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

126 of 999+
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 50A, Fixed Mount
  • RS Stock No. 254-6314
  • Mfr. Part No. C11F3TM050L
Each
PHP31,432.78(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA
  • RS Stock No. 209-6906
  • Mfr. Part No. 3VA2110-5HM32-0AA0
Each
PHP60,061.17(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 3P, 20A Curve B, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-884
  • Mfr. Part No. A9K11320
Each
PHP1,697.18(exc. VAT)
In Stock
Schneider Electric RCBO, 20A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type C, Resi9 Range
  • RS Stock No. 130-504
  • Mfr. Part No. R9PDCS20
Each
PHP23,492.49(exc. VAT)
Temporarily out of stock
ABB, Tmax MCCB 3P 1.25kA, Fixed Mount
  • RS Stock No. 237-6001
  • Mfr. Part No. 1SDA062038R1 T7D-M 1250A FF
Each
PHP228,519.61(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4544
  • Mfr. Part No. 3VA2125-6KQ42-0AA0
Each
PHP144,869.14(exc. VAT)
In Stock
Eaton 208 → 250V ac/dc Shunt Trip Shunt trip for use with N(S)2(-4) Series, N(S)3(-4) Series, NZM2(-4) Series,
  • RS Stock No. 537-5668
  • Mfr. Part No. 259763 NZM2/3-XA208-250AC/DC
Each
PHP9,928.39(exc. VAT)
Temporarily out of stock
ABB RCBO, 20A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5210
  • Mfr. Part No. 2CSR274101R1204
Each
PHP30,183.08(exc. VAT)
In Stock
MECATRACTION Brass Earth Clamp Max. Conductor Size 2 x 120mm 43mm
  • RS Stock No. 299-101
  • Mfr. Part No. SE2-120
Each (In a Box of 10)
PHP1,268.279(exc. VAT)
New product - Preorder today
Schneider Electric Resi9 MCB, 3P, 20A Curve B, 400V AC, 6000 A Breaking Capacity
  • RS Stock No. 654-653
  • Mfr. Part No. R9F23320
Each
PHP6,038.66(exc. VAT)
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 175-1462
  • Mfr. Part No. GV4LE115B
Each
PHP20,781.60(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 4kA, DIN Rail Mount
  • RS Stock No. 204-7765
  • Mfr. Part No. 2907920
Each (In a Pack of 10)
PHP7,730.24(exc. VAT)
In Stock
Eaton, xEnergy MCCB 3P 250A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 537-5589
  • Mfr. Part No. 259124 NZMN2-VE250
Each
PHP58,962.32(exc. VAT)
Temporarily out of stock
Siemens SENTRON 3VA9 Kit for use with 3VA1 250
  • RS Stock No. 218-1819
  • Mfr. Part No. 3VA9214-0KP10
Each
PHP12,016.22(exc. VAT)
Temporarily out of stock
Eaton 40A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 182-1815
  • Mfr. Part No. 170M3808D
Each
PHP5,511.60(exc. VAT)
Temporarily out of stock
Eaton Bussmann Series PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 169-9504
  • Mfr. Part No. SR-5-500MA-BK
Each (In a Bag of 200)
PHP61.776(exc. VAT)
In Stock
Eaton 2A Bolted Tag Fuse, A2, 460 V dc, 660V ac, 73mm
  • RS Stock No. 181-8731
  • Mfr. Part No. TIA2
Each
PHP1,253.78(exc. VAT)
In Stock
Littelfuse 8A Resettable Fuse, 16V
  • RS Stock No. 517-6966
  • Mfr. Part No. RGEF800
Each (In a Pack of 5)
PHP42.372(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 125mA, 250V ac
  • RS Stock No. 284-5243
  • Mfr. Part No. 0034.6606
Each (In a Pack of 10)
PHP38.481(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3766
  • Mfr. Part No. 3VA2040-6KP36-0AA0
Each
PHP91,989.77(exc. VAT)
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