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

49112 Products showing for Fuses & Circuit Breakers

9 of 999+
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-380
Each (In a Pack of 10)
SGD0.602(exc. GST)
Littelfuse PCB Mount Fuse Holder for ATO Fuse, 80V dc
  • RS Stock No. 787-4353
  • Mfr. Part No. 178.6164.0001
Each
SGD4.09(exc. GST)
Eaton 10A Bolted Tag Fuse, F2, 550V ac
  • RS Stock No. 181-8755
  • Mfr. Part No. ESD10
Each
SGD11.62(exc. GST)
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)
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)
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)
Littelfuse 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 787-4300
  • Mfr. Part No. 65600001009
Each (In a Pack of 5)
SGD2.07(exc. GST)
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)
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)
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)
Phoenix Contact Surge Protector, 250V ac, DIN Rail Mount
  • RS Stock No. 801-6211
  • Mfr. Part No. 2950048
Each
SGD64.23(exc. GST)
TE Connectivity Thermal Circuit Breaker - W31 Single Pole 50 V dc, 240V ac Voltage Rating, 7.5A Current Rating
  • RS Stock No. 782-8108
  • Mfr. Part No. W31-X2M1G-7.50
Each
SGD84.83(exc. GST)
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7845
  • Mfr. Part No. C2545E250
Each
SGD2,653.01(exc. GST)
Eaton 25A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 703-8778
  • Mfr. Part No. 25NHG000B-690
Each
SGD8.75(exc. GST)
Eaton 63mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-8667
  • Mfr. Part No. S506-63-R
Each (In a Pack of 10)
SGD0.80(exc. GST)
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)
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)
Eaton xEffect MCB, 3P, 63A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3419
  • Mfr. Part No. 278879 FAZ-C63/3
Each
SGD218.67(exc. GST)
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)
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 232-0250
  • Mfr. Part No. 1SDA067397R1 XT1C 160 TMD 100A FF
Each
SGD375.70(exc. GST)
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