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

33476 Products showing for Fuses & Circuit Breakers

15 of 999+
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 232-0216
  • Mfr. Part No. 1SDA066807R1 XT1B 160 TMD 100A FF
Each
PHP18,828.69(exc. VAT)
Limited stock
Limitor Thermal Fuse +229°C 15 A, 250V ac
  • RS Stock No. 797-6030
  • Mfr. Part No. SF 229 R
Each (In a Pack of 10)
PHP42.098(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 320A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 210-1695
  • Mfr. Part No. 3VA1332-4EF32-0AA0
Each
PHP75,701.74(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 4A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3338
  • Mfr. Part No. A9F54204
Each
PHP8,575.95(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 5kA, 450V (Volts), DIN Rail Mount
  • RS Stock No. 254-4807
  • Mfr. Part No. 2803069
Each
PHP13,092.53(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 5A, 125V ac/dc
  • RS Stock No. 541-3300P
  • Mfr. Part No. 0251005.NRT1L
Each (Supplied in a Bag)
PHP45.346(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 2P, 10A Curve D, 440V AC, 60V DC, 40 kA Breaking Capacity
  • RS Stock No. 664-310
  • Mfr. Part No. 5SY8210-8
Each
PHP10,419.07(exc. VAT)
In Stock
Sato Parts 10A Panel Mount Fuse Holder for 6.4 x 30mm Fuse, 250V ac
  • RS Stock No. 627-2093
  • Mfr. Part No. F-4000-A
Each (In a Pack of 5)
PHP427.432(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 60A
  • RS Stock No. 221-0897
  • Mfr. Part No. BDL36060LU
Each
PHP27,274.42(exc. VAT)
In Stock
RS PRO 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 563-750
Each (In a Pack of 10)
PHP37.505(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 20A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 207-186
  • Mfr. Part No. BDL36020LU
Each
PHP36,448.47(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 260-9464
  • Mfr. Part No. C10H3TM032
Each
PHP47,946.44(exc. VAT)
Temporarily out of stock
Schneider Electric Multi9 M9F1 MCB, 4P, 32A Curve C, 440V AC, 250V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-009
  • Mfr. Part No. M9F11432
Each
PHP18,043.90(exc. VAT)
In Stock
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 1P, 6A Curve D, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-531
  • Mfr. Part No. M9F12106
Each
PHP3,242.19(exc. VAT)
Supply shortage
ABB S800U MCB, 2P, 60A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-998
  • Mfr. Part No. 2CCS862017R0605
Each
PHP17,878.04(exc. VAT)
In Stock
ABB RCBO, 63A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 231-9959
  • Mfr. Part No. 2CSR272001R1634 DS202 M AC-C63/0,03
Each
PHP18,253.49(exc. VAT)
In Stock
Schneider Electric Acti9 A9F MCB, 3P, 50A Curve C, 440V AC, 180V DC, 70 kA Breaking Capacity
  • RS Stock No. 288-7100
  • Mfr. Part No. A9F94350
Each
PHP27,552.07(exc. VAT)
Temporarily out of stock
ABB Tmax XT Motor Operator for use with MCCB
  • RS Stock No. 232-0190
  • Mfr. Part No. 1SDA066466R1 MOE XT2-XT4 220...250VAC/D
Each
PHP58,512.63(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4360 MCB, 3P, 60A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-085
  • Mfr. Part No. 5SJ4360-8HG41
Each
PHP47,800.74(exc. VAT)
Limited stock
RS PRO Rail Mount Fuse Holder
  • RS Stock No. 501-871
Each
PHP1,025.38(exc. VAT)
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