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

221 of 999+
In Stock
Wurth Elektronik PA Base Mount Fuse Holder Cover for 5 x 20mm Fuse
  • RS Stock No. 893-0596
  • Mfr. Part No. 696122003001
Each (In a Pack of 10)
PHP12.375(exc. VAT)
Temporarily out of stock
Miniature circuit breaker, 8 A, 1p
  • RS Stock No. 611-267
  • Mfr. Part No. PLSM-C8-MW
Each
PHP1,934.13(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 201-5320
  • Mfr. Part No. 1065313
Each
PHP9,923.70(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 25A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9844
  • Mfr. Part No. 3VA1125-3ED42-0AA0
Each
PHP28,787.19(exc. VAT)
Temporarily out of stock
ABB Tmax XT Changeover Contact for use with Circuit Breaker
  • RS Stock No. 232-0188
  • Mfr. Part No. 1SDA066448R1 AUX-C 3Q+1SY 24VDC XT2..4
Each
PHP10,071.68(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-246
  • Mfr. Part No. 3VA5120-6ED31-1AA0
Each
PHP32,778.14(exc. VAT)
In Stock
Better World
Schneider Electric Multi 9 C60BP MCB, 2P, 20A Curve D, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2447
  • Mfr. Part No. M9F43220
Each
PHP9,526.68(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7807
  • Mfr. Part No. C16N3TM160
Each
PHP84,840.84(exc. VAT)
Temporarily out of stock
Schneider Electric ComPact Control Plate for use with ComPact NS, ComPact NSX, MasterPact NT, MasterPact NT Switch
  • RS Stock No. 247-1721
  • Mfr. Part No. 29363
Each
PHP38,533.58(exc. VAT)
In Stock
Better World
Schneider Electric Surge Suppressor Unit, 127 → 240V ac
  • RS Stock No. 210-9822
  • Mfr. Part No. LA4FRCP
Each
PHP7,757.10(exc. VAT)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 315mA, 250V ac
  • RS Stock No. 767-5197
Each (In a Pack of 10)
PHP19.545(exc. VAT)
Temporarily out of stock
ABB Tmax XT Key Lock for use with XT3
  • RS Stock No. 237-6112
  • Mfr. Part No. 1SDA066610R1 KLC XT3 RONIS
Each
PHP7,444.20(exc. VAT)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 25 kA
  • RS Stock No. 249-215
  • Mfr. Part No. 3VA6610-5HL42-0AA0
Each
PHP591,618.96(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 110A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-428
  • Mfr. Part No. 3VA5211-6ED41-2AA0
Each
PHP150,673.70(exc. VAT)
In Stock
Schurter OGN-SMD Series Thermoplastic Fuse Cover for 5 x 20mm Fuse
  • RS Stock No. 269-3797
  • Mfr. Part No. 0853.0571
Each
PHP56.27(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 2P, 32A Curve C, 230V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-673
  • Mfr. Part No. 5SY8532-7
Each
PHP7,924.36(exc. VAT)
In Stock
Eaton RCCB, 25A, 1+N Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 667-0605
  • Mfr. Part No. 235390 PFIM-25/2/003-MW
Each
PHP9,814.43(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IEG1 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0193
  • Mfr. Part No. IEG1-1-72-20.0-A-21-V
1 Box of 5
PHP14,719.32(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 3, 4 630A, Fixed Mount
  • RS Stock No. 247-1834
  • Mfr. Part No. 33538
Each
PHP147,147.60(exc. VAT)
Temporarily out of stock
Siemens 630A Tag Fuse, NH3, 690V
  • RS Stock No. 608-732
  • Mfr. Part No. 3NC3236-1U
1 Pack of 3
PHP37,860.83(exc. VAT)
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