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

1662 of 999+
Siemens 40A Centred Tag Fuse, NH1, 500V
  • RS Stock No. 230-2946
  • Mfr. Part No. 3NA6117
Each (In a Pack of 3)
PHP1,826.877(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4662
  • Mfr. Part No. 3VA2140-7JP42-0AA0
Each
PHP107,605.51(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 50A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9359
  • Mfr. Part No. 3VA1150-4GE46-0AA0
Each
PHP31,388.18(exc. VAT)
Schneider Electric EasyPact Electronic Circuit Breaker 160A, Plug In
  • RS Stock No. 122-426
  • Mfr. Part No. LV516313P
Each
PHP10,160.99(exc. VAT)
Eaton IZMX/INX Terminal Kit for use with INX40…3…32F, IZMX40…3…32F
  • RS Stock No. 132-612
  • Mfr. Part No. 184176 IZMX-TF403-3200F-1
Each
PHP90,372.95(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-9533
  • Mfr. Part No. C10R3TM040
Each
PHP75,656.14(exc. VAT)
Littelfuse SMD Non Resettable Fuse 1.25A, 125V
  • RS Stock No. 738-2914P
  • Mfr. Part No. 04511.25MRL
Each (Supplied on a Reel)
PHP65.464(exc. VAT)
25A Cartridge Fuses, 63.5 x 359mm
  • RS Stock No. 253-515
  • Mfr. Part No. 24OEGMA25
1 Pack of 3
PHP73,977.04(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 630A, Fixed Mount
  • RS Stock No. 260-8239
  • Mfr. Part No. C63R46E630
Each
PHP504,098.60(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9594
  • Mfr. Part No. 3VA10403ED460AA0
Each
PHP27,536.14(exc. VAT)
ABB, Tmax XT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-7288
  • Mfr. Part No. 1SDA067460R1 XT1H 160 TMD 100A FF
Each
PHP41,222.43(exc. VAT)
Schneider Electric, PowerPact MCCB 3P 400A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 428-709
  • Mfr. Part No. NLJL36400U31X
Each
PHP624,465.18(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3956
  • Mfr. Part No. 3VA2110-6HM46-0AA0
Each
PHP98,959.62(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3869
  • Mfr. Part No. 3VA2063-7HN46-0AA0
Each
PHP99,483.55(exc. VAT)
Bourns Surface Mount Fuse 6A, 50 V dc, 63 V dc
  • RS Stock No. 245-9210P
  • Mfr. Part No. SF-0603SPA600R-2
Each (Supplied on a Reel)
PHP72.92(exc. VAT)
Eaton RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type D, FRBdM Range
  • RS Stock No. 120-990
  • Mfr. Part No. 168273 FRBDM-D6/1N/003-G/A
Each
PHP12,427.22(exc. VAT)
Schurter SMD Non Resettable Fuse 0.37A, 125V ac/dc
  • RS Stock No. 188-4588
  • Mfr. Part No. 3-103-094
Each (On a Tape of 5)
PHP232.28(exc. VAT)
Nidec Components 2.5A Resettable Fuse, 30V
  • RS Stock No. 637-6454
  • Mfr. Part No. PRCP-R250-0-99
Each (In a Pack of 5)
PHP49.308(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4602
  • Mfr. Part No. 3VA2140-0HN42-0AA0
Each
PHP118,982.29(exc. VAT)
Better World
ABB, Tmax XT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 236-6835
  • Mfr. Part No. 1SDA068585R1 XT4L 250 Ekip LSI 250A FF
Each
PHP243,967.97(exc. VAT)
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