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

1652 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-776
  • Mfr. Part No. 3VA6440-7KL31-2AA0
Each
PHP390,013.99(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3813
  • Mfr. Part No. 3VA2040-8JQ46-0AA0
Each
PHP166,151.66(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 3P, 1.6A, Type Z, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-666
  • Mfr. Part No. 2CDS273337R0258
Each
PHP30,899.05(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Terminal Extention for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1148
  • Mfr. Part No. LV429222
Each
PHP4,823.63(exc. VAT)
In Stock
Bourns Thermal Fuse +77°C 50 A, 28V
  • RS Stock No. 258-6406
  • Mfr. Part No. SC77AAA
Each (In a Pack of 10)
PHP55.44(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4840
  • Mfr. Part No. 3VA2580-5HN32-0KK0
Each
PHP293,960.88(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4715
  • Mfr. Part No. 3VA2163-6HK46-0AA0
Each
PHP68,564.74(exc. VAT)
Last RS stock
Schurter PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 167-6254
  • Mfr. Part No. 7010.6340.13
Each (In a Pack of 5)
PHP150.058(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LELB1 Single Pole Panel Mount, 65A Current Rating
  • RS Stock No. 275-0361
  • Mfr. Part No. LELB1-1-51-65.0-1-01-V
Each
PHP6,093.25(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-221
  • Mfr. Part No. 3VA5210-5GD41-0AA0
Each
PHP87,422.05(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-476
  • Mfr. Part No. 3VA5217-6EC41-0AA0
Each
PHP171,758.14(exc. VAT)
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-6046
  • Mfr. Part No. 3VA2010-5HN46-0AA0
Each
PHP63,818.04(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3809
  • Mfr. Part No. 3VA2040-8JP46-0AA0
Each
PHP129,280.73(exc. VAT)
Temporarily out of stock
Eaton xEffect - FRCmM-125 Type A RCCB, 125A, 2 Pole, 300mA, 240V ac
  • RS Stock No. 123-389
  • Mfr. Part No. 171170 FRCMM-125/2/03-G/A
Each
PHP147,313.44(exc. VAT)
In Stock
Bourns Surface Mount Fuse 4.5A, 65V dc
  • RS Stock No. 245-9264P
  • Mfr. Part No. SF-1206SA450M-2
Each (Supplied on a Reel)
PHP56.26(exc. VAT)
Temporarily out of stock
Eaton RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-303
  • Mfr. Part No. 168268 FRBDM-C10/1N/003-G/A
Each
PHP11,748.89(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 4 channels
  • RS Stock No. 155-889
  • Mfr. Part No. 3VA2440-6JP42-0AA0
Each
PHP344,544.78(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7309
  • Mfr. Part No. 1SDA067482R1 TMA 160-1600 XT4 4p
Each
PHP43,725.78(exc. VAT)
Last RS stock
RS PRO SMD Non Resettable Fuse 400mA, 125V
  • RS Stock No. 182-4204P
Each (Supplied in a Box)
PHP52.264(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3889
  • Mfr. Part No. 3VA2063-8HL42-0AA0
Each
PHP79,614.51(exc. VAT)
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