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

145 of 999+
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 1P, 1A Curve K, 230/400V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-864
  • Mfr. Part No. 2CDS271001R0217
Each
PHP8,509.96(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 500mA Curve C, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3470
  • Mfr. Part No. A9F74270
Each
PHP10,482.89(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 32A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9877
  • Mfr. Part No. 3VA1132-3ED22-0AA0
Each
PHP17,925.06(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 300mA Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-351
  • Mfr. Part No. 2CDS272061R0117
Each
PHP23,528.98(exc. VAT)
In Stock
Littelfuse 0.5A Resettable Fuse, 24V dc
  • RS Stock No. 517-7111P
  • Mfr. Part No. MINISMDC050F-2
Each (Supplied on a Reel)
PHP19.80(exc. VAT)
In Stock
Better World
Siemens Sentron for use with 3VA Series Circuit Breaker
  • RS Stock No. 874-4540
  • Mfr. Part No. 3VA9988-0BL33
Each
PHP10,633.61(exc. VAT)
In Stock
Schneider Electric Multi9 M9F1 MCB, 1P, 4A Curve D, 415V AC, 72V DC, 3 kA Breaking Capacity
  • RS Stock No. 212-194
  • Mfr. Part No. M9F12104
Each
PHP4,400.85(exc. VAT)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.8kV, DIN Rail Mount
  • RS Stock No. 121-150
  • Mfr. Part No. 167624 SPCT2-385-3+NPE
Each
PHP17,497.23(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9774
  • Mfr. Part No. 3VA1116-4FF42-0AA0
Each
PHP70,442.16(exc. VAT)
Temporarily out of stock
Siemens SENTRON Terminal for use with 3VA6 150/250
  • RS Stock No. 269-7109
  • Mfr. Part No. 3VA9143-0JH12
Each (In a Pack of 3)
PHP1,345.10(exc. VAT)
Temporarily out of stock
Eaton 63A Fuse Holder for 109 x 35 x 159mm Fuse, 1P, 690V ac
  • RS Stock No. 261-372
  • Mfr. Part No. RS63PH
1 Pack of 10
PHP40,869.55(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 20A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-241
  • Mfr. Part No. 3VA5120-6ED11-1AA0
Each
PHP16,351.18(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 20A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-546
  • Mfr. Part No. 5SL6020-7MF
Each
PHP18,061.90(exc. VAT)
In Stock
Better World
Siemens, SENTRON MCCB 3P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4165
  • Mfr. Part No. 3VA1112-3ED36-0AA0
Each
PHP49,631.55(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2711
  • Mfr. Part No. A9XPH106
Each
PHP792.50(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-114
  • Mfr. Part No. 3VA6560-6JQ32-2AA0
Each
PHP483,118.83(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 2P, 10A Curve B, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-702
  • Mfr. Part No. 2CCS862001R0131
Each
PHP13,796.05(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 1P, 3A Curve C, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-847
  • Mfr. Part No. 2CDS271337R0034
Each
PHP7,357.44(exc. VAT)
Temporarily out of stock
ABB Tmax XT Neutral Kit for use with Tmax XT
  • RS Stock No. 236-6867
  • Mfr. Part No. 1SDA069144R1 TA NEUT EXT 160A XT2
Each
PHP9,991.75(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-504
  • Mfr. Part No. 3VA5220-5ED31-2AA0
Each
PHP98,342.90(exc. VAT)
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