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

33493 Products showing for Fuses & Circuit Breakers

118 of 999+
Sensata Airpax Airpax Thermal Circuit Breaker - IEG6 Single Pole Panel Mount, 30A Current Rating
  • RS Stock No. 275-0198
  • Mfr. Part No. IEG6-1-51-30.0-A-01-V
1 Box of 5
PHP15,911.28(exc. VAT)
Wickmann PC Board Non Resettable Fuse, Radial 3.15A, 125V ac
  • RS Stock No. 226-0787
  • Mfr. Part No. 3951315000
Each (In a Pack of 10)
PHP85.50(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-572
  • Mfr. Part No. 3VA5130-5EC31-1AA0
Each
PHP27,827.72(exc. VAT)
Schneider Electric TeSys Auxiliary Contact for use with GV2/GV3 (Except GV3ME)
  • RS Stock No. 211-945
  • Mfr. Part No. GVAED0113
Each
PHP2,405.30(exc. VAT)
Siemens 5SV33 RCCB, 80A, 4 Pole, 30mA, Type B, 440V
  • RS Stock No. 328-471
  • Mfr. Part No. 5SV3347-4KK60
Each
PHP167,888.83(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IEG6 Single Pole Panel Mount, 45A Current Rating
  • RS Stock No. 275-0201
  • Mfr. Part No. IEG6-1-51-45.0-A-01-V
Each
PHP3,636.86(exc. VAT)
ABB 125A Tag Fuse, 79 x 30 x 60mm, 500V
  • RS Stock No. 250-4398
  • Mfr. Part No. 1SCA022697R3070
1 Box of 3
PHP3,353.46(exc. VAT)
ABB RCBO, 40A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6919
  • Mfr. Part No. 2CSR255180R1407
Each
PHP12,297.57(exc. VAT)
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8738
  • Mfr. Part No. 5SU1324-6FA16
Each
PHP13,208.69(exc. VAT)
Eaton 63A Fuse Holder for 126 x 62 x 36mm Fuse, 1P, 690V
  • RS Stock No. 261-317
  • Mfr. Part No. CM63FW
1 Pack of 10
PHP27,065.48(exc. VAT)
Limitor Thermal Fuse +94°C 15 A, 250V ac
  • RS Stock No. 797-6049
  • Mfr. Part No. SF 090 R
Each (In a Pack of 10)
PHP72.129(exc. VAT)
Bourns 2.5A Resettable Fuse, 15V
  • RS Stock No. 647-8099
  • Mfr. Part No. MF-SM250-2
Each (In a Pack of 10)
PHP29.106(exc. VAT)
ABB System Pro M Compact S200 MCB, 1P, 1A, Type Z, 230/400V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-714
  • Mfr. Part No. 2CDS251001R0218
Each
PHP6,590.78(exc. VAT)
Fuse/SMD 30VDC 1.5 A
  • RS Stock No. 565-485
  • Mfr. Part No. 2920L075DR
Each
PHP6,383.75(exc. VAT)
HENSEL ENYBOARD Distribution Board, 41 A
  • RS Stock No. 117-788
  • Mfr. Part No. RK 0612 T
Each
PHP4,179.23(exc. VAT)
Europa Busbar
  • RS Stock No. 849-6285
  • Mfr. Part No. ECUBB18
Each
PHP709.65(exc. VAT)
Siemens ALPHA Busbar
  • RS Stock No. 226-0831
  • Mfr. Part No. 8GK9733-0KK10
Each
PHP1,100.58(exc. VAT)
Siemens 63A Tag Fuse, NH1, 400V ac
  • RS Stock No. 143-912
  • Mfr. Part No. 3NA6122-4
1 Pack of 3
PHP2,912.69(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7863
  • Mfr. Part No. C25B3TM125
Each
PHP76,332.94(exc. VAT)
Schneider Electric, PowerPact MCCB 2P 90A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 345-260
  • Mfr. Part No. BDL26090LU
Each
PHP46,121.35(exc. VAT)
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