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Square D Molded Case Circuit Breakers

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Square D by Schneider Electric has a wide range of Molded Case Circuit Breakers that are designed with thermal magnetic protection. Thermal trip element circuit breakers protect a circuit against a small overload that continues for a long time. The larger the overload, the faster the circuit breaker will trip. The thermal element will also protect against temperature increases. Magnetic circuit breakers will trip instantly when the preset current is present. Thermal magnetic circuit breakers contain both types of protection in a single unit. 

LA and LH Molded Case Circuit Breakers provide thermal magnetic protection from 125 to 400 Amps as part of the Square D portfolio of molded case circuit breakers. They are available in 2 and 3 pole design with unit-mount, I-line or rear-connect constructions. LH molded case circuit breakers are used in industrial enclosures, switchboards, panelboards, busway plug-in units, combination starters and motor control centers.

Q4 Molded Case Circuit Breakers provide thermal magnetic protection from 250 to 400 Amps up to 240 Vac with interrupting ratings of 25 kA at 240 Vac. They are available in 2 and 3 pole design with unit-mount and I-line constructions.

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Schneider Electric LAL363501212 LA Frame MOLDED CASE CIRCUIT BREAKER
Schneider Electric LAL363501212 LA Frame MOLDED CASE CIRCUIT BREAKER
$15385.44
Schneider LAL363501212 Compliant, EU RoHS Declaration China RoHS declaration, Product out of China RoHS scope. Substance declaration for your information. Halogen free plastic parts product 00935 - LAL/LHL BRKR, SW, MAG-GARD DE2 15 lb(US (6.80 kg No MX Green Premium product Yes Yes Product Environmental Profile Yes 18 months 1 LH Q4 Molded Case Circuit Breakers LA/LH/Q4 MCCB
Schneider Electric LA11128 LA Frame CIRCUIT BREAKER UNDERVOLTAGE TRIP 48V DC
Schneider Electric LA11133 LA Frame CIRCUIT BREAKER UNDERVOLTAGE TRIP 12V DC
Schneider Electric LA11130 LA Frame CIRCUIT BREAKER UNDERVOLTAGE TRIP 250V DC
Schneider Electric LHL3640036M LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LHL3640035M LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL36400MB1021 FA/LA LA Frame CIRCUIT BREAKER MOTOR CIRCUIT CIRCUIT BREAKER, 600V, 400A, 3P, SHUNT TRIP, SHORT HANDLE
Schneider Electric LAL364008002 LA Frame CIRCUIT BREAKER MOTOR CIRCUIT CIRCUIT BREAKER 600V 400A
Schneider Electric LAL3640036MV1052 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640036M8002 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640036M1121 LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P, UNDERVOLTAGE RELEASE
Schneider Electric LAL3640036M1121 LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P, UNDERVOLTAGE RELEASE
$25532.00
LAL MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P, UNDERVOLTAGE RELEASE
Schneider Electric LAL3640036M1052 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640036M1021 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640036M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P
Schneider Electric LAL3640035M1212 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640035M1021 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640035M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P
Schneider Electric LAL3640033M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P
Schneider Electric LAL3640032MV LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640032M1212 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640032M1155 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640032M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P
Schneider Electric LAL3640031M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC/250VDC, 400A, 3P
Schneider Electric LAL3640030M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC, 400A, 3P
Schneider Electric LAL3640028M1021 LA Frame MOTOR CIRCUIT PROTECTOR 600V 400A
Schneider Electric LAL3640028M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC, 400A, 3P
Schneider Electric LAL3640022M LAL LA Frame MOTOR CIRCUIT PROTECTOR, 600VAC, 400A, 3P
Schneider Electric LAL3630026M6335 LA Frame MOTOR CIRCUIT PROTECTOR 600V 300A
Schneider Electric LAL34225MC1380 LA Frame MOLDED CASE CIRCUIT BREAKER 480V 225A
Schneider Electric LAL34225MC1212 LA Frame MOLDED CASE CIRCUIT BREAKER 480V 225A
Schneider Electric LAL34225MC1021 LA Frame MOLDED CASE CIRCUIT BREAKER 480V 225A
Schneider Electric LHF36200 LH LH Frame MOLDED CASE CIRCUIT BREAKER 600V, 200A, 3P
Schneider Electric Q4L3400 Q4L MOLDED CASE CIRCUIT BREAKER, 240VAC, 400A, 3P
Schneider Electric Q4L3400 Q4L MOLDED CASE CIRCUIT BREAKER, 240VAC, 400A, 3P
$5363.40
Q4L MOLDED CASE CIRCUIT BREAKER, 240VAC, 400A, 3P
Schneider Electric Q4L3350 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 350A, 3P
Schneider Electric Q4L3350 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 350A, 3P
$5363.40
QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 350A, 3P
Schneider Electric Q4L3300 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 300A, 3P
Schneider Electric Q4L3300 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 300A, 3P
$5363.40
QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 300A, 3P
Schneider Electric Q4L3250 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 250A, 3P
Schneider Electric Q4L3250 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 250A, 3P
$5363.40
QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 250A, 3P
Schneider Electric Q4L2400 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 400A, 2P
Schneider Electric Q4L2400 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 400A, 2P
$4439.40
QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 400A, 2P
Schneider Electric Q4L2350 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 350A, 2P
Schneider Electric Q4L2350 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 350A, 2P
$4439.40
QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 350A, 2P
Schneider Electric Q4L2300 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 300A, 2P
Schneider Electric Q4L2300 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 300A, 2P
$4439.40
QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 300A, 2P
Schneider Electric Q4L2250 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 250A, 2P
Schneider Electric Q4L2250 QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 250A, 2P
$4439.40
QAL MOLDED CASE CIRCUIT BREAKER, 240VAC, 250A, 2P
Schneider Electric Q432400 Q-FRAME MOLDED CASE CIRCUIT BREAKER, 240V, 400A, 3P
Schneider Electric Q432400 Q-FRAME MOLDED CASE CIRCUIT BREAKER, 240V, 400A, 3P
$6038.20
Q-FRAME MOLDED CASE CIRCUIT BREAKER, 240V, 400A, 3P
Schneider Electric Q432300 Q-FRAME MOLDED CASE CIRCUIT BREAKER, 240V, 300A, 3P
Schneider Electric Q432300 Q-FRAME MOLDED CASE CIRCUIT BREAKER, 240V, 300A, 3P
$6038.20
Q-FRAME MOLDED CASE CIRCUIT BREAKER, 240V, 300A, 3P
Schneider Electric LHP36300 LH Frame MOLDED CASE CIRCUIT BREAKER 600V 300A
Schneider Electric LHP36200 LH Frame MOLDED CASE CIRCUIT BREAKER 600V 200A
Schneider Electric LHL36400MB LH LH Frame MOLDED CASE CIRCUIT BREAKER, 600VAC/250VDC, 400A, 3P, SHORT HANDLE
Schneider Electric LHL36400MB LH LH Frame MOLDED CASE CIRCUIT BREAKER, 600VAC/250VDC, 400A, 3P, SHORT HANDLE
$10637.20
LH MOLDED CASE CIRCUIT BREAKER, 600VAC/250VDC, 400A, 3P, SHORT HANDLE
Schneider Electric LHL364001021 LH Frame MOLDED CASE CIRCUIT BREAKER 600V 400A
Schneider Electric LHL36400 LHL LH LH Frame MOLDED CASE CIRCUIT BREAKER, 600VAC/250VDC, 400A, 3P
Schneider Electric LHL363501021 LH Frame MOLDED CASE CIRCUIT BREAKER 600V 350A

 

There are two different types of technologies that are commonly used in circuit 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 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.

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