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

33476 Products showing for Fuses & Circuit Breakers

25 of 999+
Temporarily out of stock
Mersen 10A British Standard Fuse, 10 x 28mm, 250V ac, 34.6 → 39.4mm
  • RS Stock No. 238-3795
  • Mfr. Part No. L082488
Each
PHP1,797.59(exc. VAT)
In Stock
Electro PJP Earth Rod W. 12mm x 420mm H. 420mm
  • RS Stock No. 263-9091
  • Mfr. Part No. 2223Drill
Each
PHP3,299.25(exc. VAT)
In Stock
Eaton 2A British Standard Fuse, F1, 550V ac
  • RS Stock No. 413-462
  • Mfr. Part No. NSD2
Each (In a Pack of 5)
PHP386.974(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 50A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9751
  • Mfr. Part No. LV510474
Each
PHP36,201.15(exc. VAT)
In Stock
Schneider Electric Acti9 A9K MCB, 1P, 10A Curve B, 440V AC, 10000 A Breaking Capacity
  • RS Stock No. 140-009
  • Mfr. Part No. A9K11110
Each
PHP335.63(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 600A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9795
  • Mfr. Part No. LV563306
Each
PHP109,676.69(exc. VAT)
In Stock
Eaton Eaton Moeller FAZ-DC MCB Mini Circuit Breaker, 2P, 16A Curve B, 500V DC, 10 kA Breaking Capacity
  • RS Stock No. 125-835
  • Mfr. Part No. 176081 FAZ-B16/2-DC
Each
PHP10,694.64(exc. VAT)
In Stock
RS PRO Earthing Strap
  • RS Stock No. 746-7384
Each
PHP201.69(exc. VAT)
In Stock
Schneider Electric Acti9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 211-965
  • Mfr. Part No. A9XPH309
Each
PHP1,246.88(exc. VAT)
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 500A, Fixed Mount
  • RS Stock No. 232-0098
  • Mfr. Part No. 1SDA054456R1 T5N630 FF TMA 500A
Each
PHP143,921.58(exc. VAT)
In Stock
Siemens 10A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1051
  • Mfr. Part No. 5SE2310
1 Pack of 10
PHP887.40(exc. VAT)
In Stock
ABB F200 RCCB, 40A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 231-9901
  • Mfr. Part No. 2CSF204101R1400 F204 A-40/0,03
Each
PHP14,979.63(exc. VAT)
Temporarily out of stock
Better World
ABB, Protecta MCCB 3P 250A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9188
  • Mfr. Part No. 1SDA068059R1 XT3N 250 TMD 250-2500 3p F F
Each
PHP34,814.38(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 250A, Fixed Mount
  • RS Stock No. 250-4227
  • Mfr. Part No. 1SDA054520R1
Each
PHP277,234.20(exc. VAT)
Temporarily out of stock
Schneider Electric, EasyPact Circuit breaker 3P 630A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 124-546
  • Mfr. Part No. EZC630N3500N
Each
PHP63,223.05(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 16A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3344
  • Mfr. Part No. A9F54216
Each
PHP6,984.65(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 50A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9715
  • Mfr. Part No. LV510304
Each
PHP20,725.20(exc. VAT)
In Stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 100A, Fixed Mount
  • RS Stock No. 232-0265
  • Mfr. Part No. 1SDA068055R1 XT3N 250 TMD 100A FF
Each
PHP34,143.00(exc. VAT)
Temporarily out of stock
Siemens SENTRON Busbar Adapter, 60mm Pitch
  • RS Stock No. 211-3844
  • Mfr. Part No. 8US1211-4TR00
Each
PHP9,032.27(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 212-0269
  • Mfr. Part No. LV433257
Each
PHP72,034.89(exc. VAT)
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