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

33493 Products showing for Fuses & Circuit Breakers

1633 of 999+
Temporarily out of stock
Siemens 6A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6904
  • Mfr. Part No. 3NA6801-6
Each (In a Pack of 3)
PHP4,320.403(exc. VAT)
Temporarily out of stock
Siemens ALPHA Support for use with Hinged Section Cover
  • RS Stock No. 226-2869
  • Mfr. Part No. 8GS4018-8
Each
PHP678.37(exc. VAT)
Temporarily out of stock
ABB OS Switch Disconnector for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9593
  • Mfr. Part No. 1SCA022770R3140
Each
PHP20,108.58(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 247-1786
  • Mfr. Part No. 33364
Each
PHP359,529.73(exc. VAT)
Temporarily out of stock
Mersen 315A Bolted Tag Fuse, C1, 460 V dc, 690V ac, 133mm
  • RS Stock No. 178-1144
  • Mfr. Part No. R1006633 / BTM69V315
Each
PHP9,764.57(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A IZMX/INX, 4 channels , Withdrawable
  • RS Stock No. 132-730
  • Mfr. Part No. 183787 IZMX40N4-P08W-1
Each
PHP968,309.77(exc. VAT)
Temporarily out of stock
Schurter SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 173-7990
  • Mfr. Part No. 3404.0110.22
Each (On a Reel of 750)
PHP41.976(exc. VAT)
Temporarily out of stock
Lovato 1 Phase Surge Protector, 100kA
  • RS Stock No. 216-8288
  • Mfr. Part No. SA1B1NA320R
Each
PHP55,480.38(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7795
  • Mfr. Part No. C16L4
Each
PHP80,442.90(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-696
  • Mfr. Part No. 3VA6140-7JQ31-0AA0
Each
PHP165,682.63(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-958
  • Mfr. Part No. 3VA5212-6EC41-0AA0
Each
PHP142,747.28(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3657
  • Mfr. Part No. 3VA2025-6JQ36-0AA0
Each
PHP135,386.79(exc. VAT)
Temporarily out of stock
ABB Tmax Sliding Contacts for use with Tmax T
  • RS Stock No. 237-6015
  • Mfr. Part No. 1SDA062165R1 T7-M-X1
1 Box of 1
PHP3,198.05(exc. VAT)
Temporarily out of stock
KYOCERA AVX SMD Non Resettable Fuse 1.5A, 32V
  • RS Stock No. 707-6770P
  • Mfr. Part No. F0402E1R50FSTR
Each (Supplied on a Reel)
PHP20.097(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9702
  • Mfr. Part No. 3VA11123FF460AA0
Each
PHP58,334.66(exc. VAT)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0339
  • Mfr. Part No. 8GK1082-5KK41
Each
PHP126,907.59(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1kA , 4 channels , Withdrawable
  • RS Stock No. 132-732
  • Mfr. Part No. 183788 IZMX40N4-P10W-1
Each
PHP1,007,322.24(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 4A, 63V ac/dc
  • RS Stock No. 188-4579
  • Mfr. Part No. 3-103-126
Each (On a Tape of 5)
PHP232.28(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-199
  • Mfr. Part No. 3VA6580-6HM42-0AA0
Each
PHP519,774.28(exc. VAT)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1.6A, 300V ac
  • RS Stock No. 769-3296
  • Mfr. Part No. SR-5H-1-6A-BK
Each (In a Pack of 5)
PHP59.388(exc. VAT)
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