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

9 of 999+
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 226-6549
  • Mfr. Part No. 37011000000
Each (In a Pack of 10)
SGD1.017(exc. GST)
In Stock
Mersen 2A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2897
  • Mfr. Part No. S302788
1 Box of 10
SGD145.75(exc. GST)
Temporarily out of stock
Siemens 50A Centred Tag Fuse, NH00, 690V ac
  • RS Stock No. 203-2127
  • Mfr. Part No. 3NA3820-6
Each (In a Pack of 3)
SGD68.80(exc. GST)
In Stock
Better World
Schneider Electric Vigi RCD, 63A, 4 Pole, 30mA, 400/415V ac
  • RS Stock No. 806-7203
  • Mfr. Part No. A9V02763
Each
SGD479.53(exc. GST)
In Stock
Schurter 20A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 865-7575
  • Mfr. Part No. 0034.3130
Each (In a Pack of 50)
SGD0.89(exc. GST)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 63mA, 250V ac
  • RS Stock No. 284-5209
  • Mfr. Part No. 0034.6603
Each (In a Pack of 10)
SGD1.403(exc. GST)
Temporarily out of stock
Better World
ABB Compact Home SH200 MCB, 1P, 20A Curve B, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8166
  • Mfr. Part No. 2CDS211001R0205 SH201-B20
Each
SGD26.60(exc. GST)
In Stock
Phoenix Contact Surge Protector, 250V ac, DIN Rail Mount
  • RS Stock No. 801-6211
  • Mfr. Part No. 2950048
Each
SGD64.23(exc. GST)
In Stock
RS PRO 1A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9939
Each (In a Pack of 10)
SGD0.718(exc. GST)
In Stock
Eaton 125mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3002
  • Mfr. Part No. GMA-125-R
Each
SGD7.95(exc. GST)
Temporarily out of stock
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 3A Current Rating
  • RS Stock No. 221-5638
  • Mfr. Part No. 3-128-243
1 Box of 10
SGD278.37(exc. GST)
In Stock
Schneider Electric RCBO, 16A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type AC, Acti9 Range
  • RS Stock No. 276-9125
  • Mfr. Part No. A9D57416
Each
SGD1,240.79(exc. GST)
In Stock
Littelfuse Fuse Holder Water Proof Holder
  • RS Stock No. 738-2784
  • Mfr. Part No. FHAC0001ZXJ
Each
SGD10.54(exc. GST)
In Stock
Eaton 7.5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2936
  • Mfr. Part No. AGC-7-1-2-R
Each
SGD2.85(exc. GST)
In Stock
SIBA 12.5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3260
  • Mfr. Part No. 70-007-33/12.5A
Each (In a Pack of 10)
SGD0.574(exc. GST)
In Stock
Eaton 25A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 703-8778
  • Mfr. Part No. 25NHG000B-690
Each
SGD8.75(exc. GST)
In Stock
SIBA 315mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3289
  • Mfr. Part No. 70-007-65/0.315A
Each (In a Pack of 10)
SGD0.485(exc. GST)
In Stock
Eaton 500mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3034
  • Mfr. Part No. GMA-500-R
Each
SGD1.28(exc. GST)
In Stock
Eaton 2A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-177
  • Mfr. Part No. C10G2 CYLINDRICAL FUSE 10 x 38 2A GG 500V AC
1 Pack of 10
SGD30.48(exc. GST)
In Stock
Eaton 180A Bolted Tag Fuse, 18 x 56mm, 240 V ac, 150V dc, 41.8mm
  • RS Stock No. 182-1575
  • Mfr. Part No. 180LET
Each
SGD135.71(exc. GST)
1
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