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
Fuses - PCB
Fuses - PCB

33476 Products showing for Fuses & Circuit Breakers

80 of 999+
In Stock
Eaton 50A British Standard Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 156-8967
  • Mfr. Part No. 50FE
Each
PHP3,330.75(exc. VAT)
Temporarily out of stock
Schneider Electric QO110C10RCB RCCB, 10A, 1 Pole, Type C, 240V
  • RS Stock No. 214-755
  • Mfr. Part No. QO110C10RCBO30F
Each
PHP32,848.26(exc. VAT)
Temporarily out of stock
Schneider Electric Resi9 R9F2 MCB, 3P, 16A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 212-209
  • Mfr. Part No. R9F28316
Each
PHP3,131.71(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7488
  • Mfr. Part No. C10W35E100
Each
PHP183,753.17(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 7A, 125V ac/dc
  • RS Stock No. 219-6153
  • Mfr. Part No. 0154007.DR
Each (In a Pack of 10)
PHP81.473(exc. VAT)
In Stock
Eaton RCD, 32A, 2 Pole, 30mA, Type C
  • RS Stock No. 922-8752
  • Mfr. Part No. 236305 PKNM-32/1N/C/003-MW
Each
PHP7,374.80(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 3A, 32V
  • RS Stock No. 820-7054
  • Mfr. Part No. 0437003.WR
Each (In a Pack of 100)
PHP53.317(exc. VAT)
Temporarily out of stock
RS PRO 5A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 284-6487
Each (In a Pack of 10)
PHP146.223(exc. VAT)
Temporarily out of stock
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 4 channels
  • RS Stock No. 156-789
  • Mfr. Part No. 3VA2450-5JP42-0AF0
Each
PHP321,673.51(exc. VAT)
Temporarily out of stock
ABB RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 237-3390
  • Mfr. Part No. 2CSR252001R1404
Each
PHP17,818.70(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 250A
  • RS Stock No. 250-4215
  • Mfr. Part No. 1SDA054510R1
Each
PHP208,705.41(exc. VAT)
In Stock
Siemens 80A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-664
  • Mfr. Part No. 3NA3824
Each (In a Pack of 3)
PHP1,342.15(exc. VAT)
In Stock
SIBA Surface Mount Fuse Clip for 10 x 38mm
  • RS Stock No. 247-4071
  • Mfr. Part No. 10X38CLIPS
Each
PHP242.92(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 160mA, 250 V ac, 125V dc
  • RS Stock No. 703-2685
  • Mfr. Part No. 3403.0158.24
Each (In a Bag of 10)
PHP55.238(exc. VAT)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Arrester, DIN Rail Mount
  • RS Stock No. 129-563
  • Mfr. Part No. 2858959
Each
PHP28,766.30(exc. VAT)
In Stock
Siemens SENTRON Connection Unit for use with For Circuit Breaker
  • RS Stock No. 265-635
  • Mfr. Part No. 8US1921-1CC02
Each
PHP4,906.61(exc. VAT)
Temporarily out of stock
Eaton 100A NH Fuse, 63 x 40 x 135mm, 690V ac
  • RS Stock No. 247-091
  • Mfr. Part No. 100NHG1B-690
1 Pack of 3
PHP2,350.23(exc. VAT)
Temporarily out of stock
Eaton 125A NH Fuse, 58 x 30 x 79mm, 400V ac
  • RS Stock No. 241-505
  • Mfr. Part No. 125NHG00B-400
1 Pack of 3
PHP1,277.71(exc. VAT)
In Stock
Schneider Electric, ComPacT NSX MCCB 3P 250A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-704
  • Mfr. Part No. IL2503P36
Each
PHP81,005.99(exc. VAT)
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 125-094
  • Mfr. Part No. 178826 KLV-36HWS-F
Each
PHP12,875.63(exc. VAT)
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