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

102 of 999+
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 4A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3382
  • Mfr. Part No. A9F73204
Each
PHP10,845.41(exc. VAT)
Phoenix Contact Surge Protector, 40kA, 385V ac, DIN Rail Mount
  • RS Stock No. 509-828
  • Mfr. Part No. 1199369
Each
PHP14,137.05(exc. VAT)
Siemens SENTRON Busbar, 690V
  • RS Stock No. 266-583
  • Mfr. Part No. 8US1211-1NS10
Each
PHP6,043.11(exc. VAT)
500A Tag Fuse, 86 x 150mm, 400V
  • RS Stock No. 263-471
  • Mfr. Part No. 500NHG3BI-400
1 Pack of 3
PHP5,154.79(exc. VAT)
Schneider Electric, PowerPact Circuit breaker 2P 70A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 339-242
  • Mfr. Part No. BDL26070LU
Each
PHP25,486.51(exc. VAT)
ABB S203L MCB, 3P, 10A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-077
  • Mfr. Part No. 2CDS243701R0104
Each
PHP5,492.18(exc. VAT)
ABB, XT1H MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-7286
  • Mfr. Part No. 1SDA067458R1 XT1H 160 TMD 63A FF
Each
PHP35,612.94(exc. VAT)
Better World
Schneider Electric RCD, 25A, 2 Pole
  • RS Stock No. 219-9171
  • Mfr. Part No. M9R81225
Each
PHP27,582.20(exc. VAT)
Eaton xEffect MCB, 3P, 100A Curve B, 400V AC, 20 kA Breaking Capacity
  • RS Stock No. 246-363
  • Mfr. Part No. 174513 AZ-3-B100
Each
PHP23,092.93(exc. VAT)
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 3 Pole 525V Voltage Rating Clip-On, 70A
  • RS Stock No. 358-215
  • Mfr. Part No. BGL36070LU
Each
PHP79,265.21(exc. VAT)
Littelfuse Polyamide Panel Mount Fuse Cover for 6.3 x 32mm Fuse, IP40
  • RS Stock No. 769-0158
  • Mfr. Part No. 81600000005
Each (In a Pack of 5)
PHP94.40(exc. VAT)
Eaton 350A British Standard Fuse, FM, 690 V ac, 500V dc, 80 → 85mm
  • RS Stock No. 156-9112
  • Mfr. Part No. 350FM
Each
PHP10,829.78(exc. VAT)
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 232-0089
  • Mfr. Part No. 1SDA054400R1 T5N630 FF PR221-LS 630A
Each
PHP214,250.25(exc. VAT)
Eaton 6A DI Bottle Fuse, E16 Thread Size, gG, 500V ac
  • RS Stock No. 181-8647
  • Mfr. Part No. 6D16
Each
PHP324.21(exc. VAT)
Siemens SENTRON Interlock Kit
  • RS Stock No. 277-0845
  • Mfr. Part No. 3WA9111-0BA21
1 Set
PHP12,957.66(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 209-5267
  • Mfr. Part No. 3VA5225-6ED31-0AA0
Each
PHP109,530.67(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 4P 320A, Fixed Mount
  • RS Stock No. 250-4234
  • Mfr. Part No. 1SDA054531R1
Each
PHP472,848.47(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 1.2kA, Breaking Capacity 34 kA, Fixed Mount
  • RS Stock No. 127-172
  • Mfr. Part No. 179330 N4-4-1200-S15-PV-NA
Each
PHP671,873.97(exc. VAT)
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-172
  • Mfr. Part No. 3VA6610-6JQ46-0AA0
Each
PHP967,703.88(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 1.1kA, Breaking Capacity 34 kA, Fixed Mount
  • RS Stock No. 127-175
  • Mfr. Part No. 179592 N4-4-1100-S15-PV-NA
Each
PHP618,326.27(exc. VAT)
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