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

46578 Products showing for Fuses & Circuit Breakers

157 / 999+
Temporarily out of stock
63A Fuse Holder for 109 x 35 x 159mm Fuse, 1P, 690V ac
  • RS Stock No. 263-108
  • Mfr. Part No. RS63P
1 Pack of 10
MYR2,320.50
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 4P, 16A Curve C, 400V AC, 12 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9383
  • Mfr. Part No. A9F94416
Each
MYR2,093.24
In Stock
Eaton xEffect MCB, 1P, 2A Curve B, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6955
  • Mfr. Part No. 278523 FAZ-B2/1
Each
MYR177.55
Temporarily out of stock
ABB RCBO, 10A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C
  • RS Stock No. 183-3705
  • Mfr. Part No. 2CSR245041R3104
Each
MYR974.28
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3372
  • Mfr. Part No. 1SDA071297R1
Each
MYR238,913.48
In Stock
Omron Electronic Circuit breaker 10A 24V S8V-C
  • RS Stock No. 215-4166
  • Mfr. Part No. S8V-CP0424S
Each
MYR874.52
In Stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-447
  • Mfr. Part No. A9D07220
Each
MYR3,352.35
In Stock
Weidmüller 25A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 286-0189
  • Mfr. Part No. 2827990000
1 Box of 5
MYR166.01
In Stock
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse
  • RS Stock No. 866-3362
  • Mfr. Part No. 0031.1351
Each
MYR117.06
In Stock
Eaton 160A Fuse Holder for NH00, NH000 Fuse, 1P, 440 V ac/dc, 690 V ac/dc
  • RS Stock No. 127-222
  • Mfr. Part No. 183032 XNH00-1-A160-BT
Each
MYR339.14
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 2A Curve K, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-028
  • Mfr. Part No. 2CDS271061R0277
Each
MYR787.21
In Stock
Schneider Electric RCBO, 13A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-135
  • Mfr. Part No. R9D01613
Each
MYR841.29
In Stock
Better World
Siemens SENTRON 5SL4 MCB, 1P, 10A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6453
  • Mfr. Part No. 5SL4110-8
Each
MYR167.94
In Stock
SIBA 1.6A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 418-9523
  • Mfr. Part No. 70-059-61/1.6A
Each (In a Pack of 10)
MYR1.777
Temporarily out of stock
ABB System Pro M Compact S200MUC MCB, 2P, 6A Curve K, 440V AC, 440V DC, 25 kA Breaking Capacity
  • RS Stock No. 231-9735
  • Mfr. Part No. 2CDS272061R0377 S202 MUC K 6A 10 KA
1 Box of 1
MYR1,344.04
Temporarily out of stock
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 181-4369
  • Mfr. Part No. 2CSA255103R1205 DS-ARC1 B20 A30
Each
MYR1,605.89
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 630mA, 250V ac
  • RS Stock No. 296-3284P
  • Mfr. Part No. 3720630000
Each (Supplied as a Tape)
MYR3.131
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 13A Curve K, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7958
  • Mfr. Part No. 2CDS251001R0447 S201-K13
Each
MYR213.03
In Stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 16A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7920
  • Mfr. Part No. 2CDS254001R0161 S204-D16
Each
MYR1,133.92
Temporarily out of stock
Hager BD RCCB, 63A, 3P Pole, 30mA, Type AC
  • RS Stock No. 602-052
  • Mfr. Part No. BD364
Each
MYR2,649.87
1
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