Molded Case Circuit Breakers

Filter

Molded case circuit breakers protect various electrical circuits and equipment from overcurrents and short circuits. These breakers consist of a molded case housing that encloses the circuit...Read more

SQUARE D -

HJA Series Circuit Breakers

Square D HJA Series circuit breakers are best suited for use in panelboards, industrial enclosures, busway plug-in units, switchboards and motor control centres for providing protection against short-circuit conditions and current overloads. These UL-listed breakers feature I-Line style plug-in design for ensuring ease-of-installation, a non-interchangeable thermal-magnetic trip for providing both time-delayed and instantaneous current limiting functions. Choose from a broad range of these current limiting breakers available in amperage ratings ranging from 15 to 150A on Raptor Supplies.

StyleModelAmpsNumber of PolesVoltagePrice
AHJA260151152600-
RFQ
AHJA260154152600-
RFQ
AHJA260152152600-
RFQ
AHJA260155152600-
RFQ
BHJA3601515A3600V€1,632.36
AHJA260201202600€1,430.01
AHJA260202202600-
RFQ
AHJA260204202600€1,430.01
BHJA3602020A3600V€1,632.36
AHJA260251252600-
RFQ
AHJA260252252600-
RFQ
AHJA260254252600-
RFQ
CHJA3602525A3600V€1,681.86
AHJA260301302600-
RFQ
AHJA260302302600€1,430.01
AHJA260304302600-
RFQ
DHJA3603030A3600V€1,632.36
EHJA26035235A2600V-
RFQ
EHJA26035135A2600V-
RFQ
CHJA3603535A3600V€1,681.86
EHJA26035435A2600V-
RFQ
AHJA260404402600€1,560.58
AHJA260402402600€1,560.58
AHJA260401402600€1,560.58
BHJA3604040A3600V€1,632.36
SQUARE D -

PowerPact Molded Case Circuit Breakers, HLA Series

Square D HLA Series PowerPact molded case circuit breakers protect electrical circuits from overcurrents and short-circuits. The current limiting design of these breakers makes them ideal for reverse feed applications. These H frame breakers feature a non-interchangeable, thermal-magnetic trip to provide both long-time & instantaneous trip functions during mild nuisance tripping & severe overloading. They are equipped with I-Line style plug-in for facilitating smooth installation in panelboards. These molded case circuit breakers are available in 2 & 3 pole configurations on Raptor Supplies.

StyleModelAmpsNumber of PolesVoltagePrice
AHLA260152152600-
RFQ
AHLA260151152600-
RFQ
AHLA260154152600-
RFQ
BHLA3601515A3600V€2,251.64
AHLA260204202600-
RFQ
AHLA260202202600-
RFQ
AHLA260201202600-
RFQ
BHLA3602020A3600V€2,251.64
AHLA260254252600-
RFQ
AHLA260251252600-
RFQ
AHLA260252252600-
RFQ
BHLA3602525A3600V€2,302.18
AHLA260301302600-
RFQ
AHLA260302302600€1,554.17
RFQ
AHLA260304302600€1,835.61
BHLA3603030A3600V€2,251.64
BHLA3603535A3600V€2,302.18
BHLA26035235A2600V€1,374.54
BHLA26035135A2600V€1,374.54
BHLA26035435A2600V€1,374.54
AHLA260402402600€1,554.17
RFQ
AHLA260404402600-
RFQ
AHLA260401402600-
RFQ
BHLA3604040A3600V€2,251.64
AHLA260454452600-
RFQ
SQUARE D -

PGA Series Molded Case Circuit Breakers

Square D PGA Series circuit breakers are designed for use with panelboards and loadcentres for protecting electrical circuits from short-circuit and current overload conditions. These breakers feature I-Line style plug-in mounting facility for ease-of-installation and are suitable for reverse-feed applications. They come equipped with line- and load-side lug terminals to accommodate wires (copper / aluminium) of sizes ranging between 500 kcmil and 3 AWG. These breakers, with 3-pole configuration, are capable of delivering a maximum interrupting capacity of 35kA at 480V and adheres to UL, CSA and IEC standards. Choose from a wide range of these circuit breakers available in current ratings ranging from 600 to 1200A on Raptor Supplies.

StyleModelAmpsVoltagePrice
APGA36040U43A400600-
RFQ
BPGA36060U43A600A600V-
RFQ
CPGA36080CU31A800600-
RFQ
CPGA36080CU33A800600-
RFQ
BPGA36080800A600V€14,166.81
DPGA361001000A600V€18,475.94
DPGA361201200A600V€18,475.94
DPGA36120U41A1200A600V€18,475.94
DPGA36120U44A1200A600V€21,648.06
SQUARE D -

PowerPact H Molded Case Circuit Breakers, HLL Series

Square D HLL Series PowerPact H moulded case circuit breakers are electrical devices designed for industrial and commercial applications. They offer reliable protection against overloads and short circuits, safeguarding electrical systems from damage and are available in 2 / 3 pole configuration with amperage ratings ranging from 15A to 150A. These MCCBs can handle voltages up to 600VAC and 250VDC. The interrupting ratings (AIR) include D-18kA, G-35kA, J-65 kA and L-100kA at 480VAC, as well as 20kA at 250VDC. These circuit breakers offer easy design standardisation with common mounting holes, handle locations and trim dimensions. They have field-interchangeable trip units and common accessories for making specification changes. These MCCBs offer a snap-in terminal design for easy conversion between busbar and lug options and are available in the unit mount, I-line, or Drawout constructions. They come with the advanced trip unit technology, adjustable settings and diverse interrupting capacities to detect and interrupt faults and protect the circuit.

StyleModelAmpsNumber of PolesVoltagePrice
AHLL3601515A3600V-
RFQ
BHLL2601515A2600V-
RFQ
CHLL3602020A3600V€1,768.56
BHLL2602020A2600V€957.92
DHLL26025252600-
RFQ
CHLL3602525A3600V€1,944.06
EHLL36030M71303600€1,635.02
RFQ
EHLL36030M71AA303600-
RFQ
BHLL2603030A2600V-
RFQ
CHLL3603030A3600V-
RFQ
BHLL2603535A2600V-
RFQ
CHLL3603535A3600V-
RFQ
CHLL3604040A3600V€1,768.56
BHLL2604040A2600V-
RFQ
CHLL3604545A3600V-
RFQ
BHLL2604545A2600V-
RFQ
FHLL36050M72503600€1,618.71
CHLL3605050A3600V€1,768.56
BHLL2605050A2600V-
RFQ
FHLL36060U31X603600-
RFQ
AHLL3606060A3600V€1,768.56
BHLL2606060A2600V-
RFQ
CHLL3607070A3600V€1,947.51
BHLL2607070A2600V-
RFQ
BHLL2608080A2600V-
RFQ
SQUARE D -

JDA Series Molded Case Circuit Breakers

Square D JDA Series circuit breakers are designed for installation within panelboards & loadcentres for protecting electrical circuits & equipment against short-circuits & current overloads. These UL-listed circuit breakers feature I-Line style plug-in design for ease-of-installation, load side lug terminals for hassle-free wiring and thermal magnetic trip for protection against severe short-circuits while avoiding tripping on mild overloads. They provide current ratings up to 250A and deliver interrupt capacity of 18kA at 480VAC. Square D JDA series circuit breakers are available in 3 pole configuration on Raptor Supplies.

StyleModelAmpsVoltagePrice
AJDA36150150A600V€2,992.19
BJDA36175SA175600-
RFQ
CJDA36175175A600V€2,992.19
BJDA36200SA200600€4,243.19
AJDA36200200A600V€2,992.19
AJDA36225225A600V€2,992.19
BJDA36250U33X250600€3,882.88
BJDA36250U44X250600-
RFQ
BJDA36250U31X250600€3,695.84
BJDA36250CU33X250600-
RFQ
AJDA36250250A600V€3,538.78
SQUARE D -

JJA Series Molded Case Circuit Breakers

Square D JJA Series circuit breakers are designed for installation in electrical devices for protection against overcurrent and short-circuit conditions. These circuit breakers feature load side lug terminals for hassle-free wiring, I-Line style plug-in design for ease-of-installation and thermal magnetic trip for protection from severe short-circuits while avoiding tripping on mild overloads. These circuit breakers provide current ratings up to 250A and interrupt capacity of 65kA at 480VAC. JJA Series circuit breakers are available in 3 pole configuration on Raptor Supplies.

StyleModelAmpsVoltagePrice
AJJA36150150A600V€3,499.93
BJJA36175175A600V€3,691.49
CJJA36200SN200600-
RFQ
CJJA36200YP200600-
RFQ
CJJA36200SA200600-
RFQ
AJJA36200200A600V€3,499.93
CJJA36225SA225600€4,848.66
AJJA36225225A600V€3,691.49
CJJA36250U43X250600€6,854.68
CJJA36250U31X250600€6,526.56
CJJA36250U44X250600€8,691.59
CJJA36250U33X250600€6,526.56
AJJA36250250A600V€4,021.41
SQUARE D -

JLA Series Circuit Breakers

Square D JLA Series circuit breakers are designed for limiting let-through current for protecting downstream components in power distribution applications. These UL listed circuit breakers feature I-Line style plug-in design for ensuring ease-of-installation and load side lug terminals for hassle-free wiring. They are equipped with a non-interchangeable thermal magnetic trip for long time & instantaneous trip functions for reacting against severe short-circuits at once while avoiding tripping on mild overloads. These 3 pole circuit breakers are available in current ratings ranging from 150 to 250A on Raptor Supplies.

StyleModelAmpsVoltagePrice
AJLA36150150A600V-
RFQ
BJLA36175175600-
RFQ
BJLA36175LC175600-
RFQ
BJLA36200SA200600-
RFQ
AJLA36200200A600V€4,768.19
CJLA36225225A600V€4,768.19
BJLA36250U31X250600€7,290.21
BJLA36250U54XEK250600-
RFQ
AJLA36250250A600V-
RFQ
SQUARE D -

KA Series Thermal Magnetic Circuit Breakers

Square D KA Series circuit breakers are suitable for industrial panelboards, enclosures, busway plug-in units, switchboards, motor control centres & combination starters for protecting equipment against current overloads & short-circuits. These 2 / 3 pole circuit breakers feature a thermal magnetic trip for both long time & instantaneous trip functions for reacting against severe short-circuits at once while avoiding tripping on mild overloads, I-Line style plug-in ensures hassle-free installation & rearrangement within panelboards and load side lug terminals allow ease-of-wiring. These 600VAC molded case circuit breakers are available in current ratings ranging from 100 to 250A on Raptor Supplies.

StyleModelAmpsNumber of PolesVoltagePrice
AKA3607070A3600V-
RFQ
AKA3608080A3600V€4,021.41
AKA3609090A3600V€4,021.41
RFQ
BKA26100BC100A2600V€2,092.36
RFQ
CKA36100100A3600V-
RFQ
DKA26100AC100A2600V-
RFQ
CKA36110110A3600V€4,021.41
RFQ
EKA36125-10211253600-
RFQ
DKA26125AB125A2600V€2,609.99
RFQ
FKA36125125A3600V€4,021.41
DKA26125BC125A2600V€2,092.36
RFQ
DKA26125AC125A2600V-
RFQ
EKA36150-10211503600-
RFQ
DKA26150AC150A2600V-
RFQ
DKA26150AB150A2600V€2,092.36
RFQ
CKA36150150A3600V€4,021.41
AKA36175175A3600V€4,021.41
EKA36200-10212003600-
RFQ
DKA26200AC200A2600V-
RFQ
DKA26200BC200A2600V-
RFQ
EKA36225-10212253600-
RFQ
AKA36225225A3600V€4,021.41
DKA26225AC225A2600V€2,609.99
DKA26225BC225A2600V€2,092.36
RFQ
DKA26225AB225A2600V€2,092.36
RFQ
SQUARE D -

Molded Case Circuit Breakers: LI Series, Thermal Magnetic

Square D LI Series circuit breakers are compatible for use with panelboards and loadcentres to protect sensitive electrical circuits against short-circuit conditions and current overloads. These UL-listed devices feature I-Line style plug-in design for ease-of-installation, load-side lug terminals to reduce the wiring downtime and a thermal-magnetic trip unit to provide both long-time and instantaneous current limiting functions. Choose from a wide range of these triple-pole circuit breakers available in amperage ratings ranging from 400 to 600A on Raptor Supplies.

StyleModelAmpsPrice
ALI36400400A-
RFQ
BLI36450450A-
RFQ
BLI36500500A€9,768.96
ALI36600600A-
RFQ
SQUARE D -

Micrologic Molded Case Circuit Breakers: LX Series, 3 Pole

Square D LX Series circuit breakers are specially designed to provide circuit protection against damages caused by overload and short-circuit conditions. These devices feature a unique MicroLogic non-interchangeable trip for delivering both long-time and instantaneous current limiting functions and I-Line style plug-in mounting design to ensure ease-of-installation in compact spaces. Choose from an extensive array of these circuit breakers available in amperage ratings of 125A, 250A, 400A and 600A on Raptor Supplies.

StyleModelAmpsVoltagePrice
ALX36125G125A600V€6,168.54
RFQ
BLX36150G150600-
RFQ
CLX36250250A600V-
RFQ
CLX36250G250A600V-
RFQ
BLX36300G300600-
RFQ
DLX36400400A600V-
RFQ
ALX36400G400A600V-
RFQ
DLX36600600A600V-
RFQ
ALX36600G600A600V-
RFQ
SQUARE D -

Molded Case Circuit Breakers, MAL Series

Square D MAL Series circuit breakers are ideal for applications where the rated load currents exceed the capabilities of a miniature circuit breaker. These 3 pole breakers feature a thermal-magnetic trip for providing instantaneous & long-time current limiting protection with two different switching mechanisms - a bimetal switch for handling overcurrents and an electromagnet for handling short circuits. They are equipped with feed-thru connection terminals for easily connecting multiple sections of the circuit and line & load side lug terminals for accommodating aluminium / copper wires. These breakers are available in current ratings ranging from 300A to 1200A on Raptor Supplies.

StyleModelAmpsVoltagePrice
AMAL36300300A600V€5,436.96
AMAL36350350A600V€5,436.96
BMAL36400400A600V-
RFQ
CMAL36450450A600V-
RFQ
DMAL36500-1212500600-
RFQ
BMAL36500500A600V€8,862.51
EMAL3660033M600600-
RFQ
EMAL3660040M600600-
RFQ
EMAL36000MV600600€5,535.13
RFQ
EMAL36600-1021600600-
RFQ
BMAL36600600A600V€8,862.51
EMAL36700700600€8,862.51
RFQ
BMAL36800800A600V€8,862.51
AMAL3612001200A600V€10,568.91
SQUARE D -

MGA Series Molded Case Circuit Breakers

Square D MGA Series circuit breakers are designed for installation in commercial and industrial electrical devices for protection against overcurrent and short-circuit conditions. These units feature a programmable electronic trip for delivering short-time, long-time and instantaneous current limiting functions and line- and load-side lug terminals to accommodate wires (copper / aluminium) of sizes ranging between 500 kcmil & 3 AWG. They can handle current ratings up to 800A and deliver interrupt capacities of 65kA at 240VAC, 35kA at 480VAC and 18kA at 600VAC.

StyleModelAmpsPrice
AMGA36300300A-
RFQ
AMGA36350350A-
RFQ
AMGA36400400A€9,541.26
AMGA36450450A€9,541.26
AMGA36500500A€9,541.26
AMGA36600600A€9,541.26
AMGA36800800A€9,541.26
SQUARE D -

MH Series Molded Case Circuit Breakers

Square D MH Series circuit breakers are designed for installation in panelboards and loadcentres for protecting electrical circuits against short-circuit conditions and current overloads. These UL-listed & CSA-certified breakers feature I-Line style plug-in design for ease-of-installation and a fixed thermal, adjustable AC magnetic trip unit for delivering both time-delayed and instantaneous current limiting functions, respectively.

StyleModelAmpsPrice
AMH36300300A€10,476.59
RFQ
BMH36400400A€10,476.59
BMH36450450A-
RFQ
AMH36500500A€10,476.59
AMH36600600A€10,476.59
AMH36700700A€11,065.56
CMH36800800A€11,065.56
SQUARE D -

MHL Series Molded Case Circuit Breakers

Square D MHL Series circuit breakers are designed for switching AC systems while delivering protection against current overloads & short circuits in manufacturing & storage facilities. These feed-thru circuit breakers feature a thermal-magnetic trip unit for reacting against severe power surges at once while avoiding tripping on mild overloads and deliver a maximum interrupt capacity of 65kA at 480VAC. Choose from a wide range of these triple-pole circuit breakers available in amperage ratings ranging from 300 to 1200A on Raptor Supplies.

StyleModelAmpsNumber of PolesVoltagePrice
AMHL36300300A3600V-
RFQ
BMHL36350-12123503600-
RFQ
AMHL36350350A3600V€9,541.26
AMHL36400400A3600V€9,541.26
AMHL36450450A3600V€9,541.26
CMHL36500500A3600V€9,541.26
CMHL36600600A3600V€9,696.89
BMHL36700-10217003600-
RFQ
CMHL36700700A3600V€10,476.59
BMHL268008002600€9,541.26
RFQ
BMHL36800-12128003600-
RFQ
CMHL36800800A3600V€10,476.59
BMHL369009003600€14,659.63
RFQ
CMHL3610001000A3600V€13,502.91
CMHL3612001200A3600V-
RFQ
SQUARE D -

NC Series Molded Case Circuit Breakers

Square D NC Series circuit breakers are ideal for use with panelboards and loadcentres for protecting electrical circuits from short-circuit and current overload conditions. They come integrated with I-Line style plug-in mounting facility for ease-of-installation and are also suitable for reverse-feed applications. The molded cases of these devices hold the current-carrying components, trip devices and other mechanisms within a compact space. These breakers, with 3-pole construction, are capable of delivering a maximum interrupting capacity of 100kA at 480V and adheres to UL, CSA and IEC standards. Choose from a wide range of these NC Series circuit breakers, available in current ratings ranging from 1000 to 1200A on Raptor Supplies.

StyleModelAmpsPrice
ANC3610001000A€18,910.26
RFQ
ANC3612001200A€18,910.26
RFQ
SQUARE D -

MGL Series Molded Case Circuit Breakers

Square D MGL Series circuit breakers protect industrial machinery and equipment from damages caused by short-circuit and overload occurrences. They feature a programmable electronic trip for long-time, short-time & instantaneous tripping and a solid-state protection system for electronically controlling the current flow. They are equipped with line and load side lug terminals to ensure ease-of-wiring and maximum conductivity. MGL Series circuit breakers are available in M frame size on Raptor Supplies.

StyleModelAmpsPrice
AMGL36300300€9,541.26
AMGL36350350-
RFQ
AMGL36400400€9,541.26
AMGL36450450€9,541.26
AMGL36500500€9,541.26
AMGL36600600€9,541.26
AMGL36700700€11,065.56
AMGL36800800€11,065.56
SQUARE D -

MJL Series Molded Case Circuit Breakers

Square D MJL Series circuit breakers are designed to protect sensitive circuits from excessive current flows causing overloads or short circuits. These circuit breakers feature a programmable electronic trip for short-time, long-time & instantaneous tripping and a solid-state protection system for electronically controlling the current flow & providing advanced safety for appliances. These breakers are equipped with line and load side lug terminals to accommodate wires (copper / aluminium) of sizes ranging between 500 kcmil & 3 AWG. These circuit breakers provide current ratings up to 800A and deliver interrupt capacity of 100kA at 240VAC, 65kA at 480VAC and 25kA at 600VAC.

StyleModelAmpsPrice
AMJL36300300€9,842.76
AMJL36350350€9,842.76
AMJL36400400-
RFQ
AMJL36450450€9,842.76
AMJL36500500€9,842.76
AMJL36600600€9,842.76
AMJL36700700-
RFQ
AMJL36800800€11,065.56
BMJL36800AA800€11,829.88
RFQ
EATON -

CH Series Circuit Breakers

StyleModelAmpsNumber of PolesVoltagePrice
ACH215SW152240V-
RFQ
BCH115CAFPN151120V€117.36
RFQ
CCH115ST151120V-
RFQ
DCH110151120V-
RFQ
ECH115EPD151120V-
RFQ
FCH120GFAF201120V-
RFQ
FCH120GF201120V-
RFQ
BCH120CAFPN201120V€117.36
RFQ
GCH120CAF201120V€128.54
RFQ
GCH120CAFA201120V€128.54
RFQ
HCH120AFGF201120V-
RFQ
ACH220SW202240V-
RFQ
ICH220ST202240V-
RFQ
CCH120ST201120V-
RFQ
JCH220AFIT202240V€409.48
RFQ
ECH120EPD201120V-
RFQ
KCH225252240V-
RFQ
LCH125251120V-
RFQ
ACH230SW302240V€134.16
RFQ
ICH230ST302240V-
RFQ
LCH130301120V-
RFQ
FCH130GF301120V-
RFQ
MCH230GF302240V-
RFQ
CCH130ST301120V-
RFQ
ECH130EPD301120V-
RFQ
SQUARE D -

Molded Case Circuit Breakers, ME Series

Square D ME Series molded case circuit breakers provide short-circuit and overload protection to switchboards, panelboards, motor control centers and busways. These 3 pole, 3 phase breakers feature a thermal magnetic trip mechanism that ensures both long-time and instantaneous current limiting protection. They are equipped with lug terminals for accommodating aluminium or copper wires and allow I-Line style plug in mounting to ensure smooth installation in loadcentres. These CSA-certified and UL-listed breakers are available in 250 to 800A current ratings on Raptor Supplies.

StyleModelAmpsPrice
AME36250LS250A-
RFQ
AME36800LI800A-
RFQ
AME36800LS800A-
RFQ
AME36800LSG800A-
RFQ
SQUARE D -

Thermal Magnetic Circuit Breakers, I-Line Mount

Square D PowerPact L Series circuit breakers are designed for installation in emergency power systems and data centres by providing protection from overload or short-circuit conditions. These units feature a non-interchangeable, thermal-magnetic trip for delivering both long-time and instantaneous current limiting functions. The molded case of these breakers accommodate current-carrying components, trip devices and other mechanisms within a very small space. They are further integrated with I-Line style plug-in mounting facility for easy installation and maintenance; suitable for reverse feed applications. Choose from an extensive range of these LA / LH frame circuit breakers available in 2 and 3 pole construction options on Raptor Supplies.

StyleModelAmpsCircuit Breaker TypeNumber of PolesPhaseVoltagePrice
ALAL36125125A-3-600V-
RFQ
ALAL36150150Standard33-€4,553.24
BLAL36175175A-3-600V-
RFQ
CLAP36200MB200-3-600-
RFQ
DLAL36200MB200-3-600-
RFQ
ELAL36200200Standard33-€4,553.24
FLAL36225225Standard33-€4,553.24
CLAP36225MB225-3-600-
RFQ
GLAL34225MC225A-3-480V€2,474.18
DLAL36250MB250-3-600-
RFQ
DLAL36250-2100250-3-600-
RFQ
HLAL26250250Standard21--
RFQ
DLAL36250-1021250-3-600-
RFQ
ILAL26250MB250-2-600-
RFQ
CLAP36250MB250-3-600-
RFQ
DLAL36300MB300-3-600-
RFQ
CLAP36300MB300-3-600€4,553.24
DLAL36300-8041300-3-600-
RFQ
HLAL26300300Standard21--
RFQ
CLAL36300-1021300-3-600-
RFQ
DLAL36350MB350-3-600-
RFQ
DLAL36350-1212350-3-600-
RFQ
DLAL36350-1021350-3-600-
RFQ
HLAL26350350Standard21--
RFQ
CLAP36400400-3-600€4,553.24
SQUARE D -

KC Series Thermal Circuit Breakers

Square D KC Series circuit breakers are designed for limiting let-through current for protecting downstream components & connected circuits and are ideal for installation within switchboards, motor control centres, panelboards, industrial enclosures and busway plug-in units. They feature I-Line style plug-in design for ensuring hassle-free installation and thermal magnetic trip for providing both long time & instantaneous trip functions for reacting against severe short-circuits at once while avoiding tripping on mild overloads. These KC frame molded case circuit breakers are available in amperage ratings ranging from 110 to 250A on Raptor Supplies.

StyleModelAmpsVoltagePrice
AKC34110110A480V-
RFQ
AKC34125125A480V€5,693.24
RFQ
AKC34150150A480V-
RFQ
BKC34175-1212175480€5,938.33
RFQ
AKC34175175A480V-
RFQ
BKC34200-1021200480-
RFQ
CKC34200200A480V-
RFQ
DKC34250250A480V€9,849.17
1234...45

Molded Case Circuit Breakers

Molded case circuit breakers are designed to prevent the flow of faulty power supplies into sensitive electrical equipment that may cause overloads and short circuits. With current ratings up to 1600A, these units are ideal for isolation applications in large PV systems. Raptor Supplies offers a wide range of these MCCBs from brands like ABB, Square D, Eaton, General Electric and Siemens. Square D circuit breakers come equipped with a thermal-magnetic trip unit which instantly opens under faulty currents and are capable of providing both time-delayed and instantaneous current limiting functions. These units feature an I-line type configuration at the ON end for facilitating bus connections in panelboards and lugs at the OFF end for cable connection. General Electric molded case circuit breakers feature a programmable electronic trip unit which accentuates the toggle when the current exceeds the predetermined value. These breakers come equipped with bolt-on type terminals for easy installation in reverse-feed applications. They are available in 2 and 3 pole options with a maximum voltage rating of 600VAC on Raptor Supplies.

Frequently Asked Questions

How does a molded case circuit breaker differ from a circuit breaker?

While both molded case circuit breakers and conventional circuit breakers serve the same primary purpose of protecting electrical circuits, MCCBs are a specific type of circuit breaker with a molded case for added durability and protection.

Can MCCBs be reset after tripping?

Once the fault or overload is resolved, you can reset the MCCB to restore power to the circuit.

What is the difference between an MCCB and a miniature circuit breaker (MCB)?

Molded case circuit breakers are designed for higher current ratings and are used in industrial settings with heavy machinery, while MCBs are smaller and designed for residential or light commercial applications with lower current ratings.

Can MCCBs be used in three-phase electrical systems?

Yes, MCCBs are commonly used in three-phase systems. Brands like WEG, Siemens and ABB come in various configurations to suit single-phase or three-phase applications.

How do I select the right MCCB for my specific application?

Selecting the right MCCB involves considering factors such as the system's voltage, current rating, environmental conditions and specific protection requirements.