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

23 of 999+
Better World
Schneider Electric, Compact MCCB 3P 25A, Breaking Capacity 70 kA, Clip-On
  • RS Stock No. 178-7799
  • Mfr. Part No. LV426551
Each
PHP33,891.24(exc. VAT)
Schneider Electric, PowerPact MCCB 3P 200A, Breaking Capacity 14 kA, DIN Rail Mount
  • RS Stock No. 432-912
  • Mfr. Part No. NJDF36200TW
Each
PHP223,887.82(exc. VAT)
Eaton PKZ0 Circuit Breaker for use with PKZM0, PKZM4
  • RS Stock No. 272-7215
  • Mfr. Part No. 106137 PKZ0-XRH-MCC
Each
PHP6,023.17(exc. VAT)
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)
Phoenix Contact 1 Phase Surge Arrester, DIN Rail Mount
  • RS Stock No. 129-560
  • Mfr. Part No. 2800103
Each
PHP10,577.05(exc. VAT)
RS PRO 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-067
1 Pack of 10
PHP12,406.97(exc. VAT)
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)
Phoenix Contact 3 Phase Surge Protector, 50kA, 250V ac, DIN Rail Mount
  • RS Stock No. 712-5276
  • Mfr. Part No. 2800188
Each
PHP33,295.17(exc. VAT)
Siemens SENTRON 3 Phase Busbar
  • RS Stock No. 187-5202
  • Mfr. Part No. 5ST3740-1
Each
PHP6,993.23(exc. VAT)
ABB Tmax XT Handle, Lockable for use with Circuit Breaker
  • RS Stock No. 232-0282
  • Mfr. Part No. 1SDA069055R1 RHE XT2-XT4 F/P
Each
PHP11,092.96(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-271
  • Mfr. Part No. C080H45AFM
Each
PHP926,233.37(exc. VAT)
Better World
Schneider Electric, Compact MCCB 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 212-0275
  • Mfr. Part No. LV433574
Each
PHP184,792.03(exc. VAT)
Eaton 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 852-7351
  • Mfr. Part No. ATC-15
Each
PHP93.20(exc. VAT)
Siemens 200A Centred Tag Fuse, NH1, 690V ac
  • RS Stock No. 397-339
  • Mfr. Part No. 3NE1225-0
Each (In a Pack of 3)
PHP17,847.567(exc. VAT)
MECATRACTION
  • RS Stock No. 200-6949
  • Mfr. Part No. C6RG1-25
Each (In a Box of 6)
PHP383.65(exc. VAT)
Eaton Busbar, 600V ac, 60mm Pitch
  • RS Stock No. 178-8005
  • Mfr. Part No. 101452 BBA0-32
Each
PHP4,019.03(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8087
  • Mfr. Part No. C40F3
Each
PHP129,683.17(exc. VAT)
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 232-0093
  • Mfr. Part No. 1SDA054412R1 T5H630 FF PR221-LS 630A
Each
PHP184,766.11(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4159
  • Mfr. Part No. 3VA1110-4EF36-0AA0
Each
PHP23,731.19(exc. VAT)
Schneider Electric Acti9 K60N MCB Mini Circuit Breaker, 2P, 32A Curve B, 400V AC, 6000 A Breaking Capacity
  • RS Stock No. 588-953
  • Mfr. Part No. A9K01232
Each
PHP932.38(exc. VAT)
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