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Molded Case Circuit Breakers (MCCB)

Molded Case Circuit Breakers (MCCBs) are the work‑horses that protect medium‑ to high‑power circuits from overloads and short‑circuits. Our Schneider ComPact and GoPact ranges cover 16 A to 630 A with breaking capacities up to 70 kA, giving South‑African installers the head‑room demanded by SANS 10142 and IEC 60947‑2.

Whether you’re upgrading a panel in a manufacturing plant or speccing a new commercial DB, you can choose between thermal‑magnetic or electronic trip units, fixed or adjustable settings, and 1‑ to 4‑pole formats. Every MCCB on this page carries Schneider’s proven track record for reliability, plus digital features such as DIN‑rail energy metering on selected ComPact NSX models.

Need help sizing the breaker? Check the kA rating against your prospective fault level, match the trip curve to motor‑start currents, and allow at least 20 % head‑room on continuous load. Scroll down to shop the full Schneider MCCB line‑up.

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R
R

automatic auxiliary connector, fixed part, ComPact NSX 100 to NSX630, for plug-in base, 1 to 9 wires

Schneider Electric
R 753.57 - R 753.57
R 753.57
R 753.57 - R 753.57
R 753.57
518 in stock

This is the fixed part of an automatic connector for Compact NSX 100 to 630 auxiliaries connection. It is adapted for plug-in base or withdrawable ...

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R 753.57 - R 753.57
R 753.57
R 753.57 - R 753.57
R 753.57

manual auxiliary connector, fixed and moving part, ComPact NSX 100 to NSX630, withdrawable circuit breakers, 1 to 9 wires

Schneider Electric
R 1,053.10 - R 1,053.10
R 1,053.10
R 1,053.10 - R 1,053.10
R 1,053.10
96 in stock

This is a manual connector for Compact NSX 100 to 630 auxiliaries connection. It is adapted for withdrawable circuit breakers. It is made of a fixe...

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R 1,053.10 - R 1,053.10
R 1,053.10
R 1,053.10 - R 1,053.10
R 1,053.10

safety trip interlock for ComPact NSX 100/160/250 plug-in kit

Schneider Electric
R 351.06 - R 351.06
R 351.06
R 351.06 - R 351.06
R 351.06
29 in stock

This is a safety trip interlock device for 2,3 or 4 poles Compact NSX 100/160/250. It is part of the plug-in kit for Compact NSX circuit breakers. ...

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R 351.06 - R 351.06
R 351.06
R 351.06 - R 351.06
R 351.06

power connections, ComPact NSX100/160/250 plug-in kit, set of 2 parts

Schneider Electric
R 425.94 - R 425.94
R 425.94
R 425.94 - R 425.94
R 425.94
514 in stock

It is a power connection for Compact NSX100/160/250 3P plug-in kit. A plug-in configuration is made by adding a plug-in kit to a fixed device. This...

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R 425.94 - R 425.94
R 425.94
R 425.94 - R 425.94
R 425.94

plug in base, ComPact NSX 100/160/250, front/rear connected, 3 poles

Schneider Electric
R 3,071.85 - R 3,071.85
R 3,071.85
R 3,071.85 - R 3,071.85
R 3,071.85
224 in stock

This is a plug-in base for 3 poles Compact NSX 100/160/250 circuit breakers. The plug-in base is part of a complete plug-in kit. A plug-in configur...

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R 3,071.85 - R 3,071.85
R 3,071.85
R 3,071.85 - R 3,071.85
R 3,071.85

steel bare cable connectors, ComPact NSX, EasyPact CVS, for 1 cable 1.5 to 95 mm², 160 A, set of 4 parts

Schneider Electric
R 449.33 - R 449.33
R 449.33
R 449.33 - R 449.33
R 449.33
244 in stock

These accessories are steel bare cable connectors for Compact NSX 100/160 and EasyPact CVS 100/160. These connectors can receive 1 copper or alumin...

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R 449.33 - R 449.33
R 449.33
R 449.33 - R 449.33
R 449.33

steel bare cable connectors, ComPact NSX, EasyPact CVS, for 1 cable 1.5 to 95 mm², 160 A, set of 3 parts

Schneider Electric
R 400.98 - R 400.98
R 400.98
R 400.98 - R 400.98
R 400.98
73 in stock

These accessories are steel bare cable connectors for Compact NSX 100/160 and EasyPact CVS 100/160. These connectors can receive 1 copper or alumin...

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R 400.98 - R 400.98
R 400.98
R 400.98 - R 400.98
R 400.98

long rear connections, ComPact NSX, EasyPact CVS, 250 A, set of 2 parts

Schneider Electric
R 1,115.50 - R 1,115.50
R 1,115.50
R 1,115.50 - R 1,115.50
R 1,115.50
1072 in stock

These accessories are short rear connections for Compact NSX 100/160/250 and EasyPact CVS 100/160/250. The rear connection is simply fitted to the ...

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R 1,115.50 - R 1,115.50
R 1,115.50
R 1,115.50 - R 1,115.50
R 1,115.50

short rear connections, ComPact NSX, EasyPact CVS, 250 A, set of 2 parts

Schneider Electric
R 881.49 - R 881.49
R 881.49
R 881.49 - R 881.49
R 881.49
868 in stock

These accessories are short rear connections for Compact NSX 100/160/250 and EasyPact CVS 100/160/250. The rear connection is simply fitted to the ...

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R 881.49 - R 881.49
R 881.49
R 881.49 - R 881.49
R 881.49

standard auxiliary contact, ComPact NSXm, circuit breaker status OF/SD, 1 changeover contact type

Square D
R 936.77 - R 936.77
R 936.77
R 936.77 - R 936.77
R 936.77
84 in stock

It is a single standard auxiliary contact that provides two remote information of the circuit breaker status. It is used on Compact NSXm and PowerP...

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R 936.77 - R 936.77
R 936.77
R 936.77 - R 936.77
R 936.77

extended rotary handle, ComPacT NSXm, black handle, shaft length 200 to 600 mm, IP54

Schneider Electric
R 2,886.07 - R 2,886.07
R 2,886.07
R 2,886.07 - R 2,886.07
R 2,886.07
27 in stock

This extended rotary handle is a control accessory for ComPacT NSXm and PowerPact B devices. The circuit breaker installed in a switchboard with th...

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R 2,886.07 - R 2,886.07
R 2,886.07
R 2,886.07 - R 2,886.07
R 2,886.07

standard MX shunt release, ComPact NSXm, rated voltage 250 VDC, 220/240 VAC 50 Hz, 208/240 VAC 60Hz, 277 VAC 60 Hz

Square D
R 2,041.72 - R 2,041.72
R 2,041.72
R 2,041.72 - R 2,041.72
R 2,041.72
Only 2 left!

This standard MX shunt trip is used on Compact NSXm and PowerPact B devices. This auxiliary is used for emergency off or failsafe remote opening ap...

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R 2,041.72 - R 2,041.72
R 2,041.72
R 2,041.72 - R 2,041.72
R 2,041.72

Circuit breaker ComPacT NSX630HB1, 75kA at 690VAC, MicroLogic 2.3 trip unit, 630A, 3 poles 3d

Schneider Electric
R 32,811.49 - R 32,811.49
R 32,811.49
R 32,811.49 - R 32,811.49
R 32,811.49
24 in stock

This ComPacT NSX630HB1 is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all ...

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R 32,811.49 - R 32,811.49
R 32,811.49
R 32,811.49 - R 32,811.49
R 32,811.49

circuit breaker basic frame, ComPacT NSX630N, 50 kA at 415 VAC 50/60 Hz, 630 A, without trip unit, 4 poles

Schneider Electric
R 21,210.26 - R 21,210.26
R 21,210.26
R 21,210.26 - R 21,210.26
R 21,210.26
24 in stock

This is a 4 poles basic frame for ComPacT NSX630N. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 21,210.26 - R 21,210.26
R 21,210.26
R 21,210.26 - R 21,210.26
R 21,210.26

circuit breaker basic frame, ComPacT NSX630N, 50 kA at 415 VAC 50/60 Hz, 630 A, without trip unit, 3 poles

Schneider Electric
R 15,907.71 - R 15,907.71
R 15,907.71
R 15,907.71 - R 15,907.71
R 15,907.71
525 in stock

This is a 3 poles basic frame for ComPacT NSX630N. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 15,907.71 - R 15,907.71
R 15,907.71
R 15,907.71 - R 15,907.71
R 15,907.71

circuit breaker basic frame, ComPacT NSX630L, 150 kA at 415 VAC 50/60 Hz, 630 A, without trip unit, 3 poles

Schneider Electric
R 21,173.14 - R 21,173.14
R 21,173.14
R 21,173.14 - R 21,173.14
R 21,173.14
11 in stock

This is a 3 poles basic frame for ComPacT NSX630L. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 21,173.14 - R 21,173.14
R 21,173.14
R 21,173.14 - R 21,173.14
R 21,173.14

circuit breaker basic frame, ComPacT NSX630H, 70 kA at 415 VAC 50/60 Hz, 630 A, without trip unit, 4 poles

Schneider Electric
R 23,331.27 - R 23,331.27
R 23,331.27
R 23,331.27 - R 23,331.27
R 23,331.27
6 in stock

This is a 4 poles basic frame for ComPacT NSX630H. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 23,331.27 - R 23,331.27
R 23,331.27
R 23,331.27 - R 23,331.27
R 23,331.27

circuit breaker basic frame, ComPacT NSX630H, 70 kA at 415 VAC 50/60 Hz, 630 A, without trip unit, 3 poles

Schneider Electric
R 17,498.48 - R 17,498.48
R 17,498.48
R 17,498.48 - R 17,498.48
R 17,498.48
79 in stock

This is a 3 poles basic frame for ComPacT NSX630H. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 17,498.48 - R 17,498.48
R 17,498.48
R 17,498.48 - R 17,498.48
R 17,498.48

circuit breaker basic frame, ComPacT NSX630F, 36 kA at 415 VAC 50/60 Hz, 630 A, without trip unit, 4 poles

Schneider Electric
R 19,282.06 - R 19,282.06
R 19,282.06
R 19,282.06 - R 19,282.06
R 19,282.06
35 in stock

This is a 4 poles basic frame for ComPacT NSX630F. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 19,282.06 - R 19,282.06
R 19,282.06
R 19,282.06 - R 19,282.06
R 19,282.06

circuit breaker basic frame, ComPacT NSX630F, 36 kA at 415 VAC 50/60 Hz, 630 A, without trip unit, 3 poles

Schneider Electric
R 14,461.56 - R 14,461.56
R 14,461.56
R 14,461.56 - R 14,461.56
R 14,461.56
221 in stock

This is a 3 poles basic frame for ComPacT NSX630F. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 14,461.56 - R 14,461.56
R 14,461.56
R 14,461.56 - R 14,461.56
R 14,461.56

trip unit MicroLogic 5.3 E for ComPacT NSX 630 circuit breakers, electronic, rating 630A, 4 poles 4d

Schneider Electric
R 11,850.47 - R 11,850.47
R 11,850.47
R 11,850.47 - R 11,850.47
R 11,850.47
Only 2 left!

This MicroLogic 5.3 E (Energy) is a 4 poles 4d electronic trip unit used on ComPacT NSX 630 circuit breakers. This 630A rating electronic trip unit...

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R 11,850.47 - R 11,850.47
R 11,850.47
R 11,850.47 - R 11,850.47
R 11,850.47

trip unit MicroLogic 2.3 for ComPacT NSX 630 circuit breakers, electronic, rating 630A, 4 poles 4d

Schneider Electric
R 8,977.63 - R 8,977.63
R 8,977.63
R 8,977.63 - R 8,977.63
R 8,977.63
107 in stock

This MicroLogic 2.3 is a 4 poles 4d electronic trip unit used on ComPacT NSX 630 circuit breakers. This 630A rating electronic trip unit is an opti...

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R 8,977.63 - R 8,977.63
R 8,977.63
R 8,977.63 - R 8,977.63
R 8,977.63

trip unit MicroLogic 6.3 E for ComPacT NSX 630 circuit breakers, electronic, rating 630A, 3 poles 3d

Schneider Electric
R 11,243.12 - R 11,243.12
R 11,243.12
R 11,243.12 - R 11,243.12
R 11,243.12
6 in stock

This MicroLogic 6.3 E (Energy) is a 3 poles 3d electronic trip unit used on ComPacT NSX 630 circuit breakers. This 630A rating electronic trip unit...

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R 11,243.12 - R 11,243.12
R 11,243.12
R 11,243.12 - R 11,243.12
R 11,243.12

trip unit MicroLogic 5.3 E for ComPacT NSX 630 circuit breakers, electronic, rating 630A, 3 poles 3d

Schneider Electric
R 8,887.86 - R 8,887.86
R 8,887.86
R 8,887.86 - R 8,887.86
R 8,887.86
304 in stock

This MicroLogic 5.3 E (Energy) is a 3 poles 3d electronic trip unit used on ComPacT NSX 630 circuit breakers. This 630A rating electronic trip unit...

View full details
R 8,887.86 - R 8,887.86
R 8,887.86
R 8,887.86 - R 8,887.86
R 8,887.86