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

3 of 999+
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve B, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7560
  • Mfr. Part No. 2CDS252001R0165 S202-B16
Each
€51.00(exc. VAT)
In Stock
RS PRO 1.25A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 611-9093
Each (In a Pack of 10)
€1.114(exc. VAT)
In Stock
Better World
Schneider Electric Busbar Trunking Hook, Canalis Series
  • RS Stock No. 153-113
  • Mfr. Part No. KBB40ZFC
1 Pack of 10
€29.50(exc. VAT)
In Stock
RS PRO 10A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 237-5259
Each
€2.62(exc. VAT)
In Stock
Contactum RCBO, 20A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type B, CCPBR Range
  • RS Stock No. 240-6385
  • Mfr. Part No. CCPBR0620AB
Each
€28.44(exc. VAT)
In Stock
RS PRO 30A Rail Mount Fuse Holder for 5 x 20mm Fuse, 1P, 500V
  • RS Stock No. 242-0497
1 Bag of 10
€36.50(exc. VAT)
In Stock
Eaton 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8392
  • Mfr. Part No. C10G20
Each (In a Pack of 10)
€1.321(exc. VAT)
In Stock
RS PRO Earthing Strap Metal 12 → 32mm Diameter
  • RS Stock No. 390-2448
1 Pack of 10
€20.85(exc. VAT)
In Stock
ABB F200 RCCB, 40A, 4 Pole, 300mA, Type A, 230/400V ac
  • RS Stock No. 488-6280
  • Mfr. Part No. 2CSF204101R3400 - F204A-40/0.3
Each
€125.38(exc. VAT)
In Stock
Schneider Electric TeSys Deca Auxiliary Contact for use with GV2 And GV3
  • RS Stock No. 212-239
  • Mfr. Part No. GVAE1TQ
Each
€10.35(exc. VAT)
In Stock
Siemens ALPHA Distribution Board, 8 Way
  • RS Stock No. 211-6074
  • Mfr. Part No. 8GB1371-1
Each
€56.53(exc. VAT)
In Stock
ABB 4 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Each
€27.82(exc. VAT)
In Stock
ABB 8 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
€31.14(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
ABB 12 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 183-3758
  • Mfr. Part No. 1SLM006500A2212
Each
€42.02(exc. VAT)
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
RS PRO 2A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-033
Each (In a Pack of 10)
€1.263(exc. VAT)
In Stock
RS PRO MCB, 1P, 16A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0197
Each
€10.28(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 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)
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