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

4 of 999+
ABB 18 Way No Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 225-5902
  • Mfr. Part No. 1SL1213A00
Each
Kr. 622,78(exc. VAT)
RS PRO 2.5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 721-1591
Each (In a Pack of 10)
Kr. 13,009(exc. VAT)
ABB System Pro M Compact S200 MCB, 3P, 4A, Type Z, 400V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-264
  • Mfr. Part No. 2CDS253001R0338
Each
Kr. 1 477,58(exc. VAT)
Better World
ABB Compact Home SH200 MCB, 2P, 16A Curve C, 400V AC, 400V DC, 6 kA Breaking Capacity
  • RS Stock No. 231-9656
  • Mfr. Part No. 2CDS212001R0164 SH202-C 16
1 Box of 1
Kr. 667,61(exc. VAT)
Limitor Thermal Fuse +121°C 10 A/15 A, 250V ac
  • RS Stock No. 797-6042
  • Mfr. Part No. SF 119 R
Each (In a Pack of 10)
Kr. 9,521(exc. VAT)
SIBA 1.25A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3302
  • Mfr. Part No. 70-007-65/1.25A
Each (In a Pack of 10)
Kr. 6,61(exc. VAT)
Rockwell Automation FB100 Busbar, 1000V
  • RS Stock No. 282-2333
  • Mfr. Part No. FB100288Q1
Each (In a Pack of 4)
Kr. 249,98(exc. VAT)
Wurth Elektronik 6.3A Fuse Holder for 5 x 20 mm, 6.3 x 32 mm Fuse, 250V ac
  • RS Stock No. 283-6467
  • Mfr. Part No. 696317001012
Each
Kr. 31,47(exc. VAT)
Schurter 500mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7847
  • Mfr. Part No. 0001.1001
Each (In a Pack of 10)
Kr. 14,838(exc. VAT)
Phoenix Contact Busbar
  • RS Stock No. 290-1258
  • Mfr. Part No. 0402174
Each
Kr. 174,24(exc. VAT)
RS PRO 10A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 237-5259
Each
Kr. 29,93(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Axial 12A, 32V ac/dc
  • RS Stock No. 764-9504
Each (In a Pack of 10)
Kr. 5,444(exc. VAT)
Littelfuse SMD Non Resettable Fuse 1.5A, 125V
  • RS Stock No. 738-2876
  • Mfr. Part No. 015401.5DRT
Each (In a Pack of 10)
Kr. 40,681(exc. VAT)
RS PRO 80A Slotted Tag Fuse, 17.4 x 42mm, 240V, 42mm
  • RS Stock No. 188-4648
Each
Kr. 366,58(exc. VAT)
Siemens 3RV1935 Busbar for use with Circuit Breaker 3RV2
  • RS Stock No. 272-0032
  • Mfr. Part No. 3RV19353C
Each
Kr. 526,88(exc. VAT)
Mersen 100A British Standard Fuse, 17 x 27mm, 250V ac, 42.8mm
  • RS Stock No. 238-3931
  • Mfr. Part No. Y085558
Each
Kr. 342,70(exc. VAT)
Weidmuller Electronic Circuit breaker 25mA 24V AMG ELM, 1 channels , DIN Rail Mount
  • RS Stock No. 179-2997
  • Mfr. Part No. 2080490000
Each
Kr. 473,73(exc. VAT)
Littelfuse SMD Non Resettable Fuse 2A, 125V ac/dc
  • RS Stock No. 541-3631
  • Mfr. Part No. 0452002.MRL
Each (In a Pack of 10)
Kr. 23,372(exc. VAT)
Schurter 4A M Glass Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 865-7405
  • Mfr. Part No. 0034.2522
Each (In a Pack of 10)
Kr. 9,186(exc. VAT)
Better World
Schneider Electric Linergy Terminal Block for use with GV1G
  • RS Stock No. 400-1984
  • Mfr. Part No. GV1G09
Each
Kr. 159,47(exc. VAT)
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