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

16 / 999+
ETA Thermal Circuit Breaker - 1410-L Single Pole 250V Voltage Rating PCB Mount, 5A Current Rating
  • RS Stock No. 409-788
  • Mfr. Part No. 1410-L210-L2F1-S02-5A
Each
MYR64.93
Littelfuse 4A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0124
  • Mfr. Part No. 0313004.HXP
Each (In a Pack of 5)
MYR6.116
Littelfuse 0.25A Resettable Fuse, 72V
  • RS Stock No. 517-6607
  • Mfr. Part No. RXEF025
Each (In a Pack of 10)
MYR1.307
Legrand DX3 RCD, 16A, 3+N Pole, 30mA, Type AC
  • RS Stock No. 731-9966
  • Mfr. Part No. 4 111 86
Each
MYR3,508.40
Eaton 12A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7049
  • Mfr. Part No. MDA-12-R
Each
MYR7.48
Eaton 30A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7073
  • Mfr. Part No. MDA-30-R
Each
MYR7.66
Staubli 500mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 564-645
  • Mfr. Part No. 69.0012
Each
MYR12.53
Schneider Electric Acti9 iC60 RCCB, 32A, 4 Pole, 30mA, Type C, 380 → 415V ac
  • RS Stock No. 110-279
  • Mfr. Part No. A9D77432
Each
MYR3,738.36
Eaton 32A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8639
  • Mfr. Part No. 32NHG000B
Each
MYR34.98
Eaton xEffect MCB, 1P, 2A Curve C, 240 → 415V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6882
  • Mfr. Part No. 102080 FAZ-C2/1-NA
Each
MYR218.89
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 232-0263
  • Mfr. Part No. 1SDA067560R1 XT2S 160 TMA 160A FF
Each
MYR2,438.18
Better World
Schneider Electric Insulation accessory for use with Compact NSX, Easy Pact CVS
  • RS Stock No. 201-3601
  • Mfr. Part No. LV429517
Each
MYR159.86
Schurter 6.3A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4246
  • Mfr. Part No. 8020.5019.G
Each (In a Pack of 10)
MYR3.468
Eaton RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 227-0738
  • Mfr. Part No. 267448 PFGM-63/2/003-A
Each
MYR433.93
Eaton xEffect MCB, 2P, 6A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4719
  • Mfr. Part No. 239100 FAZ6-C6/2
Each
MYR365.00
Littelfuse 8A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4735
  • Mfr. Part No. 0215008.MXP
Each (In a Pack of 10)
MYR6.767
Better World
Schneider Electric MCCB 3P 0 → 160A, Fixed Mount
  • RS Stock No. 178-7889
  • Mfr. Part No. LV426940
Each
MYR157.96
Eaton 50A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8645
  • Mfr. Part No. 50NHG000B
Each
MYR44.59
Eaton 25A Bolted Tag Fuse, F2, 550V ac
  • RS Stock No. 181-8514
  • Mfr. Part No. ESD25
1 Box of 20
MYR797.11
Better World
Schneider Electric Vigi iDT40 RCD, 25A, 1+N Pole, 30mA, 230V ac
  • RS Stock No. 191-6145
  • Mfr. Part No. A9Y62625
Each
MYR1,608.81
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