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

1639 of 999+
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 85 kA
  • RS Stock No. 209-6890
  • Mfr. Part No. 3VA2010-6KP32-0AA0
Each
PHP93,140.77(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-445
  • Mfr. Part No. 3VA6580-7HL46-0AA0
Each
PHP584,287.87(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IUGN66 2 Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0291
  • Mfr. Part No. IUGN66-1-72-10.0
Each
PHP8,729.15(exc. VAT)
Better World
ABB, XT4H MCCB 4P 16A, Fixed Mount
  • RS Stock No. 236-6702
  • Mfr. Part No. 1SDA068346R1 XT4H 160 TMD 16A FF
Each
PHP67,986.86(exc. VAT)
ABB SU200 M MCB, 4P, 15A Curve C, 480V AC, 15 kA Breaking Capacity
  • RS Stock No. 203-652
  • Mfr. Part No. 2CDS274337R0154
Each
PHP30,516.56(exc. VAT)
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-678
  • Mfr. Part No. 3VA5212-5GD41-0AA0
Each
PHP98,207.47(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 16A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9629
  • Mfr. Part No. 3VA10963ED420AA0
Each
PHP27,308.95(exc. VAT)
Schneider Electric PowerPact Circuit Breaker for use with PowerPact
  • RS Stock No. 444-319
  • Mfr. Part No. NLGL36400U31X
Each
PHP534,083.84(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3641
  • Mfr. Part No. 3VA2025-5JQ46-0AA0
Each
PHP146,606.00(exc. VAT)
Better World
Siemens, SENTRON MCCB 1P 50A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9361
  • Mfr. Part No. 3VA1150-5ED16-0AA0
Each
PHP12,670.77(exc. VAT)
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-198
  • Mfr. Part No. 3VA6610-7JQ46-0AA0
Each
PHP1,041,014.78(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3784
  • Mfr. Part No. 3VA2125-6HN36-0AA0
Each
PHP58,004.08(exc. VAT)
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-912
  • Mfr. Part No. 3VA6560-5HM36-0AA0
Each
PHP295,442.93(exc. VAT)
Better World
ABB, XT4H MCCB 4P 250A, Fixed Mount
  • RS Stock No. 236-6799
  • Mfr. Part No. 1SDA068540R1 XT4H 250 Ekip I 250A FF
Each
PHP100,023.76(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - LELH11 2 Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0365
  • Mfr. Part No. LELH11-1-62-15.0-AF-01-V
Each
PHP9,964.53(exc. VAT)
SIBA SMD Non Resettable Fuse 5A, 250V
  • RS Stock No. 736-8700P
  • Mfr. Part No. 160016.5
Each (Supplied on a Reel)
PHP143.006(exc. VAT)
Siemens ALPHA Cover for use with ALPHA 400/630
  • RS Stock No. 211-3839
  • Mfr. Part No. 8GK4501-1KK32
Each
PHP5,254.01(exc. VAT)
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , Fixed
  • RS Stock No. 127-716
  • Mfr. Part No. 183402 IZMX16B4-P16F-1
Each
PHP958,377.06(exc. VAT)
Phoenix Contact 2A T Cartridge Fuse, 5 x 20mm
  • RS Stock No. 512-401
  • Mfr. Part No. 1457326
1 Pack of 10
PHP542.80(exc. VAT)
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-266
  • Mfr. Part No. 3VA5212-5ED41-0AA0
Each
PHP98,207.47(exc. VAT)
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