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

47304 Products showing for Fuses & Circuit Breakers

3 of 999+
In Stock
Wickmann 6.3A PCB Mount Fuse Holder, 250V ac
  • RS Stock No. 110-7900
  • Mfr. Part No. 56000001009
Each (In a Pack of 10)
TWD19.80(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 541-3259
  • Mfr. Part No. 0251.500NRT1L
Each (In a Pack of 10)
TWD23.60(exc. GST)
In Stock
Littelfuse 6.3A PCB Mount Fuse Holder for 8.5 x 8mm Fuse, 250V ac
  • RS Stock No. 769-0180
  • Mfr. Part No. 57100000001
Each (In a Pack of 5)
TWD27.40(exc. GST)
In Stock
Bulgin 13A Panel Mount Fuse Holder for 6.3 x 25mm Fuse, 1P, 250V ac
  • RS Stock No. 408-397
  • Mfr. Part No. FX0416
Each
TWD358.00(exc. GST)
In Stock
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 400V ac
  • RS Stock No. 867-4365
  • Mfr. Part No. 3101.0215
Each (In a Pack of 10)
TWD93.60(exc. GST)
In Stock
Eaton 32A Rail Mount Fuse Holder for A2 Fuse, 1P, 660V ac
  • RS Stock No. 418-467
  • Mfr. Part No. CM32F
Each
TWD737.00(exc. GST)
In Stock
Eaton 32A Bolted Tag Fuse, LET, 150 V dc, 240V ac, 41.8mm
  • RS Stock No. 156-8800
  • Mfr. Part No. 32LET
Each
TWD567.00(exc. GST)
In Stock
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)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 769-3208
  • Mfr. Part No. SR-5-1A-BK
Each (In a Pack of 10)
TWD68.10(exc. GST)
In Stock
Siemens 10A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1051
  • Mfr. Part No. 5SE2310
Each (In a Pack of 10)
TWD41.10(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 1.25A, 600V
  • RS Stock No. 738-2968
  • Mfr. Part No. 04611.25ER
Each (In a Pack of 10)
TWD35.90(exc. GST)
In Stock
Legrand 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6111
  • Mfr. Part No. 0 130 10
Each (In a Box of 10)
TWD78.90(exc. GST)
In Stock
RS PRO 16A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2517
Each (In a Pack of 5)
TWD121.20(exc. GST)
In Stock
Littelfuse 1A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0063
  • Mfr. Part No. 0313001.HXP
Each (In a Pack of 10)
TWD28.10(exc. GST)
In Stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 384-011
  • Mfr. Part No. 3101.0010
Each (In a Pack of 5)
TWD125.60(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 20A Curve D, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2390
  • Mfr. Part No. M9F23120
Each
TWD1,660.00(exc. GST)
In Stock
Mersen 100A NH Fuse, NH000, 500V ac
  • RS Stock No. 136-0568
  • Mfr. Part No. B219122C / NH000GG50V100/3
Each
TWD231.00(exc. GST)
In Stock
Eaton 6A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 413-282
  • Mfr. Part No. NITD6
Each (In a Pack of 5)
TWD219.20(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 2A Curve B, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2327
  • Mfr. Part No. M9F21102
Each
TWD1,516.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 4A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 622-0109
  • Mfr. Part No. 5SY4304-7
Each
TWD3,249.00(exc. GST)
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