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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 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...

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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
Available for backorder

Circuit breaker ComPacT NSX400F DC, 36kA at 750 VDC, TM-DC trip unit, 400 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 400F 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 NSX320F DC, 36kA at 750 VDC, TM-DC trip unit, 320 A rating, 3 poles

Schneider Electric
R 16,512.30 - R 16,512.30
R 16,512.30
R 16,512.30 - R 16,512.30
R 16,512.30
Available for backorder

ComPacT NSX 320F 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 16,512.30 - R 16,512.30
R 16,512.30
R 16,512.30 - R 16,512.30
R 16,512.30
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400F, 36kA at 415VAC, MicroLogic 2.3 M trip unit 320A, 3 poles 3d

Schneider Electric
R 13,840.98 - R 13,840.98
R 13,840.98
R 13,840.98 - R 13,840.98
R 13,840.98
Available for backorder

This ComPacT NSX400F 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 13,840.98 - R 13,840.98
R 13,840.98
R 13,840.98 - R 13,840.98
R 13,840.98
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400F, 36kA at 415VAC, MicroLogic 2.3 trip unit 400A, 3 poles 3d

Schneider Electric
R 13,645.21 - R 13,645.21
R 13,645.21
R 13,645.21 - R 13,645.21
R 13,645.21
Available for backorder

This ComPacT NSX400F 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 13,645.21 - R 13,645.21
R 13,645.21
R 13,645.21 - R 13,645.21
R 13,645.21
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400F, 36kA at 415VAC, MicroLogic 2.3 trip unit 250A, 3 poles 3d

Schneider Electric
R 12,710.05 - R 12,710.05
R 12,710.05
R 12,710.05 - R 12,710.05
R 12,710.05
Available for backorder

This ComPacT NSX400F 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 12,710.05 - R 12,710.05
R 12,710.05
R 12,710.05 - R 12,710.05
R 12,710.05
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX400F, 36kA at 415VAC, MicroLogic 1.3 M trip unit 320A, 3 poles 3d

Schneider Electric
R 11,449.94 - R 11,449.94
R 11,449.94
R 11,449.94 - R 11,449.94
R 11,449.94
Available for backorder

This ComPacT NSX400F 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 11,449.94 - R 11,449.94
R 11,449.94
R 11,449.94 - R 11,449.94
R 11,449.94
Available for backorder
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 ...

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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
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...

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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
Available for backorder

trip unit MicroLogic 6.3 E for ComPacT NSX 400/630 circuit breakers, electronic, rating 400A, 3 poles 3d

Schneider Electric
R 9,369.29 - R 9,369.29
R 9,369.29
R 9,369.29 - R 9,369.29
R 9,369.29
Available for backorder

This MicroLogic 6.3 E (Energy) is a 3 poles 3d electronic trip unit used on ComPacT NSX 400/630 circuit breakers. This 400A rating electronic trip ...

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R 9,369.29 - R 9,369.29
R 9,369.29
R 9,369.29 - R 9,369.29
R 9,369.29
Available for backorder
Available for backorder

Switch disconnector ComPacT NSX400...630NA, DC, 400A rating, 3 poles

Schneider Electric
R 12,938.65 - R 12,938.65
R 12,938.65
R 12,938.65 - R 12,938.65
R 12,938.65
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 12,938.65 - R 12,938.65
R 12,938.65
R 12,938.65 - R 12,938.65
R 12,938.65
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB2, 100kA at 690VAC, TMD trip unit 250A, 3 poles 3d

Schneider Electric
R 10,249.88 - R 10,249.88
R 10,249.88
R 10,249.88 - R 10,249.88
R 10,249.88
Available for backorder

This ComPacT NSX250HB2 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 10,249.88 - R 10,249.88
R 10,249.88
R 10,249.88 - R 10,249.88
R 10,249.88
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB2, 100kA at 690VAC, TMD trip unit 200A, 3 poles 3d

Schneider Electric
R 10,237.17 - R 10,237.17
R 10,237.17
R 10,237.17 - R 10,237.17
R 10,237.17
Available for backorder

This ComPacT NSX250HB2 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 10,237.17 - R 10,237.17
R 10,237.17
R 10,237.17 - R 10,237.17
R 10,237.17
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB2, 100kA at 690VAC, MicroLogic 2.2 trip unit 250A, 3 poles 3d

Schneider Electric
R 13,467.62 - R 13,467.62
R 13,467.62
R 13,467.62 - R 13,467.62
R 13,467.62
Available for backorder

This ComPacT NSX250HB2 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 13,467.62 - R 13,467.62
R 13,467.62
R 13,467.62 - R 13,467.62
R 13,467.62
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB2, 100kA at 690VAC, MicroLogic 2.2 trip unit 160A, 3 poles 3d

Schneider Electric
R 13,465.86 - R 13,465.86
R 13,465.86
R 13,465.86 - R 13,465.86
R 13,465.86
Available for backorder

This ComPacT NSX250HB2 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 13,465.86 - R 13,465.86
R 13,465.86
R 13,465.86 - R 13,465.86
R 13,465.86
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB1, 75kA at 690VAC, TMD trip unit 250A, 4 poles 4d

Schneider Electric
R 21,904.69 - R 21,904.69
R 21,904.69
R 21,904.69 - R 21,904.69
R 21,904.69
Available for backorder

This ComPacT NSX250HB1 is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all ...

View full details
R 21,904.69 - R 21,904.69
R 21,904.69
R 21,904.69 - R 21,904.69
R 21,904.69
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB1, 75kA at 690VAC, TMD trip unit 160A, 4 poles 4d

Schneider Electric
R 20,766.84 - R 20,766.84
R 20,766.84
R 20,766.84 - R 20,766.84
R 20,766.84
Available for backorder

This ComPacT NSX250HB1 is a complete 4P 4d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for all ...

View full details
R 20,766.84 - R 20,766.84
R 20,766.84
R 20,766.84 - R 20,766.84
R 20,766.84
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB1, 75kA at 690VAC, TMD trip unit 160A, 3 poles 3d

Schneider Electric
R 17,048.52 - R 17,048.52
R 17,048.52
R 17,048.52 - R 17,048.52
R 17,048.52
Available for backorder

This ComPacT NSX250HB1 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 17,048.52 - R 17,048.52
R 17,048.52
R 17,048.52 - R 17,048.52
R 17,048.52
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB1, 75kA at 690VAC, TMD trip unit 125A, 3 poles 3d

Schneider Electric
R 15,771.70 - R 15,771.70
R 15,771.70
R 15,771.70 - R 15,771.70
R 15,771.70
Available for backorder

This ComPacT NSX250HB1 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 15,771.70 - R 15,771.70
R 15,771.70
R 15,771.70 - R 15,771.70
R 15,771.70
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB1, 75kA at 690VAC, MicroLogic 6.2 E-M trip unit 220A, 3 poles 3d

Schneider Electric
R 17,865.88 - R 17,865.88
R 17,865.88
R 17,865.88 - R 17,865.88
R 17,865.88
Available for backorder

This ComPacT NSX250HB1 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 17,865.88 - R 17,865.88
R 17,865.88
R 17,865.88 - R 17,865.88
R 17,865.88
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB1, 75kA at 690VAC, MicroLogic 6.2 E trip unit 250A, 3 poles 3d

Schneider Electric
R 18,061.75 - R 18,061.75
R 18,061.75
R 18,061.75 - R 18,061.75
R 18,061.75
Available for backorder

This ComPacT NSX250HB1 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 18,061.75 - R 18,061.75
R 18,061.75
R 18,061.75 - R 18,061.75
R 18,061.75
Available for backorder
Available for backorder

Circuit breaker ComPacT NSX250HB1, 75kA at 690VAC, MicroLogic 6.2 E trip unit 100A, 3 poles 3d

Schneider Electric
R 21,318.46 - R 21,318.46
R 21,318.46
R 21,318.46 - R 21,318.46
R 21,318.46
Available for backorder

This ComPacT NSX250HB1 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 21,318.46 - R 21,318.46
R 21,318.46
R 21,318.46 - R 21,318.46
R 21,318.46
Available for backorder