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
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

97 / 999+
Schneider Electric Multifix Cover for use with Circuit Breaker
  • RS Stock No. 275-8759
  • Mfr. Part No. ENN12811
Each
MYR48.30
Eaton 100mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9434
  • Mfr. Part No. S501-100-R
1 Bag of 1000
MYR8,047.15
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 250V ac Voltage Rating DIN Rail, 5A Current Rating
  • RS Stock No. 135-899
  • Mfr. Part No. 0914497
1 Pack of 6
MYR2,201.42
Limitor Thermal Fuse +229°C 15 A, 250V ac
  • RS Stock No. 797-6030
  • Mfr. Part No. SF 229 R
Each (In a Pack of 10)
MYR2.595
RS PRO 800mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-554
Each (In a Pack of 10)
MYR1.636
Schurter 30A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 173-7971
  • Mfr. Part No. 0090.0030
Each (In a Box of 10)
MYR68.60
ABB Residual Current Release for use with Four-Pole XT1
  • RS Stock No. 192-0909
  • Mfr. Part No. 1SDA067124R1
Each
MYR4,996.48
RS PRO 3.15A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-491
Each (In a Pack of 10)
MYR1.421
Eaton 1.6A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9419
  • Mfr. Part No. S506-1.6-R
1 Bag of 1000
MYR816.95
WAGO 32A Fuse Holder for 10 x 38mm Fuse, 1P, 24V dc
  • RS Stock No. 279-1650
  • Mfr. Part No. 811-314
Each
MYR143.63
Better World
Schneider Electric Acti 9 C60-PV MCB, 2P, 25A Curve B, 800V DC, 3 kA Breaking Capacity
  • RS Stock No. 776-3626
  • Mfr. Part No. A9N61660
Each
MYR794.12
Eaton IZMX/INX Cassette for use with INX40…3-…W, IZMX40…3-…W
  • RS Stock No. 132-341
  • Mfr. Part No. 183953 IZMX-CAS403-4000-SEC-1
Each
MYR29,858.34
ABB System Pro M Compact S200M MCB, 3P, 25A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-931
  • Mfr. Part No. 2CDS273001R0517
Each
MYR2,264.47
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 25A Current Rating
  • RS Stock No. 175-1505
  • Mfr. Part No. GV4P25N
Each
MYR6,229.82
Eaton 25A F Melamine Cartridge Fuse, 14 x 38mm
  • RS Stock No. 848-4099
  • Mfr. Part No. JJS-25
Each
MYR225.60
Eaton 125A Neutral Link, 22mm x 58mm
  • RS Stock No. 703-8526
  • Mfr. Part No. C22NL
Each (In a Pack of 10)
MYR27.309
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4101P
  • Mfr. Part No. 0287010.PXCN
Each (Supplied in a Bag)
MYR1.589
Eaton 20A NH Fuse, NH000, 690V ac
  • RS Stock No. 181-8718
  • Mfr. Part No. 20NHG000B-690
Each
MYR31.54
Siemens ALPHA Busbar
  • RS Stock No. 116-454
  • Mfr. Part No. 8GF5771
Each
MYR605.70
WJ Furse Copper Earth Bar L. 725mm x W. 90mm x H. 96mm 10 Ways
  • RS Stock No. 124-2502
  • Mfr. Part No. 7TCA083670R0647 LK243-10
Each
MYR1,770.88
1
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