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

47305 Products showing for Fuses & Circuit Breakers

1 of 999+
有庫存
Hinode Electric Co Ltd 100A Bolted Tag Fuse, 61mm
  • RS Stock No. 103-4250
  • Mfr. Part No. 660GH-100
個 (每包:5個)
TWD694.40(exc. VAT)
有庫存
RS PRO PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 767-5207
個 (每包:10個)
TWD5.00(exc. VAT)
有庫存
RS PRO PC Board Non Resettable Fuse, Radial 1.25A, 250V ac
  • RS Stock No. 767-5204
個 (每包:10個)
TWD13.80(exc. VAT)
最後的 RS 庫存
Schurter PC Board Non Resettable Fuse, Axial 2.5A, 125V ac/dc
  • RS Stock No. 110-8515
  • Mfr. Part No. 7010.7100.13
個 (每包:5個)
TWD41.00(exc. VAT)
有庫存
Siemens 63A Bottle Fuse Holder, 1P, 400V ac
  • RS Stock No. 622-0711
  • Mfr. Part No. 5SG1701
個
TWD392.00(exc. VAT)
有庫存
ETI 20A D02 Neozed Fuse, E18 Thread Size, gG, 400V ac
  • RS Stock No. 415-985
  • Mfr. Part No. 2212001
個 (每包:5個)
TWD35.20(exc. VAT)
有庫存
RS PRO 16A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2517
個 (每包:5個)
TWD121.20(exc. VAT)
有庫存
Eaton 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3037
  • Mfr. Part No. BK-GMA-3-R
個
TWD20.00(exc. VAT)
暫時缺貨
Siemens 100A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 230-2950
  • Mfr. Part No. 3NA6130-6
個 (每包:3個)
TWD2,700.30(exc. VAT)
有庫存
Schurter 16A Panel Mount Fuse Holder for 6.3 x 32, 5 x 20mm Fuse, 1P, 500V ac
  • RS Stock No. 866-3586
  • Mfr. Part No. 0031.2303
個
TWD416.00(exc. VAT)
有庫存
Sato Parts 5A PCB Mount Fuse Holder for 5 x 20mm Fuse, 125V ac
  • RS Stock No. 523-4927
  • Mfr. Part No. F-60-A
個
TWD56.00(exc. VAT)
有庫存
RS PRO 10A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3691
個 (每包:10個)
TWD91.20(exc. VAT)
有庫存
Littelfuse SMD Non Resettable Fuse 4A, 125V ac/dc
  • RS Stock No. 541-3423
  • Mfr. Part No. 0451004.MRL
個 (每包:10個)
TWD26.40(exc. VAT)
有庫存
TE Connectivity Thermal Circuit Breaker - W92 2 Pole 277V ac Voltage Rating, 30A Current Rating
  • RS Stock No. 782-7899
  • Mfr. Part No. W92-X112-30
個
TWD3,379.00(exc. VAT)
有庫存
RS PRO MCB, 1P, 3A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0191
個
TWD309.00(exc. VAT)
有庫存
ETA Thermal Circuit Breaker - 3120-N 5 Pole 50 V DC, 240 V AC Voltage Rating, 3A Current Rating
  • RS Stock No. 210-2090
  • Mfr. Part No. 3120-N551-H7T1-W02D-3A
個
TWD957.00(exc. VAT)
有庫存
ABB 36 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1909
  • Mfr. Part No. 1SL1205A00 65P18X22
個
TWD3,150.00(exc. VAT)
有庫存
Eaton 6A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-268
  • Mfr. Part No. C10G6 CYLINDRICAL FUSE 10 x 38 6A GG 500V AC
1 盤 10 套
TWD376.00(exc. VAT)
暫時缺貨
Eaton 8A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-180
  • Mfr. Part No. C10G8 CYLINDRICAL FUSE 10 x 38 8A GG 500V AC
1 盤 10 套
TWD376.00(exc. VAT)
有庫存
Schurter PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 284-5300
  • Mfr. Part No. 0034.6612
個 (每包:10個)
TWD11.00(exc. VAT)
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