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Molded Case Circuit Breakers (P Frame)

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Square D by Schneider Electric’s PowerPact Multistandard circuit breakers are equipped with dual-break rotating contacts that reduce the amount of peak current during a short-circuit fault. They feature an over-center toggle mechanism providing quick-make, quick-break operation. Internal cross-bars provide common opening and closing of all poles with a single handle. The circuit breaker handle can assume any of three positions, ON, tripped or OFF. The center tripped position provides positive visual indication that the circuit breaker has tripped.

PowerPact P-frame circuit breakers are available in 2, 3 or 4 pole design and from 100 to 1200 A. They are available in either a basic electronic trip system or Micrologic trip system. Electronic trip units simulate the function of a thermal magnetic trip unit, but provides precise tripping and is not sensitive to temperature changes. Micrologic electronic trip units provide adjustable protection settings for greater system flexibility. They allow users to monitor both power and energy. Through direct access to information and networking using open protocols, PowerPact circuit breakers with Micrologic trip units let users optimize the management of their electrical installations. Using Micrologic trip unit sensors and intelligence, PowerPact P-frame circuit breakers provide access to measurements of all the main electrical parameters on the built-in screen, on a dedicated front display module or through the communication network. Integration of measurement functions provide users with operating assistance functions including, time-stamped event tables and histories, alarms tripped by user-selected measurement values and maintenance indicators.

Schneider Electric PLA34120U44A MOLDED CASE CIRCUIT BREAKER 480V 1200A

$30793.17 $41124.00

Schneider PLA34120U44A Circuit breaker 1200 A 125 kA 240 V AC, 100 kA 480 V AC 80 % 3P I-Line A Busbar UL Listed, CSA, IEC PowerPact P L Electronic, ammeter, Micrologic 6.0 A, LSIG 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 480 V AC I-Line connection line, Lugs loa

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Schneider Electric PLA34120 MOLDED CASE CIRCUIT BREAKER 480V 1200A

$25170.53 $33615.00

Schneider PLA34120 Circuit breaker 1200 A 125 kA 240 V AC, 100 kA 480 V AC 80 % 3P I-Line Busbar CSA, IEC, UL Listed PowerPact P L Electronic, basic, ET 1.0I, LI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 480 V AC I-Line connection line, Lugs load AWG 3/0-500 kcmil

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Schneider Electric PLA34080 MOLDED CASE CIRCUIT BREAKER 480V 800A

$18374.13 $24538.50

Schneider PLA34080 Circuit breaker 800 A 125 kA 240 V AC, 100 kA 480 V AC 80 % 3P I-Line Busbar CSA, UL Listed, IEC PowerPact P L Electronic, basic, ET 1.0I, LI 12.86 in (326.64 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 480 V AC I-Line connection line, Lugs load AWG 3/0-500 kcmil

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Schneider Electric PJA36120YP MOLDED CASE CIRCUIT BREAKER 600V 1200A

$23956.35 $31993.50

Schneider PJA36120YP Circuit breaker 1200 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line Busbar CSA, IEC, UL Listed PowerPact P J Electronic, basic, ET 1.0I, LI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection line, Lugs load

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Schneider Electric PJA36120U44A MOLDED CASE CIRCUIT BREAKER 600V 1200A

$29439.75 $39316.50

Schneider PJA36120U44A Circuit breaker 1200 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line A Busbar CSA, UL Listed, IEC PowerPact P J Electronic, ammeter, Micrologic 6.0 A, LSIG 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection

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Schneider Electric PJA36120U41A MOLDED CASE CIRCUIT BREAKER 600V 1200A

$25659.12 $34267.50

Schneider PJA36120U41A Circuit breaker 1200 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line A Busbar IEC, UL Listed, CSA PowerPact P J Electronic, ammeter, Micrologic 3.0 A, LI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection l

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Schneider Electric PJA36120U33A MOLDED CASE CIRCUIT BREAKER 600V 1200A

$25085.17 $33501.00

Schneider PJA36120U33A Circuit breaker 1200 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line A Busbar IEC, CSA, UL Listed PowerPact P J Electronic, standard, Micrologic 5.0, LSI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection l

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Schneider Electric PJA36120U31A MOLDED CASE CIRCUIT BREAKER 600V 1200A

$24704.41 $32992.50

Schneider PJA36120U31A Circuit breaker 1200 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line A Busbar UL Listed, CSA, IEC PowerPact P J Electronic, standard, Micrologic 3.0, LI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection li

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Schneider Electric PJA36120 MOLDED CASE CIRCUIT BREAKER 600V 1200A

$23819.33 $31810.50

Schneider PJA36120 Circuit breaker 1200 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line Busbar IEC, UL Listed, CSA PowerPact P J Electronic, basic, ET 1.0I, LI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection line, Lugs load AW

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Schneider Electric PJA36100U44A MOLDED CASE CIRCUIT BREAKER 600V 1000A

$29439.75 $39316.50

Schneider PJA36100U44A Circuit breaker 1000 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line A Busbar UL Listed, IEC, CSA PowerPact P J Electronic, ammeter, Micrologic 6.0 A, LSIG 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection

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Schneider Electric PJA36100U41A MOLDED CASE CIRCUIT BREAKER 600V 1000A

$25659.12 $34267.50

Schneider PJA36100U41A Circuit breaker 1000 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line A Busbar UL Listed, CSA, IEC PowerPact P J Electronic, ammeter, Micrologic 3.0 A, LI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection l

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Schneider Electric PJA36100U33A MOLDED CASE CIRCUIT BREAKER 600V 1000A

$25085.17 $33501.00

Schneider PJA36100U33A Circuit breaker 1000 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line A Busbar CSA, UL Listed, IEC PowerPact P J Electronic, standard, Micrologic 5.0, LSI 16.16 in (410.46 mm 8.27 in (210.06 mm 8.05 in (204.47 mm 600 V AC I-Line connection l

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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.

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