Molded Case Circuit Breakers - Page 5 | Raptor Supplies Singapore

Molded Case Circuit Breakers

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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

GENERAL ELECTRIC -

Circuit Breakers

StyleModelAmpsNumber Of PolesVoltagePrice (inc. GST)
ATFK236T100100A3600V SGD 1352.76
RFQ
ATFK236T125125A3600V SGD 1352.76
RFQ
ATFK236T150150A3600V SGD 1352.76
RFQ
ATFK236T175175A3600V SGD 1352.76
RFQ
ATFK226T200200A2480V SGD 1352.76
RFQ
ATFK236T200200A3600V SGD 1624.17
RFQ
ATFK236T225225A3600V-
RFQ
SIEMENS -

Bolt On Circuit Breaker: LGB Series

StyleModelAmpsNumber Of PolesVoltagePrice (inc. GST)
ALGB1B015B15A1277V SGD 383.50
BLGB2B015B15A2480V SGD 697.59
CLGB1B020B20A1277V SGD 383.50
DLGB2B020B20A2480V SGD 697.59
ELGB3B020B20A3480V SGD 932.97
FLGB3B025B25A3480V SGD 1133.85
GLGB2B030B30A2480V SGD 697.59
HLGB3B030B30A3480V SGD 932.97
ILGB3B035B35A3480V SGD 1133.85
JLGB2B040B40A2480V SGD 697.59
KLGB3B040B40A3480V SGD 932.97
LLGB3B050B50A3480V SGD 932.97
MLGB2B050B50A2480V SGD 697.59
NLGB3B060B60A3480V SGD 932.97
OLGB2B060B60A2480V SGD 697.59
PLGB2B070B70A2480V-
RFQ
QLGB2B080B80A2480V SGD 803.18
RLGB3B090B90A3480V SGD 1010.58
SLGB2B090B90A2480V SGD 803.18
BLGB2B100B100A2480V SGD 803.18
TLGB3B125B100A3480V-
RFQ
ULGB2B125B125A2480V-
RFQ
SIEMENS -

Molded Case Circuit Breakers, NGB Series

Siemens NGB Series circuit breakers are designed for installation in commercial and industrial electrical devices for protection against overcurrent and short circuit conditions. They feature a non-interchangeable thermal magnetic trip unit which provides both instantaneous & long-time protection and bolt-on mounting with load side lugs for hassle-free installation. They are suitable for reverse feed applications, are rated at 600V and have NGB type frame for added versatility. A wide range of these circuit breakers is available in 1, 2 & 3 pole configurations on Raptor Supplies.

StyleModelAic RatingAmpsNumber Of PolesPrice (inc. GST)
ANGB1B035B25kAIC@277v35A1-
RFQ
BNGB1B045B25kAIC@277v45A1 SGD 294.28
CNGB1B050B25kAIC@277v50A1 SGD 286.54
DNGB1B100B25kAIC@277v100A1 SGD 286.54
ENGB1B040B25kAIC@277v40A1 SGD 286.54
FNGB3B035B25kAIC@480V35A3 SGD 941.26
GNGB3B040B25kAIC@480V40A3 SGD 890.07
FNGB3B125B25kAIC@480V125A3 SGD 1390.68
GNGB3B100B25kAIC@480V100A3 SGD 950.88
HNGB3B090B25kAIC@480V90A3 SGD 950.88
INGB3B080B25kAIC@480V80A3 SGD 950.88
FNGB3B050B25kAIC@480V50A3 SGD 890.07
JNGB3B020B25kAIC@480V20A3 SGD 890.07
FNGB3B030B25kAIC@480V30A3 SGD 890.07
FNGB3B025B25kAIC@480V25A3 SGD 941.26
FNGB3B015B25kAIC@480V15A3 SGD 890.07
KNGB2B125B25kAIC@480V125A2 SGD 1324.67
LNGB2B025B25kAIC@480V25A2 SGD 617.44
MNGB2B020B25kAIC@480V20A2 SGD 556.85
MNGB2B015B25kAIC@480V15A2 SGD 556.85
FNGB3B045B25kAIC@480V45A3 SGD 941.26
SQUARE D -

Molded Case Circuit Breakers: JGL Series

Square D PowerPact J Series circuit breakers are used for protecting the circuit from excessive current to prevent fire hazard and equipment damage. These devices allow unit mounting with load- and line-side lugs for easy field installation and maintenance services. They are capable of accommodating aluminium or copper cables with sizes ranging from 350 kcmil to 3/0 AWG and can remain insensitive to mild overloads but provide instantaneous current limiting protection when the wire terminals are exposed to faulty current. These MCCBs feature a handle indicator which provides a visual indication of the three positions (ON, OFF and tripped) of the breaker and can be reset by manually pushing the control lever in the desired position. Choose from a wide range of these IEC protectors available in 3-pole design with a standard voltage rating of 600VAC on Raptor Supplies.

StyleModelAmpsMax. Wire SizeMin. Wire SizePrice (inc. GST)
AJGL36000S25AA----
RFQ
BJGL361501504/0 AWG4 AWG SGD 3880.98
CJGL361751754/0 AWG4 AWG SGD 3880.98
AJGL36175AA175-- SGD 4330.61
AJGL36175SO175-- SGD 4330.61
AJGL36200SA200---
RFQ
DJGL36200200350 kcmil3/0 AWG SGD 3880.98
EJGL36225225350 kcmil3/0 AWG SGD 3880.98
AJGL36250CU33X250---
RFQ
EJGL36250250350 kcmil3/0 AWG SGD 4517.34
SQUARE D -

Molded Case Circuit Breakers: LH Series, ABC Phase Circuit

Square D LH Series circuit breakers are best suited for use in panelboards, industrial enclosures, busway plug-in units, switchboards and motor control centres for protection against short-circuit conditions and current overloads. These CSA-certified devices feature a thermal magnetic trip for providing instant reaction against severe power surges while avoiding tripping on mild overloads. They are integrated with I-Line style plug-in design for ensuring ease-of-installation and load-side lugs for hassle-free wiring. Choose from a broad range of these current limiting breakers available in amperage ratings ranging from 125 to 300A on Raptor Supplies.

StyleModelAmpsPrice (inc. GST)
ALH36125125A SGD 9492.49
BLH36150150A-
RFQ
ALH36175175A SGD 10030.16
ALH36200200A-
RFQ
ALH36225225A SGD 10030.16
ALH36250250A SGD 10030.16
ALH36300300A SGD 10030.16
CLH36350350A SGD 10030.16
DLH36400400A SGD 10642.43
SQUARE D -

HJL Series Circuit Breakers

Square D HJL Series circuit breakers are suitable for installation within switchboards, motor control centres, panelboards, industrial enclosures and busway plug-in units for protecting connected circuits & equipment against short circuits & faulty currents. These feed-thru circuit breakers feature non-interchangeable 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. They come with load & line side lug terminals for hassle-free wiring & installation. These 2 / 3 pole molded case circuit breakers are available in amperage ratings ranging from 15 to 150A on Raptor Supplies.

StyleModelAmpsNumber Of PolesVoltagePrice (inc. GST)
AHJL2601515A2600V-
RFQ
BHJL3601515A3600V SGD 1792.88
CHJL3602020A3600V SGD 1792.88
AHJL2602020A2600V-
RFQ
AHJL2602525A2600V SGD 1674.44
DHJL3602525A3600V SGD 1925.88
EHJL36030M71303600 SGD 1792.88
EHJL36030SA303600-
RFQ
BHJL3603030A3600V SGD 1792.88
AHJL2603030A2600V SGD 1746.23
AHJL2603535A2600V SGD 1674.44
FHJL3603535A3600V SGD 1925.88
AHJL2604040A2600V-
RFQ
AHJL2604545A2600V SGD 1674.44
FHJL3604545A3600V SGD 1925.88
EHJL36050M72503600 SGD 1892.05
AHJL2605050A2600V-
RFQ
GHJL3605050A3600V SGD 1792.88
EHJL36060U33X603600-
RFQ
EHJL36060U31X603600-
RFQ
EHJL36060U44X603600-
RFQ
BHJL3606060A3600V SGD 1792.88
AHJL2606060A2600V SGD 1746.23
HHJL3607070A3600V SGD 2246.94
AHJL2607070A2600V-
RFQ
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 (inc. GST)
AHLA260151152600-
RFQ
AHLA260154152600-
RFQ
AHLA260152152600-
RFQ
BHLA3601515A3600V SGD 3126.53
AHLA260201202600-
RFQ
AHLA260202202600-
RFQ
AHLA260204202600-
RFQ
BHLA3602020A3600V SGD 3126.53
AHLA260254252600-
RFQ
AHLA260251252600-
RFQ
AHLA260252252600-
RFQ
BHLA3602525A3600V-
RFQ
AHLA260301302600-
RFQ
AHLA260302302600 SGD 2291.00
RFQ
AHLA260304302600 SGD 2907.96
BHLA3603030A3600V SGD 3126.53
BHLA26035235A2600V SGD 2026.21
BHLA26035135A2600V SGD 2026.21
BHLA3603535A3600V-
RFQ
BHLA26035435A2600V SGD 2026.21
AHLA260404402600-
RFQ
AHLA260402402600 SGD 2291.00
RFQ
AHLA260401402600-
RFQ
BHLA3604040A3600V SGD 3126.53
AHLA260451452600-
RFQ
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 (inc. GST)
AHLL3601515A3600V SGD 2407.47
BHLL2601515A2600V-
RFQ
CHLL3602020A3600V SGD 2407.47
BHLL2602020A2600V SGD 1455.90
DHLL26025252600-
RFQ
CHLL3602525A3600V SGD 2668.16
EHLL36030M71AA303600-
RFQ
EHLL36030M71303600 SGD 2410.18
RFQ
CHLL3603030A3600V SGD 2407.47
BHLL2603030A2600V-
RFQ
BHLL2603535A2600V-
RFQ
CHLL3603535A3600V SGD 2668.16
BHLL2604040A2600V-
RFQ
CHLL3604040A3600V SGD 2407.47
CHLL3604545A3600V-
RFQ
BHLL2604545A2600V-
RFQ
FHLL36050M72503600 SGD 2393.32
CHLL3605050A3600V SGD 2407.47
BHLL2605050A2600V-
RFQ
FHLL36060U31X603600-
RFQ
BHLL2606060A2600V-
RFQ
AHLL3606060A3600V-
RFQ
BHLL2607070A2600V-
RFQ
CHLL3607070A3600V-
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 (inc. GST)
AJDA36150150A600V SGD 3364.90
BJDA36175SA175600 SGD 6044.25
CJDA36175175A600V SGD 3364.90
BJDA36200SA200600 SGD 6044.25
AJDA36200200A600V SGD 3364.90
AJDA36225225A600V SGD 3364.90
BJDA36250U33X250600 SGD 5746.30
BJDA36250U44X250600-
RFQ
BJDA36250U31X250600 SGD 5503.18
BJDA36250CU33X250600-
RFQ
AJDA36250250A600V SGD 3880.98
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 (inc. GST)
AJJA36150150A600V SGD 4330.61
BJJA36175175A600V SGD 4330.61
CJJA36200SN200600-
RFQ
CJJA36200YP200600-
RFQ
CJJA36200SA200600-
RFQ
AJJA36200200A600V SGD 4330.61
CJJA36225SA225600 SGD 6044.25
AJJA36225225A600V SGD 4330.61
CJJA36250U44X250600 SGD 11652.48
CJJA36250U43X250600 SGD 9490.87
CJJA36250U33X250600 SGD 9490.87
CJJA36250U31X250600 SGD 9490.87
AJJA36250250A600V SGD 5048.13
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 (inc. GST)
AJLA36150150A600V-
RFQ
BJLA36175LC175600-
RFQ
BJLA36175175600-
RFQ
BJLA36200SA200600-
RFQ
AJLA36200200A600V SGD 7020.25
CJLA36225225A600V SGD 7020.25
BJLA36250U31X250600 SGD 11652.48
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 (inc. GST)
AKA3607070A3600V-
RFQ
AKA3608080A3600V SGD 6412.96
AKA3609090A3600V SGD 6412.96
RFQ
BKA26100AC100A2600V-
RFQ
CKA26100BC100A2600V SGD 3084.33
RFQ
DKA36100100A3600V-
RFQ
DKA36110110A3600V SGD 6317.66
RFQ
EKA36125-10211253600-
RFQ
BKA26125AC125A2600V-
RFQ
BKA26125BC125A2600V SGD 3084.33
RFQ
BKA26125AB125A2600V SGD 4330.61
RFQ
FKA36125125A3600V SGD 6412.96
EKA36150-10211503600 SGD 7187.63
RFQ
BKA26150AB150A2600V SGD 3084.33
RFQ
DKA36150150A3600V SGD 6412.96
BKA26150AC150A2600V-
RFQ
AKA36175175A3600V SGD 6412.96
EKA36200-10212003600-
RFQ
BKA26200BC200A2600V-
RFQ
BKA26200AC200A2600V-
RFQ
EKA36225-10212253600-
RFQ
AKA36225225A3600V SGD 6779.78
BKA26225BC225A2600V SGD 3084.33
RFQ
GKA26225AC225A2600V-
RFQ
BKA26225AB225A2600V SGD 3084.33
RFQ
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 (inc. GST)
AKC34110110A480V-
RFQ
AKC34125125A480V SGD 9095.51
RFQ
AKC34150150A480V-
RFQ
BKC34175-1212175480 SGD 8604.97
RFQ
AKC34175175A480V-
RFQ
BKC34200-1021200480-
RFQ
CKC34200200A480V-
RFQ
DKC34250250A480V SGD 14518.62
SQUARE D -

KCL Series Circuit Breakers

Square D KCL Series circuit breakers are suitable for installation within industrial control panels & switchboards for protecting electrical circuits & equipment against current overloads & short-circuits. These feed-thru circuit breakers feature thermal magnetic trip for providing both long time & instantaneous functions for reacting against severe short-circuits at once while avoiding tripping on mild overloads. They are ideal for applications demanding very high interrupting capacity and come equipped with line & load side lug terminals that ensure hassle-free wiring & eliminate chances of connections loosening due to vibrations. These 3 pole molded case circuit breakers are available in amperage ratings ranging from 125 to 250A on Raptor Supplies.

StyleModelAmpsPrice (inc. GST)
AKCL34125125A-
RFQ
BKCL34150150A-
RFQ
AKCL34200200A SGD 8718.40
RFQ
AKCL34225225A-
RFQ
AKCL34250250A-
RFQ
SQUARE D -

KH Series Circuit Breakers

Square D KH Series circuit breakers are ideal for installation within industrial control panels & switchboards for protecting electrical circuits & equipment against current overloads & short-circuits. These AC 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 both instantaneous & long time functions for reacting against severe short-circuits at once while avoiding tripping on mild overloads. Choose from a wide variety of these 3 pole circuit breakers, available in amperage ratings ranging from 70 to 250A on Raptor Supplies.

StyleModelAmpsPrice (inc. GST)
AKH3607070A-
RFQ
BKH3609090A SGD 6779.78
BKH36125125A SGD 6900.51
BKH36175175A SGD 6900.51
BKH36200200A SGD 7271.32
BKH36250250A SGD 7702.94
SQUARE D -

KI Series Circuit Breakers

Square D KI Series circuit breakers are ideal for installation within industrial control panels & switchboards for protecting electrical circuits & equipment against current overloads & short-circuits. These current limiting circuit breakers feature thermal magnetic trip for providing both long time & instantaneous trip functions that react against severe short-circuits at once while avoiding tripping on mild overloads. I-Line style plug-in design enables ease-of-installation and load side lug terminals allow hassle-free wiring. Choose from a broad range of these 3 pole circuit breakers in amperage ratings ranging from 110 to 250A on Raptor Supplies.

StyleModelAmpsVoltagePrice (inc. GST)
AKI36110110A600V-
RFQ
BKI36125125A600V-
RFQ
CKI36150150A600V-
RFQ
DKI36175175A600V-
RFQ
BKI36200200A600V-
RFQ
EKI36225-1380225600 SGD 8753.67
RFQ
BKI36225225A600V-
RFQ
CKI36250250A600V-
RFQ
SQUARE D -

Molded Case Circuit Breakers: LC Series

Square D LC Series circuit breakers are designed for installation in commercial and industrial electrical devices for protection against overcurrent and short-circuit conditions. These devices can handle current ratings up to 600A and provide a maximum interrupt capacity of 65kA at 480VAC. They feature I-Line style plug-in design equipped with load-side lug terminals to reduce the wiring and installation downtime, respectively and a thermal-magnetic trip for instantly reacting to severe power surges.

StyleModelAmpsNumber Of PolesVoltagePrice (inc. GST)
ALC36300300A3600V SGD 14883.84
ALC36350350A3600V-
RFQ
BLC36450-10214503600-
RFQ
ALC36450450A3600V-
RFQ
CLC36500500A3600V-
RFQ
BLC26600AC6002600-
RFQ
SQUARE D -

Molded Case Circuit Breakers: LE Series

Square D LE Series circuit breakers are designed to interrupt circuits exceeding the ambient operating temperature. These devices feature an electronic trip unit comprising current sensors, a Micrologic processor and a trip mechanism providing instantaneous, short-time and long-time current limiting functions. They are further integrated with I-Line style plug-in design and load-side lugs for reducing the installation and wiring downtime, respectively. Choose from a broad range of these current limiting breakers available in amperage ratings ranging from 250 to 600A on Raptor Supplies.

StyleModelAmpsVoltagePrice (inc. GST)
ALE36225LI200600-
RFQ
BLE36250LS250A600V-
RFQ
CLE36250LSG250A600V-
RFQ
DLE36400LI400A600V SGD 9490.87
CLE36400LIG400A600V-
RFQ
BLE36400LS400A600V-
RFQ
CLE36400LSG400A600V-
RFQ
ELE36600LS600A600V-
RFQ
CLE36600LSG600A600V-
RFQ
SQUARE D -

Molded Case Circuit Breakers: LEL Series

Square D LEL Series circuit breakers are specially designed to provide protection against damage from overload and short-circuit conditions. These UL-listed devices feature a bolt-on mounting design to ensure ease-of-installation in compact spaces and provide current ratings up to 600A at a maximum interrupt capacity of 65kA at 480VAC. They are integrated with a unique MicroLogic non-interchangeable trip for delivering long-time, short-time and instantaneous current limiting functions.

StyleModelAmps
ALEL36400LI400A
RFQ
BLEL36400LSG400A
RFQ
BLEL36600LSG600A
RFQ
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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 (inc. GST)
ALI36400400A-
RFQ
BLI36450450A-
RFQ
CLI36500500A SGD 14883.84
ALI36600600A-
RFQ
SQUARE D -

HDA Series Circuit Breakers

Square D circuit breakers are suitable for limiting the let-through current for protecting downstream components in power distribution applications. These PowerPact circuit breakers feature a non-interchangeable thermal-magnetic trip that provides long-time & instantaneous current limiting functions for reacting against severe power surges at once while avoiding tripping on mild overloads. They are further integrated with I-Line style plug-in design for ensuring ease-of-installation with load-side lug terminals. Choose from a wide range of these double- & triple-phase circuit breakers available in amperage ratings ranging from 15 to 150A on Raptor Supplies.

StyleModelAmpsNumber Of PolesVoltagePrice (inc. GST)
AHDA260151152600 SGD 1659.66
AHDA260152152600 SGD 1659.66
AHDA260154152600 SGD 1659.66
BHDA3601515A3600V SGD 1632.46
AHDA260202202600 SGD 1659.66
AHDA260201202600 SGD 1659.66
AHDA260204202600 SGD 1659.66
CHDA3602020A3600V SGD 1632.46
AHDA260254252600-
RFQ
AHDA260251252600-
RFQ
AHDA260252252600 SGD 1792.88
CHDA3602525A3600V SGD 1925.88
AHDA260304302600 SGD 1659.66
AHDA260305302600 SGD 1659.66
AHDA260302302600 SGD 1659.66
AHDA260301302600 SGD 1659.66
CHDA3603030A3600V SGD 1632.46
DHDA26035235A2600V SGD 1746.23
CHDA3603535A3600V SGD 1925.88
DHDA26035135A2600V-
RFQ
DHDA26035435A2600V-
RFQ
AHDA260402402600 SGD 1659.66
AHDA260404402600 SGD 1659.66
AHDA260401402600 SGD 1659.66
CHDA3604040A3600V SGD 1632.46
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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.

Working Mechanism

Molded case circuit breaker's working mechanism includes following steps:

  • In the normal state, molded case circuit breakers allow electrical current to flow through the circuit uninterrupted.
  • When an overcurrent condition occurs, the MCCB's internal sensors detect the excess current flowing through the circuit.
  • They have two main trip mechanisms: electromagnetic trip and thermal trip.
  • The electromagnetic trip detects sudden, high-current surges, similar to short circuits, and quickly opens the circuit to cut power.
  • The thermal trip reacts to prolonged overloads by heating up, causing the MCCB to trip and disconnect the circuit.
  • Once the trip mechanism is activated, it triggers a mechanical release within the circuit breaker.
  • Hence, the breaker's contacts move quickly to the open position.
  • When the contacts are open, the MCCB interrupts the electrical flow, effectively cutting off power to the circuit.
  • The circuit remains in this disconnected state until manually reset by the user.

Features

General Electric Bolt-On Circuit Breakers:

  • These General Electric TEYH Series MCCBs have a thermal-magnetic, non-interchangeable trip unit to protect from severe power surges while avoiding tripping on mild overloads.
  • They also have a bolt-on mounting facility for convenience and compatibility with lug-lug / unit-mount applications.
  • These UL-listed breakers are available in single, two and three-pole configurations and accommodate universal 10 to 4 AWG size wires.

Square D PowerPacT Circuit Breakers :

  • These Square D MCCBs have a new front-facing and semi-transparent cover for easy access to accessories.
  • They have current ratings ranging from 15 to 125A and offer a maximum breaking capacity of 65kA at 480VAC.
  • These RoHS and REACH-compliant breakers feature dual-break rotating contacts that reduce peak current during a short circuit fault.

Eaton HKD Series Circuit Breakers :

  • Eaton HKD Series circuit breakers protect against overload and short circuit conditions in 480Y / 277V (three-phase, four-wire) distribution panels.
  • They have 2-pole construction and can serve two separate circuits or a complete single circuit when short-circuited.

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.