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

105 of 999+
Better World
Schneider Electric 25A 356x167mm Fuse Block, 230 - 690V
  • RS Stock No. 219-8946
  • Mfr. Part No. KSB25SD4
Each
PHP45,522.14(exc. VAT)
RS PRO Three Phase Industrial Surge Protector, 50kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 101-741
Each
PHP12,014.69(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-7479
  • Mfr. Part No. C10V4TM063
Each
PHP108,903.42(exc. VAT)
Eaton PC Board Non Resettable Fuse, Radial 2.5A, 250V ac
  • RS Stock No. 169-9497
  • Mfr. Part No. SR-5-2-5A-BK
Each (In a Bag of 200)
PHP86.173(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7581
  • Mfr. Part No. C11E4TM080L
Each
PHP37,636.12(exc. VAT)
HENSEL ENYSTAR Distribution Board, 16 Way, 63 A
  • RS Stock No. 117-269
  • Mfr. Part No. FP VN 1600 GB
Each
PHP149,941.75(exc. VAT)
Schneider Electric Acti9 3, 3+N Phase Distribution Board, 22 Way, 250 A
  • RS Stock No. 654-761
  • Mfr. Part No. SEA9BPN10AFD12
Each
PHP82,829.34(exc. VAT)
Siemens 63A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1130
  • Mfr. Part No. 5SE2363
Each (In a Pack of 10)
PHP291.319(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 20A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 211-3721
  • Mfr. Part No. 3VA1120-4EE42-0AA0
Each
PHP31,677.50(exc. VAT)
Better World
Siemens RCBO, 125A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6178
  • Mfr. Part No. 5SU1324-7KK82
Each
PHP148,878.53(exc. VAT)
Siemens 63A Centred Tag Fuse, NH1, 1kV
  • RS Stock No. 230-2980
  • Mfr. Part No. 3NE1218-4
Each (In a Pack of 2)
PHP11,390.375(exc. VAT)
Fuse - Strip 60 w/ Housing 48VDC, 400A
  • RS Stock No. 522-972
  • Mfr. Part No. 157.5701.6401
1 Bag of 25
PHP29,055.29(exc. VAT)
Eaton 160A British Standard Fuse, A4, 660V ac, 93.7mm
  • RS Stock No. 415-266
  • Mfr. Part No. TCP100M160
Each
PHP2,032.51(exc. VAT)
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6274
  • Mfr. Part No. C103TM100D
Each
PHP16,189.19(exc. VAT)
Siemens 450A German Standard Fuse, NH2, 800V
  • RS Stock No. 210-6980
  • Mfr. Part No. 3NE4333-0B
Each (In a Pack of 3)
PHP13,136.907(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3866
  • Mfr. Part No. 3VA2063-7HN36-0AA0
Each
PHP73,676.31(exc. VAT)
Better World
Siemens RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 151-1204
  • Mfr. Part No. 5SU1354-7KK40
Each
PHP11,712.10(exc. VAT)
Eaton xEffect RCCB, 16A, 2 Pole, 300mA, Type F, 240V ac
  • RS Stock No. 248-938
  • Mfr. Part No. 187395 FRCMM-16/2/03-S/F
Each
PHP20,600.36(exc. VAT)
Eaton xEffect - FBSmV RCCB, 40A, 3 Pole, 100mA, Type S, 240/415V ac
  • RS Stock No. 121-142
  • Mfr. Part No. 170146 FBSMV-40/3/01-S
Each
PHP13,680.30(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-524
  • Mfr. Part No. 3VA5112-1MU31-0AA0
Each
PHP72,456.53(exc. VAT)
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