
Low Voltage Circuit Breakers: These breakers are made for direct current (DC) applications and are commonly used in domestic, commercial, and industrial fields. Low voltage circuit breakers are usually placed in draw-out enclosures that permit removal and interchange without dismantling the switchgear. Miniature circuit breakers (MCB) and molded case circuit breakers (MCCB) are some common types of low voltage circuit breakers.
Medium Voltage Circuit Breakers: These breakers can be assembled into metal enclosed switchgear line ups for indoor applications, or as individual components for outdoor applications like substations. Vacuum circuit breakers, air circuit breakers and SF6 circuit breakers are some examples of medium voltage circuit breakers.
High Voltage Circuit Breakers: These breakers help in protecting and controlling electrical power transmission networks. They are solenoid operated and are employed with current sensing protective relays that function through current transformers.
Magnetic Circuit Breakers: These circuit breaker contacts are held closed by a latch so that when the current in the coil goes beyond the rating of the circuit breaker, the coils pull releases the latch which allows the contacts to open with a spring action.
Thermal Circuit Breakers: These breakers employ heat to break the circuit current flow and consist of a bimetallic strip, made of two types of materials welded together.
One of the most important differences between circuit breakers and fuses is that circuit breakers can be reset either manually or automatically to resume normal operation, whereas fuses once used, have to be replaced.
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