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

173 of 999+
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 3m, 250A, KS Series
  • RS Stock No. 219-8915
  • Mfr. Part No. KSA250ED43012
Each
PHP84,348.90(exc. VAT)
Temporarily out of stock
Eaton 100A Bolted Tag Fuse, A3, 500V ac, 73mm
  • RS Stock No. 181-8437
  • Mfr. Part No. BAO100
1 Box of 20
PHP25,286.00(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 40A Curve C, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3445
  • Mfr. Part No. A9F54440
Each
PHP11,594.80(exc. VAT)
In Stock
Eaton 4A Bolted Tag Fuse, 240V ac, 35mm
  • RS Stock No. 181-8477
  • Mfr. Part No. STD4
1 Box of 20
PHP4,203.94(exc. VAT)
Temporarily out of stock
SENTRON Shunt Trip Voltage Release for use with 3VA4/5/6 Series
  • RS Stock No. 263-750
  • Mfr. Part No. 3VA9978-0BL31
Each
PHP9,896.97(exc. VAT)
Temporarily out of stock
Siemens Push Button Circuit Trip
  • RS Stock No. 211-3832
  • Mfr. Part No. 5TE4830
Each
PHP4,531.82(exc. VAT)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-200
  • Mfr. Part No. 3VA6610-6JT46-0AA0
Each
PHP945,710.61(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-307
  • Mfr. Part No. 3VA6440-6KT31-0AA0
Each
PHP445,048.98(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-241
  • Mfr. Part No. 3VA6440-7JT31-0AA0
Each
PHP341,628.79(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3785
  • Mfr. Part No. 3VA2140-5KP46-0AA0
Each
PHP106,485.21(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3779
  • Mfr. Part No. 3VA2116-6KP46-0AA0
Each
PHP189,096.87(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA
  • RS Stock No. 209-6942
  • Mfr. Part No. 3VA2325-5HN32-0AA0
Each
PHP107,318.31(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 20A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-4944
  • Mfr. Part No. 3VA1120-5GF46-0AA0
Each
PHP35,887.64(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4655
  • Mfr. Part No. 3VA2140-7HM46-0AA0
Each
PHP98,141.33(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4614
  • Mfr. Part No. 3VA2140-0MN36-0AA0
Each
PHP65,338.26(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5228
  • Mfr. Part No. 3VA2440-6HN32-0AA0
Each
PHP162,506.15(exc. VAT)
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 3P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-6016
  • Mfr. Part No. 3VA1140-5EF42-0AA0
Each
PHP35,012.42(exc. VAT)
Temporarily out of stock
Hager NSN MCB, 2P, 20A Curve D, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 597-953
  • Mfr. Part No. NSN220
Each
PHP15,456.61(exc. VAT)
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV3L 3 Pole 690V ac Voltage Rating DIN Rail Mount, 80A Current Rating
  • RS Stock No. 188-4739
  • Mfr. Part No. GV3L80
Each
PHP19,108.72(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 2P, 20A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-151
  • Mfr. Part No. 2CDS272001R0487
Each
PHP18,656.87(exc. VAT)
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