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

238 of 999+
Eaton 6.3A PCB Mount 5 x 20mm Fuse Block, 250V ac
  • RS Stock No. 169-9491
  • Mfr. Part No. HTC-15M
1 Bag of 1000
PHP14,553.99(exc. VAT)
Siemens SENTRON 5SY Circuit Breaker, 3P, 10A, Type A, 440V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 664-299
  • Mfr. Part No. 5SY4310-5
Each
PHP11,959.91(exc. VAT)
ABB 10A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 251-3440
  • Mfr. Part No. 1SCA022627R1980
1 Box of 3
PHP2,729.98(exc. VAT)
Mersen Surge Protector
  • RS Stock No. 179-3079
  • Mfr. Part No. 83230000 / SP23-20K-N
Each
PHP2,608.21(exc. VAT)
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-280
  • Mfr. Part No. 3VA5220-5EC31-0AA0
Each
PHP91,905.00(exc. VAT)
Schurter Surface Mount Fuse 125mA, 125V ac
  • RS Stock No. 270-7970
  • Mfr. Part No. 7010.9760.63
Each
PHP82.69(exc. VAT)
Siemens SENTRON 5SY6 MCB, 2P, 5A Curve C, 400V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-333
  • Mfr. Part No. 5SY6211-7
Each
PHP7,227.31(exc. VAT)
Mersen 40A Bolted Tag Fuse, A4C, 240 V dc, 415V ac, 94mm
  • RS Stock No. 178-1037
  • Mfr. Part No. Z1045280 / BTCP42V40/10
Each (In a Pack of 10)
PHP1,357.477(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7794
  • Mfr. Part No. C16L3
Each
PHP76,731.63(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 200A, Fixed Mount
  • RS Stock No. 260-7926
  • Mfr. Part No. C25H4TM200
Each
PHP183,942.60(exc. VAT)
Mersen NH Fuse Puller, Sizes 00 → 3
  • RS Stock No. 136-0623
  • Mfr. Part No. P215592 / NHHANDLE
Each
PHP4,802.56(exc. VAT)
Littelfuse SMD Non Resettable Fuse 250mA, 32V
  • RS Stock No. 895-1619
  • Mfr. Part No. 0467.250NR
Each (In a Pack of 10)
PHP45.20(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IEG66 2 Pole Panel Mount, 35A Current Rating
  • RS Stock No. 275-0208
  • Mfr. Part No. IEG66-1-51-35.0-A-01-V
Each
PHP6,208.49(exc. VAT)
Schneider Electric, PowerPact MCCB 3P 225A, Breaking Capacity 14 kA, DIN Rail Mount
  • RS Stock No. 341-442
  • Mfr. Part No. NJDF36225TW
Each
PHP223,887.82(exc. VAT)
Siemens SENTRON 5SJ4106 MCB, 1P, 6A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-008
  • Mfr. Part No. 5SJ4106-8HG42
Each
PHP4,743.22(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4087
  • Mfr. Part No. 3VA2116-7HL32-0AA0
Each
PHP85,600.47(exc. VAT)
Omron Busbar
  • RS Stock No. 111-3542
  • Mfr. Part No. PYDN-31.0-080Y
Each
PHP378.04(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9560
  • Mfr. Part No. 3VA10202ED320AA0
Each
PHP20,968.06(exc. VAT)
10A Tag Fuse, 22 x 86mm, 0.46/0.66kV, 73mm
  • RS Stock No. 263-407
  • Mfr. Part No. TIA10
1 Pack of 20
PHP13,385.37(exc. VAT)
Hager CDB RCD Switch, 25A, 4 Pole, 30mA, Type B, 230 → 400V
  • RS Stock No. 599-739
  • Mfr. Part No. CDB725F
Each
PHP76,424.86(exc. VAT)
1
238
1676
Results per page

Related links