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

290 of 999+
In Stock
Littelfuse SMD Non Resettable Fuse 500mA, 125V ac/dc
  • RS Stock No. 219-6074
  • Mfr. Part No. 0154.500DR
Each (In a Pack of 10)
PHP102.704(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 4P 70A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-071
  • Mfr. Part No. BGF46070
Each
PHP96,623.77(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA2
  • RS Stock No. 269-7057
  • Mfr. Part No. 3VA9104-0JG11
Each (In a Pack of 4)
PHP990.84(exc. VAT)
Temporarily out of stock
ABB 50A Tag Fuse, 135 x 30 x 65mm, 690V
  • RS Stock No. 250-4462
  • Mfr. Part No. 1SCA022700R9610
1 Box of 3
PHP4,884.43(exc. VAT)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-565
  • Mfr. Part No. 3VW9011-0AL02
1 Kit
PHP6,649.30(exc. VAT)
Temporarily out of stock
Eaton 63A Bolted Tag Fuse, 250 V dc, 500V ac, 111mm
  • RS Stock No. 181-8483
  • Mfr. Part No. BD63
1 Box of 20
PHP16,235.82(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60N MCB, 4P, 20A Curve C, 12 → 440V AC, 220 → 250V DC, 6 kA Breaking Capacity
  • RS Stock No. 806-7357
  • Mfr. Part No. A9F44420
Each
PHP16,950.71(exc. VAT)
In Stock
Eaton 10A British Standard Fuse, 240V ac, 37.4mm
  • RS Stock No. 414-724
  • Mfr. Part No. GSA10
Each (In a Pack of 5)
PHP1,733.572(exc. VAT)
Temporarily out of stock
Hager CDC RCD Switch, 40A, 2 Pole, 30mA, Type AC, 127 → 230V
  • RS Stock No. 599-830
  • Mfr. Part No. CDC749F
Each
PHP7,233.09(exc. VAT)
In Stock
Socomec 315 Centred Tag Fuse, S2
  • RS Stock No. 223-2858
  • Mfr. Part No. 67220315
Each (In a Pack of 3)
PHP2,137.30(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M S201M Circuit Breaker, 1+N, 2A Curve C, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6388
  • Mfr. Part No. 2CDS271103R0024
Each
PHP4,726.07(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FRCdM RCCB, 40A, 4 Pole, 30mA, 240/415V ac
  • RS Stock No. 120-916
  • Mfr. Part No. 167881 FRCDM-40/4/003-G/B+
Each
PHP68,245.23(exc. VAT)
Temporarily out of stock
Contactum 14 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9107
  • Mfr. Part No. DD141MS
Each
PHP7,997.17(exc. VAT)
Temporarily out of stock
Eaton xEffect xEffect - FAZ-T MCB, 3P, 40A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 129-089
  • Mfr. Part No. 142500 FAZT-D40/3
Each
PHP19,054.64(exc. VAT)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-380
  • Mfr. Part No. KV 8109
Each
PHP3,628.41(exc. VAT)
Temporarily out of stock
Siemens Surge Arrester
  • RS Stock No. 226-1626
  • Mfr. Part No. 5SD7424-2
Each
PHP22,186.39(exc. VAT)
Temporarily out of stock
Schneider Electric TransferPacT Extension Terminal for use with Circuit Breaker
  • RS Stock No. 276-2391
  • Mfr. Part No. TPSCON36
Each
PHP9,695.87(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 10A Curve B, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 246-144
  • Mfr. Part No. 132778 FAZ-B10/3-RT
Each
PHP12,389.54(exc. VAT)
Temporarily out of stock
Eaton RCBO, 16A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type D, FRBdM Range
  • RS Stock No. 121-243
  • Mfr. Part No. 168225 FRBDM-D16/2/01-G/A
Each
PHP13,707.08(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 272-0186
  • Mfr. Part No. 3VA1580-5MH32-0AA0
Each
PHP185,069.36(exc. VAT)
1
290
1676
Results per page

Related links