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

21 of 999+
In Stock
Bourns 3A Resettable Fuse, 30V
  • RS Stock No. 647-8572
  • Mfr. Part No. MF-R300
Each (In a Pack of 10)
PHP26.007(exc. VAT)
In Stock
Littelfuse 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4410
  • Mfr. Part No. 0217002.MXP
Each (In a Pack of 10)
PHP13.828(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Electronic Circuit Breaker 125A 500V ComPacT NSX, 2 channels , Fixed
  • RS Stock No. 339-523
  • Mfr. Part No. C16S2TM125
Each
PHP44,730.13(exc. VAT)
In Stock
Eaton 630A Centred Tag Fuse, NH2, 690V ac
  • RS Stock No. 182-1376
  • Mfr. Part No. 170M5812D
Each (In a Box of 3)
PHP26,050.703(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 200A, Breaking Capacity 65 kA, DIN Rail Mount
  • RS Stock No. 358-358
  • Mfr. Part No. NJGF36200TW
Each
PHP253,973.88(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar Adapter, 690V, 60mm Pitch
  • RS Stock No. 219-9101
  • Mfr. Part No. LA9ZA32434
Each (In a Pack of 4)
PHP4,773.47(exc. VAT)
In Stock
Better World
Schneider Electric iID RCCB, 25A, 2 Pole, 300mA
  • RS Stock No. 734-9337
  • Mfr. Part No. A9R14225
Each
PHP9,827.66(exc. VAT)
In Stock
Better World
ABB, XT4L MCCB 4P 200A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 236-6733
  • Mfr. Part No. 1SDA068390R1 XT4L 250 TMA 200A 3P+N FF
Each
PHP91,164.25(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 80A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9734
  • Mfr. Part No. LV510336
Each
PHP31,750.50(exc. VAT)
Temporarily out of stock
Schneider Electric, EasyPact Circuit breaker 3P 630A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 100-836
  • Mfr. Part No. EZC630N3400N
Each
PHP63,200.97(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 1.6kA, Fixed Mount
  • RS Stock No. 232-0159
  • Mfr. Part No. 1SDA062994R1 T7S 1600A PR231-LS/I FF
Each
PHP290,817.44(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 300A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 230-990
  • Mfr. Part No. 107581 NZMH2-A300
Each
PHP146,328.56(exc. VAT)
Temporarily out of stock
Eaton 3A Bolt Fixing Photovoltaic Fuse, 1000V dc, 49.7mm
  • RS Stock No. 703-8245
  • Mfr. Part No. PV-3A10-T
Each
PHP647.00(exc. VAT)
In Stock
Schneider Electric Acti9 A9P MCB, 1P, 16A, 230V AC, 4500 A Breaking Capacity
  • RS Stock No. 276-8734
  • Mfr. Part No. A9P12616
Each
PHP4,103.41(exc. VAT)
Temporarily out of stock
Penta Fiberglass Earth Clamp Max. Conductor Size Cable CC 70mm² / terre 35mm² 317.5mm
  • RS Stock No. 248-9892
  • Mfr. Part No. PIMT49S
Each
PHP172,598.73(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 320A, Breaking Capacity 55 kA
  • RS Stock No. 209-7033
  • Mfr. Part No. 3VA1463-5EF32-0AA0
Each
PHP174,168.74(exc. VAT)
Temporarily out of stock
Eaton MCB, 1P, 2A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 248-578
  • Mfr. Part No. 101252 PLI-C2/1
Each
PHP2,710.72(exc. VAT)
Currently unavailable
ABB S203L MCB, 3P, 20A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 201-393
  • Mfr. Part No. 2CDS243701R0204
Each
PHP11,303.47(exc. VAT)
In Stock
Schneider Electric Single Phase Surge Arrester, 20kA, 460V (Volts), Clip-On Mount
  • RS Stock No. 130-972
  • Mfr. Part No. A9L20321
Each
PHP69,012.41(exc. VAT)
In Stock
Phoenix Contact Busbar, 6.2mm Pitch
  • RS Stock No. 627-3406
  • Mfr. Part No. 3030271
Each (In a Pack of 5)
PHP272.448(exc. VAT)
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