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

49834 Products showing for Fuses & Circuit Breakers

2 of 999+
Temporarily out of stock
RS PRO 10A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 237-5259
Each
Kr. 29,93(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve C, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2317
  • Mfr. Part No. A9F07210
Each
Kr. 1 282,54(exc. VAT)
In Stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8530
Each
Kr. 853,69(exc. VAT)
In Stock
Littelfuse 10A Inline Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 878-3882
  • Mfr. Part No. 01500274Z
Each (In a Pack of 10)
Kr. 41,15(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 Cover for use with Comb Busbar
  • RS Stock No. 237-5595
  • Mfr. Part No. A9X21095
Each (In a Pack of 40)
Kr. 8,724(exc. VAT)
In Stock
Bourns 1.6A Resettable Fuse, 72V
  • RS Stock No. 647-8689
  • Mfr. Part No. MF-RX160/72-0
Each (In a Pack of 10)
Kr. 4,124(exc. VAT)
Being discontinued
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-431
Each (In a Pack of 10)
Kr. 3,782(exc. VAT)
In Stock
Phoenix Contact Electronic Circuit breaker 1A 24V PTCB, DIN Rail Mount Type E
  • RS Stock No. 201-6326
  • Mfr. Part No. 2909902
Each
Kr. 424,16(exc. VAT)
In Stock
Eaton Surge Protector, 110 → 230 V dc, 110 → 415V ac, DIN Rail Mount
  • RS Stock No. 847-3673
  • Mfr. Part No. 278519 FAZ-XAA-C-110-415VAC
Each
Kr. 725,62(exc. VAT)
In Stock
Phoenix Contact Electronic Circuit breaker 10A 24V CBM, 4 channels , DIN Rail Mount Type E
  • RS Stock No. 890-3796
  • Mfr. Part No. 2905743
Each
Kr. 3 172,95(exc. VAT)
In Stock
Eaton xPole MCB, 2P, 20A Curve C, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 864-4361
  • Mfr. Part No. 242406 PLSM-C20/2-MW
Each
Kr. 785,24(exc. VAT)
In Stock
Eaton 63A Slow-Blow Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 228-854
  • Mfr. Part No. C22M63 CYLINDRICAL FUSE 22 x 58 63A AM 690V AC
1 Pack of 10
Kr. 410,24(exc. VAT)
In Stock
Better World
Schneider Electric Circuit Trip
  • RS Stock No. 219-9358
  • Mfr. Part No. LV429410
Each
Kr. 2 027,85(exc. VAT)
In Stock
Littelfuse Inline Fuse Holder for ATO Fuse, 80V dc
  • RS Stock No. 787-4340
  • Mfr. Part No. 178.6152.0001
Each
Kr. 28,03(exc. VAT)
In Stock
ETI 16A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-664
  • Mfr. Part No. 2312405
Each (In a Pack of 5)
Kr. 14,328(exc. VAT)
In Stock
Siemens 16A Bottle Fuse Holder, 400V ac
  • RS Stock No. 622-1168
  • Mfr. Part No. 5SH4116
Each (In a Pack of 10)
Kr. 12,089(exc. VAT)
In Stock
Schurter 4A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-8109
  • Mfr. Part No. 0034.3123
Each (In a Pack of 10)
Kr. 5,022(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - TCP 0.5A Single Pole 65 V dc, 250V ac Voltage Rating, 500mA Current Rating
  • RS Stock No. 170-3785
  • Mfr. Part No. 0712152
Each (In a Box of 20)
Kr. 143,442(exc. VAT)
In Stock
RS PRO 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5991
Each (In a Pack of 10)
Kr. 4,065(exc. VAT)
In Stock
Littelfuse 1A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 769-3757
  • Mfr. Part No. 0FLQ001.T
Each
Kr. 402,12(exc. VAT)
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