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

49836 Products showing for Fuses & Circuit Breakers

1 of 999+
TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 40A Current Rating
  • RS Stock No. 782-7953
  • Mfr. Part No. W23-X1A1G-40
Each
Kr. 391,91(exc. VAT)
RS PRO 6.3A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9822
Each (In a Pack of 10)
Kr. 6,457(exc. VAT)
Legrand 4115 RCD, 16A, 1+N Pole, 10mA, Type AC
  • RS Stock No. 863-7754
  • Mfr. Part No. 4 115 00
Each
Kr. 1 193,57(exc. VAT)
Eaton 800mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1464
  • Mfr. Part No. S506-800-R
Each (In a Pack of 10)
Kr. 1,652(exc. VAT)
RS PRO 6.3A Inline Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 277-3920
Each (In a Pack of 5)
Kr. 11,76(exc. VAT)
Mersen 2A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2892
  • Mfr. Part No. S216653
1 Box of 10
Kr. 473,73(exc. VAT)
SIBA 500mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3286
  • Mfr. Part No. 70-007-65/0.5A
Each (In a Pack of 10)
Kr. 6,787(exc. VAT)
Better World
ABB System Pro M Compact S200M MCB, 2P, 25A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 131-961
  • Mfr. Part No. 2CDS272001R0254 S202M-C25
Each
Kr. 1 403,86(exc. VAT)
Eaton 630mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1470
  • Mfr. Part No. S506-630-R
Each (In a Pack of 10)
Kr. 1,317(exc. VAT)
Eaton 25A D02 Bottle Fuse, 400V
  • RS Stock No. 228-736
  • Mfr. Part No. 25NZ02 FUSE-D02 25A T GL/GG 400VAC E18
1 Pack of 10
Kr. 149,29(exc. VAT)
Eaton 125A Bolted Tag Fuse, 18 x 56mm, 150 V dc, 240 V ac, 41mm
  • RS Stock No. 182-1771
  • Mfr. Part No. 125LET
Each
Kr. 225,31(exc. VAT)
Limitor Thermal Fuse +99°C 15 A, 250V ac
  • RS Stock No. 797-6064
  • Mfr. Part No. SF 094 R
Each (In a Pack of 10)
Kr. 11,913(exc. VAT)
Siemens Sentron Cover for use with MCB
  • RS Stock No. 216-3346
  • Mfr. Part No. 5ST3800
Each (In a Pack of 10)
Kr. 24,033(exc. VAT)
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)
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8530
Each
Kr. 853,69(exc. VAT)
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)
Better World
Schneider Electric Circuit Trip
  • RS Stock No. 219-9358
  • Mfr. Part No. LV429410
Each
Kr. 2 027,85(exc. VAT)
Schneider Electric Enclosure
  • RS Stock No. 466-0527
  • Mfr. Part No. 13441
Each
Kr. 637,44(exc. VAT)
Eaton 6.3A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 171-6782
  • Mfr. Part No. S505H-V-6-3-R
Each (In a Pack of 5)
Kr. 6,932(exc. VAT)
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)
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