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

34912 Products showing for Fuses & Circuit Breakers

55 of 999+
Temporarily out of stock
Phoenix Contact Surge Protector
  • RS Stock No. 212-8810
  • Mfr. Part No. 2880561
Each
$414.60(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 40A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 230-6650
  • Mfr. Part No. A9D61840
Each
$85.23(exc. GST)
In Stock
Eaton Moeller Thermal Magnetic Circuit Breaker - 3 Pole 440V ac Voltage Rating DIN Rail, 200A Current Rating
  • RS Stock No. 221-3489
  • Mfr. Part No. 269216 NZMB2-A200-NA
Each
$1,612.11(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 2.5A, 125V
  • RS Stock No. 738-2924
  • Mfr. Part No. 045102.5MRL
Each (In a Pack of 10)
$1.86(exc. GST)
Last RS stock
Panasonic Thermal Fuse +134°C 1 A, 250V ac
  • RS Stock No. 712-7301
  • Mfr. Part No. EYP1BF134
Each (In a Pack of 10)
$1.246(exc. GST)
Temporarily out of stock
Mersen 125A Rail Mount Fuse Holder for 22 x 58mm Fuse, N, 690V ac
  • RS Stock No. 768-3766
  • Mfr. Part No. K331094
Each
$66.03(exc. GST)
In Stock
Eaton 30A Cartridge Fuse, 12.7 x 29mm
  • RS Stock No. 417-357
  • Mfr. Part No. C3030
Each (In a Pack of 5)
$5.634(exc. GST)
In Stock
Mersen 25A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 230-3480
  • Mfr. Part No. E213099
Each (In a Pack of 10)
$5.974(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 150A, Breaking Capacity 65 kA, DIN Rail Mount
  • RS Stock No. 245-055
  • Mfr. Part No. NHGF36150U31XTW
Each
$2,551.35(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 10A Current Rating
  • RS Stock No. 210-2077
  • Mfr. Part No. 3120-N526-P7T1-W01D-10A-A04011011M
Each
$144.12(exc. GST)
Temporarily out of stock
Eaton 63A DIII Bottle Fuse, 500V
  • RS Stock No. 228-757
  • Mfr. Part No. 049823 22DDILE
1 Pack of 5
$24.74(exc. GST)
In Stock
RS PRO 6.3A Panel Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 563-784
Each
$9.32(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON Circuit breaker 3P 125A, DIN Rail Mount
  • RS Stock No. 224-7804
  • Mfr. Part No. 3VA1112-5ED36-0AA0
Each
$1,708.17(exc. GST)
Temporarily out of stock
Eaton 1 Phase Distribution Board, 10 Way, 125 A
  • RS Stock No. 124-2997
  • Mfr. Part No. EAM10 EAM10
Each
$266.29(exc. GST)
In Stock
Eaton 30A Bolt In Mount 6.3 x 32mm Fuse Block, 300V ac/dc
  • RS Stock No. 852-7231
  • Mfr. Part No. S-8301-1-R
Each
$22.52(exc. GST)
In Stock
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9187
  • Mfr. Part No. A9E18038
Each
$148.31(exc. GST)
Temporarily out of stock
Schneider Electric Square D QO363V MCB, 3P, 63A, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 244-930
  • Mfr. Part No. QO363VSC10
Each
$564.64(exc. GST)
In Stock
Littelfuse 30A Inline Fuse Holder for ATO Fuse, 32V dc
  • RS Stock No. 419-195
  • Mfr. Part No. 0FHA0002ZXJ
Each (In a Pack of 5)
$9.726(exc. GST)
In Stock
Mersen 6A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0597
  • Mfr. Part No. Y1014574 / FR10GR69V6
Each
$28.09(exc. GST)
In Stock
Schneider Electric TeSys Thermal Circuit Breaker - GB2 2 Pole 277V ac Voltage Rating DIN Rail Mount, 6A Current Rating
  • RS Stock No. 312-3831
  • Mfr. Part No. GB2DB12
Each
$243.41(exc. GST)
Results per page
1
55
1746

Related links