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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
Available for backorder

Circuit breaker ComPacT NSX630F, 36kA at 415VAC, MicroLogic 2.3 trip unit 630A, 4 poles 4d

Schneider Electric
R 27,553.17 - R 27,553.17
R 27,553.17
R 27,553.17 - R 27,553.17
R 27,553.17
Available for backorder

This ComPacT NSX630F is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all st...

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R 27,553.17 - R 27,553.17
R 27,553.17
R 27,553.17 - R 27,553.17
R 27,553.17
Available for backorder

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
Available for backorder

trip unit MicroLogic 6.3 E for ComPacT NSX 630 circuit breakers, electronic, rating 630A, 4 poles 4d

Schneider Electric
R 14,990.84 - R 14,990.84
R 14,990.84
R 14,990.84 - R 14,990.84
R 14,990.84
Available for backorder

This MicroLogic 6.3 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 14,990.84 - R 14,990.84
R 14,990.84
R 14,990.84 - R 14,990.84
R 14,990.84
Available for backorder
Available for backorder

Switch disconnector ComPacT NSX400...630NA, DC, 630A rating, 4 poles

Schneider Electric
R 25,360.86 - R 25,360.86
R 25,360.86
R 25,360.86 - R 25,360.86
R 25,360.86
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 25,360.86 - R 25,360.86
R 25,360.86
R 25,360.86 - R 25,360.86
R 25,360.86
Available for backorder

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...

View full details
R 11,850.47 - R 11,850.47
R 11,850.47
R 11,850.47 - R 11,850.47
R 11,850.47
Available for backorder

Switch disconnector ComPacT NSX500NA DC PV, 500A rating, 4 poles

Schneider Electric
R 38,194.31 - R 38,194.31
R 38,194.31
R 38,194.31 - R 38,194.31
R 38,194.31
Available for backorder

ComPacT NSX500NA DC PV is a complete 4 poles switch disconnerctor. It's used to control and isolate electrical distribution circuits. It's an optim...

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R 38,194.31 - R 38,194.31
R 38,194.31
R 38,194.31 - R 38,194.31
R 38,194.31
Available for backorder

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
Available for backorder

trip unit MicroLogic 1.3 M for ComPacT NSX 630 circuit breakers, electronic, rating 500 A, 4 poles 3d

Schneider Electric
R 4,651.94 - R 4,651.94
R 4,651.94
R 4,651.94 - R 4,651.94
R 4,651.94
Available for backorder

This MicroLogic 1.3 M is a 4 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 4,651.94 - R 4,651.94
R 4,651.94
R 4,651.94 - R 4,651.94
R 4,651.94
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400HB1, 75kA at 690VAC, MicroLogic 2.3 trip unit 400A, 4 poles 4d

Schneider Electric
R 32,624.90 - R 32,624.90
R 32,624.90
R 32,624.90 - R 32,624.90
R 32,624.90
Available for backorder

This ComPacT NSX400HB1 is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all ...

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R 32,624.90 - R 32,624.90
R 32,624.90
R 32,624.90 - R 32,624.90
R 32,624.90
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400N, 50kA at 415VAC, MicroLogic 2.3 trip unit 400A, 4 poles 4d

Schneider Electric
R 19,264.83 - R 19,264.83
R 19,264.83
R 19,264.83 - R 19,264.83
R 19,264.83
Available for backorder

This ComPacT NSX400N is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all st...

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R 19,264.83 - R 19,264.83
R 19,264.83
R 19,264.83 - R 19,264.83
R 19,264.83
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400N, 50kA at 415VAC, MicroLogic 2.3 trip unit 250A, 4 poles 4d

Schneider Electric
R 18,017.96 - R 18,017.96
R 18,017.96
R 18,017.96 - R 18,017.96
R 18,017.96
Available for backorder

This ComPacT NSX400N is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all st...

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R 18,017.96 - R 18,017.96
R 18,017.96
R 18,017.96 - R 18,017.96
R 18,017.96
Available for backorder

circuit breaker basic frame, ComPacT NSX400N, 50 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 4 poles

Schneider Electric
R 11,783.49 - R 11,783.49
R 11,783.49
R 11,783.49 - R 11,783.49
R 11,783.49
34 in stock

This is a 4 poles basic frame for ComPacT NSX400N. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

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R 11,783.49 - R 11,783.49
R 11,783.49
R 11,783.49 - R 11,783.49
R 11,783.49
Available for backorder

Circuit breaker ComPacT NSX400K, 36kA at 800VAC, 10kA at 1000VAC, MicroLogic 2.3 trip unit, 400A, 4 poles 4d

Schneider Electric
R 30,482.42 - R 30,482.42
R 30,482.42
R 30,482.42 - R 30,482.42
R 30,482.42
Available for backorder

This is 400A, 4 poles 4d, 36kA at 800VAC ComPacT NSX400K circuit breaker with MicroLogic 2.3 trip unit.Product Highlights Schneider Electric green ...

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R 30,482.42 - R 30,482.42
R 30,482.42
R 30,482.42 - R 30,482.42
R 30,482.42
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400H, 70kA at 415VAC, MicroLogic 2.3 trip unit 400A, 4 poles 4d

Schneider Electric
R 20,443.18 - R 20,443.18
R 20,443.18
R 20,443.18 - R 20,443.18
R 20,443.18
Available for backorder

This ComPacT NSX400H is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all st...

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R 20,443.18 - R 20,443.18
R 20,443.18
R 20,443.18 - R 20,443.18
R 20,443.18
Available for backorder
Available for backorder

circuit breaker basic frame, ComPacT NSX400H, 70 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 4 poles

Schneider Electric
R 12,961.82 - R 12,961.82
R 12,961.82
R 12,961.82 - R 12,961.82
R 12,961.82
Available for backorder

This is a 4 poles basic frame for ComPacT NSX400H. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

View full details
R 12,961.82 - R 12,961.82
R 12,961.82
R 12,961.82 - R 12,961.82
R 12,961.82
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400 DC PV, 400A, 1000 V, TM-D trip unit, 4 poles

Schneider Electric
R 41,582.44 - R 41,582.44
R 41,582.44
R 41,582.44 - R 41,582.44
R 41,582.44
Available for backorder

ComPacT NSX 400F DC PV is a 4 poles circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for photovoltaic appli...

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R 41,582.44 - R 41,582.44
R 41,582.44
R 41,582.44 - R 41,582.44
R 41,582.44
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400F DC, 36kA at 750 VDC, TM-DC trip unit, 400 A rating, 4 poles

Schneider Electric
R 22,269.19 - R 22,269.19
R 22,269.19
R 22,269.19 - R 22,269.19
R 22,269.19
Available for backorder

ComPacT NSX 400F DC is a complete 4 poles fixed circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for applic...

View full details
R 22,269.19 - R 22,269.19
R 22,269.19
R 22,269.19 - R 22,269.19
R 22,269.19
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX320 DC PV, 320A, 1000 V, TM-D trip unit, 4 poles

Schneider Electric
R 41,335.47 - R 41,335.47
R 41,335.47
R 41,335.47 - R 41,335.47
R 41,335.47
Available for backorder

ComPacT NSX 320F DC PV is a 4 poles circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for photovoltaic appli...

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R 41,335.47 - R 41,335.47
R 41,335.47
R 41,335.47 - R 41,335.47
R 41,335.47
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX320F DC, 36kA at 750 VDC, TM-DC trip unit, 320 A rating, 4 poles

Schneider Electric
R 21,466.01 - R 21,466.01
R 21,466.01
R 21,466.01 - R 21,466.01
R 21,466.01
Available for backorder

ComPacT NSX 320F DC is a complete 4 poles fixed circuit breaker designed to optimize space and breaking capacity. It's an optimal choice for appli...

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R 21,466.01 - R 21,466.01
R 21,466.01
R 21,466.01 - R 21,466.01
R 21,466.01
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400F, 36kA at 415VAC, MicroLogic 2.3 trip unit 400A, 4 poles 4d

Schneider Electric
R 17,738.77 - R 17,738.77
R 17,738.77
R 17,738.77 - R 17,738.77
R 17,738.77
Available for backorder

This ComPacT NSX400F is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all st...

View full details
R 17,738.77 - R 17,738.77
R 17,738.77
R 17,738.77 - R 17,738.77
R 17,738.77
Available for backorder

circuit breaker basic frame, ComPacT NSX400F, 36 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 4 poles

Schneider Electric
R 10,712.27 - R 10,712.27
R 10,712.27
R 10,712.27 - R 10,712.27
R 10,712.27
70 in stock

This is a 4 poles basic frame for ComPacT NSX400F. ComPacT NSX is designed to optimize space and breaking capacity for all standard and specific ap...

View full details
R 10,712.27 - R 10,712.27
R 10,712.27
R 10,712.27 - R 10,712.27
R 10,712.27
Available for backorder

trip unit MicroLogic 6.3 E for ComPacT NSX 400/630 circuit breakers, electronic, rating 400A, 4 poles 4d

Schneider Electric
R 12,492.37 - R 12,492.37
R 12,492.37
R 12,492.37 - R 12,492.37
R 12,492.37
Available for backorder

This MicroLogic 6.3 E (Energy) is a 4 poles 4d electronic trip unit used on ComPacT NSX 400/630 circuit breakers. This 400A rating electronic trip ...

View full details
R 12,492.37 - R 12,492.37
R 12,492.37
R 12,492.37 - R 12,492.37
R 12,492.37
Available for backorder

trip unit MicroLogic 5.3 E for ComPacT NSX 400/630 circuit breakers, electronic, rating 400A, 4 poles 4d

Schneider Electric
R 9,875.41 - R 9,875.41
R 9,875.41
R 9,875.41 - R 9,875.41
R 9,875.41
24 in stock

This MicroLogic 5.3 E (Energy) is a 4 poles 4d electronic trip unit used on ComPacT NSX 400/630 circuit breakers. This 400A rating electronic trip ...

View full details
R 9,875.41 - R 9,875.41
R 9,875.41
R 9,875.41 - R 9,875.41
R 9,875.41
Available for backorder

Switch disconnector ComPacT NSX400...630NA, DC, 400A rating, 4 poles

Schneider Electric
R 16,819.98 - R 16,819.98
R 16,819.98
R 16,819.98 - R 16,819.98
R 16,819.98
Available for backorder

ComPacT NSX400NA DC is a complete 4 poles switch disconnerctor. It's used to control and isolate electrical distribution circuits. It requires an u...

View full details
R 16,819.98 - R 16,819.98
R 16,819.98
R 16,819.98 - R 16,819.98
R 16,819.98
Available for backorder