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

33476 Products showing for Fuses & Circuit Breakers

48 of 999+
Temporarily out of stock
Eaton Circuit Trip Circuit Trip for use with IZMX…
  • RS Stock No. 132-426
  • Mfr. Part No. 183982 IZMX-PXRV-T-1
Each
PHP202,593.72(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-7802
  • Mfr. Part No. C16N3MA150
Each
PHP75,310.99(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS Stock No. 232-0099
  • Mfr. Part No. 1SDA054478R1 T5N400 FF TMA 400A
Each
PHP128,135.65(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 Cover for use with Linergy FH Horizontal Comb Busbar
  • RS Stock No. 776-2837
  • Mfr. Part No. A9XPE410
Each
PHP720.38(exc. VAT)
In Stock
ABB MISTRAL65 Key Lock for use with MISTRAL65, MISTRAL65H
  • RS Stock No. 232-0309
  • Mfr. Part No. 1SL1931A00 MISTRAL
Each
PHP725.47(exc. VAT)
In Stock
ABB XT1, XT3 Removable Lock for use with Tmax XT
  • RS Stock No. 831-9204
  • Mfr. Part No. 1SDA066588R1
Each
PHP1,755.61(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-9405
  • Mfr. Part No. C10B4
Each
PHP26,562.98(exc. VAT)
Temporarily out of stock
ABB RCCB, 63A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 246-2241
  • Mfr. Part No. 2CCF544110E0631 F404A-LF63/0.03
Each
PHP67,725.20(exc. VAT)
Unavailable
Schneider Electric, NSX MCCB 3P 630A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 219-8378
  • Mfr. Part No. LV432899
Each
PHP402,413.74(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 429-058
  • Mfr. Part No. C080L35AFM
Each
PHP1,023,734.67(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , DIN Rail
  • RS Stock No. 127-553
  • Mfr. Part No. 183478 IZMX16N3-P16W-1
Each
PHP842,912.10(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 2A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 244-030
  • Mfr. Part No. 102180 FAZ-D2/2-NA
Each
PHP12,316.23(exc. VAT)
In Stock
brennenstuhl BD 4 Phase Distribution Board, 4 Way, 30 mA
  • RS Stock No. 270-2188
  • Mfr. Part No. 1154911
Each
PHP14,530.70(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels
  • RS Stock No. 156-674
  • Mfr. Part No. 3VA2325-0KP42-0AA0
Each
PHP364,465.03(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-276
  • Mfr. Part No. C080N35AFM
Each
PHP764,239.01(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 346-984
  • Mfr. Part No. C080N360FM
Each
PHP830,907.94(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 432-850
  • Mfr. Part No. C080H35EFM
Each
PHP861,485.92(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 200A, Fixed Mount
  • RS Stock No. 260-7900
  • Mfr. Part No. C25F4TM200D1
Each
PHP154,884.22(exc. VAT)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 221-1037
  • Mfr. Part No. LV432901
Each
PHP431,061.83(exc. VAT)
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 4 Pole 525V Voltage Rating Clip-On, 60A
  • RS Stock No. 358-218
  • Mfr. Part No. BGL46060LU
Each
PHP94,116.53(exc. VAT)
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