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

69 of 999+
In Stock
Schneider Electric Multi 9 C60H-DC MCB, 2P, 4A Curve C, 500V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2471
  • Mfr. Part No. M9U21204
Each
SGD415.53(exc. GST)
Temporarily out of stock
Rockwell Automation FB243 Busbar, 1000V
  • RS Stock No. 281-6003
  • Mfr. Part No. FB243608Q1
Each
SGD160.07(exc. GST)
In Stock
ABB 12 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 183-3758
  • Mfr. Part No. 1SLM006500A2212
Each
SGD69.22(exc. GST)
In Stock
Eaton 35A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 181-8921
  • Mfr. Part No. 35NZ02
Each
SGD5.79(exc. GST)
In Stock
Littelfuse 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 787-4139
  • Mfr. Part No. 028707.5PXCN
Each (In a Pack of 10)
SGD0.434(exc. GST)
In Stock
Better World
Siemens SENTRON 5SL6 MCB, 1P, 10A Curve C, 6 kA Breaking Capacity
  • RS Stock No. 202-7139
  • Mfr. Part No. 5SL6110-7
Each
SGD27.86(exc. GST)
In Stock
Eaton 10A Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 182-1532
  • Mfr. Part No. SMD10
Each (In a Box of 20)
SGD7.248(exc. GST)
In Stock
Contactum A Type RCD RCCB, 100A, 4 Pole, 100mA, Type A, 220 → 415V ac
  • RS Stock No. 240-6405
  • Mfr. Part No. CPR100010A
Each
SGD130.07(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Door Coupling Handle for use with MCC-V
  • RS Stock No. 272-0585
  • Mfr. Part No. 164297 PKZ0-XHT-MCC
Each
SGD105.52(exc. GST)
In Stock
Eaton 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 849-6030
  • Mfr. Part No. GDB-10A
Each (In a Pack of 5)
SGD9.12(exc. GST)
Temporarily out of stock
ABB Front Terminal for use with S6 800, T6 800
  • RS Stock No. 250-4493
  • Mfr. Part No. 1SDA013954R1
Each
SGD297.49(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 20A Curve D, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9481
  • Mfr. Part No. 2CDS251001R0201 S201-D20
Each
SGD31.48(exc. GST)
In Stock
Eaton 63A British Standard Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 156-8973
  • Mfr. Part No. 63FE
Each
SGD122.80(exc. GST)
Temporarily out of stock
ABB, SACE FORMULA MCCB Molded Case Circuit Breaker 1P 63A, Fixed Mount
  • RS Stock No. 231-9300
  • Mfr. Part No. 1SDA075871R1 KIT FC Cu XT1 14-1/0 AWG 6
Each
SGD224.72(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 175-1500
  • Mfr. Part No. GV4P115S
Each
SGD1,395.53(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type C, Multi 9 Range
  • RS Stock No. 214-2052
  • Mfr. Part No. M9D11616
Each
SGD225.72(exc. GST)
In Stock
Schurter 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 600V ac
  • RS Stock No. 123-2017
  • Mfr. Part No. 0031.1622
Each
SGD17.83(exc. GST)
In Stock
Schurter 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 866-3435
  • Mfr. Part No. 0031.1661
Each (In a Pack of 50)
SGD2.00(exc. GST)
In Stock
Schneider Electric, PowerLogic, 63A, Energy Sensor, 1VA, Wired
  • RS Stock No. 275-6659
  • Mfr. Part No. A9MEM1560
Each
SGD275.66(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB, 2P, 2A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 219-9155
  • Mfr. Part No. M9F42202
Each
SGD471.93(exc. GST)
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