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

158 of 999+
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 32A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3304
  • Mfr. Part No. A9F54132
Each
PHP1,648.50(exc. VAT)
In Stock
Schneider Electric ComPacT NSX Rotary Handle for use with NSX630
  • RS Stock No. 272-7477
  • Mfr. Part No. LV432598T
Each
PHP17,199.43(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 55 kA
  • RS Stock No. 209-7063
  • Mfr. Part No. 3VA2116-5HN42-0AA0
Each
PHP83,629.73(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4867
  • Mfr. Part No. 3VA2580-7KQ42-0AA0
Each
PHP520,602.29(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels
  • RS Stock No. 157-319
  • Mfr. Part No. 3VA2225-7HN42-0AA0
Each
PHP194,774.98(exc. VAT)
In Stock
Bourns 0.5A Resettable Fuse, 30V
  • RS Stock No. 245-9179
  • Mfr. Part No. MF-MSHT050KX-2
Each (On a Tape of 10)
PHP61.936(exc. VAT)
Temporarily out of stock
Schneider Electric Canalis White Busbar Trunking, W54 mm x, L3m, Aluminium
  • RS Stock No. 276-9232
  • Mfr. Part No. KSA100ED43012
Each
PHP51,696.05(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 3A, 125V ac/dc
  • RS Stock No. 219-6248
  • Mfr. Part No. 0154003.DRT
Each (In a Pack of 10)
PHP180.31(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 20A Current Rating, 2P Poles, 300mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8794
  • Mfr. Part No. 5SU1656-6KK20
Each
PHP10,322.53(exc. VAT)
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT Single Pole 240V ac Voltage Rating Clip-On,
  • RS Stock No. 339-332
  • Mfr. Part No. BGL16050
Each
PHP20,583.31(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3320
  • Mfr. Part No. A9DS1610
Each
PHP17,678.49(exc. VAT)
In Stock
Better World
ABB, Tmax XT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 236-7379
  • Mfr. Part No. 1SDA067601R1 XT2H 160 TMA 80A FF
Each
PHP30,490.58(exc. VAT)
Temporarily out of stock
Miniature circuit breaker, 16 A, 1p
  • RS Stock No. 611-268
  • Mfr. Part No. PLSM-D16-Q-MW
Each
PHP2,263.58(exc. VAT)
Temporarily out of stock
Miniature circuit breaker, 16 A, 3p
  • RS Stock No. 611-269
  • Mfr. Part No. PLSM-D16/3-MW
Each
PHP6,836.96(exc. VAT)
Temporarily out of stock
Miniature circuit breaker, 16 A, 1p
  • RS Stock No. 611-255
  • Mfr. Part No. PLSM-B16-Q-MW
Each
PHP1,432.99(exc. VAT)
Temporarily out of stock
ABB Plastic Consumer Unit Accessories, IP41 1SLM006500A
  • RS Stock No. 286-4933
  • Mfr. Part No. 1SLM006500A1969
Each
PHP1,417.36(exc. VAT)
Temporarily out of stock
ABB, SACE FORMULA MCCB Molded Case Circuit Breaker 1P 16A, Fixed Mount
  • RS Stock No. 231-9297
  • Mfr. Part No. 1SDA074641R1 XT1N 125 TMF 50-500 3p F F
Each
PHP10,466.66(exc. VAT)
Temporarily out of stock
Schneider Electric Cross Elbow Busbar Trunking, 290 → 1200mm, 630A, Canalis Series
  • RS Stock No. 335-017
  • Mfr. Part No. KSA630DZE41F
Each
PHP210,284.99(exc. VAT)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELHK111 3 Pole 415V ac Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 275-0234
  • Mfr. Part No. IELHK111-1-61F-15.0-AD-01-V
1 Box of 5
PHP78,181.32(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 630A, Breaking Capacity 36kA
  • RS Stock No. 260-9803
  • Mfr. Part No. LV563505
Each
PHP138,886.71(exc. VAT)
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