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

271 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9589
  • Mfr. Part No. 3VA10402ED360AA0
Each
PHP20,981.27(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 63A, Type A, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-305
  • Mfr. Part No. 5SY4363-5
Each
PHP27,441.76(exc. VAT)
In Stock
Eaton 10A British Standard Fuse, LCT, 240 V ac, 150V dc, 38mm
  • RS Stock No. 156-8759
  • Mfr. Part No. 10LCT
Each (In a Pack of 5)
PHP230.584(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 5A, 125V ac/dc
  • RS Stock No. 541-3445P
  • Mfr. Part No. 0451005.MRL
Each (Supplied on a Reel)
PHP66.80(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 1P 50A, Breaking Capacity 14 kA, Clip-On
  • RS Stock No. 339-227
  • Mfr. Part No. BDL16050
Each
PHP16,771.94(exc. VAT)
In Stock
Europa RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 153-3466
  • Mfr. Part No. EUBLMC40C30A
Each
PHP4,579.13(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 60A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-704
  • Mfr. Part No. 3VA5160-5EF31-0AA0
Each
PHP39,346.31(exc. VAT)
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 125-091
  • Mfr. Part No. 178823 KLV-12HWS-SF
Each
PHP9,398.13(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 40A Current Rating, 2P Poles, 300mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8788
  • Mfr. Part No. 5SU1654-7KK40
Each
PHP11,712.10(exc. VAT)
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 3 Pole 525V Voltage Rating Clip-On, 70A
  • RS Stock No. 358-215
  • Mfr. Part No. BGL36070LU
Each
PHP79,265.21(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels
  • RS Stock No. 156-658
  • Mfr. Part No. 3VA2225-5JP32-0AA0
Each
PHP159,361.25(exc. VAT)
In Stock
Schurter Fuse Holder Fusedrawer
  • RS Stock No. 867-6857
  • Mfr. Part No. 4303.2403
Each
PHP416.70(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Arrester, DIN Rail Mount
  • RS Stock No. 130-080
  • Mfr. Part No. 2905640
Each
PHP25,531.32(exc. VAT)
Temporarily out of stock
RS PRO PC Board Non Resettable Fuse, Axial 1.25A, 125V ac/dc
  • RS Stock No. 764-9463
Each (In a Pack of 10)
PHP14.426(exc. VAT)
Temporarily out of stock
SENTRON Nut Keeper Kit for use with 3VA52 Series
  • RS Stock No. 263-875
  • Mfr. Part No. 3VA9234-0QA00
1 Kit
PHP3,416.29(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 3 channels
  • RS Stock No. 155-902
  • Mfr. Part No. 3VA2450-6JQ32-0AA0
Each
PHP294,375.72(exc. VAT)
Temporarily out of stock
ABB 50A Tag Fuse, 690V
  • RS Stock No. 250-4389
  • Mfr. Part No. 1SCA022661R9220
1 Box of 3
PHP2,059.41(exc. VAT)
Temporarily out of stock
Bourns SMD Non Resettable Fuse 3.5A, 125V ac
  • RS Stock No. 191-4180
  • Mfr. Part No. SF-2410FP350T-2
Each (On a Reel of 1000)
PHP33.298(exc. VAT)
In Stock
Mersen 6A Slotted Tag Fuse, A1, 250 V dc, 550V ac, 44.5mm
  • RS Stock No. 178-0994
  • Mfr. Part No. G1006578 / BNIT55V6
Each (In a Pack of 10)
PHP269.442(exc. VAT)
In Stock
RS PRO 100A Bolted Tag Fuse, 350 V dc, 690V ac, 63.5mm
  • RS Stock No. 221-3645
Each (In a Pack of 5)
PHP1,188.61(exc. VAT)
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