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

22 of 999+
Temporarily out of stock
ABB S800U MCB, 2P, 70A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-490
  • Mfr. Part No. 2CCS862017R0707
Each
PHP19,124.81(exc. VAT)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Arrester, DIN Rail Mount
  • RS Stock No. 129-560
  • Mfr. Part No. 2800103
Each
PHP10,577.05(exc. VAT)
In Stock
ABB FH200 RCCB, 63A, 4 Pole, 30mA, Type AC, 230/400V ac
  • RS Stock No. 540-1666
  • Mfr. Part No. 2CSF204006R1630 FH204 AC-63/0,03
Each
PHP9,973.92(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 272-0182
  • Mfr. Part No. 3VA1580-5EF32-0AA0
Each
PHP191,017.96(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60N MCB Mini Circuit Breaker, 1P, 16A Curve C, 230V AC, 6000 A Breaking Capacity
  • RS Stock No. 588-872
  • Mfr. Part No. A9K02116
Each
PHP287.88(exc. VAT)
Being discontinued
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-431
Each (In a Pack of 10)
PHP24.907(exc. VAT)
Limited stock
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-813
  • Mfr. Part No. 568720
Each
PHP597.26(exc. VAT)
Temporarily out of stock
Hager NEN MCB, 2P, 63A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4969
  • Mfr. Part No. NEN263
Each
PHP16,836.48(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 600A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9795
  • Mfr. Part No. LV563306
Each
PHP109,676.69(exc. VAT)
Temporarily out of stock
Siemens 5SV43 RCCB, 63A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 328-512
  • Mfr. Part No. 5SV4316-0MB
Each
PHP23,166.24(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)
In Stock
Bourns 0.5A Resettable Fuse, 60V
  • RS Stock No. 647-8493
  • Mfr. Part No. MF-R050
Each (In a Pack of 10)
PHP28.542(exc. VAT)
In Stock
ABB Tmax T Motor Operator for use with MCCB
  • RS Stock No. 232-0141
  • Mfr. Part No. 1SDA060398R1 MOE 220-250VACDC T6
Each
PHP70,973.45(exc. VAT)
In Stock
Dehn Stainless Steel Lightning Earth Clamp Nominal Rod dia. 8-10mm
  • RS Stock No. 786-9358
  • Mfr. Part No. M8 UNI PV
Each
PHP1,260.34(exc. VAT)
In Stock
Bourns 3A Resettable Fuse, 30V
  • RS Stock No. 647-8572
  • Mfr. Part No. MF-R300
Each (In a Pack of 10)
PHP26.007(exc. VAT)
In Stock
Littelfuse 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4410
  • Mfr. Part No. 0217002.MXP
Each (In a Pack of 10)
PHP13.828(exc. VAT)
In Stock
Better World
Schneider Electric iID RCCB, 25A, 2 Pole, 30mA
  • RS Stock No. 734-9125
  • Mfr. Part No. A9R11225
Each
PHP10,749.59(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Electronic Circuit Breaker 125A 500V ComPacT NSX, 2 channels , Fixed
  • RS Stock No. 339-523
  • Mfr. Part No. C16S2TM125
Each
PHP44,730.13(exc. VAT)
Temporarily out of stock
Siemens 3 Phase Surge Protector, 100kA, DIN Rail Mount
  • RS Stock No. 211-0179
  • Mfr. Part No. 5SD7412-1
Each
PHP52,041.63(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 200A, Breaking Capacity 65 kA, DIN Rail Mount
  • RS Stock No. 358-358
  • Mfr. Part No. NJGF36200TW
Each
PHP253,973.88(exc. VAT)
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