Picture of Terms & Conditions Terms & Conditions
Picture of Locations Locations
Wishlist Search Cart (0)
×

Molded Case Circuit Breakers - MCCBs

  • Home /
  • Molded Case Circuit Breakers - MCCBs
Picture for category MasterPact MTZ MasterPact MTZ
Picture for category MasterPact NT MasterPact NT
Picture for category MasterPact NW MasterPact NW
Picture for category ComPacT NSXm, new generation ComPacT NSXm, new generation
Picture for category ComPacT NSX, new generation ComPacT NSX, new generation
Picture for category ComPacT NS new generation ComPacT NS new generation
Picture for category ComPact NS ComPact NS
Picture for category ComPacT for DC networks, new generation ComPacT for DC networks, new generation
Picture for category CNS CNS
Picture for category ComPact INS/INV ComPact INS/INV
Picture for category FuPacT FuPacT
Picture for category ComPacT NSXm NA, new generation ComPacT NSXm NA, new generation
Picture for category ComPacT NSX NA, new generation ComPacT NSX NA, new generation
Picture for category ComPacT NS NA, new generation ComPacT NS NA, new generation
Picture for category MasterPact Switch-disconnectors MasterPact Switch-disconnectors
Picture for category TransferPacT TransferPacT
Picture for category TransferPacT: MasterPact MTZ, Compact NS based TransferPacT: MasterPact MTZ, Compact NS based
Picture for category ComPact NSX ComPact NSX
Picture for category Compact NSX for Direct Current Compact NSX for Direct Current
Picture for category ComPact NSXm ComPact NSXm
Picture for category Masterpact MTZ1 Masterpact MTZ1
Picture for category Masterpact MTZ2 Masterpact MTZ2
Category
Subcategory
Product Type
product or component type
[Ie] rated operational current
[In] rated current
[In] rated current
[In] rated current
[Uc] control circuit voltage
[Ue] rated operational voltage
[Ue] rated operational voltage
[Ue] rated operational voltage
[Ue] rated operational voltage
[Us] rated supply voltage
Accessory / separate part categor
Accessory / separate part destination
accessory / separate part type
Breaking capacity
Breaking capacity code
cable cross section
Cable length
Concentrator compatibility
Conductor material
Connection position
Connections - terminals
Control circuit type
Control type
Device application
Device short name
earth-leakage protection
Enclosure mounting style
Form factor
handle colour
Handle front plate colour
IP degree of protection
Maximum current [Imax]
Mounting location
Mounting mode
Network frequency
Network type
Number of poles
Offer type
Poles
poles description
Product mounting position
Quantity per set
Range
Range of product
Rotary handle mounting location
Rotary handle mounting style
Supply circuit type
Supply frequency
Tightening torque
Trip unit name
Trip unit protection functions
Trip unit technology
Type of keylock
Type of operating handle
Utilisation category
Visible break
Voltage release type
wiring mode
Filter by manufacturer
Categories
Manufacturers
View all
Circuit breakers automatically disconnect power when a short circuit fault is detected downstream or when the circuit becomes overloaded, exceeding the electrical cable current capacity. Molded Case Circuit Breakers (MCCB) protect circuits between 16 amps to 3200 amps and are typically used as the main breaker in a switchboard or to power large equipment directly. Ideal for buildings or manufacturing sites where a higher demand for low voltage power is required.
View as Grid List
Picture of Shutter, MasterPact NT, chassis, spare part, drawout, 3 poles, insulation accessory Picture of Shutter, MasterPact NT, chassis, spare part, drawout, 3 poles, insulation accessory

Shutter, MasterPact NT, chassis, spare part, drawout, 3 poles, insulation accessory

SPK33765
Shutter, MasterPact NT, chassis, spare part, drawout, 3 poles, insulation accessory
$432.85 inc GST $623.30 inc GST
Picture of Shutter, MasterPact NT, chassis, spare part, drawout, 4 poles, insulation accessory Picture of Shutter, MasterPact NT, chassis, spare part, drawout, 4 poles, insulation accessory

Shutter, MasterPact NT, chassis, spare part, drawout, 4 poles, insulation accessory

SPK33766
Shutter, MasterPact NT, chassis, spare part, drawout, 4 poles, insulation accessory
$432.85 inc GST $623.30 inc GST
Picture of Shutter, MasterPact NW, chassis, spare part, actuator for top or bottom Picture of Shutter, MasterPact NW, chassis, spare part, actuator for top or bottom

Shutter, MasterPact NW, chassis, spare part, actuator for top or bottom

SPK47922
Shutter, MasterPact NW, chassis, spare part, actuator for top or bottom
$60.96 inc GST $87.78 inc GST
Picture of Shutter, MasterPact NW, chassis, spare part, drawout Picture of Shutter, MasterPact NW, chassis, spare part, drawout

Shutter, MasterPact NW, chassis, spare part, drawout

SPK48591
Shutter, MasterPact NW, chassis, spare part, drawout
$60.96 inc GST $87.78 inc GST
Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles

Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles

SPK48722
Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles
$647.90 inc GST $932.98 inc GST
Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles, for NW08 to NW40 Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles, for NW08 to NW40

Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles, for NW08 to NW40

SPK48721
Shutter, MasterPact NW, chassis, spare part, drawout, 3 poles, for NW08 to NW40
$432.85 inc GST $623.30 inc GST
Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for 4000B and 6300A Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for 4000B and 6300A

Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for 4000B and 6300A

SPK48724
Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for 4000B and 6300A
$865.70 inc GST $1,246.61 inc GST
Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for NW08 to NW40 Picture of Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for NW08 to NW40

Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for NW08 to NW40

SPK48723
Shutter, MasterPact NW, chassis, spare part, drawout, 4 poles, for NW08 to NW40
$647.90 inc GST $932.98 inc GST
Picture of Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, 4 poles, shutter position indication and locking for NW08 to NW40 Picture of Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, 4 poles, shutter position indication and locking for NW08 to NW40

Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, 4 poles, shutter position indication and locking for NW08 to NW40

SPK48592
Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, 4 poles, shutter position indication and locking for NW08 to NW40
$2,378.20 inc GST $3,424.61 inc GST
Picture of Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, shutter position indication and locking for NW40b to NW63 Picture of Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, shutter position indication and locking for NW40b to NW63

Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, shutter position indication and locking for NW40b to NW63

SPK48593
Shutter, MasterPact NW, spare part, chassis, drawout, 3 poles, shutter position indication and locking for NW40b to NW63
$3,066.03 inc GST $4,415.08 inc GST
Picture of Shutter, MasterPact NW, spare part, chassis, drawout, 4 poles, shutter position indication and locking for NW40b to NW63 Picture of Shutter, MasterPact NW, spare part, chassis, drawout, 4 poles, shutter position indication and locking for NW40b to NW63

Shutter, MasterPact NW, spare part, chassis, drawout, 4 poles, shutter position indication and locking for NW40b to NW63

SPK48594
Shutter, MasterPact NW, spare part, chassis, drawout, 4 poles, shutter position indication and locking for NW40b to NW63
$4,719.18 inc GST $6,795.62 inc GST
Picture of shutters, ComPact NSX100/160/250, for plug-in base, IP40 Picture of shutters, ComPact NSX100/160/250, for plug-in base, IP40

shutters, ComPact NSX100/160/250, for plug-in base, IP40

LV429271
shutters, ComPact NSX100/160/250, for plug-in base, IP40
$51.81 inc GST $34.67 inc GST
Picture of Shutters, ComPacT NSX400/630, plug in base accessories, IP40, 2 parts Picture of Shutters, ComPacT NSX400/630, plug in base accessories, IP40, 2 parts

Shutters, ComPacT NSX400/630, plug in base accessories, IP40, 2 parts

LV432521
Shutters, ComPacT NSX400/630, plug in base accessories, IP40, 2 parts
$86.24 inc GST $57.71 inc GST
Picture of Side plate, MasterPact NT, frame, spare part, fixed, side support Picture of Side plate, MasterPact NT, frame, spare part, fixed, side support

Side plate, MasterPact NT, frame, spare part, fixed, side support

SPK33647
Side plate, MasterPact NT, frame, spare part, fixed, side support
$345.95 inc GST $498.17 inc GST
Picture of Side plate, MasterPact NW, frame, spare part, side support plate, 2 support brackets for fixed horizontal Picture of Side plate, MasterPact NW, frame, spare part, side support plate, 2 support brackets for fixed horizontal

Side plate, MasterPact NW, frame, spare part, side support plate, 2 support brackets for fixed horizontal

SPK47828
Side plate, MasterPact NW, frame, spare part, side support plate, 2 support brackets for fixed horizontal
$345.95 inc GST $498.17 inc GST
Picture of Side plate, MasterPact NW, spare part, fixed, vertically mounted, side support, 2 support brackets for fixed vertical Picture of Side plate, MasterPact NW, spare part, fixed, vertically mounted, side support, 2 support brackets for fixed vertical

Side plate, MasterPact NW, spare part, fixed, vertically mounted, side support, 2 support brackets for fixed vertical

SPK47829
Side plate, MasterPact NW, spare part, fixed, vertically mounted, side support, 2 support brackets for fixed vertical
$194.48 inc GST $280.05 inc GST
Picture of snap-in nuts, ComPact NSX100, M6, set of 12 parts Picture of snap-in nuts, ComPact NSX100, M6, set of 12 parts

snap-in nuts, ComPact NSX100, M6, set of 12 parts

LV429234
snap-in nuts, ComPact NSX100, M6, set of 12 parts
$121.22 inc GST $81.11 inc GST
Picture of snap-in nuts, ComPact NSX160/250, M8, set of 12 parts Picture of snap-in nuts, ComPact NSX160/250, M8, set of 12 parts

snap-in nuts, ComPact NSX160/250, M8, set of 12 parts

LV430554
snap-in nuts, ComPact NSX160/250, M8, set of 12 parts
$113.96 inc GST $76.25 inc GST
Picture of Support 24/7

Support 24/7

Supporting electricians, OEMs, and switchboard builders with fast, accurate support.
Picture of Easy Returns

Easy Returns

One return policy for all products, we replace faulty ordered products.
Picture of Fast Shipping

Fast Shipping

Generally our delivery times are within 1-3 days from your order!
Picture of Free Delivery

Free Delivery

Order over $499 and free shipping is unlocked on us.
Contact Us

Email :
sales@switchboardinabox.com.au

design@switchboardinabox.com.au

accounts@switchboardinabox.com.au

Phone : 1300 724 622
ABN: 39 620 718 336
Powered by nopCommerce
Supported cards
Copyright © 2026 Switchboard in a Box. All rights reserved.