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

1656 of 999+
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LEG66 2 Pole Panel Mount, 25A Current Rating
  • RS Stock No. 275-0342
  • Mfr. Part No. LEG66-1-62F-25.0-A-01-V
1 Box of 5
PHP36,796.32(exc. VAT)
Temporarily out of stock
Eaton NZM Electronic Circuit Breaker 140A NZM, 3 channels , Fixed
  • RS Stock No. 120-720
  • Mfr. Part No. 169026 NZML2-ME140-SVE
Each
PHP131,875.35(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 315mA, 250V ac
  • RS Stock No. 284-5287
  • Mfr. Part No. 0034.6610
Each (In a Pack of 10)
PHP23.377(exc. VAT)
Temporarily out of stock
Eaton, Moeller Circuit breaker 3, 4
  • RS Stock No. 282-7114
  • Mfr. Part No. 259836 NZM2-XR24-30DC
Each
PHP80,247.44(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, SENTRON Range
  • RS Stock No. 211-9600
  • Mfr. Part No. 5SU1354-3KK10
Each
PHP14,003.12(exc. VAT)
Temporarily out of stock
Siemens SENTRON Trip Unit
  • RS Stock No. 277-0948
  • Mfr. Part No. 3WA9111-0EM22
Each
PHP3,103.85(exc. VAT)
Temporarily out of stock
Bourns Thermal Fuse +85°C 40 A, 28V
  • RS Stock No. 258-6376
  • Mfr. Part No. LC85AY-1
Each (In a Bag of 5000)
PHP40.862(exc. VAT)
Temporarily out of stock
Eaton xEffect - FRCmM-125 Type A RCCB, 125A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 123-381
  • Mfr. Part No. 171164 FRCMM-125/2/003-A
Each
PHP52,493.94(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3687
  • Mfr. Part No. 3VA2025-7KP42-0AA0
Each
PHP151,842.41(exc. VAT)
Temporarily out of stock
ABB OS Interlock for use with Switch Fuses
  • RS Stock No. 259-9731
  • Mfr. Part No. 1SCA106535R1001
Each
PHP10,855.08(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4652
  • Mfr. Part No. 3VA2140-7HM32-0AA0
Each
PHP79,280.24(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3710
  • Mfr. Part No. 3VA2025-8JP42-0AA0
Each
PHP126,714.04(exc. VAT)
Temporarily out of stock
Eaton Eaton Distribution Parts End Cap for use with Z-profile
  • RS Stock No. 253-574
  • Mfr. Part No. 264932 Z-V-35/AK/3P
1 Pack of 10
PHP886.00(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-304
  • Mfr. Part No. 3VA6440-6KP31-0AA0
Each
PHP326,966.61(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4556
  • Mfr. Part No. 3VA2125-7HM32-0AA0
Each
PHP79,280.24(exc. VAT)
Temporarily out of stock
Schurter SMD Non Resettable Fuse 250mA, 63 V dc, 125V ac
  • RS Stock No. 173-8024
  • Mfr. Part No. 3413.0010.22
1 Reel of 1000
PHP48,888.00(exc. VAT)
Temporarily out of stock
Siemens RCCB, 25A, 2 Pole, 30mA, Type F, 230V
  • RS Stock No. 269-9754
  • Mfr. Part No. 5SV3322-3KK60
Each
PHP49,870.92(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9335
  • Mfr. Part No. 3VA1140-5GE46-0AA0
Each
PHP34,195.51(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 1P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9392
  • Mfr. Part No. 3VA1163-5ED12-0AA0
Each
PHP12,266.93(exc. VAT)
In Stock
Rockwell Automation FB243 Busbar, 1000V
  • RS Stock No. 281-5998
  • Mfr. Part No. FB243352Q1
Each (In a Pack of 2)
PHP5,377.215(exc. VAT)
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