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

33483 Products showing for Fuses & Circuit Breakers

6 of 999+
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 20A
  • RS Stock No. 221-0898
  • Mfr. Part No. BGL36020LU
Each
PHP36,184.88(exc. VAT)
Schneider Electric Resi9 R9F2 MCB, 3P, 10A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-025
  • Mfr. Part No. R9F23310
Each
PHP6,647.22(exc. VAT)
Better World
Schneider Electric, EasyPact MCCB 3P 60A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 269-6105
  • Mfr. Part No. EZC100H3060
Each
PHP19,912.50(exc. VAT)
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti 9 Range
  • RS Stock No. 790-9452
  • Mfr. Part No. A9D56620
Each
PHP22,146.84(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4143
  • Mfr. Part No. 3VA1110-3ED36-0AA0
Each
PHP15,708.10(exc. VAT)
RS PRO 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 563-766
Each (In a Pack of 10)
PHP21.385(exc. VAT)
Schneider Electric Compact Undervoltage Release for use with NS630b
  • RS Stock No. 354-356
  • Mfr. Part No. 33822
Each
PHP31,523.69(exc. VAT)
ABB 24 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1906
  • Mfr. Part No. 1SL1204A00 65P12X22
Each
PHP4,858.52(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 2P, 20A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-360
  • Mfr. Part No. 2CDS272061R0487
Each
PHP22,539.05(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 3P 500A, Fixed Mount
  • RS Stock No. 250-4187
  • Mfr. Part No. 1SDA054465R1
Each
PHP277,060.53(exc. VAT)
Siemens ALPHA Busbar
  • RS Stock No. 226-0832
  • Mfr. Part No. 8GK9733-0KK20
Each
PHP2,071.93(exc. VAT)
Schneider Electric EasyPact Electronic Circuit Breaker 75A, Fixed
  • RS Stock No. 122-419
  • Mfr. Part No. LV510861
Each
PHP4,639.23(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 700A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-511
  • Mfr. Part No. 3VA5570-7EC32-1AA0
Each
PHP391,638.15(exc. VAT)
Hager NFN MCB, 1P, 3A, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 602-156
  • Mfr. Part No. NFN103
Each
PHP4,196.12(exc. VAT)
RS PRO Single Phase Industrial Surge Protector, 40kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-797
Each
PHP4,113.61(exc. VAT)
WJ Furse Earth Rod
  • RS Stock No. 153-2966
  • Mfr. Part No. 7TCA083120R0011 RB005
Each (In a Pack of 10)
PHP1,909.652(exc. VAT)
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.1kV, DIN Rail Mount
  • RS Stock No. 101-748
Each
PHP2,235.84(exc. VAT)
ABB S802C MCB, 2P, 50A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-468
  • Mfr. Part No. 2CCS882001R0504
Each
PHP8,322.17(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 2P, 60A, Type Z, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-075
  • Mfr. Part No. 2CDS272061R0588
Each
PHP37,686.13(exc. VAT)
Littelfuse 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 787-4120
  • Mfr. Part No. 0287015.PXCN
Each (In a Pack of 10)
PHP14.751(exc. VAT)
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