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

1628 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 50A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-429
  • Mfr. Part No. 3VA5150-5ED21-1AA0
Each
PHP25,427.80(exc. VAT)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 32A, Fixed
  • RS Stock No. 122-498
  • Mfr. Part No. LV510542
Each
PHP15,009.96(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-965
  • Mfr. Part No. 3VA5215-5GD41-2AA0
Each
PHP125,908.71(exc. VAT)
Temporarily out of stock
Eaton 224A NH Fuse, 63 x 40 x 150mm, 500V ac
  • RS Stock No. 255-240
  • Mfr. Part No. 224NHG02BI NH FUSE 224A 500V GL/GG SIZE 02
1 Pack of 3
PHP2,307.69(exc. VAT)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6272
  • Mfr. Part No. 1SDA067186R1 FC CuAl 1x240 XT3 8PCS+ADP
Each
PHP32,258.54(exc. VAT)
In Stock
Schurter Surface Mount Fuse 2A, 32V ac
  • RS Stock No. 270-7965
  • Mfr. Part No. 3413.0119.22
Each
PHP33.38(exc. VAT)
Temporarily out of stock
Bourns 80A Tag Fuse, 38mm, 800V ac/dc, 24.1mm
  • RS Stock No. 254-4234
  • Mfr. Part No. PF-NT5-80
Each (In a Box of 10)
PHP1,552.487(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4009
  • Mfr. Part No. 3VA2110-7MP36-0AA0
Each
PHP82,702.13(exc. VAT)
Temporarily out of stock
Eaton Surge Protector, 15kA, 1.8kV
  • RS Stock No. 124-930
  • Mfr. Part No. 177260 SPPVT12-10
Each
PHP25,907.86(exc. VAT)
Temporarily out of stock
Siemens 24V ac Circuit Trip
  • RS Stock No. 223-7623
  • Mfr. Part No. 5TT4407-2
Each
PHP5,783.22(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-985
  • Mfr. Part No. 3VA6110-7KP31-0AA0
Each
PHP154,686.00(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 315mA, 277 V ac, 250V dc
  • RS Stock No. 830-4167P
  • Mfr. Part No. 3403.0269.23
Each (Supplied on a Reel)
PHP104.727(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7810
  • Mfr. Part No. C16N42D160
Each
PHP133,232.51(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8816
  • Mfr. Part No. 5SV1316-6LK06
Each
PHP15,170.02(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 225A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 147-333
  • Mfr. Part No. 3VA5222-7EC31-1AA0
Each
PHP132,613.73(exc. VAT)
Last RS stock
Littelfuse PC Board Non Resettable Fuse, Radial 315mA, 125V ac
  • RS Stock No. 738-3302P
  • Mfr. Part No. 39603150000
Each (Supplied on a Reel)
PHP68.614(exc. VAT)
In Stock
Bourns Surface Mount Fuse 500mA, 65V dc
  • RS Stock No. 245-9236P
  • Mfr. Part No. SF-1206SA050M-2
Each (Supplied on a Reel)
PHP57.42(exc. VAT)
Temporarily out of stock
Mersen 25A NH Fuse, NH000, 500V ac
  • RS Stock No. 136-0558
  • Mfr. Part No. E201185C / NH000GG50V25/3
Each (In a Box of 3)
PHP454.527(exc. VAT)
Temporarily out of stock
Siemens ALPHA Adapter Kit for use with ALPHA 1600 DIN
  • RS Stock No. 629-144
  • Mfr. Part No. 8GK9400-0KK45
1 Set
PHP18,783.67(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3988
  • Mfr. Part No. 3VA2110-7JP32-0AA0
Each
PHP99,442.15(exc. VAT)
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