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
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

92 / 999+
Siemens 63A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 232-2017
  • Mfr. Part No. 3NC1463-0MK
Each (In a Pack of 10)
MYR157.619
Eaton xEffect MCB, 2P, 10A Curve S, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 532-5152
  • Mfr. Part No. 278810 FAZ-S10/2
Each
MYR393.60
ABB F200 RCCB, 40A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 231-9899
  • Mfr. Part No. 2CSF202101R1400 F202 A-40/0.03
1 Box of 1
MYR1,020.42
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.1kV, DIN Rail Mount
  • RS Stock No. 101-748
Each
MYR152.43
Bourns 0.17A Resettable Fuse, 60V
  • RS Stock No. 647-8437P
  • Mfr. Part No. MF-R017
Each (Supplied in a Bag)
MYR2.086
Eaton 3A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2914
  • Mfr. Part No. BK-AGC-3-R
Each
MYR2.38
RS PRO MCB, 1P, 1A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0194
Each
MYR48.36
Eaton 5A T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-1687
  • Mfr. Part No. FNQ-5
Each
MYR252.01
Eaton 125mA Cartridge Fuse, 10 x 126mm
  • RS Stock No. 849-5563
  • Mfr. Part No. HVJ-1-8
Each
MYR409.14
Rockwell Automation FB100 Busbar, 1000V
  • RS Stock No. 282-2337
  • Mfr. Part No. FB100480Q1
Each (In a Pack of 4)
MYR375.513
RS PRO Industrial Surge Protector, 40kA, 2.8kV, DIN Rail Mount
  • RS Stock No. 101-772
Each
MYR259.49
Eaton 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9389
  • Mfr. Part No. S506-10-R
1 Bag of 1000
MYR1,960.00
Schneider Electric, PowerPact MCCB 2P 40A, Breaking Capacity 35 kA, Clip-On
  • RS Stock No. 346-796
  • Mfr. Part No. BGF26040
Each
MYR3,721.60
Eaton 4A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8370P
  • Mfr. Part No. C10G4
Each (Supplied in a Box)
MYR7.29
Schurter OG Tin Plated Bronze PCB Mount Fuse Clip for 5 x 20mm Fuse Clip Fuse
  • RS Stock No. 269-3795
  • Mfr. Part No. 0751.0099
Each
MYR1.77
Eaton 20A Inline Fuse Holder for 6.3 x 32mm Fuse, 600V
  • RS Stock No. 225-8213
  • Mfr. Part No. BK-HVI-R
Each
MYR258.89
Eaton 6A Cartridge Fuses, 14 x 51mm
  • RS Stock No. 229-193
  • Mfr. Part No. C14G6S CYL FUSE >STR >14 x 51 6A GG 690V AC
1 Pack of 10
MYR402.17
Eaton 4A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8412
  • Mfr. Part No. C14G4
Each (In a Pack of 10)
MYR12.342
RS PRO SMD Non-Resettable Surface Mount Fuse 12A, 63V
  • RS Stock No. 252-2156
Each (On a Tape of 4000)
MYR1.079
Schurter 2A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4265
  • Mfr. Part No. 8020.5071.G
Each (In a Pack of 10)
MYR3.088
1
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