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

3 / 999+
RS PRO 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-609
Each (In a Pack of 10)
MYR1.725
Bourns 0.3A Resettable Fuse, 60V
  • RS Stock No. 647-8005
  • Mfr. Part No. MF-SM030-2
Each (In a Pack of 10)
MYR1.594
SIBA 16A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 419-0090
  • Mfr. Part No. 70-059-61/16A
Each (In a Pack of 10)
MYR3.479
Selco Thermal Fuse +152°C 10 A, 250V ac
  • RS Stock No. 111-7808
  • Mfr. Part No. SWTC-306-3535
Each (In a Pack of 10)
MYR9.589
RS PRO SMD Non-Resettable Surface Mount Fuse 1A, 63V
  • RS Stock No. 252-2194
Each (In a Pack of 50)
MYR0.888
Europa EUC1P EUC MCB, 1P, 4A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6490
  • Mfr. Part No. EUC1P4C
Each
MYR45.45
RS PRO MCB, 1P, 4A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0202
Each
MYR52.26
ETA Thermal Circuit Breaker - 106-P30 Single Pole 250V Voltage Rating Panel Mount, 500mA Current Rating
  • RS Stock No. 336-028
  • Mfr. Part No. 106-P30-000040-0.5A
Each
MYR135.56
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 25A Current Rating
  • RS Stock No. 406-9491
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-25A
Each
MYR129.91
Europa RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type AC, EUC7R Range
  • RS Stock No. 210-4739
  • Mfr. Part No. EUC7RC.16/1CA
Each
MYR338.01
RS PRO 4A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6085
Each (In a Pack of 10)
MYR2.992
RS PRO 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5963
Each (In a Pack of 10)
MYR2.251
MEAN WELL Surge Protector, 20kA, 1500V (Volts)
  • RS Stock No. 424-954
  • Mfr. Part No. SPD-20-240P
Each
MYR82.96
Legrand 4117 RCD, 63A, 3+N Pole, 30mA, Type A
  • RS Stock No. 863-7764
  • Mfr. Part No. 4 117 61
Each
MYR907.68
ETI 16A DI Diazed Fuse, E16 Thread Size, gG - gL, 500V ac
  • RS Stock No. 417-852
  • Mfr. Part No. 2311405
Each (In a Pack of 5)
MYR6.27
ETI 25A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-686
  • Mfr. Part No. 2312407
Each (In a Pack of 5)
MYR6.202
Europa RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, EUBLMC Range
  • RS Stock No. 210-4732
  • Mfr. Part No. EUBLMC32B30A
Each
MYR263.37
ETI 10A DI Diazed Fuse, E16 Thread Size, gG - gL, 500V ac
  • RS Stock No. 417-846
  • Mfr. Part No. 2311404
Each (In a Pack of 5)
MYR6.216
RS PRO 3.15A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-049
Each (In a Pack of 10)
MYR5.20
Eaton, xEnergy MCCB 3P 200A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 628-8054
  • Mfr. Part No. 265725 NZMN2-M200
1 Box of 1
MYR3,214.63
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