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

154 of 999+
Better World
Schneider Electric RCBO, 40A Current Rating, 3P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3354
  • Mfr. Part No. A9DV7740
Each
PHP31,190.17(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-7453
  • Mfr. Part No. C10V35E040
Each
PHP176,839.58(exc. VAT)
Littelfuse 1.85A Resettable Fuse, 72V
  • RS Stock No. 517-6720
  • Mfr. Part No. RXEF185
Each (In a Pack of 10)
PHP27.918(exc. VAT)
Eaton PC Board Non Resettable Fuse, Radial 250mA, 250V ac
  • RS Stock No. 169-9496
  • Mfr. Part No. SR-5-250MA-BK
Each (In a Bag of 200)
PHP39.975(exc. VAT)
Siemens SENTRON 3 Phase Busbar, 36mm Pitch
  • RS Stock No. 187-5167
  • Mfr. Part No. 5ST3615-1
Each
PHP738.67(exc. VAT)
ABB, Tmax MCCB 3P 400A, Fixed Mount
  • RS Stock No. 237-5962
  • Mfr. Part No. 1SDA054323R1 T5N400 FF PR222-LSIG 400A
Each
PHP98,857.95(exc. VAT)
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 8A Curve C, 230V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-539
  • Mfr. Part No. 5SL6008-7
Each
PHP5,564.30(exc. VAT)
Schurter SMD Non Resettable Fuse 15A, 125V ac/dc
  • RS Stock No. 209-9409
  • Mfr. Part No. 3-122-718
Each
PHP221.64(exc. VAT)
Schneider Electric, ComPacT New generation MCCB 3P 50A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-216
  • Mfr. Part No. C11B34V050B
Each
PHP167,522.64(exc. VAT)
Siemens SENTRON Adapter for use with Circuit Breaker 3VA5/6
  • RS Stock No. 272-0219
  • Mfr. Part No. 3VA9347-0LF10
Each
PHP7,511.08(exc. VAT)
Schurter PC Board Non Resettable Fuse, Radial 2.5A, 250V ac
  • RS Stock No. 284-5142
  • Mfr. Part No. 0034.6018
Each (In a Pack of 10)
PHP39.392(exc. VAT)
Siemens, SENTRON MCCB 3P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 148-025
  • Mfr. Part No. 3VA5217-7EF31-0AA0
Each
PHP122,183.59(exc. VAT)
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-866
  • Mfr. Part No. 3VA5225-7GF41-0AA0
Each
PHP176,569.98(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 110A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 230-238
  • Mfr. Part No. 107644 NZMN2-AF110-BT-NA
Each
PHP89,292.68(exc. VAT)
ABB S302 MCB, 2P, 10A Curve C, 415V AC, 125V DC, 25 kA Breaking Capacity
  • RS Stock No. 200-745
  • Mfr. Part No. 2CDS382001R0104
Each
PHP15,164.77(exc. VAT)
Eaton 30A Fuse Holder, 3P, 600V ac/dc
  • RS Stock No. 261-310
  • Mfr. Part No. CHCC3DU
1 Pack of 4
PHP6,593.77(exc. VAT)
Siemens SIRIUS Busbar Adapter
  • RS Stock No. 211-5949
  • Mfr. Part No. 3RA2942-1AA00
Each
PHP2,871.78(exc. VAT)
Phoenix Contact Surge Protector, 20kA, 5V dc, On Base Element Mount
  • RS Stock No. 282-5138
  • Mfr. Part No. 2838762
Each (In a Pack of 10)
PHP11,753.722(exc. VAT)
Mersen 125A NH Fuse, NH000, 690V ac
  • RS Stock No. 448-3550
  • Mfr. Part No. M330038
Each
PHP5,435.30(exc. VAT)
Siemens 63A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 203-2039
  • Mfr. Part No. 3NA7822
Each (In a Pack of 3)
PHP419.30(exc. VAT)
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