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

33502 Products showing for Fuses & Circuit Breakers

253 of 999+
Temporarily out of stock
Schneider Electric Canalis 1, 3 Phase Busbar, 230-400V
  • RS Stock No. 212-277
  • Mfr. Part No. KBB40ED42203TW
1 Pack of 6
PHP139,075.99(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, 2.5kA, 150V ac/dc, DIN Rail Mount
  • RS Stock No. 497-863
  • Mfr. Part No. 1109673
Each
PHP1,690.25(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 65V dc Voltage Rating DIN Rail, 16A Current Rating
  • RS Stock No. 135-510
  • Mfr. Part No. 0914905
1 Pack of 3
PHP31,106.56(exc. VAT)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - M39019 2 Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0430
  • Mfr. Part No. M39019/03-333S
Each
PHP125,219.17(exc. VAT)
Temporarily out of stock
RCBO, 13A Current Rating, 1+N Poles, 30mA Trip Sensitivity, Type D, xEffect Range
  • RS Stock No. 252-752
  • Mfr. Part No. 193485 FRBmM-D13/1N/003-F
Each
PHP18,767.59(exc. VAT)
Temporarily out of stock
Eaton PC Board Non Resettable Fuse, Radial 400mA, 250V ac
  • RS Stock No. 169-9500
  • Mfr. Part No. SR-5-400MA-BK
Each (In a Bag of 200)
PHP39.975(exc. VAT)
Temporarily out of stock
Hager BD Series RCCB, 40A, 3 Pole, 30mA, Type AC, 400V
  • RS Stock No. 597-895
  • Mfr. Part No. BD346
Each
PHP25,500.49(exc. VAT)
In Stock
Better World
Schneider Electric GFP RCCB, 63A, 4 Pole, 86mA, Type A, 415V ac
  • RS Stock No. 214-2098
  • Mfr. Part No. M9R12463
Each
PHP38,621.70(exc. VAT)
In Stock
Better World
Schneider Electric Nsx400...630, Nsx400...630 Dc, Powerpact Multistandard Padlock Device for use with Compact Nsx
  • RS Stock No. 221-1273
  • Mfr. Part No. LV432631
Each
PHP2,976.28(exc. VAT)
In Stock
ABB 400V ac Isolator Circuit Trip for use with Commanding Loads
  • RS Stock No. 186-3462
  • Mfr. Part No. 2CDE284001R1063 E204 63G
Each
PHP5,830.51(exc. VAT)
Temporarily out of stock
Eaton MCB, 1P, 8A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 247-103
  • Mfr. Part No. 101262 PLI-D8/1
Each
PHP2,602.54(exc. VAT)
Temporarily out of stock
Eaton 6A Bolted Tag Fuse, 1.2 kV ac, 660V dc, 124mm
  • RS Stock No. 181-8434
  • Mfr. Part No. TAC6
Each (In a Box of 10)
PHP2,930.48(exc. VAT)
In Stock
ABB RCBO, 10A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6894
  • Mfr. Part No. 2CSR255180R2105 DS201 B10 A100
Each
PHP18,359.61(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 32A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 200-344
  • Mfr. Part No. 2CDS383103R0324
Each
PHP41,113.37(exc. VAT)
In Stock
Better World
Siemens SENTRON 3VA9 Wire Connector for use with 3VA1 100/160
  • RS Stock No. 218-1782
  • Mfr. Part No. 3VA9113-0JB11
Each
PHP2,892.33(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1.6kA, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 654-858
  • Mfr. Part No. C160N350FM
Each
PHP500,179.94(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 230-364
  • Mfr. Part No. 112760 NZMN1-A80-SVE
Each
PHP39,661.20(exc. VAT)
Temporarily out of stock
Eaton MCB, 4P, 13A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 240-448
  • Mfr. Part No. 101369 PLI-D13/4
Each
PHP12,682.79(exc. VAT)
In Stock
Littelfuse 3A Purple Blade Car Fuse, 32V dc
  • RS Stock No. 787-4148
  • Mfr. Part No. 0297003.WXNV
Each (In a Pack of 10)
PHP15.939(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 220A, Fixed Mount
  • RS Stock No. 260-7908
  • Mfr. Part No. C25H32M220
Each
PHP103,316.01(exc. VAT)
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