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

131 / 999+
Eaton 100A 0.001 x 0.001in Modular Fuse Fuse Block, 700V
  • RS Stock No. 260-719
  • Mfr. Part No. BH-0112
Each
MYR1,322.03
Better World
ABB, Tmax XT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 236-7497
  • Mfr. Part No. 1SDA067786R1 XT2L 160 MA 32 FF
Each
MYR2,471.80
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 265-7495
  • Mfr. Part No. 2800976
Each
MYR885.28
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8534
Each
MYR515.55
Eaton 10A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1060
  • Mfr. Part No. S505-10-R
Each (In a Pack of 10)
MYR1.975
RS PRO 6.3A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 420-195
Each (In a Pack of 10)
MYR11.684
RS PRO Industrial Surge Protector, 40kA, 2.8kV, DIN Rail Mount
  • RS Stock No. 101-772
Each
MYR259.49
ABB RHD T6 W Rotary Handle for use with Tmax T
  • RS Stock No. 237-5996
  • Mfr. Part No. 1SDA060407R1 RHD W T6
Each
MYR885.56
RS PRO 10 A Panel Mount Fuse Holder, 1P for 5 x 20 mm, 250 V
  • RS Stock No. 277-3922
Each (In a Pack of 5)
MYR16.60
Better World
Schneider Electric Busbar End Feed Unit
  • RS Stock No. 219-8919
  • Mfr. Part No. KSA400AB4
Each
MYR12,419.58
RS PRO 3A Violet Blade Car Fuse, 32V dc
  • RS Stock No. 177-8133
Each (In a Pack of 50)
MYR1.229
Schneider Electric RCBO, 6A Current Rating, Type C, A9A Range
  • RS Stock No. 335-055
  • Mfr. Part No. A9A19802
Each
MYR244.66
Siemens 24V ac Circuit Trip
  • RS Stock No. 223-7632
  • Mfr. Part No. 5TT4425-2
Each
MYR480.15
RS PRO Industrial Surge Protector, 2000A, 70 V, DIN Rail Mount
  • RS Stock No. 101-782
Each
MYR440.70
ABB System Pro M Compact S200L MCB, 1P, 16A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 183-3626
  • Mfr. Part No. 2CDS241701R0164
Each
MYR125.07
Better World
ABB System Pro M Compact S200 MCB, 1P, 3A Curve K, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7946
  • Mfr. Part No. 2CDS251001R0317 S201-K3
Each
MYR179.89
Better World
ABB System Pro M Compact S200 MCB, 1P, 16A Curve C, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 225-5988
  • Mfr. Part No. 2CDS251001R0164 S201 C 16A - 6 KA
Each
MYR125.16
RS PRO 16A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2517
Each (In a Pack of 5)
MYR18.944
Mersen 5A 5SF Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 816-8952
  • Mfr. Part No. T090522
Each (In a Pack of 10)
MYR2.807
Eaton 8A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 181-8880
  • Mfr. Part No. C10M8
Each
MYR7.61
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