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

245 of 999+
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 232-0086
  • Mfr. Part No. 1SDA054333R1 T5S400 FF PR221-LS 400A
Each
PHP112,917.48(exc. VAT)
In Stock
Mersen 160A NH Fuse, NH1, 690V ac
  • RS Stock No. 448-3471
  • Mfr. Part No. C320369
Each
PHP8,433.67(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 4P 50A, Breaking Capacity 50 KA, Fixed Mount
  • RS Stock No. 119-467
  • Mfr. Part No. C11N44V050B
Each
PHP110,375.48(exc. VAT)
In Stock
Schneider Electric Straight Busbar Trunking, 3m, 25A, Canalis Series
  • RS Stock No. 275-8808
  • Mfr. Part No. KBA25ED4303W
Each
PHP8,567.59(exc. VAT)
Temporarily out of stock
Hager ARC MCB, 2P, 10A, 500V AC, 3 kA Breaking Capacity
  • RS Stock No. 602-087
  • Mfr. Part No. ARC710F
Each
PHP17,116.45(exc. VAT)
Temporarily out of stock
Eaton 35A DIII Bottle Fuse, 500V
  • RS Stock No. 228-741
  • Mfr. Part No. 35D33 FUSE-D3 35A T GL/GG 500VAC E33
1 Pack of 5
PHP771.10(exc. VAT)
In Stock
RS PRO 5A Resettable Fuse, 30V dc
  • RS Stock No. 279-6756
Each (In a Pack of 10)
PHP38.683(exc. VAT)
Temporarily out of stock
Eaton 6A Tag Fuse, 22 x 82mm, 0.46/0.69kV
  • RS Stock No. 228-830
  • Mfr. Part No. 6H07-660
1 Pack of 20
PHP58,301.16(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-805
  • Mfr. Part No. 3VA6460-5HN41-0AA0
Each
PHP336,497.03(exc. VAT)
Unavailable
Littelfuse 0.15A Resettable Fuse, 250V dc
  • RS Stock No. 869-7425P
  • Mfr. Part No. TRF600-150
Each (Supplied in a Bag)
PHP35.678(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IUGN6 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0287
  • Mfr. Part No. IUGN6-1-63F-20.0
Each
PHP6,550.24(exc. VAT)
Temporarily out of stock
Hager RCBO, 20A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A
  • RS Stock No. 602-210
  • Mfr. Part No. ADX470C
Each
PHP43,050.14(exc. VAT)
In Stock
RS PRO 100A Bolted Tag Fuse, 120 V dc, 240V ac, 41.8mm
  • RS Stock No. 221-3636
Each
PHP845.60(exc. VAT)
Temporarily out of stock
Siemens 230V ac Remote Switch Circuit Trip
  • RS Stock No. 223-7643
  • Mfr. Part No. 5TT4452-0
Each
PHP7,519.23(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-7557
  • Mfr. Part No. C11E3TM040B
Each
PHP23,207.54(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-735
  • Mfr. Part No. A9DF3616
Each
PHP24,158.52(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 655-153
  • Mfr. Part No. C11N44V100L
Each
PHP124,188.77(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 16A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9450
  • Mfr. Part No. 3VA1196-3GE46-0AA0
Each
PHP29,228.26(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 211-3745
  • Mfr. Part No. 3VA1196-4EE32-0AA0
Each
PHP25,399.16(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 32A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-775
  • Mfr. Part No. 2CDS273061R0324
Each
PHP33,418.93(exc. VAT)
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