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

35151 Products showing for Fuses & Circuit Breakers

212 of 999+
Siemens SIRIUS 3RV2 Feeder Terminal for use with 3RV2
  • RS Stock No. 218-1774
  • Mfr. Part No. 3RV2935-5E
Each
$185.74(exc. GST)
Legrand 25A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6121
  • Mfr. Part No. 0 133 25
Each (In a Box of 10)
$4.103(exc. GST)
Eaton xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 251-423
  • Mfr. Part No. 193177 BP-O-850/11-EP-W
Each
$1,622.31(exc. GST)
Schneider Electric Busbar Feed Unit, 123mm, 1000A, Canalis Series
  • RS Stock No. 214-788
  • Mfr. Part No. KSA1000ABDD4
Each
$11,065.54(exc. GST)
Schneider Electric Multi9 M9F MCB, 2P, 8A Curve D, 240V AC, 125V DC, 14 kA Breaking Capacity
  • RS Stock No. 288-1399
  • Mfr. Part No. M9F23208
Each
$458.81(exc. GST)
Residual Current Circuit Breaker
  • RS Stock No. 599-631
  • Mfr. Part No. 2CCL462110E0104
Each
$609.40(exc. GST)
SIBA 1.25A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3302
  • Mfr. Part No. 70-007-65/1.25A
Each (In a Pack of 10)
$0.694(exc. GST)
Siemens 450A Tag Fuse, 134mm, 1.1kV
  • RS Stock No. 608-363
  • Mfr. Part No. 3NB1136-1KK15
1 Pack of 3
$1,467.09(exc. GST)
Clipsal Electrical RCBO, 10A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type A-SI, MAX9 Range
  • RS Stock No. 282-2982
  • Mfr. Part No. MX9R3210S
Each
$231.26(exc. GST)
Littelfuse PC Board Non Resettable Fuse 375mA, 125V ac/dc
  • RS Stock No. 738-3087
  • Mfr. Part No. 0259.375T
Each
$11.81(exc. GST)
Eaton Fuse Holder Cap
  • RS Stock No. 228-975
  • Mfr. Part No. OPM-1038R
Each
$386.18(exc. GST)
ABB Copper Copper Bar for Use with TriLine
  • RS Stock No. 237-6599
  • Mfr. Part No. 2CPX061418R9999
1 Box of 1
$860.53(exc. GST)
Eaton, xEnergy MCCB 1P 100A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 537-5545
  • Mfr. Part No. 259093 NZMN2-A200
Each
$2,017.14(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 90A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-692
  • Mfr. Part No. 3VA5290-7ED41-0AA0
Each
$3,116.98(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3700
  • Mfr. Part No. 3VA2025-8HM36-0AA0
Each
$2,913.36(exc. GST)
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 60A
  • RS Stock No. 221-0897
  • Mfr. Part No. BDL36060LU
Each
$1,982.39(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-505
  • Mfr. Part No. 3VA6110-5JT31-0AA0
Each
$3,789.72(exc. GST)
Eaton Eaton Moeller Series IZMX/INX Locking Device for use with INX40…, IZMX40…
  • RS Stock No. 239-874
  • Mfr. Part No. 184224 IZMX-PLPC40-P-1
Each
$251.53(exc. GST)
Schneider Electric, PowerPact MCCB 1P 35A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 429-501
  • Mfr. Part No. BJF16035
Each
$1,497.51(exc. GST)
Phoenix Contact Surge Protector, 250V ac, DIN Rail Mount
  • RS Stock No. 801-6211
  • Mfr. Part No. 2950048
Each
$131.84(exc. GST)
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