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
Fuses - PCB
Fuses - PCB

33476 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Siemens ALPHA Busbar
  • RS Stock No. 226-0832
  • Mfr. Part No. 8GK9733-0KK20
Each
PHP2,071.93(exc. VAT)
In Stock
RS PRO 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 563-766
Each (In a Pack of 10)
PHP21.385(exc. VAT)
Temporarily out of stock
WJ Furse Earth Rod
  • RS Stock No. 153-2966
  • Mfr. Part No. 7TCA083120R0011 RB005
Each (In a Pack of 10)
PHP1,909.652(exc. VAT)
In Stock
Eaton 440mA F Melamine Cartridge Fuse, 10 x 35mm
  • RS Stock No. 459-7918
  • Mfr. Part No. DMM-B-44-100-R
Each (In a Pack of 5)
PHP3,973.952(exc. VAT)
In Stock
Mersen 16A DI Diazed Fuse, E16 Thread Size, gG, 500V
  • RS Stock No. 377-0392
  • Mfr. Part No. J214575
Each (In a Pack of 5)
PHP280.28(exc. VAT)
In Stock
Eaton 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8368
  • Mfr. Part No. C10G1
Each (In a Pack of 10)
PHP62.343(exc. VAT)
In Stock
RS PRO Single Phase Industrial Surge Protector, 50kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-801
Each
PHP3,885.13(exc. VAT)
In Stock
Eaton 125A British Standard Fuse, A4, 660V ac, 93.7mm
  • RS Stock No. 415-250
  • Mfr. Part No. TCP100M125
Each
PHP1,980.51(exc. VAT)
In Stock
Better World
Siemens RCBO, 8A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 151-1213
  • Mfr. Part No. 5SU1356-7KK08
Each
PHP9,490.00(exc. VAT)
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 10mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6976
  • Mfr. Part No. 2CSR255180R0165
Each
PHP18,429.95(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric iDPN Residual Current Circuit Breaker, 32A, 1+N Pole, 300mA, Type C, 400V
  • RS Stock No. 790-7315
  • Mfr. Part No. A9D42632
Each
PHP15,867.32(exc. VAT)
In Stock
Better World
Schneider Electric Earthing Strap Tinned Copper 155 x 17mm Diameter
  • RS Stock No. 222-3853
  • Mfr. Part No. NSYEB1516D8
Each (In a Pack of 10)
PHP495.954(exc. VAT)
Temporarily out of stock
RS PRO Three Phase Industrial Surge Protector, 50kA, 2kV, DIN Rail Mount
  • RS Stock No. 101-805
Each
PHP6,134.19(exc. VAT)
In Stock
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 690V ac
  • RS Stock No. 189-5335
  • Mfr. Part No. H1062699 / CMC102
Each
PHP817.24(exc. VAT)
In Stock
RS PRO MCB, 3P, 63A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0210
Each
PHP1,255.28(exc. VAT)
In Stock
ABB RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6972
  • Mfr. Part No. 2CSR275080R1404
Each
PHP13,359.13(exc. VAT)
In Stock
Europa RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, EUBLMC Range
  • RS Stock No. 210-4734
  • Mfr. Part No. EUBLMC40B30A
Each
PHP4,422.86(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 219-6068P
  • Mfr. Part No. 0154.250DR
Each (Supplied on a Reel)
PHP119.56(exc. VAT)
Temporarily out of stock
Schneider Electric 3 Phase Surge Protector, 40kA
  • RS Stock No. 815-3278
  • Mfr. Part No. SDSA3650
Each
PHP15,948.78(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 151-1218
  • Mfr. Part No. 5SU1356-7KK40
Each
PHP7,462.07(exc. VAT)
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