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Square D Insulated Case and Molded Case Circuit Breakers

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1001 - 1050 of 1825 listings

300 Amps, Square D, LA400S, Circuit Breaker Enclosure with Q4L3300 Circuit Breaker, 240V

OK Sales Inc | Burlington, NC
Seller: OK Sales Inc
Location: Burlington, NC
Mfr: Square D
Model: LA400S
Square D LA400S Circuit Breaker Enclosure with Q4L3300 Circuit Breaker 300A 240V., Condition Notes: 2 knockouts. Ready to install., Used working condition. Item pictured is the exact item you will receive, unless multiple quantities listed., Most Items ship same or next business day of payment received from North ...more

300 Amps, Square D #LAL26300, Circuit Breaker, 2-Pole, 600 Volts, 22kA (2 available)

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LAL26300 300A 600V 2P L-Frame Breaker w/ LA11212 Auxiliary Contact, PART NUMBER: LAL26300, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CONDITION: Used, INTERRUPT RATING: 22kA @ 600VAC; 30kA @ 480VAC; 42kA @ 240VAC, MAXIMUM AMPERAGE: 300A, POLES: 2, VOLTAGE: 600 Volt, Square D LAL26300 Molded Case Circuit ...more

300 Amps, Square D #LAL36300, Circuit Breaker, 3-Pole, 600 Volts, Lug to Lug

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LAL36300, PART NUMBER: LAL36300, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LAL36300 Circuit Breaker 300A 3P 600V 3PH Lug to Lug.

300 Amps, Square D, LAL36300, #1419363

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LAL36300

300 Amps, Square D, LAL36300, adjustable trips

Row Electrical Equipment | Toledo, OH
Seller: Row Electrical Equipment
Location: Toledo, OH
Mfr: Square D
Model: LAL36300

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Insulated Case and Molded Case Circuit Breakers (also known as MCCBs or compact circuit breakers) are protective devices designed to interrupt electrical flow during overcurrent or short circuit conditions. Insulated case breakers are typically larger and used in industrial settings, while molded case breakers are compact and widely used in residential, commercial, and industrial applications. Both types offer reliable circuit protection, ease of installation, and durability for various electrical systems.

300 Amps, Square D, LAP36300MB, Bolt-On Circuit Breaker, 600 V, 3 Pole, 3 phase

OK Sales Inc | Burlington, NC
Seller: OK Sales Inc
Location: Burlington, NC
Mfr: Square D
Model: LAP36300MB
Square D LAP36300MB Bolt-On Circuit Breaker 300A 600V 3P 3PH LAP 300 AMP 3 Phase, Condition Notes: With Bus Bar, Used working condition. Removed from working service environment. Industrial surplus., Most items ship same day or next day of payment received from North Carolina., UPS Next Day Air orders will ship same ...more

300 Amps, Square D, LAP36300, #1248275

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LAP36300
Square D Circuit Breaker, Molded Case type, Catalog Number LAP36300, 300 amp frame current, 600 volts.

300 Amps, Square D #LAP36300MB, Circuit Breaker, 3-Pole, 600 Volts, Bolt-On

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LAP36300MB, PART NUMBER: LAP36300MB, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: Bolt On, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LAP36300MB, 3 Pole, 300 Amp, 600 Vac, Circuit Breaker.

300 Amps, Square D #LAP36300MT, Circuit Breaker, 3-Pole, 600 Volts, Bolt-On

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LAP36300MT, PART NUMBER: LAP36300MT, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: Bolt On, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, SQUARE D LAP36300MT CIRCUIT BREAKER 300AMP 600VAC 3POLE.

300 Amps, Square D #LC36300, I-Line Circuit Breaker, 3-Pole, 600 Volts

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: ILINE CIRCUIT BREAKER
Square D LC36300 I-Line Circuit Breaker 300A 3P 600V 3PH LC 300 Amp 3 Pole, PART NUMBER: LC36300, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CONDITION: Used, PHASES: 3, POLES: 3, VOLTAGE: 600 Volt, MAIN BREAKER CATALOG NUMBER: LC, MAXIMUM AMPERAGE: 300 Amp, Square D LC36300 I-Line Circuit Breaker 300A 3P 600V 3PH LC ...more

300 Amps, Square D, LH26300AC, #1406895

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LH26300AC

300 Amps, Square D #LH36300, I-Line Circuit Breaker, 3-Pole, 600 Volts

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: ILINE CIRCUIT BREAKER
Square D LH36300, PART NUMBER: LH36300, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: I-Line Style Plug-In, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LH36300 Circuit Breaker 300A 3P 600V 3PH LH I-Line.

300 Amps, Square D, LH36300, #1338160

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LH36300
Square D Circuit Breaker, Molded Case type, Catalog Number LHP36300, 300 amp frame current, 600 volts.

300 Amps, Square D, LHL26300, #1175606

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LHL26300

300 Amps, Square D, LHL36300, #1336668

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LHL36300

300 Amps, Square D #LHL363001027, Circuit Breaker, 3-Pole, 600 Volts

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LHL363001027 Circuit Breaker 300A 600V 3P, PART NUMBER: LHL363001027, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LHL363001027 Circuit Breaker 300A 3P 600V 3PH, Item pictured will be the exact item you receive unless multiple quantities are listed., Please ...more

300 Amps, Square D, LHP36300, #1338736

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LHP36300
Square D Circuit Breaker, Molded Case type, Catalog Number LHP36300, 300 amp frame current, 600 volts.

300 Amps, Square D #LI36300, I-Line Circuit Breaker, 3-Pole, 600 Volts

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: ILINE CIRCUIT BREAKER
Square D LI36300 I-Line Circuit Breaker 300A 3P 600V 3PH LI 300 Amp 3 Pole, PART NUMBER: LI36300, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: I-Line Style Plug-In, CONDITION: Used, PHASES: 3, POLES: 3, VOLTAGE: 600 Volt, MAIN BREAKER CATALOG NUMBER: LI-36300, MAXIMUM AMPERAGE: 300 Amp, Square D ...more

300 Amps, Square D, LIL363001212, 600 Volts, #1167683

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LIL363001212
Square D Circuit Breaker, Molded Case type, Catalog Number LIL363001212, 300 amp frame current, 600 volts.

300 Amps, Square D, LX36300, #1318895

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LX36300
Square D Circuit Breaker, Molded Case type, Catalog Number LX36300, 300 amp frame current, 600 volts.

300 Amps, Square D, LX36400, I-line circuit breaker

Industrial Control & Supply | Santa Fe Springs, CA
Seller: Industrial Control & Supply
Location: Santa Fe Springs, CA
Mfr: Square D
Model: LX36400

300 Amps, Square D, MAL36300, 600 Volts, #1031831

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: MAL36300
Square D Circuit Breaker, Molded Case type, Catalog Number MAL36300, 300 amp frame current, 600 volts.

300 Amps, Square D, MAL36300, 600 Volts

Industrial Control & Supply | Santa Fe Springs, CA
Seller: Industrial Control & Supply
Location: Santa Fe Springs, CA
Mfr: Square D
Model: MAL36300

300 Amps, Square D #MEF436LSIG, Circuit Breaker, 3-Pole, 600 Volts

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D MEF436LSIG Circuit Breaker 300A 3P 600V Solid State Trip Micrologic, PART NUMBER: MEF436LSIG, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CONDITION: Used, PHASES: 3, POLES: 3, VOLTAGE: 600 Volt, MAIN BREAKER CATALOG NUMBER: MEF436, MAXIMUM AMPERAGE: 300 Amp, Square D MEF436LSIG Circuit Breaker 300A 3P 600V ...more

300 Amps, Square D, MGA36300, #1405970

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: MGA36300

300 Amps, Square D, MGA36300, 3 Phase, 35kA @ 480V AIC, 600 Volts

Quality Switchgear Inc | Valley View, TX
Seller: Quality Switchgear Inc
Location: Valley View, TX
Mfr: Square D
Model: MGA36300
Square D MGA36300 Molded Case Circuit Breaker. Family Powerpact; Type MGA; 600 Voltage; 3 Pole; 3 Phase; 300 Amp; 35kA@480V AIC; I-Line Style Plug-In Mounting.

300 Amps, Square D, MH36300, 600 Volts, #1077386

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: MH36300
Square D Circuit Breaker, Molded Case type, Catalog Number MH36300, 300 amp frame current, 600 volts.

300 Amps, Square D #MJA36300, I-Line circuit breaker, 600 Volts, 3 Pole, 25 KA

Travel Safe | Arlington, TX
Seller: Travel Safe
Location: Arlington, TX
Mfr: Square D
Model: ILINE CIRCUIT BREAKER
ELECTRICAL, EQUIPMENT, 1-YEAR, WARRANTY, NATIONWIDE, SHIPPING, EQUIPMENT, EXPERTISE, MJA36300 300 Amp Square D 600V 3P 25kA I-Line Circuit Breaker, 300 Amp 600V 3 Pole 25 kA I-Line MJA36300, ITEM, Manufacturer, Square D, Model / Catalog Number, MJA36300, Amperage, 300 Amp, Poles, 3 Pole, Voltage, 600V, Interrupting ...more

300 Amps, Square D, MJA36300, #1402038

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: MJA36300

300 Amps, Square D, MJL36300-LW, MJL circuit breaker LW suffix = control tap terminals

Industrial Control & Supply | Santa Fe Springs, CA
Seller: Industrial Control & Supply
Location: Santa Fe Springs, CA
Mfr: Square D
Model: MJL36300LW

300 Amps, Square D Micrologic, Circuit Breaker, 3-Pole, 600 Volts, LSIG

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D MXF36300G Circuit Breaker 300A 3P 600V MXF 300 Amp Ground Fault LSIG, PART NUMBER: MXF36300G, AMPERAGE: 300 Amp, MANUFACTURER: Square D, CONDITION: Used, MAIN BREAKER CATALOG NUMBER: MXF36300, MAXIMUM AMPERAGE: 300 Amp, PART NUMBER: Micrologic, PHASES: 3, POLES: 3, VOLTAGE: 600 Volt, Square D MXF36300G ...more

350 Amps, Square D #LA36350, I-Line Circuit Breaker, 3-Pole, 600 Volts (2 available)

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: ILINE CIRCUIT BREAKER
Square D LA36350, PART NUMBER: LA36350, AMPERAGE: 350 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: I-Line Style Plug-In, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, SQD LA36350 I-Line Circuit Breaker 350A 3P 600V 3PH.

350 Amps, Square D, LA36350, #1406925

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LA36350

350 Amps, Square D #LAL36350, Circuit Breaker, 3-Pole, 600 Volts, Shunt Trip, Bolt-On

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LAL36350, PART NUMBER: LAL36350, AMPERAGE: 350 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: Bolt On, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LAL36350 Circuit Breaker LA11021 120V Shunt Trip.

350 Amps, Square D, LAL36350, #1267169

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LAL36350
Square D Circuit Breaker, Molded Case type, Catalog Number LAL36350, 350 amp frame current, 600 volts.

350 Amps, Square D, LAL36350, shunt trip, mag.trip adjustment

Row Electrical Equipment | Toledo, OH
Seller: Row Electrical Equipment
Location: Toledo, OH
Mfr: Square D
Model: LAL36350

350 Amps, Square D, LAL363508041, Molded Case Circuit Breaker, 600 VAC/250 VDC, 3-pole

Powerhouse Systems Llc | Niota, TN
Seller: Powerhouse Systems Llc
Location: Niota, TN
Mfr: Square D
Model: LAL363508041
Square D LAL363508041 Circuit Breaker – 350A – 3 Pole – LAL Series, Square D LAL363508041 molded case circuit breaker available, removed from an active facility and suitable for commercial or industrial power distribution applications., Manufacturer: Square D / Schneider Electric, Model: ...more

350 Amps, Square D #LAL36350MB, Circuit Breaker, 3-Pole, 600 Volts, Bolt-On

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LAL36350MB, PART NUMBER: LAL36350MB, AMPERAGE: 350 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: Bolt On, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LAL36350MB 3 pole 350 Amp 600 volt.

350 Amps, Square D, LAL36350MB, Feed-Thru Circuit Breaker, 600V 3P 3PH

OK Sales Inc | Burlington, NC
Seller: OK Sales Inc
Location: Burlington, NC
Mfr: Square D
Model: LAL36350MB
Square D LAL36350MB Feed-Thru Circuit Breaker 350A 600VAC 250VDC 3P 3PH Type LAL 350 Amp 3 Pole., Condition Notes: Take-out., Used working condition. Removed from working service environment. Industrial surplus. Item pictured is the exact item you will receive, unless multiple quantities listed., Most items ship same ...more

350 Amps, Square D, LAP36350, 600 V molded case circuit breaker

Industrial Control & Supply | Santa Fe Springs, CA
Seller: Industrial Control & Supply
Location: Santa Fe Springs, CA
Mfr: Square D
Model: LAP36350

350 Amps, Square D #LAP36350MB1021, Circuit Breaker, 3-Pole, 600 Volts, Bolt-On

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LAP36350MB1021, PART NUMBER: LAP36350MB1021, AMPERAGE: 350 Amp, MANUFACTURER: Square D, CIRCUIT BREAKER MOUNT: Bolt On, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LAP36350MB1021 350A 600V 3P Lug to Lug Circuit Breaker.

350 Amps, Square D, LAP36350MB1021, #1331769

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LAP36350MB1021
Square D Circuit Breaker, Molded Case type, Catalog Number LAP36350MB1021, 350 amp frame current, 600 volts.

350 Amps, Square D, LC26350AC, New out of Box, #036653

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LC26350AC
Square D Circuit Breaker, Molded Case type, Catalog Number LC26350AC, 350 amp frame current, 600 volts.

350 Amps, Square D #LC36350, Circuit Breaker, 3-Pole, 600 Volts

Brilliant Equipment Services | Burlington, NC
Seller: Brilliant Equipment Services
Location: Burlington, NC
Mfr: Square D
Model: CIRCUIT BREAKER
Square D LC36350 Circuit Breaker 350A 600V 3P, PART NUMBER: LC36350, AMPERAGE: 350 Amp, MANUFACTURER: Square D, CONDITION: Used, POLES: 3, VOLTAGE: 600 Volt, Square D LC36350 Circuit Breaker 350A 3P 600V 3PH LC 350 Amp 3 Pole, Item pictured will be the exact item you receive unless multiple quantities are listed. ...more

350 Amps, Square D, LC36350, #1304693

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LC36350
Square D Circuit Breaker, Molded Case type, Catalog Number LC36350, 350 amp frame current, 600 volts.

350 Amps, Square D, LC36350, 600 Volts, #956174

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LC36350
Square D Circuit Breaker, Molded Case type, Catalog Number LC36350, 350 amp frame current, 600 volts.

350 Amps, Square D, LCL36350, 600 Volts, #1085706

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LCL36350
Square D Circuit Breaker, Molded Case type, Catalog Number LCL36350, 350 amp frame current, 600 volts.

350 Amps, Square D, LCL363501287, 600 Volts, #1162976

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LCL363501287
Square D Circuit Breaker, Molded Case type, Catalog Number LCL363501287, 350 amp frame current, 600 volts.

350 Amps, Square D, LCP36350, 600 Volts, #1085679

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LCP36350
Square D Circuit Breaker, Molded Case type, Catalog Number LCP36350, 350 amp frame current, 600 volts.

350 Amps, Square D, LH36350, #1394374

RESA Power Solutions | Cerritos, CA
Seller: RESA Power Solutions
Location: Cerritos, CA
Mfr: Square D
Model: LH36350