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

34933 Products showing for Fuses & Circuit Breakers

23 of 999+
Littelfuse 11A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3197P
  • Mfr. Part No. 0FLU011.T
Each (Supplied in a Bag)
$65.14(exc. GST)
SIBA 250mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3270
  • Mfr. Part No. 70-007-65/0.25A
Each (In a Pack of 10)
$0.17(exc. GST)
ABB DS201 RCCB, 40A, 2 Pole, 30mA, Type C, 240V
  • RS Stock No. 289-1626
  • Mfr. Part No. 2CSR255480R1404
Each
$419.03(exc. GST)
Eaton 50A British Standard Fuse, LET, 150 V dc, 240V ac, 41.8mm
  • RS Stock No. 156-8822
  • Mfr. Part No. 50LET
Each
$44.61(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 1A, 125V ac/dc
  • RS Stock No. 541-3265P
  • Mfr. Part No. 251001.NRT1L
Each (Supplied in a Bag)
$2.025(exc. GST)
RS PRO 5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3108
Each (In a Pack of 10)
$0.656(exc. GST)
Better World
Schneider Electric Acti 9 A9F9 MCB, 1P, 3A, Type Z, 230V AC, 72V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2483
  • Mfr. Part No. A9F92103
Each
$100.94(exc. GST)
Schneider Electric Multi9 M9F MCB, 1P, 15A, Type Z, 240V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 288-1401
  • Mfr. Part No. M9F44115
Each
$254.40(exc. GST)
RS PRO 16A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9298
Each (In a Pack of 10)
$2.909(exc. GST)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 273-0860
  • Mfr. Part No. 1658-G21-02-P10-10A
Each
$14.82(exc. GST)
RS PRO 10A FF Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 420-145
Each (In a Pack of 10)
$4.051(exc. GST)
Littelfuse 10A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0079
  • Mfr. Part No. 0314010.HXP
Each (In a Pack of 10)
$1.87(exc. GST)
SIBA 6.3A F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8216
  • Mfr. Part No. 171530.6,3
Each (In a Pack of 10)
$5.513(exc. GST)
Finder 6A Rail Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 776-1544
  • Mfr. Part No. 093.63
Each
$5.62(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 1.5A, 125V ac/dc
  • RS Stock No. 541-3271P
  • Mfr. Part No. 025101.5HAT1L
Each (Supplied in a Bag)
$1.919(exc. GST)
Littelfuse 5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4707
  • Mfr. Part No. 0215005.MXP
Each (In a Pack of 10)
$3.227(exc. GST)
Schurter PC Board Non Resettable Fuse, Radial 250mA, 250V ac
  • RS Stock No. 284-5041
  • Mfr. Part No. 0034.6008
Each (In a Pack of 10)
$1.365(exc. GST)
RS PRO 200mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-479
Each (In a Pack of 10)
$1.631(exc. GST)
Littelfuse 100A Blue BF1 Car Fuse, 32V dc
  • RS Stock No. 431-6747
  • Mfr. Part No. 153.5631.6101
Each (In a Pack of 5)
$7.658(exc. GST)
LIAISON INTER.DIF SUR PH/N
  • RS Stock No. 250-4761
  • Mfr. Part No. 2CDL320011R1004
Each
$19.44(exc. GST)
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