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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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long terminal shield for spreaders, ComPact NSX400/630, pitch 52.5 mm, IP40, 3 poles

Schneider Electric
R 1,282.30 - R 1,282.30
R 1,282.30
R 1,282.30 - R 1,282.30
R 1,282.30
28 in stock

This is an insulation accessory for 3 poles Compact NSX 400/630 or EasyPact CVS 400/630. This long terminal shield protects against direct contact ...

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R 1,282.30 - R 1,282.30
R 1,282.30
R 1,282.30 - R 1,282.30
R 1,282.30

long terminal shield, ComPact NSX400/630, pitch 45 mm, IP40, 3 poles

Schneider Electric
R 780.33 - R 780.33
R 780.33
R 780.33 - R 780.33
R 780.33
404 in stock

This is an insulation accessory for 3 poles Compact NSX 400/630 or EasyPact CVS 400/630. This long terminal shield protects against direct contact ...

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R 780.33 - R 780.33
R 780.33
R 780.33 - R 780.33
R 780.33

short terminal shield, ComPact NSX400/630, pitch 45 mm, IP40, 3 poles

Schneider Electric
R 590.22 - R 590.22
R 590.22
R 590.22 - R 590.22
R 590.22
632 in stock

This is an insulation accessory for 3 poles Compact NSX 400/630 or EasyPact CVS 400/630. This short terminal shield protects against direct contact...

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R 590.22 - R 590.22
R 590.22
R 590.22 - R 590.22
R 590.22
Available for backorder

45° terminal extensions, ComPact NSX 400/630, set of 3 parts

Schneider Electric
R 959.70 - R 959.70
R 959.70
R 959.70 - R 959.70
R 959.70
Available for backorder

These accessories are 45° terminal extensions for Compact NSX 400/630. These terminal extensions have anti-rotation ribs and can be attached to the...

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R 959.70 - R 959.70
R 959.70
R 959.70 - R 959.70
R 959.70
Available for backorder
Available for backorder

connection adapter for plug in base, ComPact NSX 400/630, 4 poles

Schneider Electric
R 327.95 - R 327.95
R 327.95
R 327.95 - R 327.95
R 327.95
Available for backorder

This is a connection adapter for 4 poles plug-in base for Compact NSX 400/630. It allows to connect the power circuit to the power terminals of Com...

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R 327.95 - R 327.95
R 327.95
R 327.95 - R 327.95
R 327.95
Available for backorder

connection adapter for plug in base, ComPact NSX 400/630, 3 poles

Schneider Electric
R 234.27 - R 234.27
R 234.27
R 234.27 - R 234.27
R 234.27
330 in stock

This is a connection adapter for 3 poles plug-in base for Compact NSX 400/630. It allows to connect the power circuit to the power terminals of Com...

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R 234.27 - R 234.27
R 234.27
R 234.27 - R 234.27
R 234.27
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

This is an insulation accessory for Compact NSX 400/630 or EasyPact CVS 400/630. They are mandatory for devices with spreaders, installed on backpl...

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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
768 in stock

This is an insulation accessory for Compact NSX 400/630 or EasyPact CVS 400/630. These interphase barriers reinforce insulation level at the power ...

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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

This is a front panel escutcheon for Compact NSX 400/630. Escutcheons are mounted on the switchboard door. They increase the degree of protection t...

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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

This is a front panel escutcheon for Compact NSX 400/630 and EasyPact CVS 400/630. Escutcheons are mounted on the switchboard door. They increase t...

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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

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

This is a toggle extension for Compact NSX 400/630 and EasyPact CVS 400/630. The extension is fixed on the standard toggle by a screw (5mm diameter...

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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

This is a bag of 12 CBLZS screws for Compact NSX 400/630 and EasyPact CVS 400/630. The screws are used to fix the front cover, terminal shield s an...

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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

This is a plug-in kit for 4 poles Vigicompact NSX 400/630 fixed circuit breakers (circuit breaker with Vigi add-on module). A plug-in configuration...

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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

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

This is a toggle escutcheon for Compact NSX 400/630. Escutcheons are mounted on the switchboard door. They increase the degree of protection to IP4...

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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
25 in stock

These are chassis side plates for withdrawable 3 or 4 poles Compact NSX 400/630 circuit breakers. These side plates allow the installation on a cha...

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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
15 in stock

These are chassis side plates for withdrawable 3 or 4 poles Compact NSX 400/630 circuit breakers. These side plates allow the installation on a cha...

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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
Available for backorder

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
Available for backorder

These accessories are long insulated right angle terminal extensions for Compact NSX 400/630 plug-in base. These terminal extensions have anti-rota...

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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
Available for backorder

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
175 in stock

This is support for moving part of the automatic connector for Compact NSX 400/630 auxiliaries connection. It is adapted for plug-in base or withdr...

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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
923 in stock

This is the moving part of an automatic connector for Compact NSX 400/630 auxiliaries connection. It is adapted for plug-in base or withdrawable ci...

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R 484.02 - R 484.02
R 484.02
R 484.02 - R 484.02
R 484.02

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
653 in stock

This is a safety trip interlock device for 3 or 4 poles Compact NSX 400/630. It is part of the plug-in kit for Compact NSX circuit breakers. This a...

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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

It is a power connection for Compact NSX400/630 4P plug-in kit. A plug-in configuration is made by adding a plug-in kit to a fixed device. This pow...

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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
983 in stock

It is a power connection for Compact NSX400/630 3P plug-in kit. A plug-in configuration is made by adding a plug-in kit to a fixed device. This pow...

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R 888.33 - R 888.33
R 888.33
R 888.33 - R 888.33
R 888.33
Available for backorder

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
Available for backorder

This is a plug-in base for 4 poles Compact NSX 400/630 circuit breakers. The plug-in base is part of a complete plug-in kit. A plug-in configuratio...

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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
Available for backorder