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Molded Case Circuit Breakers (M Frame)

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 M-frame circuit breakers are designed to protect electrical systems from damage caused by short-circuits and overloads. They are equipped with an electronic trip unit which simulates the function of a thermal magnetic trip unit, but provides precise tripping and is not sensitive to temperature changes. They are available in an adjustable amperage trip unit capable of 300 to 800 A settings, or a fixed amperage device rated at 400 or 600 A. PowerPact M-frame circuit breakers come in 2 and 3 pole designs with unit-mount and I-line constructions.

Products

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$18945.00
Schneider MJA36800 Circuit breaker 800 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M J AL800M23K Electronic, basic, ET 1.0, LI 1600-8000 A 14.85 in (377.19 mm 8.96 in (227.58 mm 8.07 in (204.98 mm 600 V AC I-Line connecti
$18945.00
Schneider MJA36700 Circuit breaker 700 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M J AL800M23K Electronic, basic, ET 1.0, LI 1400-7000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection lin
$14893.50
Schneider MJA36600 Circuit breaker 600 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M J AL800M23K Electronic, basic, ET 1.0, LI 1200-6000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection lin
$14893.50
Schneider MJA36500 Circuit breaker 500 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M J AL800M23K Electronic, basic, ET 1.0, LI 1000-5000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection lin
$14893.50
Schneider MJA36400 Circuit breaker 400 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M J AL800M23K Electronic, basic, ET 1.0, LI 800-4000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection line
$15912.00
Schneider MGA36800 Circuit breaker 800 A 65 kA 240 V AC, 35 kA 480 V AC, 18 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M G AL800M23K Electronic, basic, ET 1.0, LI 1600-8000 A 14.85 in (377.19 mm 8.96 in (227.58 mm 8.07 in (204.98 mm 600 V AC I-Line connectio
$15912.00
Schneider MGA36700 Circuit breaker 700 A 65 kA 240 V AC, 35 kA 480 V AC, 18 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M G AL800M23K Electronic, basic, ET 1.0, LI 1400-7000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection line
$12252.00
Schneider MGA36500 Circuit breaker 500 A 65 kA 240 V AC, 35 kA 480 V AC, 18 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M G AL800M23K Electronic, basic, ET 1.0, LI 1000-5000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection line
$12252.00
Schneider MGA36300 Circuit breaker 300 A 65 kA 240 V AC, 35 kA 480 V AC, 18 kA 600 V AC 80 % 3P I-Line M-frame CSA, IEC, UL Listed PowerPact M G AL800M23K Electronic, basic, ET 1.0, LI 600-3000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection line,
$18569.25
Schneider MJA264002 Circuit breaker 400 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 2P I-Line M-frame CSA, IEC, UL Listed PowerPact M J AL800M23K Electronic, basic, ET 1.0, LI 800-4000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection lin
$18569.25
Schneider MJA263002 Circuit breaker 300 A 100 kA 240 V AC, 65 kA 480 V AC, 25 kA 600 V AC 80 % 2P I-Line M-frame CSA, IEC, UL Listed PowerPact M J AL800M23K Electronic, basic, ET 1.0, LI 600-3000 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection lin
$14924.25
Schneider MGA264502 Circuit breaker 450 A 65 kA 240 V AC, 35 kA 480 V AC, 18 kA 600 V AC 80 % 2P I-Line M-frame CSA, IEC, UL Listed PowerPact M G AL800M23K Electronic, basic, ET 1.0, LI 900-4500 A 12.86 in (326.6 mm 0.32 in (8.06 mm 8.27 in (210 mm 600 V AC I-Line connection line