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

46604 Products showing for Fuses & Circuit Breakers

25 / 999+
Better World
ABB, XT4H MCCB 3P 250A, Fixed Mount
  • RS Stock No. 236-6630
  • Mfr. Part No. 1SDA068175R1 XT4H 250 BLOC FF
Each
MYR2,965.24
Hager NFN MCB, 4P, 16A Curve C, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4722
  • Mfr. Part No. NFN416
Each
MYR917.16
Eaton 6A T Cartridge Fuse, 21 x 57mm
  • RS Stock No. 773-3536
  • Mfr. Part No. LPJ-6SP
Each
MYR333.07
Better World
Schneider Electric, ComPacT New Generation Circuit breaker 3P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 254-6286
  • Mfr. Part No. C10F3TM100
Each
MYR2,764.59
Eaton 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1408
Each (In a Pack of 10)
MYR1.165
Eaton 40A Bolted Tag Fuse, 250 V dc, 500V ac, 111mm
  • RS Stock No. 181-8687
  • Mfr. Part No. BD40
Each
MYR72.27
Littelfuse 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 894-9593
  • Mfr. Part No. 04773.15MXP
Each (In a Pack of 5)
MYR9.262
SIBA 2A F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8187
  • Mfr. Part No. 171530.2
Each (In a Pack of 10)
MYR13.034
Mersen 63A DIII Diazed Fuse, E33 Thread Size, gG, 500V
  • RS Stock No. 377-0522
  • Mfr. Part No. R215088
Each (In a Pack of 5)
MYR13.678
Littelfuse 2.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3502
  • Mfr. Part No. 021902.5MXAP
Each (In a Pack of 10)
MYR3.601
RS PRO 250mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6060
Each (In a Pack of 10)
MYR3.534
Eaton 16A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
1 Pack of 10
MYR47.67
ABB SMISSLINE TP S400M MCB, 1P, 8A Curve B, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 176-740
  • Mfr. Part No. 2CCS571001R0085 - S401MB08
Each
MYR182.07
ABB RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6949
  • Mfr. Part No. 2CSR275080R1164 DS201 M C16 AC30
Each
MYR922.90
Eaton 160A British Standard Fuse, A4, 415V ac, 94mm
  • RS Stock No. 139-962
  • Mfr. Part No. DEO160
Each
MYR168.49
Eaton 5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1133
  • Mfr. Part No. S500-5-R
Each (In a Pack of 10)
MYR1.557
Mersen 400A NH Fuse, NH2, 500V ac
  • RS Stock No. 375-9733
  • Mfr. Part No. N211083
Each
MYR140.98
Schurter 2.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-8086
  • Mfr. Part No. 0034.3121
Each (In a Pack of 10)
MYR1.853
Littelfuse 20A Yellow Blade Car Fuse, 32V dc
  • RS Stock No. 787-4136
  • Mfr. Part No. 0287020.PXCN
Each (In a Pack of 10)
MYR1.525
Eaton 80A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 181-8558
  • Mfr. Part No. C22M80
Each (In a Box of 10)
MYR26.346
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