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

81 of 999+
Temporarily out of stock
Siemens ALPHA Adapter Kit for use with ALPHA 400 DIN
  • RS Stock No. 216-4833
  • Mfr. Part No. 8GK4101-8KK12
Each
PHP15,101.89(exc. VAT)
In Stock
Schneider Electric R9E RCCB, 63A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 276-8942
  • Mfr. Part No. R9ERC263
Each
PHP10,868.15(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 3P, 70A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-258
  • Mfr. Part No. 2CCS863017R0707
Each
PHP29,933.09(exc. VAT)
In Stock
Schneider Electric Acti9 Terminal Block for use with Distribution Board
  • RS Stock No. 339-356
  • Mfr. Part No. SEA9BP
Each
PHP1,050.81(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FRCdM RCCB, 25A, 4 Pole, 30mA, 240/415V ac
  • RS Stock No. 127-407
  • Mfr. Part No. 179530 FRCDM-25/4/003-G/BFQ
Each
PHP64,689.99(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-667
  • Mfr. Part No. 3VA5280-6EF41-2AA0
Each
PHP110,699.46(exc. VAT)
In Stock
SIBA 100A Centred Tag Fuse, NH1, 500V ac
  • RS Stock No. 421-750
  • Mfr. Part No. 20-003-13/100A
Each
PHP876.30(exc. VAT)
Temporarily out of stock
Schneider Electric Masterpact Controller for use with Compact NS100 → 630, Compact NS630b → 1600,
  • RS Stock No. 247-1725
  • Mfr. Part No. 29380
Each
PHP111,452.68(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 32A, Breaking Capacity 16 kA
  • RS Stock No. 209-6956
  • Mfr. Part No. 3VA1032-2ED32-0AA0
Each
PHP20,621.82(exc. VAT)
In Stock
Eaton RCD, 25A, 4 Pole, 300mA, Type A
  • RS Stock No. 922-8660
  • Mfr. Part No. 235437 PFIM-25/4/03-A-MW
Each
PHP13,762.12(exc. VAT)
Temporarily out of stock
Lovato 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 216-8276
  • Mfr. Part No. FB01D1P
Each
PHP765.70(exc. VAT)
Temporarily out of stock
Siemens SENTRON Cable Cage for use with Circuit Breaker 3VA2
  • RS Stock No. 272-0205
  • Mfr. Part No. 3VA9167-0KB02
Each
PHP1,182.08(exc. VAT)
Temporarily out of stock
ABB S302 MCB, 2P, 1A Curve D, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-899
  • Mfr. Part No. 2CDS382001R0011
Each
PHP22,325.91(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4578
  • Mfr. Part No. 3VA2125-7KQ32-0AA0
Each
PHP135,307.82(exc. VAT)
In Stock
Better World
Schneider Electric Circuit Trip
  • RS Stock No. 219-9358
  • Mfr. Part No. LV429410
Each
PHP14,595.66(exc. VAT)
In Stock
Eaton xEffect xEffect - FAZ-T MCB, 1+N, 40A Curve B, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 129-333
  • Mfr. Part No. 142510 FAZT-B40/1N
Each
PHP5,836.81(exc. VAT)
Temporarily out of stock
Eaton MCB, 3P, 10A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 244-021
  • Mfr. Part No. 101347 PLI-D10/3N
Each
PHP12,096.30(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 1.5A, 125V
  • RS Stock No. 738-2876
  • Mfr. Part No. 015401.5DRT
Each (In a Pack of 10)
PHP160.427(exc. VAT)
In Stock
SIBA 16A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 314-4816
  • Mfr. Part No. 50-179-06/16A
Each (In a Pack of 5)
PHP468.582(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 2A Curve D, 400V AC, 60V DC, 70 kA Breaking Capacity
  • RS Stock No. 610-283
  • Mfr. Part No. 5SY8602-8
Each
PHP21,718.62(exc. VAT)
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