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

49110 Products showing for Fuses & Circuit Breakers

26 of 999+
RS PRO 7A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3439
Each (In a Pack of 10)
SGD0.634(exc. GST)
Lovato ModuLo P2MB MCB, 1P, 100A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-6141
  • Mfr. Part No. P2MB1PC100
Each
SGD142.46(exc. GST)
Legrand 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 400V ac
  • RS Stock No. 238-4861
  • Mfr. Part No. 0 058 24
Each
SGD33.25(exc. GST)
Eaton 125A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 182-1597
  • Mfr. Part No. 170M1568D
Each
SGD145.51(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - LELHK111 3 Pole 240V ac Voltage Rating Panel Mount, 25A Current Rating
  • RS Stock No. 275-0367
  • Mfr. Part No. LELHK111-1-62-25.0-U-01-V
Each
SGD341.16(exc. GST)
Eaton 440mA F Melamine Cartridge Fuse, 10 x 35mm
  • RS Stock No. 459-7918
  • Mfr. Part No. DMM-B-44-100-R
Each (In a Pack of 5)
SGD40.792(exc. GST)
Eaton RCCB, 40A, 4 Pole, 100mA, Type AC, 230 V ac, 400 V ac
  • RS Stock No. 227-0726
  • Mfr. Part No. 264301 PFGM-40/4/01
Each
SGD392.42(exc. GST)
WAGO 32A Fuse Holder for 10 x 38mm Fuse, 1P, 24V dc
  • RS Stock No. 279-1650
  • Mfr. Part No. 811-314
Each
SGD46.57(exc. GST)
Socomec 1kA Tag Fuse, NH3, 690V, 150mm
  • RS Stock No. 252-5308
  • Mfr. Part No. 170M6814
Each
SGD285.44(exc. GST)
Phoenix Contact Busbar, 6.2mm Pitch
  • RS Stock No. 627-3406
  • Mfr. Part No. 3030271
Each (In a Pack of 5)
SGD9.98(exc. GST)
Siemens 160A NH Fuse, NH00, 500V ac
  • RS Stock No. 395-660
  • Mfr. Part No. 3NA3836
Each (In a Pack of 3)
SGD38.12(exc. GST)
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-447
  • Mfr. Part No. A9D07220
Each
SGD962.31(exc. GST)
ABB S800U MCB, 3P, 100A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-649
  • Mfr. Part No. 2CCS863017R0105
Each
SGD561.50(exc. GST)
ABB, Protecta MCCB 3P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9175
  • Mfr. Part No. 1SDA067418R1 XT1N 160 TMD 160-1600 3p F F
Each
SGD618.92(exc. GST)
Eaton 2A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 228-664
  • Mfr. Part No. C10M2 CYLINDRICAL FUSE 10 x 38 2A AM 500V AC
1 Pack of 10
SGD17.54(exc. GST)
Eaton xEffect MCB, 3P, 32A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 624-0399
  • Mfr. Part No. 278876 FAZ-C32/3
Each
SGD195.40(exc. GST)
Better World
Siemens Sentron 5SY4 MCB, 1P, 6A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 383-2018
  • Mfr. Part No. 5SY4106-7
Each
SGD39.33(exc. GST)
Mersen 2A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 230-3569
  • Mfr. Part No. H214114
Each (In a Pack of 10)
SGD4.334(exc. GST)
Better World
Schneider Electric Acti 9 A9F9 MCB, 2P, 32A, Type Z, 400V AC, 125V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2491
  • Mfr. Part No. A9F92232
Each
SGD207.41(exc. GST)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 50A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9715
  • Mfr. Part No. LV510304
Each
SGD243.69(exc. GST)
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