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

33503 Products showing for Fuses & Circuit Breakers

325 of 999+
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 18.5 kA, Plug In
  • RS Stock No. 229-906
  • Mfr. Part No. 113200 NZMB2-S160-SVE
Each
PHP70,745.02(exc. VAT)
In Stock
Mersen 160A German Standard Fuse, 30, 700V, 77mm
  • RS Stock No. 304-2259
  • Mfr. Part No. J300112
Each
PHP11,302.49(exc. VAT)
Temporarily out of stock
Mersen 32A Offset Tag Fuse, F1, 250 V dc, 550V ac
  • RS Stock No. 178-1010
  • Mfr. Part No. S1019215 / BNS55V32
Each (In a Pack of 10)
PHP298.939(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-734
  • Mfr. Part No. A9DC4632
Each
PHP26,990.11(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 18.5 kA, Plug In
  • RS Stock No. 230-855
  • Mfr. Part No. 113011 NZMB2-4-AF125-BT-NA
Each
PHP95,670.72(exc. VAT)
Currently unavailable
Eaton PC Board Non Resettable Fuse, Radial 3.15A, 250V ac
  • RS Stock No. 169-9516
  • Mfr. Part No. SR-5F-3-15A-BK
Each (In a Bag of 200)
PHP88.673(exc. VAT)
In Stock
Eaton 40A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8642
  • Mfr. Part No. 40NHG000B
Each
PHP347.06(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 225A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-344
  • Mfr. Part No. 3VA5222-7ED41-2AA0
Each
PHP183,275.25(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-381
  • Mfr. Part No. C063N35EFM
Each
PHP674,524.79(exc. VAT)
Temporarily out of stock
ABB RCBO, 16A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6868
  • Mfr. Part No. 2CSR255080R2164 DS201 C16 AC100
Each
PHP6,953.62(exc. VAT)
Temporarily out of stock
Eaton 25A 6.3 x 32mm Fuse Block, 250V ac
  • RS Stock No. 233-0604
  • Mfr. Part No. BK2-S-4202-1X-R
Each (In a Pack of 10)
PHP96.824(exc. VAT)
In Stock
ABB SU200 M MCB, 2P, 63A Curve C, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-631
  • Mfr. Part No. 2CDS272337R0634
Each
PHP28,318.52(exc. VAT)
Temporarily out of stock
Eaton 3.7A Resettable Fuse, 6V
  • RS Stock No. 225-8297
  • Mfr. Part No. PTSLR18126V370
Each (In a Pack of 10)
PHP49.896(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 1P, 200mA Curve K, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-120
  • Mfr. Part No. 2CDS271337R0087
Each
PHP8,243.74(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4145 MCB, 1P, 45A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-789
  • Mfr. Part No. 5SJ4145-8HG41
Each
PHP9,069.67(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7756
  • Mfr. Part No. C16F3MA100
Each
PHP54,553.65(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-064
  • Mfr. Part No. 3VA6110-8HL41-0AA0
Each
PHP118,030.55(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7744
  • Mfr. Part No. C16B44V100
Each
PHP186,610.96(exc. VAT)
Temporarily out of stock
Mersen 315A Bolted Tag Fuse, B3, 240 V dc, 415V ac, 111mm
  • RS Stock No. 178-1070
  • Mfr. Part No. A226320 / BTKF42V315
Each
PHP3,408.68(exc. VAT)
In Stock
Eaton PFIM RCD, 16A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 922-8648
  • Mfr. Part No. 235423 PFIM-16/2/003-A-MW
Each
PHP11,936.16(exc. VAT)
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