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

51028 Products showing for Fuses & Circuit Breakers

17 of 999+
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 1+N, 1A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 191-6083
  • Mfr. Part No. A9P22601
Each
£48.90(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 1A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3275
  • Mfr. Part No. A9F54101
Each
£36.17(exc. VAT)
Eaton 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8368
  • Mfr. Part No. C10G1
1 Pack of 10
£10.78(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 16A Curve B, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3164
  • Mfr. Part No. A9F53116
Each
£24.45(exc. VAT)
ABB System Pro M Compact S200M MCB, 1P, 6A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4138
  • Mfr. Part No. 2CDS271001R0064 S201M-C6
Each
£19.86(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 16A Curve D, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3473
  • Mfr. Part No. A9F55116
Each
£25.86(exc. VAT)
Eaton 63A British Standard Fuse, A3, 660V ac, 73mm
  • RS Stock No. 415-222
  • Mfr. Part No. TIS63
Each
£18.49(exc. VAT)
Eaton Fuse Puller, Sizes 13/32 → 13/16in
  • RS Stock No. 849-5964
  • Mfr. Part No. FP-2
Each
£37.21(exc. VAT)
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4104
  • Mfr. Part No. 0297010.WXNV
Each (In a Pack of 10)
£0.191(exc. VAT)
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
£64.86(exc. VAT)
RS PRO RC Suppressor Circuit for use with Contactors
  • RS Stock No. 277-8523
Each
£12.00(exc. VAT)
RS PRO MCB, 1P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0199
Each
£9.17(exc. VAT)
RS PRO MCB, 2P, 2A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0182
Each
£21.28(exc. VAT)
ABB PS2 2 Phase Busbar, 400V
  • RS Stock No. 231-9636
  • Mfr. Part No. 2CDL220001R1612 PS2/12/16
1 Box of 1
£16.48(exc. VAT)
Eaton MEMShield MCB, 1P, 16A Curve C, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 124-3033
  • Mfr. Part No. EMCH116 EMCH116
Each
£24.15(exc. VAT)
Eaton 16A Bottle Fuse, 500V
  • RS Stock No. 228-729
  • Mfr. Part No. 16D27 FUSE D2 16A 500 VAC T GL/GG E27
1 Pack of 5
£4.37(exc. VAT)
Better World
ABB System Pro M Compact S200 MCB, 1P, 6A Curve D, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9453
  • Mfr. Part No. 2CDS251001R0061 S201-D6
Each
£17.22(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 25A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3300
  • Mfr. Part No. A9F54125
Each
£24.78(exc. VAT)
Better World
Schneider Electric Circuit Trip for use with Acti 9 Isobar A Type Distribution Boards, Acti9 Isobar B Type Distribution
  • RS Stock No. 134-6005
  • Mfr. Part No. SEA9TB1001
Each
£14.39(exc. VAT)
Europa EUC3P EUC MCB, 3P, 1A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6572
  • Mfr. Part No. EUC3P1C
Each
£22.40(exc. VAT)
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