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

175 of 999+
In Stock
Eaton 20A Bolted Tag Fuse, F2, 415V ac
  • RS Stock No. 181-8554
  • Mfr. Part No. NSD20M32
1 Box of 20
PHP7,139.46(exc. VAT)
In Stock
Littelfuse 0.25A Resettable Fuse, 240V ac/dc
  • RS Stock No. 869-7362
  • Mfr. Part No. LVR025K-2
Each (In a Bag of 10)
PHP35.719(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 600A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9797
  • Mfr. Part No. LV563309
Each
PHP175,291.91(exc. VAT)
Temporarily out of stock
Siemens 200A Tag Fuse, 149 x 72 x 62mm, 400V
  • RS Stock No. 269-7032
  • Mfr. Part No. 3NA3240-4KK04
Each
PHP16,061.84(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 2P, 63A Curve D, 400V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-482
  • Mfr. Part No. 5SY8263-8BB08
Each
PHP8,291.23(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1704
  • Mfr. Part No. 3VA2040-5KP36-0AA0
Each
PHP87,966.17(exc. VAT)
In Stock
Contactum RCBO, 32A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type B, CCPBR Range
  • RS Stock No. 240-6401
  • Mfr. Part No. CCPBR1032AB
Each
PHP3,013.40(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 3m, 40A, Canalis Series
  • RS Stock No. 211-0362
  • Mfr. Part No. KBA40ED2300W
Each (In a Pack of 6)
PHP6,860.392(exc. VAT)
Temporarily out of stock
Siemens SENTRON Adapter
  • RS Stock No. 161-889
  • Mfr. Part No. 3VA9980-0LF30
Each
PHP6,693.29(exc. VAT)
In Stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-8093
  • Mfr. Part No. C40F3TM250D
Each
PHP134,359.86(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA
  • RS Stock No. 209-6900
  • Mfr. Part No. 3VA2063-5KP42-0AA0
Each
PHP99,465.10(exc. VAT)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6345
  • Mfr. Part No. C16F3TM160
Each
PHP77,279.25(exc. VAT)
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure, 2 Way
  • RS Stock No. 125-103
  • Mfr. Part No. 178832 KLV-48UPM-F
Each
PHP23,087.20(exc. VAT)
Temporarily out of stock
Eaton MCB, 4P, 2A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 244-022
  • Mfr. Part No. 101350 PLI-B2/4
Each
PHP11,436.50(exc. VAT)
Temporarily out of stock
Siemens SENTRON Universal Release for use with 3VA1 and 3VA20-26
  • RS Stock No. 155-332
  • Mfr. Part No. 3VA9908-0BD11
Each
PHP19,182.37(exc. VAT)
Temporarily out of stock
63A NH Fuse, 63 x 40 x 135mm, 690V ac
  • RS Stock No. 262-770
  • Mfr. Part No. 63NHG1B-690
1 Pack of 3
PHP2,377.60(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 50mA, 250V ac
  • RS Stock No. 284-4969
  • Mfr. Part No. 0034.6001
Each (In a Pack of 10)
PHP51.084(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with XT4
  • RS Stock No. 236-6876
  • Mfr. Part No. 1SDA100287R1 Ekip LSI 250A XT4 3p
Each
PHP107,499.54(exc. VAT)
Temporarily out of stock
ABB 4 Phase Industrial Surge Protector, 100kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 237-6638
  • Mfr. Part No. 2CTB802346R2900
Each
PHP47,755.79(exc. VAT)
In Stock
ABB RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity
  • RS Stock No. 231-9936
  • Mfr. Part No. 2CSR255151R1205 DSE201 B20 A30
Each
PHP5,430.77(exc. VAT)
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