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

1643 of 999+
Temporarily out of stock
Eaton 3A Resettable Fuse, 6V
  • RS Stock No. 225-8253
  • Mfr. Part No. PTSLR12066V300
1 Reel of 2500
PHP66,307.00(exc. VAT)
In Stock
Bourns 1.85A Resettable Fuse, 24V
  • RS Stock No. 245-9144
  • Mfr. Part No. MF-LSMF185/24X-2
Each (On a Tape of 10)
PHP38.122(exc. VAT)
Temporarily out of stock
Eaton 630A Screw Mount 250 x 200 x 200mm NH Fuse Block, 1.5kV dc
  • RS Stock No. 261-376
  • Mfr. Part No. SD3-D-PV
1 Pack of 3
PHP10,529.06(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-431
  • Mfr. Part No. 3VA6210-8KT41-0AA0
Each
PHP320,368.63(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 237-6289
  • Mfr. Part No. 1SDA067230R1
Each
PHP16,455.12(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse 62mA, 125V ac/dc
  • RS Stock No. 738-3062
  • Mfr. Part No. 0251.062MRT1L
Each (In a Pack of 10)
PHP248.936(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 209-5070
  • Mfr. Part No. 3VA1216-4EF42-0AA0
Each
PHP68,209.08(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7791
  • Mfr. Part No. C16H4TM100
Each
PHP93,102.63(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 20A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9829
  • Mfr. Part No. 3VA1120-5ED46-0AA0
Each
PHP33,312.11(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4668
  • Mfr. Part No. 3VA2140-7KP32-0AA0
Each
PHP129,750.75(exc. VAT)
Temporarily out of stock
Eaton xEffect xEffect - FAZ-T MCB, 2P, 40A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 129-245
  • Mfr. Part No. 142492 FAZT-D40/2
Each
PHP13,481.47(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX400/630 Circuit Breakers
  • RS Stock No. 260-8076
  • Mfr. Part No. C4037E400
Each
PHP265,346.33(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5176
  • Mfr. Part No. 3VA2163-6HN32-0AA0
Each
PHP61,620.45(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7579
  • Mfr. Part No. C11E4TM080B
Each
PHP36,369.68(exc. VAT)
Temporarily out of stock
Siemens 224A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6930
  • Mfr. Part No. 3NA7242-6
Each (In a Pack of 3)
PHP4,882.253(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4547
  • Mfr. Part No. 3VA2125-7HK32-0AA0
Each
PHP54,874.47(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 866-8610
  • Mfr. Part No. 0034.6918
Each (In a Pack of 100)
PHP35.672(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 2A, 32 V ac, 63V dc
  • RS Stock No. 665-7356P
  • Mfr. Part No. 3413.0119.22.
Each (Supplied on a Reel)
PHP33.996(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4656
  • Mfr. Part No. 3VA2140-7HN32-0AA0
Each
PHP60,826.69(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4654
  • Mfr. Part No. 3VA2140-7HM42-0AA0
Each
PHP94,607.11(exc. VAT)
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