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

247 / 999+
Temporarily out of stock
ABB F200 RCCB, 63A, 4 Pole, 30mA, Type A, 230/400V ac
  • RS Stock No. 177-5059
  • Mfr. Part No. 2CSF204401R1630 F204 A-63/0,03 AP-R
Each
MYR1,124.07
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 157-090
  • Mfr. Part No. 3VA2116-5HM42-0AA0
Each
MYR9,835.66
In Stock
Eaton xEffect MCB, 4P, 40A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4687
  • Mfr. Part No. 239222 FAZ6-C40/4
Each
MYR974.19
In Stock
Eaton 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 171-6779
  • Mfr. Part No. S505H-V-3-15-R
Each (In a Pack of 5)
MYR3.184
Temporarily out of stock
Better World
ABB S200C MCB, 3P, 25A Curve C, 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-1650
  • Mfr. Part No. 2CDS253280R0254
Each
MYR366.23
In Stock
Bourns SMD Non Resettable Fuse 35A, 250V ac
  • RS Stock No. 186-0324
  • Mfr. Part No. SF-3812F3500T-2
Each (On a Tape of 10)
MYR19.681
In Stock
Eaton 3A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8213P
  • Mfr. Part No. PV-3A10F
Each (Supplied in a Box)
MYR59.62
In Stock
Deltron Earthing Strap
  • RS Stock No. 181-1267
  • Mfr. Part No. 4ELM6
Each
MYR15.93
In Stock
Socomec 50A Rail Mount Fuse Holder for 14 x 51mm Fuse, 2P, 690V
  • RS Stock No. 233-3327
  • Mfr. Part No. 57025002
Each (In a Pack of 3)
MYR195.567
In Stock
Schneider Electric RCBO, 10A Current Rating, 1P Poles, Type B, Acti9 Range
  • RS Stock No. 207-167
  • Mfr. Part No. A9D56810
Each
MYR1,004.96
In Stock
Schneider Electric Acti9 A9K MCB, 1P, 10A Curve B, 440V AC, 10000 A Breaking Capacity
  • RS Stock No. 140-009
  • Mfr. Part No. A9K11110
Each
MYR25.15
In Stock
RS PRO 8A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 420-202
Each (In a Pack of 10)
MYR12.964
Temporarily out of stock
Better World
Schneider Electric Multi 9 C60SP MCB, 3P, 20A Curve B, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2344
  • Mfr. Part No. M9F21320
Each
MYR617.48
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9642
  • Mfr. Part No. 3VA11103FD420AA0
Each
MYR2,584.90
Temporarily out of stock
Eaton xEffect MCB, 1+N, 40A Curve C
  • RS Stock No. 230-0978
  • Mfr. Part No. 239082 FAZ6-C40/1N
Each
MYR252.15
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA15/3VA25
  • RS Stock No. 269-7235
  • Mfr. Part No. 3VA9604-0JJ43
Each (In a Pack of 4)
MYR704.883
In Stock
Schneider Electric RCBO, 32A Current Rating, 1P Poles, Type B, Acti9 Range
  • RS Stock No. 245-144
  • Mfr. Part No. A9D56832
Each
MYR988.53
In Stock
Schurter Thermal Circuit Breaker - TA45 2 Pole 60 V dc, 240V ac Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 868-9030
  • Mfr. Part No. 4430.0022
Each
MYR110.93
Temporarily out of stock
Eaton 20A Tag Fuse, 14 x 68mm, 550V
  • RS Stock No. 260-740
  • Mfr. Part No. ESD20
1 Pack of 20
MYR1,875.96
In Stock
Siemens 250A Centred Tag Fuse, NH1, 500V ac
  • RS Stock No. 203-2010
  • Mfr. Part No. 3NA7144
Each (In a Pack of 3)
MYR84.60
1
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