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

33502 Products showing for Fuses & Circuit Breakers

200 of 999+
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - AP12 2 Pole Panel Mount, 1A Current Rating
  • RS Stock No. 275-0165
  • Mfr. Part No. AP12-1-42-102
1 Box of 5
PHP240,674.94(exc. VAT)
In Stock
Better World
Schneider Electric Vigi iDT40 RCD, 25A, 1+N Pole, 30mA, 230V ac
  • RS Stock No. 191-6145
  • Mfr. Part No. A9Y62625
Each
PHP23,100.76(exc. VAT)
In Stock
Hinode Electric Co Ltd 315A Bolted Tag Fuse, 82mm
  • RS Stock No. 103-4255
  • Mfr. Part No. 660GH-315
Each
PHP4,299.32(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 12A Current Rating
  • RS Stock No. 135-914
  • Mfr. Part No. 0915072
1 Pack of 3
PHP30,804.81(exc. VAT)
Temporarily out of stock
Siemens 224A NH Fuse, NH3, 440 - 500V ac/dc
  • RS Stock No. 269-8308
  • Mfr. Part No. 3NA3342
Each (In a Pack of 3)
PHP3,091.57(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 200A, Fixed Mount
  • RS Stock No. 260-8049
  • Mfr. Part No. C25W3TM200
Each
PHP203,237.55(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 20A, Breaking Capacity 65 kA, Screw Mount
  • RS Stock No. 207-190
  • Mfr. Part No. BGL46020LU
Each
PHP64,488.85(exc. VAT)
In Stock
Eaton 35A DIII Bottle Fuse, E33 Thread Size, gG, 500V ac
  • RS Stock No. 182-1537
  • Mfr. Part No. 35D33
Each (In a Box of 25)
PHP248.087(exc. VAT)
Temporarily out of stock
Mersen 16A Bolted Tag Fuse, A2C, 250 V dc, 550V ac, 73mm
  • RS Stock No. 178-1017
  • Mfr. Part No. X1019242 / BTIA55V16
Each (In a Pack of 10)
PHP436.991(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 2P, 20A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-405
  • Mfr. Part No. 2CCS862017R0487
Each
PHP17,142.33(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX160/250 Circuit Breakers
  • RS Stock No. 260-7711
  • Mfr. Part No. C1632G160
Each
PHP37,850.85(exc. VAT)
Temporarily out of stock
Siemens ALPHA Busbar
  • RS Stock No. 629-052
  • Mfr. Part No. 8GK9735-0KK40
Each
PHP7,080.56(exc. VAT)
Temporarily out of stock
Legrand Busbar
  • RS Stock No. 255-2189
  • Mfr. Part No. 037434
Each (In a Pack of 10)
PHP5,688.867(exc. VAT)
Temporarily out of stock
Siemens ALPHA Busbar
  • RS Stock No. 629-037
  • Mfr. Part No. 8GK9736-0KK20
Each
PHP7,080.56(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4103 MCB, 1P, 3A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-880
  • Mfr. Part No. 5SJ4103-8HG42
Each
PHP5,544.90(exc. VAT)
Temporarily out of stock
Eaton PKE Electronic Circuit Breaker 250A , 3 channels
  • RS Stock No. 121-599
  • Mfr. Part No. 155416 NZML3-VE250-AVE
Each
PHP287,745.60(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5214
  • Mfr. Part No. 3VA2340-6JQ32-0AA0
Each
PHP197,204.60(exc. VAT)
In Stock
Eaton 63A British Standard Fuse, LET, 150 V dc, 240V ac, 41.8mm
  • RS Stock No. 156-8838
  • Mfr. Part No. 63LET
Each
PHP622.51(exc. VAT)
Temporarily out of stock
Siemens 6A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-670
  • Mfr. Part No. 3NA6801
Each (In a Pack of 3)
PHP659.98(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 100A Current Rating, 4P Poles, 300mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6247
  • Mfr. Part No. 5SU1674-7AK81
Each
PHP272,671.95(exc. VAT)
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