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

73 of 999+
Schneider Electric 1 Phase Distribution Board, 2 Way, 63 A
  • RS Stock No. 301-8600
  • Mfr. Part No. 13392
Each
PHP896.02(exc. VAT)
ABB F200 RCD, 25A, 4 Pole, 30mA, Type AC, 230/400V ac
  • RS Stock No. 183-3636
  • Mfr. Part No. 2CSF204023R1250
Each
PHP7,244.59(exc. VAT)
Siemens SIRIUS 3 Phase Busbar, 690V, 45mm Pitch
  • RS Stock No. 246-5162
  • Mfr. Part No. 3RV1915-1DB
Each
PHP2,330.55(exc. VAT)
Better World
Schneider Electric, Compact Nsx, 630A, POWERTAG, 500VA
  • RS Stock No. 221-1276
  • Mfr. Part No. LV432652
Each
PHP180,522.70(exc. VAT)
Eaton Fuse Holder Trip Indicator Kit
  • RS Stock No. 182-1492
  • Mfr. Part No. MC-700
Each
PHP2,504.88(exc. VAT)
Better World
Schneider Electric RCBO, 32A Current Rating, 4P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 247-1931
  • Mfr. Part No. A9D87432
Each
PHP39,059.36(exc. VAT)
Schurter 1.6A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 789-7839
  • Mfr. Part No. 0034.1518
Each (In a Bag of 10)
PHP15.856(exc. VAT)
Better World
Schneider Electric, ComPacT NSX MCCB 4P 160A, Fixed Mount
  • RS Stock No. 254-6341
  • Mfr. Part No. C16B42D160
Each
PHP96,207.16(exc. VAT)
Mersen 35A Tag Fuse, 78 x 52 x 21mm, 500V ac
  • RS Stock No. 244-8523
  • Mfr. Part No. C211947C
1 Box of 3
PHP1,590.67(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8121
  • Mfr. Part No. C40N3
Each
PHP84,823.21(exc. VAT)
Schneider Electric, ComPacT NSX MCCB 4P 160A, Fixed Mount
  • RS Stock No. 254-6346
  • Mfr. Part No. C16F4
Each
PHP41,872.68(exc. VAT)
Siemens SENTRON 3VA9 Rotary Operator for use with 3VA1 400/630, 3VA2 400/630
  • RS Stock No. 218-1858
  • Mfr. Part No. 3VA9467-0FK21
Each
PHP19,072.63(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 110 kA
  • RS Stock No. 209-6944
  • Mfr. Part No. 3VA2440-7MN32-0AA0
Each
PHP202,707.38(exc. VAT)
Schneider Electric Acti9 A9F MCB, 4P, 10A, 440V AC, 250V DC, 10000 A Breaking Capacity
  • RS Stock No. 276-8727
  • Mfr. Part No. A9F87410
Each
PHP21,949.80(exc. VAT)
Eaton Non Resettable Fuse 15A, 125 V dc, 250V ac
  • RS Stock No. 849-5756
  • Mfr. Part No. NON-15
Each
PHP776.71(exc. VAT)
ABB Auxiliary Contact for use with Tmax XT
  • RS Stock No. 237-6204
  • Mfr. Part No. 1SDA066997R1
Each
PHP2,865.39(exc. VAT)
Better World
ABB System Pro M Compact S200 MCB, 1P, 63A Curve C, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7687
  • Mfr. Part No. 2CDS251001R0634 S201-C63
Each
PHP1,505.78(exc. VAT)
Siemens 8US1 Busbar for use with Flat Bars
  • RS Stock No. 266-9619
  • Mfr. Part No. 8US1923-4AA00
Each (In a Pack of 10)
PHP2,324.191(exc. VAT)
ABB Circuit Breaker
  • RS Stock No. 192-0845
  • Mfr. Part No. 1SDA067092R1
Each
PHP51,383.44(exc. VAT)
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 339-365
  • Mfr. Part No. SEA9BPN2508S8
Each
PHP718,516.24(exc. VAT)
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