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
Fuses - PCB
Fuses - PCB

33502 Products showing for Fuses & Circuit Breakers

193 of 999+
Mersen Surge Protector, 50kA, 1800V (Volts), DIN Rail Mount
  • RS Stock No. 361-610
  • Mfr. Part No. 44020401
Each
PHP11,798.10(exc. VAT)
Eaton 7A Bolted Tag Fuse, 240 V ac, 150V dc, 41.8mm
  • RS Stock No. 181-8748
  • Mfr. Part No. 7LET
Each
PHP2,608.96(exc. VAT)
Nidec Components 0.17A Resettable Fuse, 60V
  • RS Stock No. 637-6303
  • Mfr. Part No. PRCP-R017-0-99
Each (In a Pack of 10)
PHP35.124(exc. VAT)
Better World
Siemens, 0AA0 MCCB 4P 50A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-6023
  • Mfr. Part No. 3VA1150-5EE42-0AA0
Each
PHP31,279.62(exc. VAT)
Siemens SENTRON 5SY4 MCB, 2P, 8A, Type A, 230V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-581
  • Mfr. Part No. 5SY4508-5
Each
PHP6,442.21(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9391
  • Mfr. Part No. 3VA1163-4GE46-0AA0
Each
PHP31,388.18(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 20A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9825
  • Mfr. Part No. 3VA1120-4GE46-0AA0
Each
PHP31,388.18(exc. VAT)
Bourns 1.8A Resettable Fuse, 33V
  • RS Stock No. 691-7594
  • Mfr. Part No. MF-SM185/33-2
Each (In a Pack of 5)
PHP21.66(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9719
  • Mfr. Part No. 3VA1112-4FF46-0AA0
Each
PHP63,271.04(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9368
  • Mfr. Part No. 3VA1150-6ED36-0AA0
Each
PHP21,063.64(exc. VAT)
Distribution Board 400x500x240mm
  • RS Stock No. 577-378
  • Mfr. Part No. WDB 6
Each
PHP5,120.08(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9803
  • Mfr. Part No. 3VA1116-6GD42-0AA0
Each
PHP55,723.63(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9403
  • Mfr. Part No. 3VA1163-6GD46-0AA0
Each
PHP26,735.53(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-8029
  • Mfr. Part No. C25V4TM250
Each
PHP237,709.98(exc. VAT)
Schneider Electric Multi9 M9F1 MCB, 2P, 10A Curve D, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-012
  • Mfr. Part No. M9F12210
Each
PHP8,566.96(exc. VAT)
Fuse - Strip 60 w/ Housing 48VDC, 400A
  • RS Stock No. 522-972
  • Mfr. Part No. 157.5701.6401
1 Bag of 25
PHP29,055.29(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9342
  • Mfr. Part No. 3VA1140-6GF42-0AA0
Each
PHP29,718.82(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 110 kA, DIN Rail Mount
  • RS Stock No. 272-0168
  • Mfr. Part No. 3VA1510-7EF42-0AA0
Each
PHP578,404.44(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-8165
  • Mfr. Part No. C40W32D250
Each
PHP306,233.78(exc. VAT)
Schneider Electric, Canalis Series
  • RS Stock No. 341-478
  • Mfr. Part No. KSA400ET4AF70
Each
PHP116,301.88(exc. VAT)
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