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

101 of 999+
Eaton 10A British Standard Fuse, E1, 240V ac
  • RS Stock No. 418-726
  • Mfr. Part No. SSD10
Each (In a Pack of 5)
$43.796(exc. GST)
Bourns Thermal Fuse +85°C 50 A, 28V
  • RS Stock No. 258-6415
  • Mfr. Part No. SC85AAB
Each (In a Bag of 5000)
$1.011(exc. GST)
ABB AC Switch Disconnectors Accessories Earth & Neutral Terminal Bar for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9721
  • Mfr. Part No. 1SCA105718R1001
Each
$19.92(exc. GST)
Better World
Schneider Electric 125A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P, 690V ac
  • RS Stock No. 482-584
  • Mfr. Part No. DF223VC
Each
$457.62(exc. GST)
Littelfuse 250mA F Ceramic Cartridge Fuse, 3 x 8.4mm
  • RS Stock No. 738-3096P
  • Mfr. Part No. 0242.250UR
Each (Supplied on a Reel)
$8.70(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-586
  • Mfr. Part No. 3VA6560-6KT42-0AA0
Each
$15,585.01(exc. GST)
Siemens SENTRON Busbar
  • RS Stock No. 265-556
  • Mfr. Part No. 8US1215-5CS10
Each
$202.21(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4110
  • Mfr. Part No. 1SDA072218R1
Each
$15,228.75(exc. GST)
Mersen 100A Bolted Tag Fuse, B1C, 240 V dc, 415V ac, 111mm
  • RS Stock No. 178-1061
  • Mfr. Part No. Q226311 / BTC42V100M125
Each (In a Pack of 10)
$77.01(exc. GST)
Fluke 15A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 729-6740
  • Mfr. Part No. 892583
Each
$34.73(exc. GST)
Better World
Schneider Electric Acti 9 C120N MCB, 4P, 63A Curve C, 440V AC, 500V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3070
  • Mfr. Part No. A9N18371
Each
$524.93(exc. GST)
Schneider Electric Acti9 Acti9 Reflex MCB, 4P, 10A Curve B, 230V AC, 24V DC, 10 KA Breaking Capacity
  • RS Stock No. 205-168
  • Mfr. Part No. A9C61410
Each
$2,193.53(exc. GST)
Phoenix Contact TRABTECH Thermal Circuit Breaker - CB TM1 5A F1 P Single Pole, 5A Current Rating
  • RS Stock No. 768-0937
  • Mfr. Part No. 2800862
Each
$96.13(exc. GST)
Eaton 2.5A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-651
  • Mfr. Part No. LP-CC-2-1/2
1 Pack of 10
$1,063.50(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 32A Curve C, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2373
  • Mfr. Part No. A9F07332
Each
$339.13(exc. GST)
Eaton Fuse Holder Carrier
  • RS Stock No. 229-011
  • Mfr. Part No. CD33 FUSE CARRIER D3 E33 63A 500V
1 Pack of 30
$259.11(exc. GST)
Eaton 16A Grey Ultra Rapid Automotive Fuse, 400V ac With Indicator
  • RS Stock No. 181-8750
  • Mfr. Part No. 16NZ01R
Each
$13.54(exc. GST)
RS PRO 63A British Standard Fuse, A3, 550V ac, 73.5mm
  • RS Stock No. 521-2652
Each (In a Pack of 5)
$28.20(exc. GST)
Siemens 230V ac Circuit Trip Circuit Trip
  • RS Stock No. 622-0648
  • Mfr. Part No. 5TT4101-0
Each
$124.41(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-933
  • Mfr. Part No. 3VA6115-7JP31-0AA0
Each
$5,538.85(exc. GST)
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