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

50989 Products showing for Fuses & Circuit Breakers

5 of 999+
In Stock
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 6A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8599
  • Mfr. Part No. EZ9F16106
Each
€6.44(exc. VAT)
In Stock
Eaton 2A Grey Blade Car Fuse, 32V dc
  • RS Stock No. 849-5620
  • Mfr. Part No. ATC-2
Each
€1.39(exc. VAT)
In Stock
Siemens SENTRON 1 Phase Busbar, 27mm Pitch
  • RS Stock No. 187-5179
  • Mfr. Part No. 5ST3650
Each
€19.97(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 20A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1265
  • Mfr. Part No. 5SY4120-8
Each
€23.72(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 32A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9633
  • Mfr. Part No. 2CDS253001R0321 S203-D32
Each
€77.83(exc. VAT)
In Stock
Schneider Electric Enclosure
  • RS Stock No. 466-0527
  • Mfr. Part No. 13441
Each
€74.93(exc. VAT)
In Stock
RS PRO 30A Inline Fuse Holder for ATO/ATC 19x18.6mm Fuse, 32V dc
  • RS Stock No. 284-6489
Each (In a Pack of 5)
€4.64(exc. VAT)
In Stock
RS PRO 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5963
Each (In a Pack of 10)
€0.391(exc. VAT)
In Stock
Eaton RCD, 6A, 2 Pole, 30mA, Type B
  • RS Stock No. 922-8695
  • Mfr. Part No. 236012 PKNM-6/1N/B/003-A-MW
Each
€224.89(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
€44.49(exc. VAT)
In Stock
RS PRO Earthing Kit
  • RS Stock No. 528-983
Each
€23.53(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve B, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3199
  • Mfr. Part No. A9F53210
Each
€58.10(exc. VAT)
In Stock
Eaton 1A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 228-660
  • Mfr. Part No. C10G1 CYLINDRICAL FUSE 10 x 38 1A GG 500V AC
1 Pack of 10
€9.37(exc. VAT)
In Stock
Eaton Eaton Moeller xPole 3 Phase Busbar, 415V
  • RS Stock No. 259-107
  • Mfr. Part No. 291471 EVG-16/3PHAS/9MODUL
Each
€12.90(exc. VAT)
In Stock
Europa EUR1 RCCB, 63A, 4 Pole, 100mA, Type A, 230V ac
  • RS Stock No. 210-4755
  • Mfr. Part No. EUR163.100/4A
Each
€78.51(exc. VAT)
In Stock
Eaton 32A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 852-7405
  • Mfr. Part No. FWC-32A10F
Each
€42.06(exc. VAT)
Limited stock
Better World
Schneider Electric Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P
  • RS Stock No. 188-4687
  • Mfr. Part No. DF101
Each
€6.67(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 2 5700 Single Pole 250V Voltage Rating Panel Mount, 20A Current Rating
  • RS Stock No. 729-2773
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-20A
Each
€27.60(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 4A, 250V ac
  • RS Stock No. 767-5222
Each (In a Pack of 10)
€0.412(exc. VAT)
In Stock
Littelfuse 1A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 738-2788
  • Mfr. Part No. 0218001.MXP
Each (In a Pack of 10)
€1.096(exc. VAT)
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