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

293 / 999+
Temporarily out of stock
Hager BFF Series RCCB, 40A, 2 Pole, 300mA, Type F
  • RS Stock No. 597-979
  • Mfr. Part No. BFF240
Each
MYR2,140.62
In Stock
Legrand DX3 RCCB, 25A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 732-0051
  • Mfr. Part No. 4 116 10
Each
MYR725.98
In Stock
Eaton 5A Tan Automotive Car Fuse, 32V dc
  • RS Stock No. 848-2554
  • Mfr. Part No. ATC-5
Each
MYR5.78
Temporarily out of stock
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 272-0187
  • Mfr. Part No. 3VA1580-6EF32-0AA0
Each
MYR15,334.81
Temporarily out of stock
Schneider Electric A9Z RCCB, 25A, 2 Pole, 30mA, Type A-SI, 220-240V ac
  • RS Stock No. 212-296
  • Mfr. Part No. A9Z31225
Each
MYR1,192.64
In Stock
Eaton 63A Centred Tag Fuse, NH000, 690 V, 700 V
  • RS Stock No. 182-1395
  • Mfr. Part No. 170M1565D
Each (In a Box of 10)
MYR354.355
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
In Stock
Eaton RCCB, 63A, 4 Pole, 300mA, 230 V ac, 400 V ac
  • RS Stock No. 203-9042
  • Mfr. Part No. 300303 PXF-63/4/03-B
Each
MYR4,263.59
Temporarily out of stock
Siemens SENTRON 5SJ4311 MCB, 3P, 5A Curve D, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 300-073
  • Mfr. Part No. 5SJ4311-8HG41
Each
MYR1,444.86
In Stock
Littelfuse 15A T Cartridge Fuse, 10 x 38mm
  • RS Stock No. 878-4024
  • Mfr. Part No. CCMR015.T
Each (In a Pack of 10)
MYR250.654
Limited stock
Eaton xPole PXL, S200 MCB, 1P, 16A Curve B, 400V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 486-883
  • Mfr. Part No. 236033 PXL-B16/1
Each
MYR19.58
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4253
  • Mfr. Part No. 1SDA054551R1
Each
MYR14,467.50
In Stock
Mersen 500mA FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6568
  • Mfr. Part No. H084003
Each (In a Pack of 10)
MYR20.037
Temporarily out of stock
Phoenix Contact 10A Fuse Holder for 45.4mm Fuse, 400V
  • RS Stock No. 131-142
  • Mfr. Part No. 920326
1 Pack of 1
MYR39.69
In Stock
nVent ERIFLEX ERIFLEX Busbar, 18mm Pitch
  • RS Stock No. 277-6089
  • Mfr. Part No. 549220
Each (In a Pack of 4)
MYR256.268
Temporarily out of stock
Better World
Siemens SENTRON 5SL6 MCB, 3P, 63A Curve C, 400V AC, 72V DC
  • RS Stock No. 213-1045
  • Mfr. Part No. 5SL6363-7
Each
MYR1,073.31
In Stock
ABB SMISSLINE TP S400M MCB, 3P, 25A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 177-030
  • Mfr. Part No. 2CCS573001R0254 S403M-C25
Each
MYR746.29
In Stock
Littelfuse 1.85A Resettable Fuse, 30V dc
  • RS Stock No. 517-6809P
  • Mfr. Part No. RUEF185
Each (Supplied in a Bag)
MYR2.089
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-4549
  • Mfr. Part No. 1SDA072788R1
Each
MYR52,612.76
In Stock
ABB System Pro M Compact S200 MCB, 1P, 3A, Type Z, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-257
  • Mfr. Part No. 2CDS251001R0318
Each
MYR504.33
1
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