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

33493 Products showing for Fuses & Circuit Breakers

98 of 999+
Siemens 1 Phase Surge Arrester, 25kA, 255V (Volts), Screw Mount Mount
  • RS Stock No. 300-001
  • Mfr. Part No. 5SD7441-1KF00
Each
PHP38,387.69(exc. VAT)
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 131-427
  • Mfr. Part No. 2800055
Each
PHP14,985.40(exc. VAT)
Wickmann Fuse Holder Battery Clamp
  • RS Stock No. 342-0205
  • Mfr. Part No. 255.1000.0001
Each
PHP1,493.14(exc. VAT)
Siemens Sentron Copper Rod for use with Busbar
  • RS Stock No. 228-8264
  • Mfr. Part No. 8WC5126
Each
PHP6,656.02(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Breaking Capacity 90 kA, Fixed Mount
  • RS Stock No. 214-775
  • Mfr. Part No. C12N34V160L
Each
PHP149,758.70(exc. VAT)
Better World
Siemens 5SV3 RCCB, 16A, 2 Pole, 30mA, Type F, 230/400V
  • RS Stock No. 218-875
  • Mfr. Part No. 5TY1350-3MF16
Each
PHP51,289.21(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3804
  • Mfr. Part No. 3VA2340-5JQ32-0AA0
Each
PHP165,621.04(exc. VAT)
Siemens Sentron Copper Rod for use with Busbar
  • RS Stock No. 228-8265
  • Mfr. Part No. 8WC5133
Each
PHP9,264.25(exc. VAT)
Littelfuse 0.5A Resettable Fuse, 13.2V dc
  • RS Stock No. 138-679P
  • Mfr. Part No. NANOSMDC050F/13.2-2
Each (Supplied on a Reel)
PHP22.834(exc. VAT)
Eaton Eaton Moeller NZM Residual Current Release for use with Four Pole NZM1-4, N1-4
  • RS Stock No. 240-648
  • Mfr. Part No. 104608 NZM1-4-XFIR
Each
PHP103,588.30(exc. VAT)
Siemens 230V ac Circuit Trip
  • RS Stock No. 223-7666
  • Mfr. Part No. 5TT4468-0
Each
PHP10,426.65(exc. VAT)
Better World
Schneider Electric Acti 9 2 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2720
  • Mfr. Part No. A9XPH212
Each
PHP3,648.02(exc. VAT)
Hager NGN MCB, 4P, 10A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4774
  • Mfr. Part No. NGN410
Each
PHP18,252.99(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-500
  • Mfr. Part No. 3VA5110-6ED31-1AA0
Each
PHP42,153.84(exc. VAT)
RS PRO 5A Tan Blade Car Fuse, 32V dc
  • RS Stock No. 177-8010
1 Bag of 1000
PHP11,573.36(exc. VAT)
Wickmann Resettable Fuse, 125V ac/dc
  • RS Stock No. 174-0322
  • Mfr. Part No. 0251004.MRT1L
1 Reel of 1000
PHP34,116.67(exc. VAT)
ABB System Pro M Compact SU200 MR Circuit Breaker, 3P, 200mA Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-677
  • Mfr. Part No. 2CDS273347R0087
Each
PHP40,328.17(exc. VAT)
Siemens SENTRON 5SY4 MCB, 2P, 3A, Type A, 230V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-503
  • Mfr. Part No. 5SY4503-5
Each
PHP6,442.21(exc. VAT)
ABB, Parts MCCB 4P 0A
  • RS Stock No. 236-6843
  • Mfr. Part No. 1SDA068642R1
Each
PHP2,446.92(exc. VAT)
Eaton Surge Arrester, 25kA, On Base Element Mount
  • RS Stock No. 250-9825
  • Mfr. Part No. 195237 SPRT12-350
Each
PHP28,591.33(exc. VAT)
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