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

269 / 999+
In Stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7319
  • Mfr. Part No. 1SDA067498R1 Ekip LS/I In=40A XT4 3p
Each
MYR2,478.52
Temporarily out of stock
Phoenix Contact 2 Phase Surge Protector, 50kA, DIN Rail Mount
  • RS Stock No. 207-2702
  • Mfr. Part No. 2905342
Each
MYR1,094.82
In Stock
Bourns SMD Non Resettable Fuse 500mA, 24V dc
  • RS Stock No. 692-4959
  • Mfr. Part No. SF-0402F050-2
Each (In a Pack of 10)
MYR2.175
In Stock
Siemens 80A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-850
  • Mfr. Part No. 3NA6824
Each (In a Pack of 3)
MYR48.057
In Stock
Littelfuse 2.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-2969
  • Mfr. Part No. 021302.5MXP
Each (In a Pack of 10)
MYR2.715
In Stock
ABB RCBO, 10A Current Rating, 3P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 767-4406
  • Mfr. Part No. 2CSR273001R1104 DS203 M AC-C10/0,03
Each
MYR1,662.20
Temporarily out of stock
ABB SU200 M MCB, 4P, 35A Curve K, 480V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-246
  • Mfr. Part No. 2CDS274337R0547
Each
MYR3,223.48
In Stock
Eaton 7.5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2936
  • Mfr. Part No. AGC-7-1-2-R
Each
MYR7.87
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 16A Curve C, 100 → 130V AC, 12 → 144V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9295
  • Mfr. Part No. A9F87216
Each
MYR1,042.31
In Stock
RS PRO Fuse Holder Disconnector Bar
  • RS Stock No. 242-0472
1 Bag of 10
MYR83.23
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 769-3371
  • Mfr. Part No. SS-5F-1-6A-BK
Each (In a Pack of 5)
MYR5.696
In Stock
Littelfuse 0.35A Resettable Fuse, 16V dc
  • RS Stock No. 657-1766
  • Mfr. Part No. NANOSMDC035F
Each (In a Pack of 10)
MYR2.159
In Stock
Siemens SENTRON 2 Phase Busbar
  • RS Stock No. 187-5201
  • Mfr. Part No. 5ST3737
Each
MYR861.01
In Stock
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 20A Current Rating
  • RS Stock No. 221-5637
  • Mfr. Part No. 3-128-240
Each
MYR104.25
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 100A, Breaking Capacity 36kA
  • RS Stock No. 260-9745
  • Mfr. Part No. LV510347
Each
MYR3,884.09
Temporarily out of stock
ABB RCBO, 16A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6868
  • Mfr. Part No. 2CSR255080R2164 DS201 C16 AC100
Each
MYR840.83
In Stock
Eaton 100A Offset Tag Fuse, 440V ac
  • RS Stock No. 182-1534
  • Mfr. Part No. XS100
Each (In a Box of 10)
MYR355.983
In Stock
Schurter Fuse Holder Fusedrawer
  • RS Stock No. 867-6848
  • Mfr. Part No. 4303.2401
Each
MYR26.04
In Stock
Better World
Schneider Electric, ComPact MCCB, Fixed Mount
  • RS Stock No. 221-0947
  • Mfr. Part No. LV429408
Each
MYR1,094.95
Temporarily out of stock
Legrand 25A F Ceramic Cartridge Fuse, 10 x 31mm
  • RS Stock No. 167-4371
  • Mfr. Part No. 0 127 25
Each (In a Pack of 10)
MYR19.848
1
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