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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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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
Available for backorder

Circuit breaker ComPacT NSX630H, 70kA at 415VAC, MicroLogic 2.3 M trip unit 500A, 3 poles 3d

Schneider Electric
R 23,885.95 - R 23,885.95
R 23,885.95
R 23,885.95 - R 23,885.95
R 23,885.95
Available for backorder

This ComPacT NSX630H is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for motor ...

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R 23,885.95 - R 23,885.95
R 23,885.95
R 23,885.95 - R 23,885.95
R 23,885.95
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX630H, 70kA at 415VAC, MicroLogic 2.3 trip unit 630A, 3 poles 3d

Schneider Electric
R 24,231.72 - R 24,231.72
R 24,231.72
R 24,231.72 - R 24,231.72
R 24,231.72
Available for backorder

This ComPacT NSX630H is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all st...

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R 24,231.72 - R 24,231.72
R 24,231.72
R 24,231.72 - R 24,231.72
R 24,231.72
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX630H, 70kA at 415VAC, MicroLogic 1.3 M trip unit 500A, 3 poles 3d

Schneider Electric
R 21,255.82 - R 21,255.82
R 21,255.82
R 21,255.82 - R 21,255.82
R 21,255.82
Available for backorder

This ComPacT NSX630H is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for motor ...

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R 21,255.82 - R 21,255.82
R 21,255.82
R 21,255.82 - R 21,255.82
R 21,255.82
Available for backorder

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
Available for backorder

Circuit breaker ComPacT NSX600F DC, 36kA at 750 VDC,TM-DC trip unit, 600 A rating, 3 poles

Schneider Electric
R 22,090.92 - R 22,090.92
R 22,090.92
R 22,090.92 - R 22,090.92
R 22,090.92
Available for backorder

ComPacT NSX 600F DC is a complete 3 poles fixed circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for appli...

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R 22,090.92 - R 22,090.92
R 22,090.92
R 22,090.92 - R 22,090.92
R 22,090.92
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX500F DC, 36kA at 750 VDC, TM-DC trip unit, 500 A rating, 3 poles

Schneider Electric
R 17,130.14 - R 17,130.14
R 17,130.14
R 17,130.14 - R 17,130.14
R 17,130.14
Available for backorder

ComPacT NSX 500F DC is a complete 3 poles fixed circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for applic...

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R 17,130.14 - R 17,130.14
R 17,130.14
R 17,130.14 - R 17,130.14
R 17,130.14
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX630F, 36kA at 415VAC, MicroLogic 2.3 M trip unit 500A, 3 poles 3d

Schneider Electric
R 20,848.97 - R 20,848.97
R 20,848.97
R 20,848.97 - R 20,848.97
R 20,848.97
Available for backorder

This ComPacT NSX630F is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for motor ...

View full details
R 20,848.97 - R 20,848.97
R 20,848.97
R 20,848.97 - R 20,848.97
R 20,848.97
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX630F, 36kA at 415VAC, MicroLogic 2.3 trip unit 630A, 3 poles 3d

Schneider Electric
R 21,194.74 - R 21,194.74
R 21,194.74
R 21,194.74 - R 21,194.74
R 21,194.74
Available for backorder

This ComPacT NSX630F is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all st...

View full details
R 21,194.74 - R 21,194.74
R 21,194.74
R 21,194.74 - R 21,194.74
R 21,194.74
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX630F, 36kA at 415VAC, MicroLogic 1.3 M trip unit 500A, 3 poles 3d

Schneider Electric
R 18,218.89 - R 18,218.89
R 18,218.89
R 18,218.89 - R 18,218.89
R 18,218.89
Available for backorder

This ComPacT NSX630F is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for motor ...

View full details
R 18,218.89 - R 18,218.89
R 18,218.89
R 18,218.89 - R 18,218.89
R 18,218.89
Available for backorder

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 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
Available for backorder

Switch disconnector ComPacT NSX400...630NA, DC, 630A rating, 3 poles

Schneider Electric
R 19,509.84 - R 19,509.84
R 19,509.84
R 19,509.84 - R 19,509.84
R 19,509.84
Available for backorder

ComPacT NSX630NA DC is a complete 4 poles switch disconnerctor. It's used to control and isolate electrical distribution circuits. It requires an u...

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R 19,509.84 - R 19,509.84
R 19,509.84
R 19,509.84 - R 19,509.84
R 19,509.84
Available for backorder

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...

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R 8,887.86 - R 8,887.86
R 8,887.86
R 8,887.86 - R 8,887.86
R 8,887.86

trip unit MicroLogic 2.3 for ComPacT NSX 630 circuit breakers, electronic, rating 630A, 3 poles 3d

Schneider Electric
R 6,733.22 - R 6,733.22
R 6,733.22
R 6,733.22 - R 6,733.22
R 6,733.22
221 in stock

This MicroLogic 2.3 is a 3 poles 3d electronic trip unit used on ComPacT NSX 630 circuit breakers. This 630A rating electronic trip unit is an opti...

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R 6,733.22 - R 6,733.22
R 6,733.22
R 6,733.22 - R 6,733.22
R 6,733.22

trip unit MicroLogic 1.3 M for ComPacT NSX 630 circuit breakers, electronic, rating 500 A, 3 poles 3d

Schneider Electric
R 3,757.33 - R 3,757.33
R 3,757.33
R 3,757.33 - R 3,757.33
R 3,757.33
14 in stock

This MicroLogic 1.3 M is a 3 poles 3d electronic trip unit used on ComPacT NSX 630 circuit breakers. This 500A rating electronic trip unit is an op...

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R 3,757.33 - R 3,757.33
R 3,757.33
R 3,757.33 - R 3,757.33
R 3,757.33
Available for backorder

Circuit breaker ComPacT NSX400HB2, 100kA at 690VAC, MicroLogic 2.3 trip unit 400A, 3 poles 3d

Schneider Electric
R 22,738.81 - R 22,738.81
R 22,738.81
R 22,738.81 - R 22,738.81
R 22,738.81
Available for backorder

This ComPacT NSX400HB2 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 22,738.81 - R 22,738.81
R 22,738.81
R 22,738.81 - R 22,738.81
R 22,738.81
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400HB1, 75kA at 690VAC, MicroLogic 2.3 M trip unit 320A, 3 poles 3d

Schneider Electric
R 25,576.41 - R 25,576.41
R 25,576.41
R 25,576.41 - R 25,576.41
R 25,576.41
Available for backorder

This ComPacT NSX400HB1 is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for moto...

View full details
R 25,576.41 - R 25,576.41
R 25,576.41
R 25,576.41 - R 25,576.41
R 25,576.41
Available for backorder

Circuit breaker ComPacT NSX400HB1, 75kA at 690VAC, MicroLogic 2.3 trip unit, 400A, 3 poles 3d

Schneider Electric
R 26,456.77 - R 26,456.77
R 26,456.77
R 26,456.77 - R 26,456.77
R 26,456.77
Only 5 left!

This ComPacT NSX400HB1 is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all ...

View full details
R 26,456.77 - R 26,456.77
R 26,456.77
R 26,456.77 - R 26,456.77
R 26,456.77

Circuit breaker ComPacT NSX400HB1, 75kA at 690VAC, MicroLogic 1.3 M trip unit 320A, 3 poles 3d

Schneider Electric
R 24,874.62 - R 24,874.62
R 24,874.62
R 24,874.62 - R 24,874.62
R 24,874.62
24 in stock

This ComPacT NSX400HB1 is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for moto...

View full details
R 24,874.62 - R 24,874.62
R 24,874.62
R 24,874.62 - R 24,874.62
R 24,874.62
Available for backorder

Circuit breaker ComPacT NSX400S DC, 100kA at 750 VDC, TM-DC trip unit, 400 A rating, 3 poles

Schneider Electric
R 29,183.64 - R 29,183.64
R 29,183.64
R 29,183.64 - R 29,183.64
R 29,183.64
Available for backorder

ComPacT NSX 400S DC is a complete 3 poles fixed circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for applic...

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R 29,183.64 - R 29,183.64
R 29,183.64
R 29,183.64 - R 29,183.64
R 29,183.64
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX320S DC, 100kA at 750 VDC, TM-DC trip unit, 320 A rating, 3 poles

Schneider Electric
R 29,183.64 - R 29,183.64
R 29,183.64
R 29,183.64 - R 29,183.64
R 29,183.64
Available for backorder

ComPacT NSX 320S DC is a complete 3 poles fixed circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for appli...

View full details
R 29,183.64 - R 29,183.64
R 29,183.64
R 29,183.64 - R 29,183.64
R 29,183.64
Available for backorder
Available for backorder

circuit breaker basic frame, ComPacT NSX400S, 100 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 3 poles

Schneider Electric
R 10,693.52 - R 10,693.52
R 10,693.52
R 10,693.52 - R 10,693.52
R 10,693.52
Available for backorder

This is a 3 poles basic frame for ComPacT NSX400S. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

View full details
R 10,693.52 - R 10,693.52
R 10,693.52
R 10,693.52 - R 10,693.52
R 10,693.52
Available for backorder