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

33502 Products showing for Fuses & Circuit Breakers

304 of 999+
Temporarily out of stock
Mersen 20A FF Cartridge Fuse, 14 x 51mm
  • RS Stock No. 136-0581
  • Mfr. Part No. F1017203 / FR14GR69V20
Each
PHP979.59(exc. VAT)
In Stock
Bourns 70A Tag Fuse, 66mm, 500V ac, 24.1mm
  • RS Stock No. 254-4201
  • Mfr. Part No. PF-JT3-70
Each
PHP1,887.94(exc. VAT)
In Stock
Eaton 125A Bolted Tag Fuse, 18 x 56mm, 150 V dc, 240 V ac, 41mm
  • RS Stock No. 182-1771
  • Mfr. Part No. 125LET
Each
PHP1,591.01(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 1P 110A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-511
  • Mfr. Part No. 3VA5111-6ED11-0AA0
Each
PHP18,301.49(exc. VAT)
In Stock
Siemens 25A D02 Neozed Fuse, gR, 400V
  • RS Stock No. 202-7074
  • Mfr. Part No. 5SE1325
Each (In a Pack of 10)
PHP1,307.833(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-844
  • Mfr. Part No. 3VA6115-6HL31-0AA0
Each
PHP99,702.82(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 3P, 70A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-199
  • Mfr. Part No. 2CCS863017R0705
Each
PHP26,393.27(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-842
  • Mfr. Part No. 3VA5225-6ED41-0AA0
Each
PHP154,219.50(exc. VAT)
In Stock
Eaton RCD, 63A, 4 Pole, 300mA, Type A
  • RS Stock No. 922-8689
  • Mfr. Part No. 235445 PFIM-63/4/03-A-MW
Each
PHP15,298.40(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4818
  • Mfr. Part No. 3VA2563-6KQ32-0AA0
Each
PHP332,109.01(exc. VAT)
Temporarily out of stock
Siemens Siemens Busbar
  • RS Stock No. 627-191
  • Mfr. Part No. 8PQ6000-7BA06
Each
PHP42,410.00(exc. VAT)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 3.15A, 125V ac
  • RS Stock No. 226-0787
  • Mfr. Part No. 3951315000
Each (In a Pack of 10)
PHP85.50(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4325 MCB, 3P, 25A Curve C, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 299-947
  • Mfr. Part No. 5SJ4325-7HG41
Each
PHP17,755.74(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 655-277
  • Mfr. Part No. C080H3WM
Each
PHP164,025.84(exc. VAT)
In Stock
Eaton 3.8A Resettable Fuse, 6V
  • RS Stock No. 225-8276
  • Mfr. Part No. PTSLR12106V380
1 Reel of 3000
PHP57,600.00(exc. VAT)
Temporarily out of stock
Siemens 630A Centred Tag Fuse, NH3, 690V
  • RS Stock No. 210-6966
  • Mfr. Part No. 3NE1436-2
Each (In a Pack of 3)
PHP16,858.923(exc. VAT)
Temporarily out of stock
Siemens SENTRON Nut Keeper Kit for use with 3VA2
  • RS Stock No. 269-7131
  • Mfr. Part No. 3VA9224-0QG00
Each (In a Pack of 4)
PHP1,317.158(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4302 MCB, 3P, 2A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-771
  • Mfr. Part No. 5SJ4302-7HG42
Each
PHP22,974.78(exc. VAT)
Temporarily out of stock
Eaton 500A Tag Fuse, 3L, 1kV, 205mm
  • RS Stock No. 282-6536
  • Mfr. Part No. PV-500A-3L
Each
PHP55,932.06(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 4P 100A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-215
  • Mfr. Part No. C10H47E100
Each
PHP394,630.18(exc. VAT)
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