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

306 / 999+
Temporarily out of stock
Schneider Electric Altivar Process Modular Busbar, 380 → 480V
  • RS Stock No. 578-366
  • Mfr. Part No. VW3A98CTM03
Each
MYR3,282.43
In Stock
Better World
Schneider Electric 50A Rail Mount Fuse Holder for 14 x 51mm Fuse, 1P, 690V ac
  • RS Stock No. 482-695
  • Mfr. Part No. DF141V
Each
MYR179.32
In Stock
Eaton 6A British Standard Fuse, CT, 690 V ac, 500V dc, 64.3mm
  • RS Stock No. 156-8866
  • Mfr. Part No. 6CT
Each (In a Pack of 5)
MYR28.298
In Stock
ABB System Pro M Compact SU200M MCB, 1P, 4A Curve C, 277V AC, 277V DC, 15 kA Breaking Capacity
  • RS Stock No. 231-9709
  • Mfr. Part No. 2CDS271337R0044 SU201M-C4
1 Box of 1
MYR231.57
In Stock
RS PRO 100A Bolted Tag Fuse, 350 V dc, 690V ac, 63.5mm
  • RS Stock No. 221-3646
1 Bag of 10
MYR967.85
In Stock
Eaton RCD, 40A, 2 Pole, 300mA, Type S
  • RS Stock No. 922-8686
  • Mfr. Part No. 235461 PFIM-40/2/03-S-MW
Each
MYR1,044.37
Temporarily out of stock
ABB RCBO, 63A Current Rating, 3P Poles, Type B
  • RS Stock No. 237-5187
  • Mfr. Part No. 2CSR273101R1635
Each
MYR2,270.20
In Stock
Bourns 350A Tag Fuse, 38mm, 800V ac/dc, 24.1mm
  • RS Stock No. 254-4153
  • Mfr. Part No. PF-FB2-350
Each
MYR826.93
Temporarily out of stock
ABB F200 RCCB, 25A, 4 Pole, 300mA, Type A, 230V ac
  • RS Stock No. 225-6131
  • Mfr. Part No. 2CSF204101R3250 F204 A-25/0,3
Each
MYR974.50
Unavailable
Schneider Electric, Compact MCCB Molded Case Circuit Breaker 80 A, Breaking Capacity 50 kA, Screw
  • RS Stock No. 178-7739
  • Mfr. Part No. LV426456
Each
MYR1,805.95
In Stock
Siemens SENTRON 2 Phase Busbar
  • RS Stock No. 187-5200
  • Mfr. Part No. 5ST3736
Each
MYR78.48
In Stock
Siemens SENTRON 1 Phase Busbar, 27mm Pitch
  • RS Stock No. 217-6963
  • Mfr. Part No. 5ST3733
Each
MYR164.78
In Stock
Altech 6A DII Bottle Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 900-1576
  • Mfr. Part No. 6D27SB
Each (In a Pack of 10)
MYR13.316
In Stock
Eaton 10A Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 182-1735
  • Mfr. Part No. SMD10
Each
MYR26.57
In Stock
Panasonic SMD Non Resettable Fuse 2A, 32V dc
  • RS Stock No. 759-4751P
  • Mfr. Part No. ERBRD2R00X
Each (Supplied on a Reel)
MYR1.14
Currently unavailable
RS PRO 25A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-4670
Each
MYR86.36
Temporarily out of stock
Better World
Schneider Electric Circuit Trip
  • RS Stock No. 212-0249
  • Mfr. Part No. LV432068
Each
MYR3,852.85
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 10mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6976
  • Mfr. Part No. 2CSR255180R0165
Each
MYR1,407.86
In Stock
Socomec Fuse Holder Busbar
  • RS Stock No. 252-3743
  • Mfr. Part No. 17490001
Each
MYR27.54
In Stock
RS PRO 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-082
1 Pack of 10
MYR949.38
1
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