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

116 of 999+
Temporarily out of stock
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 4P, 32A Curve C, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-929
  • Mfr. Part No. A9K12432
Each
PHP3,304.14(exc. VAT)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 250A, Fixed Mount
  • RS Stock No. 221-1049
  • Mfr. Part No. LV433523
Each
PHP315,300.43(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 3P, 50A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-805
  • Mfr. Part No. SE10C350
Each
PHP9,504.42(exc. VAT)
Temporarily out of stock
Better World
Siemens 5sV3 RCCB, 63A, 2 Pole, 100mA, Type A, 230V ac
  • RS Stock No. 211-9664
  • Mfr. Part No. 5SV3416-8
Each
PHP36,483.76(exc. VAT)
Temporarily out of stock
Schneider Electric Altivar Process Modular Busbar Kit
  • RS Stock No. 119-339
  • Mfr. Part No. VW3A98ABMCAB
Each
PHP51,678.76(exc. VAT)
In Stock
RS PRO 160A British Standard Fuse, A4, 415V ac, 93.7mm
  • RS Stock No. 521-2725
Each
PHP2,842.95(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 125A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-274
  • Mfr. Part No. 3VA5112-6ED21-1AA0
Each
PHP57,530.50(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 500A, Fixed Mount
  • RS Stock No. 260-8207
  • Mfr. Part No. C63F4TM500D
Each
PHP230,037.80(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 45A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 346-792
  • Mfr. Part No. BDF36045
Each
PHP50,625.58(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 200A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-205
  • Mfr. Part No. 3VA5220-6EC61-0AA0
Each
PHP117,894.92(exc. VAT)
Temporarily out of stock
Siemens 25A Centred Tag Fuse, NH1, 500V
  • RS Stock No. 230-2944
  • Mfr. Part No. 3NA6110
Each (In a Pack of 3)
PHP1,826.877(exc. VAT)
Temporarily out of stock
ABB S301 MCB, 1+N, 500mA Curve C, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-740
  • Mfr. Part No. 2CDS381103R0984
Each
PHP15,754.51(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 1A, 63V
  • RS Stock No. 820-7057
  • Mfr. Part No. 0437001.WR
Each (In a Pack of 100)
PHP66.528(exc. VAT)
Temporarily out of stock
ABB RCBO, 10A Current Rating, 1P Poles, Type B
  • RS Stock No. 237-5246
  • Mfr. Part No. 2CSR275151R0105
Each
PHP11,300.14(exc. VAT)
In Stock
Schneider Electric A9W RCD, 25A, 2 Pole, 30mA, Type A, 230-240V ac
  • RS Stock No. 212-178
  • Mfr. Part No. A9W21225
Each
PHP9,309.48(exc. VAT)
In Stock
Mersen 200A NH Fuse, NH00, 690V ac
  • RS Stock No. 448-3443
  • Mfr. Part No. M320171
Each
PHP3,765.80(exc. VAT)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.6kV, DIN Rail Mount
  • RS Stock No. 120-782
  • Mfr. Part No. 167601 SPCT2-335/4
Each
PHP65,782.49(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A , DIN Rail
  • RS Stock No. 127-549
  • Mfr. Part No. 183475 IZMX16N3-P08W-1
Each
PHP536,611.38(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 1P 70A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-074
  • Mfr. Part No. BGL16070
Each
PHP42,036.47(exc. VAT)
Temporarily out of stock
SIBA 25A NH Fuse, NH000, 690V ac
  • RS Stock No. 431-6961
  • Mfr. Part No. 20-477-34/25A
Each
PHP4,697.81(exc. VAT)
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