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

167 of 999+
In Stock
Wickmann Resettable Fuse, 125V ac/dc
  • RS Stock No. 174-0762
  • Mfr. Part No. 0251.750MAT1L
Each (In a Pack of 10)
PHP37.719(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 4P 250A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-341
  • Mfr. Part No. C25B47E250
Each
PHP577,900.59(exc. VAT)
Temporarily out of stock
ABB RCBO, 13A Current Rating, 2P Poles, Type C
  • RS Stock No. 237-5136
  • Mfr. Part No. 2CSR272001R1134
Each
PHP17,079.54(exc. VAT)
In Stock
Eaton RCD, 40A, 4 Pole, 30mA, Type A, 230/400V ac
  • RS Stock No. 922-8664
  • Mfr. Part No. 235439 PFIM-40/4/003-A-MW
Each
PHP15,488.04(exc. VAT)
In Stock
Schneider Electric Single Phase Surge Arrester, 65kA, 350V (Volts), Clip-On Mount
  • RS Stock No. 130-970
  • Mfr. Part No. A9L65301
Each
PHP71,754.33(exc. VAT)
In Stock
Siemens Sentron Copper Rod for use with Busbar
  • RS Stock No. 228-8263
  • Mfr. Part No. 8WC5123
Each
PHP5,081.60(exc. VAT)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with 3VA15/25 1000
  • RS Stock No. 269-7225
  • Mfr. Part No. 3VA9603-0QB00
Each (In a Pack of 3)
PHP3,841.08(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 250 DC
  • RS Stock No. 260-7853
  • Mfr. Part No. C254TM250D
Each
PHP53,997.27(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA1 400/630, 3VA2 400/630
  • RS Stock No. 269-7190
  • Mfr. Part No. 3VA9404-0JC23
Each (In a Pack of 4)
PHP4,773.26(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 100A, Breaking Capacity 50 kA, DIN Rail Mount
  • RS Stock No. 178-7988
  • Mfr. Part No. LV426787
Each
PHP75,746.49(exc. VAT)
In Stock
MECATRACTION Brass Earth Clamp Max. Conductor Size 2 x 120mm 43mm
  • RS Stock No. 299-101
  • Mfr. Part No. SE2-120
Each (In a Box of 10)
PHP1,268.279(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 230-689
  • Mfr. Part No. 111730 NZMN3-VE630-BT
Each
PHP241,119.55(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 630A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 230-673
  • Mfr. Part No. 111658 NZMN3-4-AE630-BT
Each
PHP294,416.57(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 70 kA
  • RS Stock No. 209-7027
  • Mfr. Part No. 3VA1196-6EE32-0AA0
Each
PHP19,733.50(exc. VAT)
Temporarily out of stock
Eaton 500A Centred Tag Fuse, NH2, 440V ac
  • RS Stock No. 182-1759
  • Mfr. Part No. 500NHG2B
Each
PHP1,981.22(exc. VAT)
In Stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX160
  • RS Stock No. 260-7717
  • Mfr. Part No. C163TM160
Each
PHP25,750.47(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 800A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 655-145
  • Mfr. Part No. C080N420FM
Each
PHP286,603.51(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 655-143
  • Mfr. Part No. C063N450FM
Each
PHP315,736.23(exc. VAT)
In Stock
Eaton 16A Bolted Tag Fuse, 9 x 73mm, 690V ac, 64.3mm
  • RS Stock No. 182-1669
  • Mfr. Part No. 16FC
Each
PHP884.35(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-9481
  • Mfr. Part No. C10H4TM063
Each
PHP64,031.43(exc. VAT)
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