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

47 of 999+
In Stock
RS PRO Brass Earth Clamp
  • RS Stock No. 426-3132
Each (In a Pack of 5)
$16.272(exc. VAT)
In Stock
ABB SN201 MCB, 1+N, 16A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 186-3489
  • Mfr. Part No. 2CSS255102R0164 SN201 C16-L
Each
$77.74(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 63A Curve C, 400V AC, 12V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7788
  • Mfr. Part No. 2CDS253001R0634 S203-C63
Each
$171.67(exc. VAT)
In Stock
ABB PS1 3 Phase Busbar, 690V
  • RS Stock No. 445-0566
  • Mfr. Part No. 1SAM201906R1112 PS1-2-1-65
Each
$32.54(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY6 MCB, 1P, 16A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 489-6596
  • Mfr. Part No. 5SY6116-7
Each
$51.33(exc. VAT)
In Stock
Mersen 20A F GMG Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4411
  • Mfr. Part No. ATMR20
Each
$94.90(exc. VAT)
Temporarily out of stock
Siemens 5SM26 RCCB, 63A, 2 Pole, 300mA, Type AC, 230V
  • RS Stock No. 328-394
  • Mfr. Part No. 5SM2626-2
Each
$709.89(exc. VAT)
In Stock
Eaton 20A Rail Mount Fuse Holder for E1 Fuse, 1P, 550V ac
  • RS Stock No. 221-566
  • Mfr. Part No. SC20HWH
Each
$143.89(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 895-1681
  • Mfr. Part No. 38212000410
Each (In a Pack of 10)
$1.511(exc. VAT)
In Stock
Mersen 500mA T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4310
  • Mfr. Part No. ATDR1/2
Each
$75.67(exc. VAT)
Temporarily out of stock
Mersen 15A Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 715-8991
  • Mfr. Part No. DCT15-2
Each
$61.42(exc. VAT)
In Stock
RS PRO 16A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9311
Each (In a Pack of 10)
$3.623(exc. VAT)
Limited stock
ABB SN201 MCB, 1+N, 20A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 186-3472
  • Mfr. Part No. 2CSS245102R0204
Each
$32.19(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 2A Curve K, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7970
  • Mfr. Part No. 2CDS252001R0277 S202-K2
Each
$187.54(exc. VAT)
In Stock
Phoenix Contact Mounting Base for use with CB Series
  • RS Stock No. 768-1139
  • Mfr. Part No. 2800929
Each
$40.98(exc. VAT)
In Stock
Better World
Schneider Electric Busbar Trunking Fixing Bracket, Canalis KS Series
  • RS Stock No. 219-8953
  • Mfr. Part No. KSB400ZF1
Each (In a Pack of 10)
$42.282(exc. VAT)
Temporarily out of stock
Eaton 16A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 413-305
  • Mfr. Part No. NITD16
Each (In a Pack of 5)
$41.072(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 3130 3 Pole 240V Voltage Rating Snap In, 12A Current Rating
  • RS Stock No. 729-2811
  • Mfr. Part No. 3130-F130-P7T1-W02Q-12A
Each
$151.12(exc. VAT)
In Stock
Eaton 100A British Standard Fuse, A4, 500V ac, 94mm
  • RS Stock No. 413-399
  • Mfr. Part No. CEO100
Each
$188.50(exc. VAT)
In Stock
Schurter Thermal Circuit Breaker - T11 Single Pole 240V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 284-5877
  • Mfr. Part No. 4400.0003
Each
$30.27(exc. VAT)
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