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

47329 Products showing for Fuses & Circuit Breakers

1 of 999+
Quick acting F LBC fuse,800mA 5x20mm
  • RS Stock No. 563-655
Each (In a Pack of 10)
TWD11.10(exc. GST)
Better World
Schneider Electric Multi 9 C60SP MCB, 3P, 16A Curve D, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2402
  • Mfr. Part No. M9F23316
Each
TWD4,648.00(exc. GST)
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 20A Curve C, 415V AC, 65V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2359
  • Mfr. Part No. M9F22120
Each
TWD997.00(exc. GST)
RS PRO 6.3A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9822
Each (In a Pack of 10)
TWD17.10(exc. GST)
Eaton 12A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8504
  • Mfr. Part No. C10M12
Each (In a Pack of 10)
TWD44.80(exc. GST)
Schurter 12A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 269-3863
  • Mfr. Part No. 8020.0603
Each
TWD40.00(exc. GST)
Better World
Siemens Sentron 5SY4 MCB, 3P, 32A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1385
  • Mfr. Part No. 5SY4332-8
Each
TWD5,560.00(exc. GST)
Littelfuse PCB Mount Fuse Holder for ATO Fuse, 80V dc
  • RS Stock No. 894-9600
  • Mfr. Part No. 178.6164.0002
Each
TWD108.00(exc. GST)
ABB FH200 RCCB, 25A, 2 Pole, 30mA, Type AC
  • RS Stock No. 186-3455
  • Mfr. Part No. 2CSF202002R1250 FH202 AC-25/0,03
Each
TWD2,054.00(exc. GST)
Eaton 250mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7102
  • Mfr. Part No. MDL-1-4-R
Each
TWD198.00(exc. GST)
Better World
Siemens SENTRON 5SY4 MCB, 1P, 5A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 213-1070
  • Mfr. Part No. 5SY4111-7
Each
TWD2,050.00(exc. GST)
Better World
Schneider Electric 50A Rail Mount Fuse Holder for 14 x 51mm Fuse, 1P, 690V ac
  • RS Stock No. 482-897
  • Mfr. Part No. DF141
Each
TWD557.00(exc. GST)
Eaton 10A Bolted Tag Fuse, 240 V ac, 150V dc, 41.8mm
  • RS Stock No. 181-8670
  • Mfr. Part No. 10LET
Each
TWD2,345.00(exc. GST)
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2926
  • Mfr. Part No. V302790
1 Box of 10
TWD2,703.00(exc. GST)
Littelfuse 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3120
  • Mfr. Part No. 0217010.MXP
Each (In a Pack of 10)
TWD9.70(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 80A Current Rating
  • RS Stock No. 175-1486
  • Mfr. Part No. GV4LE80N
Each
TWD18,178.00(exc. GST)
Eaton 25A British Standard Fuse, 240V ac, 43mm
  • RS Stock No. 414-752
  • Mfr. Part No. GSA25
Each (In a Pack of 5)
TWD1,360.80(exc. GST)
Phoenix Contact Thermal Circuit Breaker - CB TM1 Single Pole 50V dc Voltage Rating, 2A Current Rating
  • RS Stock No. 217-6359
  • Mfr. Part No. 2800837
Each
TWD1,392.00(exc. GST)
Siemens SENTRON 5SJ4 MCB, 2P, 16A Curve C, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 212-8818
  • Mfr. Part No. 5SJ4216-7HG41
Each
TWD4,909.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 40A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3408
  • Mfr. Part No. A9F54340
Each
TWD5,360.00(exc. GST)
Results per page
1
2
3
2367

Related links