Molded Case Circuit Breakers
Molded case circuit breakers (MCCBs) provide overcurrent and short circuit protection for electrical systems in residential, commercial, and industrial settings. They are designed and tested for use in a variety of applications where reliable and safe operation under conditions of fault or excessive current flow is essential for electrical system integrity. With their robust molded case design, MCCBs are highly durable and capable of withstanding the demands of a wide range of applications—everything from branch circuit protection in a home to high-capacity circuits in an industrial environment.
MCCBs usually have thermal-magnetic mechanisms or electronic trip units for exact and effective protection. Thermal-magnetic MCCBs employ thermal overload protection elements and magnetic elements for short-circuit protection. These basic mechanisms still provide the kinds of versatile, dependable, and multipurpose features that make MCCBs suitable for a range of uses.
ABB Molded Case Circuit Breakers
Benshaw Molded Case Circuit Breakers
Eaton Molded Case Circuit Breakers
IDEC Molded Case Circuit Breakers
Lovato Molded Case Circuit Breakers
Square D Molded Case Circuit BreakersFound 70245 items
Filters
Found 70245 items
Manufacturer
ABB (8900)
Adalet (55)
Benshaw (95)
Eaton (57025)
IDEC (809)
Killark (10)
Lovato (51)
Schneider Electric (3300)
Square D (3300)
Component
Disconnect Enclosure (20)
AFCI Circuit Breaker (1)
Air Circuit Breaker (3475)
Air Circuit Breaker Switch (217)
Circuit Breaker Enclosure (47)
Direct Current Circuit Breaker (435)
Electronic Molded Case Circuit Breaker (1964)
Enclosed Circuit Breaker (17)
Engine Generator Molded Case Circuit Breaker (39)
Frame Only (279)
Breaker Amperage Rating
0.5 Amp (2)
1 Amp (4)
1.5 Amp (1)
1.6 Amp (14)
10 Amp (58)
100 Amp (334)
1000 Amp (518)
110 Amp (51)
1200 Amp (426)
125 Amp (178)
Breaker Number of Poles
Four Pole (3579)
Single Pole (260)
Six Pole (4)
Three Pole (4571)
Two Pole (349)
Amperage (Molded Case Breaker)
0.16 Amp (3)
0.25 Amp (3)
0.3 Amp (14)
0.4 Amp (3)
0.5 Amp (36)
0.63 Amp (3)
0.75 Amp (15)
1 Amp (61)
1.5 Amp (2)
1.6 Amp (3)
Enclosure Height
11" (15)
13" (11)
18" (9)
20" (5)
24" (5)
36" (6)
Enclosure Width
12" (16)
6" (26)
7" (9)
Frame Type (Molded Case Breaker)
1 Frame (770)
100F (45)
1200A Frame (2)
1200F (25)
125A Frame (3)
150F (9)
2 Frame (12375)
225A Frame (3)
250F (7)
3 Frame (25638)
Interrupt Rating (Molded Case Breaker)
1.5 Ka (8)
10 Ka (253)
10 Ka 1000Y/577 Volt (10)
10 Ka 1200 Volt (23)
10 Ka 125 Volt (38)
10 Ka 240 Volt (84)
10 Ka 250 Volt (326)
10 Ka 250 Volt (DC) (15)
10 Ka 400 Volt (2)
10 Ka 577 Volt (91)
Enclosure Depth
5" (40)
6" (5)
8" (6)
Interrupt Code (Molded Case Breaker)
B Interrupt Rating (84)
D Interrupt Rating (639)
G Interrupt Rating (709)
J Interrupt Rating (500)
K Interrupt Rating (8)
L Interrupt Rating (109)
R Interrupt Rating (15)
Maximum Voltage (Molded Case Breaker)
1000 VAC (17)
1000 VDC (37)
1000Y/577 VAC (16)
1000Y/577 VAC/250 VDC (2)
110 VAC (1)
115 VAC (1)
120 VAC (247)
120/240 VAC (1)
1200 VAC (23)
125 VAC (22)
Enclosure NEMA Rating
NEMA Type 4X (55)
NEMA Type 7 (55)
NEMA Type 9 (55)
Poles (Molded Case Breaker)
Single Pole (1674)
Two Pole (6264)
Three Pole (30825)
Four Pole (22004)
One Pole (96)
Enclosure Composition
Aluminum Alloy (55)
Breaker Voltage Rating
1000 VAC (2)
1000 VDC (2)
1150 VAC (1)
120 VAC (212)
120/240 VAC (237)
1200 VDC (1)
125 VDC (189)
208Y/120 VAC (11)
230 VAC (62)
240 VAC (457)
Communications
CAM Link (2855)
Modbus RTU (7094)
Modbus RTU And CAM Link (4222)
Modbus/Relay (1)
Relays (704)
Relays And ZSI (687)
Zone Selective Interlock (66)
Interrupt Rating
10 Ka (40)
10 Ka 125 Volt (DC) (5)
10 Ka 240 Volt (5)
10 Ka 250 Volt (DC) (38)
10 Ka 375 Volt (DC) (13)
10 Ka 480Y/277 Volt (24)
10 Ka 500 Volt (DC) (5)
100 Ka (707)
100 Ka 240 Volt (38)
100 Ka 250 Volt (DC) (9)
Mounting (Molded Case Breaker)
Busbar (52)
DIN Rail (362)
I-Line (841)
Panel (2237)
Panel Mount (675)
Plug-In (1)
Unit Mount (922)
Number of Jaws
13 (1)
4 (26)
4 Without Jaw Release (8)
5 (5)
7 (2)
Number of Meter Sockets
2 (1)
3 (1)
4 (1)
6 (1)
Number of Spaces
10 (2)
12 (6)
16 (5)
20 (12)
3 (1)
30 (12)
4 (12)
42 (6)
54 (3)
60 (1)
Phase
Single Phase (63)
Three Phase (6)
Trip Unit (Molded Case Breaker)
Ekip DIP E-LSIG (12)
Ekip DIP LIG (108)
Ekip DIP LS/I (137)
Ekip DIP LSI (128)
Ekip DIP LSIG (128)
Ekip DIP M-I (17)
Ekip G DIP LS/I (105)
Ekip G Hi-Touch LSIG (100)
Ekip G Touch LSIG (102)
Ekip Hi-Touch LSI (171)
Trip Unit Type
310+ (1)
310+ Electronic LSG (1)
310+ Electronic LSI (4)
Adjustable Magnetic (7)
Adjustable Thermal (6)
Common (1)
Electronic ALSI (29)
Electronic ALSIG (32)
Electronic LI (5)
Electronic LIG (4)
UL Listing (Molded Case Breaker)
Ekip DIP LS/I (15)
Ekip DIP LSI (1)
Ekip DIP LSIG (2)
Ekip DIP M-I (2)
IEC (4)
MA (6)
MCS (2)
TMA (15)
TMF (30)
UL (89)
Normally In Stock
Schneider Electric QBP22200TM PowerPact Q - molded case circuit breaker - 2-pole - 10 kA - 240 V - 200 A
Free U.S Ground shipping
$367.54
$306.28
Normally In Stock
Schneider Electric QBL22150 Square D Breaker Q Frame 150 Amp Two Pole
Free U.S Ground shipping
$533.60
$444.67
Normally In Stock
Eaton CHN215CAF Two Pole, 240 Max Volt, 15 Amp
Free U.S Ground shipping
$238.25
$198.54
Normally In Stock
Eaton MPL2060 Power Pedestal Breaker - 60 Amp, 125/250 VAC, Two Pole
Free U.S Ground shipping
$212.98
$177.48
Normally In Stock
Schneider Electric QBP22125TM PowerPact Q - molded case circuit breaker - 2-pole - 10 kA - 240 V - 125 A
Free U.S Ground shipping
$606.44
$505.37
Normally In Stock
Schneider Electric QBP22100TM PowerPact Q - molded case circuit breaker - 2-pole - 10 kA - 240 V - 100 A
Free U.S Ground shipping
$627.00
$522.50
Normally In Stock
Schneider Electric QBM22200TN Square D Breaker Q Frame 200 Amp Two Pole
Free U.S Ground shipping
$630.70
$525.58
Normally In Stock
Eaton EHD3070V Molded Case Circuit Breaker, C Series, 480 Max Volt, 70 Amp, Three Pole
Free U.S Ground shipping
$802.19
$668.49
Normally In Stock
Schneider Electric BDL26050 Circuit breaker, PowerPacT B, 50A, 2 pole, 600Y/347VAC,
Free U.S Ground shipping
$758.90
$632.42
Normally In Stock
Schneider Electric QGP22200TM PowerPact Q - molded case circuit breaker - 2-pole - 65 kA - 240 V - 200 A
Free U.S Ground shipping
$1894.67
$1578.89
Normally In Stock
Schneider Electric QDP22175TM PowerPact Q - molded case circuit breaker - 2-pole - 25 kA - 240 V - 175 A
Free U.S Ground shipping
$1423.80
$1186.50
Normally In Stock
Schneider Electric QDP22200TM PowerPact Q - molded case circuit breaker - 2-pole - 25 kA - 240 V - 200 A
Free U.S Ground shipping
$1533.18
$1277.65
Normally In Stock
Schneider Electric BGA34060Y PowerPact B Circuit Breaker, 60A, 3P, 480Y/277V AC, 35kA at 480/277 UL, I-Line
Free U.S Ground shipping
$1141.97
$951.64
Normally In Stock
Eaton PDG23F0020TFFL Complete Breaker - 3P, 20 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$606.64
$505.53
Normally In Stock
Eaton PDD23F0100TFFL Power Defense Series - 3P, 100 Amp, 240 VAC
Free U.S Ground shipping
$562.14
$468.45
Normally In Stock
Eaton PDF33G0400B2NN Power Defense Series - 3P, 400 Amp, 600 VAC
Free U.S Ground shipping
$4498.38
$3748.65
Normally In Stock
Eaton PDG23G0015TFFJ Complete Breaker - 3P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$644.50
$537.08
Normally In Stock
Eaton PDG23M0035TFFL - 35 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1053.29
$877.74
Normally In Stock
Eaton PDG23M0015TFFL - 15 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$962.51
$802.09
Normally In Stock
Eaton PDG23M0030TFFL - 30 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1053.29
$877.74
Normally In Stock
ABB XT1NU3060AAA000XXX - XT1 60 Amp, 3P, 480 VAC
Free U.S Ground shipping
$360.07
$300.06
Normally In Stock
ABB XT1NU4040AFF000XXX MCCB - 600Y/347 VAC, 40 Amp, Four Pole
Free U.S Ground shipping
$389.18
$324.32
Normally In Stock
Eaton PDG24N0225D2DK - 225 Amp, Four Pole, 600 VAC
Free U.S Ground shipping
$2986.26
$2488.55
Normally In Stock
ABB S802S-D50 High Performance Circuit Breaker - 50 Amp, Two Pole, 400 VAC
Free U.S Ground shipping
$510.13
$425.11
Normally In Stock
ABB XT4NU3175AFF000XXX MCCB - 600 VAC, 175 Amp, Three Pole
Free U.S Ground shipping
$1088.21
$906.84
Normally In Stock
ABB XT5NU350BMFF000XXX MCCB - 600 VAC, 500 Amp, Three Pole
Free U.S Ground shipping
$2795.50
$2329.58
Normally In Stock
Eaton PDG23F0030TFFL Complete Breaker - 3P, 30 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$606.64
$505.53
Normally In Stock
Eaton PDG23M0020TFFK - 20 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$923.17
$769.31
Normally In Stock
Eaton PDG23G0030TFFJ Complete Breaker - 3P, 30 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$692.38
$576.98
Normally In Stock
Eaton PDG23F0060TFFL Complete Breaker - 3P, 60 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$606.64
$505.53
Normally In Stock
Eaton PDG23F0100TFFL Complete Breaker - 3P, 100 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$689.09
$574.24
Normally In Stock
Eaton PDG23M0225B2NJ - 225 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1779.40
$1482.83
Normally In Stock
Eaton PDG23M0100B2NL - 100 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1145.10
$954.25
Normally In Stock
Eaton PDG23P0020TFFL - 20 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1211.63
$1009.69
Normally In Stock
Eaton PDG23M0060B2NL - 60 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1069.75
$891.46
Normally In Stock
Eaton PDG23P0125TFFJ - 125 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1823.24
$1519.37
Normally In Stock
ABB XT2HU3007MFF000XXX MCCB - 600 VAC, 7 Amp, Three Pole
Free U.S Ground shipping
$892.82
$744.02
Normally In Stock
Eaton PDG23P0200TFFL - 200 Amp, Three Pole, 600 VAC
Free U.S Ground shipping
$1859.50
$1549.58
Normally In Stock
ABB XT4SQ3200AFF000XXX - XT4 200 Amp, 3P, 600 VAC
Free U.S Ground shipping
$1606.26
$1338.55
Normally In Stock
ABB XT4XU3250EFF000XXX - XT4 250 Amp, 3P, 600 VAC
Free U.S Ground shipping
$5482.19
$4568.49
Normally In Stock
IDEC NRAR1100-20A-MA - Single Pole, 20 Amp, 250 VAC
Free U.S Ground shipping
$28.82
$24.02
Normally In Stock
Eaton PDG33G0400P2MN Power Defense MCCB - 400 Amp, 600 VAC, Three Pole, 3 Frame
Free U.S Ground shipping
$4322.16
$3601.80
Normally In Stock
Lovato SM3R9000 Motor Protection Circuit Breaker - 90 Amp, 690 VAC, Magnetic, Thermal, Rotary Knob
Free U.S Ground shipping
$725.06
$604.22
Normally In Stock
ABB XT3NU3225DFF000XXX - Three Pole, 25 kA 480 Volt, 600Y/347 VAC
Free U.S Ground shipping
$628.42
$523.68
Normally In Stock
ABB TED134C5030 Molded Case Circuit Breaker - 30 Amp, Three Pole, 480 VAC
Free U.S Ground shipping
$2196.46
$1830.38
More Information about Molded Case Circuit Breakers
One of the principal benefits of molded case circuit breakers is their competence in managing overcurrent protection while sustaining dependable performance and ensuring safety. With a complete range of ratings and frame sizes, MCCBs are well suited to circuits of all sorts and with all kinds of current capacities and demands.
What is a Circuit Breaker?
There are two different types of technologies that are commonly used in circuit breakers.
Magnetic Breakers
Magnetic Breakers are designed to react to short circuits or sharp spikes in voltage and current. The more current that passes through the breaker’s electromagnet, the stronger the magnet becomes. When the current exceeds the rating for that particular breaker, the magnetic force becomes strong enough that it will pull the contact back and disconnect it from the other contact, disconnecting power from the device.
Thermal Protection Breakers
Thermal Protection Breakers protect against a sustained overcurrent, or a higher current, for a longer period of time. Thermal protection uses a Bimetal strip that will bend the contacts away from each other to disconnect power. Thermal Magnetic Breakers are the most common type of circuit breakers. They combine magnetic technology to protect against short circuits or sharp spikes and thermal technology that protects against sustained overcurrent for a long period of time.