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

33503 Products showing for Fuses & Circuit Breakers

316 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 32A, Breaking Capacity 25 kA
  • RS Stock No. 209-6986
  • Mfr. Part No. 3VA1132-3ED32-0AA0
Each
PHP19,797.37(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LELK111 3 Pole Panel Mount, 30A Current Rating
  • RS Stock No. 275-0387
  • Mfr. Part No. LELK111-1-63F-30.0-U-01-V
1 Box of 5
PHP88,866.60(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 15A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 235-156
  • Mfr. Part No. 102289 FAZ-C15/3-RT
Each
PHP16,348.33(exc. VAT)
Temporarily out of stock
Schneider Electric EasyPact CVS100...250 Thermal Circuit Breaker - EasyPact CVS 4 Pole 440V ac Voltage Rating Fixed,
  • RS Stock No. 124-530
  • Mfr. Part No. LV510311
Each
PHP25,101.16(exc. VAT)
In Stock
Eaton 315A Bolted Tag Fuse, B2, 415V ac, 133mm
  • RS Stock No. 181-8506
  • Mfr. Part No. EFS315
Each
PHP2,466.19(exc. VAT)
In Stock
Better World
Schneider Electric 25A 356x167mm Fuse Block, 230 - 690V
  • RS Stock No. 219-8948
  • Mfr. Part No. KSB32CF5
Each
PHP13,301.18(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 1.5A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-587
  • Mfr. Part No. 102239 FAZ-C1,5/3-NA
Each
PHP16,128.40(exc. VAT)
Temporarily out of stock
Eaton RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS Stock No. 123-665
  • Mfr. Part No. 170799 FRBMM-C20/2/003-LIA
Each
PHP10,694.64(exc. VAT)
Temporarily out of stock
Siemens 63A Tag Fuse, 137mm, 1kV, 106.6mm
  • RS Stock No. 608-859
  • Mfr. Part No. 3NE3218-0MK
1 Pack of 3
PHP14,109.76(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 2P, 3A Curve D, 400V AC, 60V DC, 40 kA Breaking Capacity
  • RS Stock No. 610-525
  • Mfr. Part No. 5SY7203-8
Each
PHP9,905.45(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 3A Curve D, 400V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-369
  • Mfr. Part No. 5SY8603-8
Each
PHP21,718.62(exc. VAT)
Temporarily out of stock
Eaton Eaton xComfort Installaton Accessory for use with Cable Retainer, Conductor Terminal, Device Support rails, Front
  • RS Stock No. 124-953
  • Mfr. Part No. 178870 KLV-1HWP-4PR
Each
PHP3,847.87(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 80A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 178-8201
  • Mfr. Part No. LV426326
Each
PHP41,797.50(exc. VAT)
Temporarily out of stock
Legrand Circuit Breaker for use with Cndustrial Cartridge
  • RS Stock No. 266-0235
  • Mfr. Part No. 0 215 33
Each
PHP5,451.55(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-333
  • Mfr. Part No. 3VA6140-8HL31-2AA0
Each
PHP85,773.75(exc. VAT)
In Stock
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9175
  • Mfr. Part No. A9E18030
Each
PHP2,451.14(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Acti9 iC60 MCB, 2P, 50A Curve B, 500V AC, 10 kA Breaking Capacity
  • RS Stock No. 429-210
  • Mfr. Part No. A9F93250
Each
PHP31,944.49(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 268-392
  • Mfr. Part No. 3VA6115-0HM31-0AA0
Each
PHP176,679.27(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 80A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9439
  • Mfr. Part No. 3VA1180-6GF46-0AA0
Each
PHP34,622.59(exc. VAT)
Temporarily out of stock
Eaton xEffect - FRCmM RCCB, 40A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 123-597
  • Mfr. Part No. 170432 FRCMM-40/2/003-A
Each
PHP8,585.88(exc. VAT)
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