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.

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Molded Case Circuit Breakers

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 -

THFK Series Molded Case Circuit Breakers, 3 Poles

Style	Model	Amps	Price (ex. VAT)
A	THFK236070WL	70A	-	RFQ
A	THFK236080WL	80A	-	RFQ
A	THFK236090WL	90A	€5,190.06	RFQ
A	THFK236100WL	100A	€5,190.06	RFQ
A	THFK236110WL	110A	-	RFQ
A	THFK236150WL	150A	-	RFQ
A	THFK236175WL	175A	-	RFQ
A	THFK236200WL	200A	-	RFQ
A	THFK236225WL	225A	-	RFQ
A	THFK236F000	225A	-	RFQ

EATON -

CHFPAFGF Series Circuit Breakers

Style	Model	Amps	Price (ex. VAT)
A	CHFPAFGF115	15	€89.48	RFQ
A	CHFPAFGF120	20	€89.48	RFQ

EATON -

CHNT Series Circuit Breakers

Style	Model	Amps	Price (ex. VAT)
A	CHNT1515	15	€67.75	RFQ
A	CHNT1520	15	€67.75	RFQ
A	CHNT2020	20	€110.02	RFQ

EATON -

FD Series Bolt On Circuit Breakers

Style	Model	Amps
A	FD3090S22	90	RFQ
A	FD3200S	200	RFQ
A	FPS3200	200	RFQ

EATON -

HCA Series Circuit Breakers

Style	Model	Amps	Number Of Poles	Price (ex. VAT)
A	HCA2100	100	2	€4,456.86	RFQ
B	HCA3100	100	3	-	RFQ
A	HCA2125	125	2	-	RFQ
B	HCA3125	125	3	-	RFQ
B	HCA3150	150	3	-	RFQ
A	HCA2175	175	2	-	RFQ
B	HCA3175	175	3	-	RFQ
B	HCA3200	200	3	-	RFQ
A	HCA2225	225	2	-	RFQ
B	HCA3225	225	3	-	RFQ

EATON -

C Series Molded Case Circuit Breakers

Style	Model	Aic Rating	Amps	Frame Type	Number Of Poles	Voltage	Price (ex. VAT)
A	CHLD3600T77W	-	-	-	-	-	-	RFQ
B	FD3175-GR1	-	-	-	-	-	€8,779.48	RFQ
C	EHD1025	-	-	-	-	-	€344.12
D	EHD1025-GR1	-	-	-	-	-	€494.78	RFQ
D	EHD1040-GR1	-	-	-	-	-	€494.78	RFQ
C	EHD1030	-	-	-	-	-	€344.12
D	EHD1030-GR1	-	-	-	-	-	€494.78	RFQ
C	EHD1040	-	-	-	-	-	€299.71
D	EHD1050-GR1	-	-	-	-	-	€494.78	RFQ
E	EHD2015	-	-	-	-	-	€686.29
F	EHD2015-GR1	-	-	-	-	-	€1,477.68	RFQ
G	EHD2020-GR1	-	-	-	-	-	€1,477.68	RFQ
B	FD3100-GR1	-	-	-	-	-	€3,900.51	RFQ
E	EHD2025	-	-	-	-	-	€686.29
G	EHD2025-GR1	-	-	-	-	-	€1,477.68	RFQ
E	EHD2030	-	-	-	-	-	€686.29
C	EHD1015	-	-	-	-	-	€344.12
B	FD3200-GR1	-	-	-	-	-	€8,779.48	RFQ
H	EHD2060V	-	-	-	-	-	€1,419.99	RFQ
I	FD3225-GR1	-	-	-	-	-	€8,779.48	RFQ
G	EHD2070-GR1	-	-	-	-	-	€1,939.16	RFQ
J	FDCE315021	-	-	-	-	-	€15,602.07
K	EHD2100VL	-	-	-	-	-	€1,939.16	RFQ
J	FDCE310022	-	-	-	-	-	€9,369.66
L	EHD3020H08U14Z04	-	-	-	-	-	€3,656.47	RFQ

EATON -

HKD Series Circuit Breakers, 3 Pole, Fixed Trip Unit

Style	Model	Amps	Price (ex. VAT)
A	HKD3300	300A	€5,533.60
A	HKD3400	400A	€5,533.60

EATON -

JG Series Circuit Breakers, Fixed Thermal Magnetic Trip

Style	Model	Aic Rating	Amps	Price (ex. VAT)
A	JGH3175FAG	-	-	€2,976.17
A	JGH3250FAG	-	-	€3,101.09
B	JGE3100FAG	25kAIC@480V	100A	€3,080.36
B	JGE3150FAG	25kAIC@480V	150A	€3,095.17
B	JGE3175FAG	25kAIC@480V	175A	€3,220.50
B	JGE3200FAG	25kAIC@480V	200A	€2,775.26
B	JGE3250FAG	25kAIC@480V	250A	€3,431.22
C	JGS3100FAG	35kAIC@480V	100A	€2,004.07
C	JGS3150FAG	35kAIC@480V	150A	€2,004.07
C	JGS3175FAG	35kAIC@480V	175A	€3,684.67
C	JGS3250FAG	35kAIC@480V	250A	€2,367.89
C	JGS3200FAG	35kAIC@480V	200A	€2,004.07
A	JGH3100FAG	65kAIC@480V	100A	€2,976.17
A	JGH3150FAG	65kAIC@480V	150A	€7,384.81
A	JGH3200FAG	65kAIC@480V	200A	€7,517.29

EATON -

Type GHB Thermal-Magnetic Circuit Breakers

Style	Model	Price (ex. VAT)
A	GHB1015	€200.20
B	GHB2030	€551.79
B	GHB2080	€714.10
B	GHB2070	€714.10
C	GHB2060	€576.86
B	GHB2050	€576.86
B	GHB2040	€576.86
B	GHB2025	€613.91
D	GHB2020	€551.79
A	GHB1020	€200.20
B	GHB2015	€551.79
A	GHB1050	€250.60
A	GHB1040	€250.60
A	GHB1035	€261.13
A	GHB1030	€221.94
A	GHB1025	€221.94
E	GHB3045	€832.69

EATON -

C Series Molded Case Circuit Breakers, Thermal Magnetic Trip

Style	Model	Amps	Price (ex. VAT)
A	KD3250	250A	€3,901.71
A	KD3300	300A	€3,901.71
A	KD3350	350A	€3,901.71
A	KD3400	400A	€3,901.71

EATON -

G Series Electronic Molded Case Circuit Breakers

Style	Model	Price (ex. VAT)
A	NGH312032E	€17,912.69
A	NGH312033E	€17,034.89
A	NGH312035E	€19,375.25
A	NGH312036E	€19,732.65
A	NGS312032E	€17,034.89
A	NGS312033E	€15,925.21
A	NGS312035E	€35,660.09

EATON -

Molded Case Circuit Breakers

Style	Model	Amps	Item	Price (ex. VAT)
A	PDG12XHMS307	-	Handle Operating Mechanism	€36.38
B	PDG23F0050TFFL	-	-	€1,072.92
B	PDG23G0035TFFL	-	-	€1,108.10
B	PDG23F0060TFFL	-	-	€1,065.24
B	PDG22F0030TFFL	-	-	€832.18
C	PDG13F0050TFFJ	-	-	€1,085.28
D	PDG11M0070TFFJ	-	-	€1,260.71
E	PDG43M0400TFAJ	-	-	€8,358.15
F	PDG53M1200E3RN	-	-	€19,056.69
G	PDG33M0400TFAJ	-	-	€5,929.45
B	PDG22F0040TFFL	-	-	€836.64
C	PDG13C0040TFFJ	-	-	€909.87
C	PDG13G0060TFFJ	-	-	€972.22
B	PDG21F0020TFFL	-	-	€593.47
B	PDG23F0200TFFJ	-	-	€2,224.42
C	PDG13M0080TFFJ	-	-	€1,822.94
C	PDG13F0040TFFJ	-	-	€1,034.40
H	PDG33G0400TFAJ	-	-	€3,900.52
I	PDD23G0175TFFL	-	-	€1,870.99
B	PDG21F0030TFFL	-	-	€592.65
B	PDG22F0070TFFL	-	-	€975.53
I	PDG22G0100TFFL	-	-	€1,042.55
B	PDG23G0050TFFL	-	-	€1,128.32
G	PDG33M0300TFAJ	-	-	€6,757.33
F	PDG53K1200E2NN	-	-	€14,367.61

EATON -

HJD Series Thermal Magnetic Circuit Breakers

Style	Model	Amps	Price (ex. VAT)
A	HJD3200	200A	€4,372.57
A	HJD3250	250A	€4,882.79

EATON -

HFD Series, Molded Case Circuit Breakers

Style	Model	Amps	Number Of Poles	Voltage	Price (ex. VAT)
A	HFD3015	15A	3	600V	€2,817.13
A	HFD3020	20A	3	600V	€2,778.14
A	HFD3025	25A	3	600V	€2,480.69
A	HFD3030	30A	3	600V	€3,442.62
B	HFD3035	35A	3	600V	€1,768.08
A	HFD3040	40A	3	600V	€2,494.15
C	HFD3045	45A	3	600V	€1,768.08
A	HFD3050	50A	3	600V	€2,456.01
A	HFD3060	60A	3	600V	€2,898.13
A	HFD3070	70A	3	600V	€3,054.11
A	HFD3080	80A	3	600V	€3,263.72
D	HFD1090	90	1	277V	-	RFQ
A	HFD3090	90A	3	600V	€3,072.57
A	HFD3100	100A	3	600V	€3,893.71
C	HFD3110	110A	3	600V	€2,976.17
A	HFD3125	125A	3	600V	€8,518.69
A	HFD3150	150A	3	600V	€7,574.36
E	HFD2175	175	2	480/600V	€2,197.53
A	HFD3175	175A	3	600V	€7,373.79
A	HFD3200	200A	3	600V	€7,354.84
A	HFD3225	225A	3	600V	€8,105.54
F	HFD2225	225A	2	600V	€2,197.53

EATON -

BRAFGF Series Plug In Circuit Breakers
Eaton BRAFGF Series plug-in circuit breakers protect industrial control panels, motor control centres and power distribution panels against overvoltages. These circuit breakers offer diagnostic trip codes to identify overloads and complex events for easy troubleshooting. They have LEDs and a clear TEST button for easy reading of the trip codes. These circuit breakers feature a field reset function for eliminating trip history to ensure accurate indication of recent trips and flexibility during troubleshooting. These low-power-consuming circuit breakers reduce heat production in surrounding areas and reduce the need for callbacks and improve overall efficiency.

Style	Model	Amps	Price (ex. VAT)
A	BRAFGF115	15	€112.16	RFQ
A	BRAFGF120	20	-	RFQ

EATON -

CH Series Circuit Breakers

Style	Model	Amps	Number Of Poles	Voltage	Price (ex. VAT)
A	CH110	15	1	120V	-	RFQ
B	CH215SW	15	2	240V	-	RFQ
C	CH115EPD	15	1	120V	-	RFQ
D	CH115ST	15	1	120V	-	RFQ
E	CH115CAFPN	15	1	120V	€148.01	RFQ
F	CH220ST	20	2	240V	-	RFQ
B	CH220SW	20	2	240V	-	RFQ
D	CH120ST	20	1	120V	-	RFQ
G	CH120GFAF	20	1	120V	-	RFQ
G	CH120GF	20	1	120V	€187.45	RFQ
C	CH120EPD	20	1	120V	-	RFQ
E	CH120CAFPN	20	1	120V	€148.01	RFQ
H	CH120CAFA	20	1	120V	€157.59	RFQ
H	CH120CAF	20	1	120V	€157.59	RFQ
I	CH120AFGF	20	1	120V	-	RFQ
J	CH220AFIT	20	2	240V	€552.39	RFQ
K	CH125	25	1	120V	-	RFQ
L	CH225	25	2	240V	-	RFQ
M	CH230GF	30	2	240V	-	RFQ
K	CH130	30	1	120V	-	RFQ
N	CH330SW	30	3	240V	-	RFQ
D	CH130ST	30	1	120V	-	RFQ
G	CH130GF	30	1	120V	-	RFQ
C	CH130EPD	30	1	120V	-	RFQ
B	CH230SW	30	2	240V	-	RFQ

EATON -

BR Series Plug In Circuit Breakers

Style	Model	Amps	Number Of Poles	Voltage	Price (ex. VAT)
A	BR215AFIT	15	2	240V	-	RFQ
B	BR120CAF	20	1	120V	€147.15	RFQ
B	BR120CAFA	20	1	120V	-	RFQ
A	BR220AF	20	2	240V	€411.84	RFQ
C	BR290ST	90	2	240V	-	RFQ

GENERAL ELECTRIC -

THJK Series Molded Case Circuit Breakers, 3 Poles

Style	Model	Amps	Frame Type	Price (ex. VAT)
A	THJK436125WL	125A	TJK	-	RFQ
A	THJK436175WL	175A	TJK	-	RFQ
A	THJK436200WL	200A	TJK	€5,978.02	RFQ
A	THJK436225WL	225A	TJK	-	RFQ
B	THJK436250WL	250A	TJK	€5,978.02
A	THJK636250WL	250A	THJK	-	RFQ
A	THJK436300WL	300A	TJK	€5,978.02	RFQ
A	THJK636300WL	300A	THJK	€3,528.37	RFQ
A	THJK436350WL	350A	TJK	€5,978.02	RFQ
A	THJK436400WL	400A	TJK	€5,978.02	RFQ
A	THJK436F000	400A	TJK	€4,118.45	RFQ
A	THJK636400WL	400A	THJK	-	RFQ
A	THJK636450WL	450A	THJK	-	RFQ
A	THJK636500WL	500A	THJK	€6,741.59	RFQ
A	THJK636600WL	600A	THJK	€6,741.59	RFQ

GENERAL ELECTRIC -

TED Series Circuit Breakers
General Electric TED Series moulded case circuit breakers provide overcurrent and short circuit protection when used with GE panelboards. These feed-thru breakers feature a thermal magnetic trip for instantaneous and long-time overcurrent protection and a toggle actuator for manual tripping operation & indicating the status of the trip. They are equipped with line & load side lug terminals to accommodate aluminium and copper wires of sizes between 14 AWG and 2/0 AWG. Selected models feature bolt-on mounting style for installation in vertical or horizontal orientation. These TED circuit breakers are available in 277VAC & 480VAC voltage ratings on Raptor Supplies.

Style	Model	Aic Rating	Amps	Max. Wire Size	Min. Wire Size	Number Of Poles	Voltage	Price (ex. VAT)
A	TED124015WL	-	15	-	-	2	-	€1,262.91
B	TED124020WL	-	20	8 AWG	14 AWG	2	-	€1,196.18
B	TED124025WL	-	25	8 AWG	14 AWG	2	-	€1,171.32
B	TED124030WL	-	30	8 AWG	14 AWG	2	-	€1,176.11
B	TED124035WL	-	35	3 AWG (Cu), 1 AWG (Al)	14 AWG (Cu), 12 AWG (Al)	2	-	€1,178.68
B	TED124040WL	-	40	3 AWG (Cu), 1 AWG (Al)	14 AWG (Cu), 12 AWG (Al)	2	-	€1,176.11
B	TED124045WL	-	45	3 AWG (Cu), 1 AWG (Al)	14 AWG (Cu), 12 AWG (Al)	2	-	€1,178.68
B	TED124050WL	-	50	-	-	2	-	€1,171.32
B	TED124060WL	-	60	3 AWG (Cu), 1 AWG (Al)	14 AWG (Cu), 12 AWG (Al)	2	-	€1,216.08
B	TED124070WL	-	70	2/0 AWG	6 AWG (Cu), 4 AWG (Al)	2	-	€1,526.43
C	TED113Y100	14kAIC@240V	100A	-	-	1	277V	-	RFQ
D	TED124010WL	18kAIC@480V	10A	-	-	2	480V	€272.14	RFQ

WEG -

UVT-Series Under Voltage Releases

Style	Model	Price (ex. VAT)
A	UVT E54 ACW 125-800	€120.11	RFQ
A	UVT E26 ACW 125-800	€120.11	RFQ
A	UVT E27 ACW 125-800	€120.11	RFQ
A	UVT E10 ACW 125-800	€120.11	RFQ
A	UVT E14 ACW 125-800	€120.11	RFQ

WEG -

ACW-Series Molded Case Circuit Breaker, Mechanical Interlocks

Style	Model	Price (ex. VAT)
A	MIT ACW 800	€224.89	RFQ
A	MIT ACW 250	€192.69	RFQ
A	MIT ACW 400	€211.09	RFQ
A	MIT ACW 125	€172.75	RFQ

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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.