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

259 of 999+
Temporarily out of stock
Bourns Single, Three Phase Surge Protector, 50kA, 1.8kV, DIN Rail Mount
  • RS Stock No. 287-9621
  • Mfr. Part No. 1250A-1S-480
Each (In a Box of 100)
PHP7,743.68(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Cable Connection Kit for use with Compact Nsx 100 To 630
  • RS Stock No. 221-1172
  • Mfr. Part No. LV429272
Each
PHP7,990.02(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-452
  • Mfr. Part No. 3VA5215-6GF41-0AA0
Each
PHP146,769.25(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 20A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-477
  • Mfr. Part No. C10N1TM020
Each
PHP17,627.72(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 209-4848
  • Mfr. Part No. 3VA1080-3ED32-0AA0
Each
PHP20,769.34(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 10A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 248-708
  • Mfr. Part No. 102147 FAZ-D10/1-RT
Each
PHP4,735.88(exc. VAT)
In Stock
Eaton 10A DII Bottle Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 181-8580
  • Mfr. Part No. 10D27Q
1 Box of 25
PHP3,221.78(exc. VAT)
Temporarily out of stock
Siemens for use with RT Relay
  • RS Stock No. 213-2455
  • Mfr. Part No. LZS:PT17021
Each (In a Pack of 10)
PHP35.171(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9422
  • Mfr. Part No. 3VA1180-4GE42-0AA0
Each
PHP31,027.07(exc. VAT)
Temporarily out of stock
Schneider Electric, 290 → 800mm, Canalis Series
  • RS Stock No. 357-531
  • Mfr. Part No. KSA1000DLE4AM
Each
PHP507,750.56(exc. VAT)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Arrester, DIN Rail Mount
  • RS Stock No. 130-082
  • Mfr. Part No. 2801042
Each
PHP10,850.84(exc. VAT)
Temporarily out of stock
Schneider Electric CompacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 654-978
  • Mfr. Part No. C100N4WM
Each
PHP264,031.73(exc. VAT)
Temporarily out of stock
Schneider Electric Flexible Busbar Trunking, 3mm, 1000A, Canalis Series
  • RS Stock No. 244-986
  • Mfr. Part No. KSA1000ET430
Each
PHP327,748.28(exc. VAT)
Last RS stock
ABB RCCB, 20A, 4 Pole, 30mA, Type C, 415V ac
  • RS Stock No. 246-2413
  • Mfr. Part No. 2CCG001745R0001
Each
PHP33,686.00(exc. VAT)
Temporarily out of stock
ABB S800C MCB, 3P, 13A Curve D, 240V AC, 25 kA Breaking Capacity
  • RS Stock No. 141-223
  • Mfr. Part No. 2CCS883001R0131
Each
PHP14,388.64(exc. VAT)
Temporarily out of stock
Siemens Support for use with SIVACON S4
  • RS Stock No. 621-293
  • Mfr. Part No. 8PQ3000-0BA02
Each
PHP14,014.38(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 110A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-520
  • Mfr. Part No. 3VA5111-6GC41-0AA0
Each
PHP53,630.39(exc. VAT)
In Stock
RS PRO 315A Solid Link for B3 Fuses
  • RS Stock No. 242-1099
Each
PHP2,252.94(exc. VAT)
Temporarily out of stock
Siemens 5SM27 RCCB, 63A, 3 Pole, 500mA, Type A, 400V
  • RS Stock No. 328-400
  • Mfr. Part No. 5SM2735-6
Each
PHP12,756.10(exc. VAT)
Temporarily out of stock
Mersen 100A Bolted Tag Fuse, A4C, 240 V dc, 415V ac, 94mm
  • RS Stock No. 178-1044
  • Mfr. Part No. B226298 / BTCP42V100M160
Each (In a Pack of 10)
PHP2,012.673(exc. VAT)
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