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

230 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 2P 80A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 147-576
  • Mfr. Part No. 3VA5180-6ED21-0AA0
Each
PHP27,977.77(exc. VAT)
Temporarily out of stock
Eaton RCBO, 6A Current Rating, 3+N Poles, 300mA Trip Sensitivity, Type C, xPole Range
  • RS Stock No. 229-301
  • Mfr. Part No. 120665 mRB6-6/3N/C/03-A
Each
PHP32,550.04(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 156-742
  • Mfr. Part No. 3VA2340-5KQ32-0AA0
Each
PHP249,370.81(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 2A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 244-030
  • Mfr. Part No. 102180 FAZ-D2/2-NA
Each
PHP12,316.23(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 236-6819
  • Mfr. Part No. 1SDA068565R1 XT4L 250 Ekip LSI 250A FF
Each
PHP146,965.98(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact B Circuit breaker 3P 25A, Breaking Capacity 18 KA, Clip-On
  • RS Stock No. 119-645
  • Mfr. Part No. BDL36025LU
Each
PHP49,781.85(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - R21 2 Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0458
  • Mfr. Part No. R21-2-10.0A-B06CV-V
1 Box of 5
PHP15,470.33(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 260-7556
  • Mfr. Part No. C11E3TM032L
Each
PHP26,372.13(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 45A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-409
  • Mfr. Part No. 3VA5145-4ED21-1AA0
Each
PHP32,537.83(exc. VAT)
In Stock
Legrand MCB, 16A, 4 Pole, 400V
  • RS Stock No. 255-2320
  • Mfr. Part No. 408126
Each
PHP16,922.10(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 1P 125A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9724
  • Mfr. Part No. 3VA1112-5ED12-0AA0
Each
PHP24,384.69(exc. VAT)
Currently unavailable
Schurter Circuit Breaker Switch - TA45 2 Pole 120V ac Voltage Rating Panel Mount, 5.5A Current Rating
  • RS Stock No. 868-9064
  • Mfr. Part No. 4430.0479
Each
PHP2,181.79(exc. VAT)
In Stock
Eaton 20A British Standard Fuse, CT, 690 V, 700 V, 64.3mm
  • RS Stock No. 156-8917
  • Mfr. Part No. 20CT
Each (In a Pack of 5)
PHP603.596(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4163 Circuit Breaker, 1P, 63A Curve D, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 153-526
  • Mfr. Part No. 5SY4163-8
Each
PHP6,486.79(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 541-3259
  • Mfr. Part No. 0251.500NRT1L
Each (In a Pack of 10)
PHP48.708(exc. VAT)
In Stock
Schneider Electric Acti9 A9D MCB, 4P, 16A Curve C, 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 288-7076
  • Mfr. Part No. A9D77416
Each
PHP46,306.78(exc. VAT)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.6kV, DIN Rail Mount
  • RS Stock No. 120-853
  • Mfr. Part No. 167622 SPCT2-335-3+NPE
Each
PHP32,290.54(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 284-5366
  • Mfr. Part No. 0034.6618
Each (In a Pack of 10)
PHP30.605(exc. VAT)
Unavailable
Schneider Electric 690V ac Circuit Trip for use with Compact NSX 250 Circuit Breakers
  • RS Stock No. 219-9370
  • Mfr. Part No. LV431431
Each
PHP61,326.99(exc. VAT)
In Stock
Schneider Electric, ComPacT Circuit breaker 3P 100A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-284
  • Mfr. Part No. C11B34V100B
Each
PHP97,110.80(exc. VAT)
1
230
1676
Results per page

Related links