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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
449 in stock

Circuit Breaker Basic Frame Compact Nsx630N 50 Ka At 415 Vac 50 60 Hz 630 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx630N 50...

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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
30 in stock

Circuit Breaker Basic Frame Compact Nsx630L 150 Ka At 415 Vac 50 60 Hz 630 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx630L 1...

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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, 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
89 in stock

Circuit Breaker Basic Frame Compact Nsx630H 70 Ka At 415 Vac 50 60 Hz 630 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx630H 70...

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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
45 in stock

Circuit Breaker Basic Frame Compact Nsx630F 36 Ka At 415 Vac 50 60 Hz 630 A Without Trip Unit 4 PolesCircuit Breaker Basic Frame Compact Nsx630F 36...

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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
172 in stock

Circuit Breaker Basic Frame Compact Nsx630F 36 Ka At 415 Vac 50 60 Hz 630 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx630F 36...

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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 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
85 in stock

Trip Unit Micrologic 2 3 for Compact Nsx 630 Circuit Breakers Electronic Rating 630A 4 Poles 4DTrip Unit Micrologic 2 3 for Compact Nsx 630 Circuit...

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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 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
354 in stock

Click here to view spec sheet.

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
414 in stock

Trip Unit Micrologic 2 3 for Compact Nsx 630 Circuit Breakers Electronic Rating 630A 3 Poles 3DTrip Unit Micrologic 2 3 for Compact Nsx 630 Circuit...

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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
25 in stock

Trip Unit Micrologic 1 3 M for Compact Nsx 630 Circuit Breakers Electronic Rating 500 A 3 Poles 3DTrip Unit Micrologic 1 3 M for Compact Nsx 630 Ci...

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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

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
20 in stock

Circuit Breaker Compact Nsx400Hb1 75Ka At 690Vac Micrologic 2 3 Trip Unit 400A 3 Poles 3DCircuit Breaker Compact Nsx400Hb1 75Ka At 690Vac Micrologi...

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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
11 in stock

Circuit Breaker Compact Nsx400Hb1 75Ka At 690Vac Micrologic 1 3 M Trip Unit 320A 3 Poles 3DCircuit Breaker Compact Nsx400Hb1 75Ka At 690Vac Microlo...

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R 24,874.62 - R 24,874.62
R 24,874.62
R 24,874.62 - R 24,874.62
R 24,874.62

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
29 in stock

Circuit Breaker Basic Frame Compact Nsx400N 50 Ka At 415 Vac 50 60 Hz 400 A Without Trip Unit 4 PolesCircuit Breaker Basic Frame Compact Nsx400N 50...

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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

circuit breaker basic frame, ComPacT NSX400N, 50 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 3 poles

Schneider Electric
R 8,837.63 - R 8,837.63
R 8,837.63
R 8,837.63 - R 8,837.63
R 8,837.63
273 in stock

Circuit Breaker Basic Frame Compact Nsx400N 50 Ka At 415 Vac 50 60 Hz 400 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx400N 50...

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R 8,837.63 - R 8,837.63
R 8,837.63
R 8,837.63 - R 8,837.63
R 8,837.63

circuit breaker basic frame, ComPacT NSX400L, 150 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 3 poles

Schneider Electric
R 11,762.86 - R 11,762.86
R 11,762.86
R 11,762.86 - R 11,762.86
R 11,762.86
23 in stock

Circuit Breaker Basic Frame Compact Nsx400L 150 Ka At 415 Vac 50 60 Hz 400 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx400L 1...

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R 11,762.86 - R 11,762.86
R 11,762.86
R 11,762.86 - R 11,762.86
R 11,762.86

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
Only 4 left!

Circuit Breaker Basic Frame Compact Nsx400H 70 Ka At 415 Vac 50 60 Hz 400 A Without Trip Unit 4 PolesCircuit Breaker Basic Frame Compact Nsx400H 70...

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R 12,961.82 - R 12,961.82
R 12,961.82
R 12,961.82 - R 12,961.82
R 12,961.82

circuit breaker basic frame, ComPacT NSX400H, 70 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 3 poles

Schneider Electric
R 9,721.38 - R 9,721.38
R 9,721.38
R 9,721.38 - R 9,721.38
R 9,721.38
63 in stock

Circuit Breaker Basic Frame Compact Nsx400H 70 Ka At 415 Vac 50 60 Hz 400 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx400H 70...

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R 9,721.38 - R 9,721.38
R 9,721.38
R 9,721.38 - R 9,721.38
R 9,721.38

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
50 in stock

Circuit Breaker Basic Frame Compact Nsx400F 36 Ka At 415 Vac 50 60 Hz 400 A Without Trip Unit 4 PolesCircuit Breaker Basic Frame Compact Nsx400F 36...

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R 10,712.27 - R 10,712.27
R 10,712.27
R 10,712.27 - R 10,712.27
R 10,712.27

circuit breaker basic frame, ComPacT NSX400F, 36 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 3 poles

Schneider Electric
R 8,034.20 - R 8,034.20
R 8,034.20
R 8,034.20 - R 8,034.20
R 8,034.20
1009 in stock

Circuit Breaker Basic Frame Compact Nsx400F 36 Ka At 415 Vac 50 60 Hz 400 A Without Trip Unit 3 PolesCircuit Breaker Basic Frame Compact Nsx400F 36...

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R 8,034.20 - R 8,034.20
R 8,034.20
R 8,034.20 - R 8,034.20
R 8,034.20

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
28 in stock

R 9,875.41 - R 9,875.41
R 9,875.41
R 9,875.41 - R 9,875.41
R 9,875.41

trip unit MicroLogic 2.3 for ComPacT NSX 400/630 circuit breakers, electronic, rating 400A, 4 poles 4d

Schneider Electric
R 7,481.36 - R 7,481.36
R 7,481.36
R 7,481.36 - R 7,481.36
R 7,481.36
77 in stock

Trip Unit Micrologic 2 3 for Compact Nsx 400 630 Circuit Breakers Electronic Rating 400A 4 Poles 4DTrip Unit Micrologic 2 3 for Compact Nsx 400 630...

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R 7,481.36 - R 7,481.36
R 7,481.36
R 7,481.36 - R 7,481.36
R 7,481.36

trip unit MicroLogic 5.3 E for ComPacT NSX 400/630 circuit breakers, electronic, rating 400A, 3 poles 3d

Schneider Electric
R 7,406.55 - R 7,406.55
R 7,406.55
R 7,406.55 - R 7,406.55
R 7,406.55
67 in stock

Click here to view spec sheet.

R 7,406.55 - R 7,406.55
R 7,406.55
R 7,406.55 - R 7,406.55
R 7,406.55

trip unit MicroLogic 2.3 M for ComPacT NSX 400/630 circuit breakers, electronic, rating 320 A, 3 poles 3d

Schneider Electric
R 5,806.77 - R 5,806.77
R 5,806.77
R 5,806.77 - R 5,806.77
R 5,806.77
51 in stock

Trip Unit Micrologic 2 3 M for Compact Nsx 400 630 Circuit Breakers Electronic Rating 320 A 3 Poles 3DTrip Unit Micrologic 2 3 M for Compact Nsx 40...

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R 5,806.77 - R 5,806.77
R 5,806.77
R 5,806.77 - R 5,806.77
R 5,806.77

trip unit MicroLogic 2.3 for ComPacT NSX 400/630 circuit breakers, electronic, rating 400A, 3 poles 3d

Schneider Electric
R 5,611.02 - R 5,611.02
R 5,611.02
R 5,611.02 - R 5,611.02
R 5,611.02
446 in stock

Trip Unit Micrologic 2 3 for Compact Nsx 400 630 Circuit Breakers Electronic Rating 400A 3 Poles 3DTrip Unit Micrologic 2 3 for Compact Nsx 400 630...

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R 5,611.02 - R 5,611.02
R 5,611.02
R 5,611.02 - R 5,611.02
R 5,611.02

trip unit MicroLogic 2.3 for ComPacT NSX 400/630 circuit breakers, electronic, rating 250A, 3 poles 3d

Schneider Electric
R 4,675.85 - R 4,675.85
R 4,675.85
R 4,675.85 - R 4,675.85
R 4,675.85
11 in stock

Trip Unit Micrologic 2 3 for Compact Nsx 400 630 Circuit Breakers Electronic Rating 250A 3 Poles 3DTrip Unit Micrologic 2 3 for Compact Nsx 400 630...

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R 4,675.85 - R 4,675.85
R 4,675.85
R 4,675.85 - R 4,675.85
R 4,675.85