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

46604 Products showing for Fuses & Circuit Breakers

17 / 999+
Schneider Electric 250A Neutral Link for BS Fuses, 6.5mm x 38mm
  • RS Stock No. 417-307
  • Mfr. Part No. NL250
Each
MYR186.65
Eaton 50A D02 Bottle Fuse, E18 Thread Size, gG, 400V ac
  • RS Stock No. 181-8566
  • Mfr. Part No. 50NZ02
Each (In a Box of 10)
MYR18.224
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1, NZM1
  • RS Stock No. 240-428
  • Mfr. Part No. 100675 NZM1-XTVDV-0-NA
Each
MYR595.90
Eaton 110 → 200A Ferrule Fuse Block, 600V
  • RS Stock No. 182-1341
  • Mfr. Part No. JM60200-3CR
Each
MYR4,587.99
RS PRO 2A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8140
Each (In a Pack of 20)
MYR3.872
Better World
Schneider Electric Spreader for use with Compact Nsx 400/630, Easypact Cvs 400/630
  • RS Stock No. 221-1235
  • Mfr. Part No. LV432492
Each
MYR802.28
Schurter 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7106
  • Mfr. Part No. 70103440
Each (In a Pack of 10)
MYR10.306
Better World
Schneider Electric Acti9 Cover for use with Comb Busbar
  • RS Stock No. 237-5596
  • Mfr. Part No. A9X21096
Each (In a Pack of 12)
MYR15.647
Schurter SMD Non Resettable Fuse 2A, 125V ac/dc
  • RS Stock No. 173-7994
  • Mfr. Part No. 3404.0116.22
Each (On a Reel of 750)
MYR2.505
Better World
Schneider Electric, ComPacT NSX MCCB 3P 100A, Breaking Capacity 90 kA, Fixed Mount
  • RS Stock No. 254-6300
  • Mfr. Part No. C10N3TM100
Each
MYR3,189.95
ABB FH200 RCCB, 25A, 4 Pole, 30mA, Type AC
  • RS Stock No. 540-1644
  • Mfr. Part No. 2CSF204006R1250 FH204 AC-25/0,03
Each
MYR401.35
Limitor Thermal Fuse +133°C 15 A, 250V ac
  • RS Stock No. 797-6055
  • Mfr. Part No. SF 129 R
Each (In a Pack of 10)
MYR5.405
SIBA 500A White Automotive Car Fuse, 80V dc
  • RS Stock No. 161-1839
  • Mfr. Part No. 9005805.500
Each
MYR43.39
ABB Tmax XT Padlock Device for use with Tmax XT
  • RS Stock No. 237-6097
  • Mfr. Part No. 1SDA066590R1 PLL XT2-XT4
Each
MYR187.08
Eaton 125A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 181-8876
  • Mfr. Part No. C22M125
Each
MYR15.20
Eaton 4A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1521
Each (In a Pack of 10)
MYR1.366
ABB 4 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Each
MYR131.30
Hinode Electric Co Ltd 80A Bolted Tag Fuse, 61mm
  • RS Stock No. 103-4249
  • Mfr. Part No. 660GH-080
Each (In a Pack of 5)
MYR100.178
Eaton 500A Bolted Tag Fuse, C2, 450 V dc, 660V ac, 133mm
  • RS Stock No. 182-1440
  • Mfr. Part No. TTM500
Each
MYR1,254.22
Contactum MCB, 1P, 16A Curve B, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 184-9030
  • Mfr. Part No. CPB1016B
Each
MYR32.20
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