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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
Available for backorder

rear insulation screens, ComPact NSX400/630, 4 poles, pitch 70mm, set of 2 parts

Schneider Electric
R 949.80 - R 949.80
R 949.80
R 949.80 - R 949.80
R 949.80
Available for backorder

Rear Insulation Screens Compact Nsx400 630 4 Poles Pitch 70Mm Set Of 2 PartsRear Insulation Screens Compact Nsx400 630 4 Poles Pitch 70Mm Set Of 2 ...

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R 949.80 - R 949.80
R 949.80
R 949.80 - R 949.80
R 949.80
Available for backorder
Available for backorder

rear insulation screens, ComPact NSX400/630, 3 poles, pitch 70mm, set of 2 parts

Schneider Electric
R 678.42 - R 678.42
R 678.42
R 678.42 - R 678.42
R 678.42
Available for backorder

Rear Insulation Screens Compact Nsx400 630 3 Poles Pitch 70Mm Set Of 2 PartsRear Insulation Screens Compact Nsx400 630 3 Poles Pitch 70Mm Set Of 2 ...

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R 678.42 - R 678.42
R 678.42
R 678.42 - R 678.42
R 678.42
Available for backorder
Available for backorder

NS retrofit escutcheon, ComPact NSX400/630, small cut-out

Schneider Electric
R 419.71 - R 419.71
R 419.71
R 419.71 - R 419.71
R 419.71
Available for backorder

Ns Retrofit Escutcheon Compact Nsx400 630 Small Cut OutNs Retrofit Escutcheon Compact Nsx400 630 Small Cut Out is built for safe, reliable use in h...

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R 419.71 - R 419.71
R 419.71
R 419.71 - R 419.71
R 419.71
Available for backorder

interphase barriers, ComPact NSX 400/630, set of 6 parts

Schneider Electric
R 706.28 - R 706.28
R 706.28
R 706.28 - R 706.28
R 706.28
709 in stock

Interphase Barriers Compact Nsx 400 630 Set Of 6 PartsInterphase Barriers Compact Nsx 400 630 Set Of 6 Parts is built for safe, reliable use in hom...

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R 706.28 - R 706.28
R 706.28
R 706.28 - R 706.28
R 706.28
Available for backorder

escutcheon for toggle with trip unit access, fixed ComPact NSX400/630, IP30

Schneider Electric
R 376.01 - R 376.01
R 376.01
R 376.01 - R 376.01
R 376.01
Available for backorder

Escutcheon for Toggle With Trip Unit Access Fixed Compact Nsx400 630 Ip30Escutcheon for Toggle With Trip Unit Access Fixed Compact Nsx400 630 Ip30 ...

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R 376.01 - R 376.01
R 376.01
R 376.01 - R 376.01
R 376.01
Available for backorder
Available for backorder

escutcheon for all control types, fixed ComPact NSX400/630, IP40

Schneider Electric
R 948.57 - R 948.57
R 948.57
R 948.57 - R 948.57
R 948.57
Available for backorder

Escutcheon for All Control Types Fixed Compact Nsx400 630 Ip40Escutcheon for All Control Types Fixed Compact Nsx400 630 Ip40 is built for safe, rel...

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R 948.57 - R 948.57
R 948.57
R 948.57 - R 948.57
R 948.57
Available for backorder
Available for backorder

escutcheon for all control types, fixed ComPact NSX400/630, IP30

Schneider Electric
R 873.68 - R 873.68
R 873.68
R 873.68 - R 873.68
R 873.68
Available for backorder

Escutcheon for All Control Types Fixed Compact Nsx400 630 Ip30Escutcheon for All Control Types Fixed Compact Nsx400 630 Ip30 is built for safe, rel...

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R 873.68 - R 873.68
R 873.68
R 873.68 - R 873.68
R 873.68
Available for backorder
Available for backorder

toggle extension, ComPact NSX400/630, set of 5 spare parts

Schneider Electric
R 1,163.85 - R 1,163.85
R 1,163.85
R 1,163.85 - R 1,163.85
R 1,163.85
Available for backorder

Toggle Extension Compact Nsx400 630 Set Of 5 Spare PartsToggle Extension Compact Nsx400 630 Set Of 5 Spare Parts is built for safe, reliable use in...

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R 1,163.85 - R 1,163.85
R 1,163.85
R 1,163.85 - R 1,163.85
R 1,163.85
Available for backorder
Available for backorder

bag of screws, ComPact NSX400/630, EasyPact CVS CVS400/630

Schneider Electric
R 435.84 - R 435.84
R 435.84
R 435.84 - R 435.84
R 435.84
Available for backorder

Bag Of Screws Compact Nsx400 630 Easypact Cvs Cvs400 630Bag Of Screws Compact Nsx400 630 Easypact Cvs Cvs400 630 is built for safe, reliable use in...

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R 435.84 - R 435.84
R 435.84
R 435.84 - R 435.84
R 435.84
Available for backorder
Available for backorder

plug-in kit, ComPact NSX 400/630 with Vigi add-on module, 4 poles

Schneider Electric
R 11,043.93 - R 11,043.93
R 11,043.93
R 11,043.93 - R 11,043.93
R 11,043.93
Available for backorder

Plug In Kit Compact Nsx 400 630 With Vigi Add On Module 4 PolesPlug In Kit Compact Nsx 400 630 With Vigi Add On Module 4 Poles is built for safe, r...

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R 11,043.93 - R 11,043.93
R 11,043.93
R 11,043.93 - R 11,043.93
R 11,043.93
Available for backorder
Available for backorder

plug-in kit, ComPact NSX 400/630 with Vigi add-on module, 3 poles

Schneider Electric
R 8,683.48 - R 8,683.48
R 8,683.48
R 8,683.48 - R 8,683.48
R 8,683.48
Available for backorder

Plug In Kit Compact Nsx 400 630 With Vigi Add On Module 3 PolesPlug In Kit Compact Nsx 400 630 With Vigi Add On Module 3 Poles is built for safe, r...

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R 8,683.48 - R 8,683.48
R 8,683.48
R 8,683.48 - R 8,683.48
R 8,683.48
Available for backorder
Available for backorder

escutcheon with collar for toggle, drawout ComPact NSX400/630, IP40

Schneider Electric
R 450.90 - R 450.90
R 450.90
R 450.90 - R 450.90
R 450.90
Available for backorder

Escutcheon With Collar for Toggle Drawout Compact Nsx400 630 Ip40Escutcheon With Collar for Toggle Drawout Compact Nsx400 630 Ip40 is built for saf...

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R 450.90 - R 450.90
R 450.90
R 450.90 - R 450.90
R 450.90
Available for backorder

chassis side plates for breaker, ComPact NSX 400/630, withdrawable, 3/4 poles

Schneider Electric
R 920.22 - R 920.22
R 920.22
R 920.22 - R 920.22
R 920.22
34 in stock

Chassis Side Plates for Breaker Compact Nsx 400 630 Withdrawable 3 4 PolesChassis Side Plates for Breaker Compact Nsx 400 630 Withdrawable 3 4 Pole...

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R 920.22 - R 920.22
R 920.22
R 920.22 - R 920.22
R 920.22

chassis side plates for base, ComPact NSX 400/630, withdrawable, 3/4 poles

Schneider Electric
R 2,724.75 - R 2,724.75
R 2,724.75
R 2,724.75 - R 2,724.75
R 2,724.75
Only 2 left!

Chassis Side Plates for Base Compact Nsx 400 630 Withdrawable 3 4 PolesChassis Side Plates for Base Compact Nsx 400 630 Withdrawable 3 4 Poles is b...

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R 2,724.75 - R 2,724.75
R 2,724.75
R 2,724.75 - R 2,724.75
R 2,724.75

long insulated right angle terminal extensions for plug-in base, ComPact NSX 400/630, set of 2 parts

Schneider Electric
R 1,263.69 - R 1,263.69
R 1,263.69
R 1,263.69 - R 1,263.69
R 1,263.69
106 in stock

Long Insulated Right Angle Terminal Extensions for Plug In Base Compact Nsx 400 630 Set Of 2 PartsLong Insulated Right Angle Terminal Extensions fo...

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R 1,263.69 - R 1,263.69
R 1,263.69
R 1,263.69 - R 1,263.69
R 1,263.69

automatic auxiliary connector support, ComPact NSX 400/630, 3 moving connectors, for circuit breaker

Schneider Electric
R 328.72 - R 328.72
R 328.72
R 328.72 - R 328.72
R 328.72
176 in stock

Automatic Auxiliary Connector Support Compact Nsx 400 630 3 Moving Connectors for Circuit BreakerAutomatic Auxiliary Connector Support Compact Nsx ...

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R 328.72 - R 328.72
R 328.72
R 328.72 - R 328.72
R 328.72

automatic auxiliary connector, moving part, ComPact NSX 400/630, for circuit breaker, 1 to 9 wires

Schneider Electric
R 484.02 - R 484.02
R 484.02
R 484.02 - R 484.02
R 484.02
928 in stock

Automatic Auxiliary Connector Moving Part Compact Nsx 400 630 for Circuit Breaker 1 To 9 WiresAutomatic Auxiliary Connector Moving Part Compact Nsx...

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R 484.02 - R 484.02
R 484.02
R 484.02 - R 484.02
R 484.02
Available for backorder

shutters, ComPact NSX400/630, for plug-in base, IP40

Schneider Electric
R 346.36 - R 346.36
R 346.36
R 346.36 - R 346.36
R 346.36
Available for backorder

Shutters Compact Nsx400 630 for Plug In Base Ip40Shutters Compact Nsx400 630 for Plug In Base Ip40 is built for safe, reliable use in homes, office...

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R 346.36 - R 346.36
R 346.36
R 346.36 - R 346.36
R 346.36
Available for backorder

safety trip interlock, ComPact NSX 400/630 plug-in kit

Schneider Electric
R 486.78 - R 486.78
R 486.78
R 486.78 - R 486.78
R 486.78
667 in stock

Safety Trip Interlock Compact Nsx 400 630 Plug In KitSafety Trip Interlock Compact Nsx 400 630 Plug In Kit is built for safe, reliable use in homes...

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R 486.78 - R 486.78
R 486.78
R 486.78 - R 486.78
R 486.78
Available for backorder

power connections, ComPact NSX400/630 plug-in kit with Vigi add-on, set of 2 parts

Schneider Electric
R 993.58 - R 993.58
R 993.58
R 993.58 - R 993.58
R 993.58
Available for backorder

Power Connections Compact Nsx400 630 Plug In Kit With Vigi Add On Set Of 2 PartsPower Connections Compact Nsx400 630 Plug In Kit With Vigi Add On S...

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R 993.58 - R 993.58
R 993.58
R 993.58 - R 993.58
R 993.58
Available for backorder

power connections, ComPact NSX400/630 plug-in kit, set of 2 parts

Schneider Electric
R 888.33 - R 888.33
R 888.33
R 888.33 - R 888.33
R 888.33
1033 in stock

Power Connections Compact Nsx400 630 Plug In Kit Set Of 2 PartsPower Connections Compact Nsx400 630 Plug In Kit Set Of 2 Parts is built for safe, r...

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R 888.33 - R 888.33
R 888.33
R 888.33 - R 888.33
R 888.33

plug in base, ComPact NSX 400/630, front/rear connected, 4 poles

Schneider Electric
R 10,878.85 - R 10,878.85
R 10,878.85
R 10,878.85 - R 10,878.85
R 10,878.85
69 in stock

Plug In Base Compact Nsx 400 630 Front Rear Connected 4 PolesPlug In Base Compact Nsx 400 630 Front Rear Connected 4 Poles is built for safe, relia...

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R 10,878.85 - R 10,878.85
R 10,878.85
R 10,878.85 - R 10,878.85
R 10,878.85

plug in base, ComPact NSX 400/630, front/rear connected, 3 poles

Schneider Electric
R 8,814.72 - R 8,814.72
R 8,814.72
R 8,814.72 - R 8,814.72
R 8,814.72
389 in stock

Plug In Base Compact Nsx 400 630 Front Rear Connected 3 PolesPlug In Base Compact Nsx 400 630 Front Rear Connected 3 Poles is built for safe, relia...

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R 8,814.72 - R 8,814.72
R 8,814.72
R 8,814.72 - R 8,814.72
R 8,814.72
Available for backorder

torque limiting screws, ComPact NSX 400/630, power connections, set of 12 parts

Schneider Electric
R 457.15 - R 457.15
R 457.15
R 457.15 - R 457.15
R 457.15
Available for backorder

Torque Limiting Screws Compact Nsx 400 630 Power Connections Set Of 12 PartsTorque Limiting Screws Compact Nsx 400 630 Power Connections Set Of 12 ...

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R 457.15 - R 457.15
R 457.15
R 457.15 - R 457.15
R 457.15
Available for backorder