Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

34963 Products showing for Fuses & Circuit Breakers

109 of 999+
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7686
  • Mfr. Part No. C12E4TM160B
Each
$2,208.28(exc. GST)
RS PRO Non-Resettable Wire Ended Fuse 4A, 250V ac
  • RS Stock No. 911-3556
Each (In a Pack of 10)
$0.49(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 50A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-440
  • Mfr. Part No. 3VA5150-6ED11-1AA0
Each
$962.56(exc. GST)
Fuse Holder Fuse Holder
  • RS Stock No. 261-966
  • Mfr. Part No. RS32H
1 Pack of 10
$577.67(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA, 3 channels
  • RS Stock No. 155-870
  • Mfr. Part No. 3VA2450-7JP32-0AA0
Each
$8,757.29(exc. GST)
Eaton Fuse Holder Microswitch
  • RS Stock No. 182-1349
  • Mfr. Part No. 170H0099
Each (In a Box of 10)
$413.079(exc. GST)
Eaton Fuse Holder Adapter Kit
  • RS Stock No. 707-7234
  • Mfr. Part No. GRS63-A
Each
$81.43(exc. GST)
Siemens SENTRON Busbar Connector, 450V
  • RS Stock No. 211-3831
  • Mfr. Part No. 5ST3781-2
Each (In a Pack of 10)
$26.089(exc. GST)
ABB Emax2 Electronic Circuit Breaker 630A Ekip Dip LI, 3 channels
  • RS Stock No. 259-4001
  • Mfr. Part No. 1SDA072061R1
Each
$5,586.41(exc. GST)
Mersen 25A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0614
  • Mfr. Part No. F1014581 / FR10GR69V25
Each
$29.04(exc. GST)
Hager RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type A
  • RS Stock No. 602-093
  • Mfr. Part No. ADH720F
Each
$498.20(exc. GST)
Schneider Electric, PowerLogic, 63A, Energy Sensor, 1VA, Wired
  • RS Stock No. 275-6659
  • Mfr. Part No. A9MEM1560
Each
$311.94(exc. GST)
Schneider Electric, PowerPact Circuit breaker 1P 60A, Breaking Capacity 14 kA, Clip-On
  • RS Stock No. 335-382
  • Mfr. Part No. BDL16060
Each
$494.60(exc. GST)
Hager CFB RCD Switch, 40A, 4 Pole, 300mA, Type B, 230 → 400V
  • RS Stock No. 599-754
  • Mfr. Part No. CFB740F
Each
$2,235.16(exc. GST)
Mersen 5A Time Lag Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 630-844
  • Mfr. Part No. Z090550Q
1 Box of 10
$15.04(exc. GST)
Littelfuse SMD Non Resettable Fuse 2A, 125V ac
  • RS Stock No. 769-3738
  • Mfr. Part No. 0452002.NRL
Each (In a Pack of 10)
$2.247(exc. GST)
Littelfuse SMD Non Resettable Fuse 2A, 125V ac
  • RS Stock No. 769-3713
  • Mfr. Part No. 0451002.NRL
Each (In a Pack of 10)
$2.325(exc. GST)
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4843
  • Mfr. Part No. 3VA2580-5KQ32-0AA0
Each
$12,210.87(exc. GST)
Murrelektronik Limited Mico Pro Circuit Breaker
  • RS Stock No. 285-5872
  • Mfr. Part No. 9000-41011-0400000
Each
$95.26(exc. GST)
Limitor Thermal Fuse +133°C 15 A, 250V ac
  • RS Stock No. 797-6055
  • Mfr. Part No. SF 129 R
Each (In a Pack of 10)
$2.616(exc. GST)
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