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

33477 Products showing for Fuses & Circuit Breakers

62 of 999+
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 4A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3382
  • Mfr. Part No. A9F73204
Each
PHP10,845.41(exc. VAT)
In Stock
Mersen 8A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0593
  • Mfr. Part No. Z1014575 / FR10GR69V8
Each
PHP561.80(exc. VAT)
In Stock
Hinode Electric Co Ltd 16A Bolted Tag Fuse, 660 V ac, 450V dc, 62.7mm
  • RS Stock No. 103-4240
  • Mfr. Part No. 660GH-016
Each (In a Pack of 5)
PHP1,045.046(exc. VAT)
In Stock
Schneider Electric 100V ac Shunt Trip Circuit Trip for use with IC60, IID, ISW-NA
  • RS Stock No. 734-9021
  • Mfr. Part No. A9A26946
Each
PHP6,277.08(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 4kA IZMX/INX, 3 channels , Fixed
  • RS Stock No. 132-874
  • Mfr. Part No. 183717 IZMX40N3-V40F-1
Each
PHP2,046,624.25(exc. VAT)
In Stock
Eaton PXF-A RCCB, 25A, 1+N Pole, 30mA, Type A, 440V ac
  • RS Stock No. 490-157
  • Mfr. Part No. 236744 PXF-25/2/003-A
Each
PHP3,300.79(exc. VAT)
Limited stock
Eaton MCB, 1+N, 10A Curve C, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 230-1092
  • Mfr. Part No. 264693 PLG6-C10/1N
Each
PHP1,234.07(exc. VAT)
In Stock
Siemens 125A NH Fuse, NH1, 500V ac
  • RS Stock No. 396-077
  • Mfr. Part No. 3NA3132
Each (In a Pack of 3)
PHP885.647(exc. VAT)
In Stock
Schneider Electric C120 Acti9 C120 MCB, 2P, 125A Curve D, 380 → 415V AC, 250V DC, 30 kA Breaking Capacity
  • RS Stock No. 130-385
  • Mfr. Part No. A9N18503
Each
PHP27,537.52(exc. VAT)
In Stock
Better World
Siemens SIRIUS 3RV MCB, 3P, 20A, 20 → 690V AC, 4 Breaking Capacity
  • RS Stock No. 156-511
  • Mfr. Part No. 3RV2421-4BA10-0BA0
Each
PHP9,653.37(exc. VAT)
In Stock
MECATRACTION Lightning Earth Clamp
  • RS Stock No. 200-6944
  • Mfr. Part No. C6RG2-35
Each (In a Box of 6)
PHP421.115(exc. VAT)
Temporarily out of stock
ABB, SACE FORMULA MCCB Molded Case Circuit Breaker 1P 63A, Fixed Mount
  • RS Stock No. 231-9300
  • Mfr. Part No. 1SDA075871R1 KIT FC Cu XT1 14-1/0 AWG 6
Each
PHP11,850.92(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 40A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 239-9966
  • Mfr. Part No. A9DX3640
Each
PHP31,952.71(exc. VAT)
In Stock
RS PRO Residential RCCBs, 40A, 2 Pole, 300mA, Type A, 230V
  • RS Stock No. 284-2370
Each
PHP4,361.87(exc. VAT)
In Stock
Eaton 140A British Standard Fuse, FEE, 500 V dc, 690V ac, 70mm
  • RS Stock No. 156-9033
  • Mfr. Part No. 140FEE
Each
PHP3,610.29(exc. VAT)
Temporarily out of stock
ABB PS2 2 Phase Busbar, 400V
  • RS Stock No. 231-9637
  • Mfr. Part No. 2CDL220001R1648 PS2/48/16 H
1 Box of 1
PHP8,335.71(exc. VAT)
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure, 2 Way
  • RS Stock No. 125-108
  • Mfr. Part No. 178836 KLV-48HWM-F
Each
PHP24,789.59(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 600A, Breaking Capacity 100 kA, DIN Rail Mount
  • RS Stock No. 245-056
  • Mfr. Part No. NLJF36600U53XTW
Each
PHP395,666.13(exc. VAT)
Temporarily out of stock
Eaton BBA Busbar Adapter 3 Phase Busbar, 690V
  • RS Stock No. 230-808
  • Mfr. Part No. 116901 BBA2-80/2TS-S
1 Pack of 4
PHP15,440.93(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 90A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 357-935
  • Mfr. Part No. BDL36090LU
Each
PHP56,256.59(exc. VAT)
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