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

34958 Products showing for Fuses & Circuit Breakers

15 of 999+
Eaton 15A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8239P
  • Mfr. Part No. PV-15A10F
Each (Supplied in a Bag)
$68.70(exc. GST)
SIBA 6.3A F Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3420
  • Mfr. Part No. 70-010-04/6.3A
Each (In a Pack of 5)
$9.724(exc. GST)
RS PRO 7.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3433
Each (In a Pack of 10)
$0.534(exc. GST)
Littelfuse 100A Grey, White CF Car Fuse, 58V dc
  • RS Stock No. 337-7937
  • Mfr. Part No. 155.0892.6101
Each
$22.91(exc. GST)
ABB 220 → 240 V ac, 220 → 250V dc Shunt Trip Shunt trip for use with Tmax XT1, Tmax XT2, Tmax XT3, Tmax
  • RS Stock No. 831-9197
  • Mfr. Part No. 1SDA066325R1
Each
$264.61(exc. GST)
Wickmann PC Board Non Resettable Fuse, Radial 3.15A, 250V ac
  • RS Stock No. 226-0513
  • Mfr. Part No. 3701315000
Each (In a Pack of 10)
$1.674(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 2P, 32A Curve B, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7576
  • Mfr. Part No. 2CDS252001R0325 S202-B32
Each
$80.02(exc. GST)
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 80A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3064
  • Mfr. Part No. A9N18365
Each
$329.50(exc. GST)
Schneider Electric RCBO, 20A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 230-6647
  • Mfr. Part No. A9D61820
Each
$90.77(exc. GST)
SIBA 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3220
  • Mfr. Part No. 70-007-33/1A
Each (In a Pack of 10)
$1.232(exc. GST)
Lovato 32A Fuse Holder for 10 x 38mm Fuse, 3P, 690V ac
  • RS Stock No. 188-1616
  • Mfr. Part No. FB01B3P
Each
$14.22(exc. GST)
ETI 20A D02 Neozed Fuse, E18 Thread Size, gG, 400V ac
  • RS Stock No. 415-985
  • Mfr. Part No. 2212001
Each (In a Pack of 5)
$2.932(exc. GST)
Eaton Eaton Distribution Parts Busbar
  • RS Stock No. 254-431
  • Mfr. Part No. 256704 ZSD-SA/12X5/CU/1P/B3/2
Each
$42.93(exc. GST)
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8543
Each
$459.86(exc. GST)
TE Connectivity Thermal Circuit Breaker - W28 Single Pole 32 V dc, 250V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 782-6597
  • Mfr. Part No. W28-XQ1A-4
Each
$12.33(exc. GST)
RS PRO 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3509
Each (In a Pack of 10)
$0.481(exc. GST)
RS PRO 200mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-479
Each (In a Pack of 10)
$1.483(exc. GST)
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 125A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3076
  • Mfr. Part No. A9N18369
Each
$365.82(exc. GST)
Eaton 32A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 852-7405
  • Mfr. Part No. FWC-32A10F
Each
$110.73(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 40A Curve C, 100 → 133V AC, 12 → 48V DC, 6 kA Breaking Capacity
  • RS Stock No. 790-8872
  • Mfr. Part No. A9F44140
Each
$22.74(exc. GST)
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