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

33476 Products showing for Fuses & Circuit Breakers

15 of 999+
In Stock
Littelfuse Phosphor Bronze PCB Mount Fuse Clip for 5 x 20mm Cartridge Fuse
  • RS Stock No. 769-0168
  • Mfr. Part No. 52000001009
Each (In a Pack of 50)
PHP9.083(exc. VAT)
Temporarily out of stock
Mersen Surge Protector
  • RS Stock No. 179-3068
  • Mfr. Part No. 83230127 / STPT23-20K275V-4PG-LFM
Each
PHP13,498.49(exc. VAT)
New product - Preorder today
Schneider Electric R9R RCCB, 40A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-662
  • Mfr. Part No. R9R22240
Each
PHP7,667.55(exc. VAT)
In Stock
ABB RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 136-7792
  • Mfr. Part No. 2CSR275051R1065 DSE201 M B6 AC30 - N Blue
Each
PHP10,114.65(exc. VAT)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.6kV, DIN Rail Mount
  • RS Stock No. 120-853
  • Mfr. Part No. 167622 SPCT2-335-3+NPE
Each
PHP32,290.54(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 20A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3307
  • Mfr. Part No. A9F54120
Each
PHP1,621.75(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 60A
  • RS Stock No. 221-0897
  • Mfr. Part No. BDL36060LU
Each
PHP27,274.42(exc. VAT)
In Stock
ABB Circuit Breaker Accessory
  • RS Stock No. 225-5865
  • Mfr. Part No. 1SDA060399R1 MOE 380VAC T6
Each
PHP70,974.72(exc. VAT)
In Stock
Siemens 35A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 203-2026
  • Mfr. Part No. 3NA7814
Each (In a Pack of 3)
PHP419.30(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 7A, 125V ac/dc
  • RS Stock No. 541-3316
  • Mfr. Part No. 0251007.HAT1L
Each (In a Pack of 10)
PHP49.896(exc. VAT)
Being discontinued
RS PRO 3A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6048
Each (In a Pack of 10)
PHP25.312(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 2P, 63A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-077
  • Mfr. Part No. 2CCS862001R0597
Each
PHP20,569.39(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 90A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 357-935
  • Mfr. Part No. BDL36090LU
Each
PHP56,256.59(exc. VAT)
In Stock
WJ Furse Lightning Earth Inspection Pit W. 300mm x 300mm H. 158mm 5000kg
  • RS Stock No. 124-2510
  • Mfr. Part No. 7TCA083320R0011 PT205
Each
PHP2,879.20(exc. VAT)
In Stock
Mersen 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-6978
  • Mfr. Part No. K215128
Each (In a Pack of 10)
PHP177.115(exc. VAT)
In Stock
Eaton 6A DII Bottle Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 181-8933
  • Mfr. Part No. 6D27Q
Each
PHP180.12(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 260-7559
  • Mfr. Part No. C11E3TM050B
Each
PHP22,926.17(exc. VAT)
In Stock
Schurter 1.6A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 789-7839
  • Mfr. Part No. 0034.1518
Each (In a Bag of 10)
PHP15.856(exc. VAT)
In Stock
ABB F200 RCCB, 40A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 231-9901
  • Mfr. Part No. 2CSF204101R1400 F204 A-40/0,03
Each
PHP14,979.63(exc. VAT)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 200A, Fixed Mount
  • RS Stock No. 254-6355
  • Mfr. Part No. C25F3TM200
Each
PHP126,326.16(exc. VAT)
Results per page
1
15
1674

Related links