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

125 of 999+
In Stock
Schurter SMD Non Resettable Fuse 630mA, 32 V ac, 63V dc
  • RS Stock No. 665-7374
  • Mfr. Part No. 3413.0214.22
Each (In a Pack of 10)
PHP40.356(exc. VAT)
In Stock
ABB PS1 1 Phase Busbar, 400V ac, 17.5mm Pitch
  • RS Stock No. 489-6489
  • Mfr. Part No. 2CDL210001R1012
Each
PHP551.65(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 3P 25A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-138
  • Mfr. Part No. C11N34V025L
Each
PHP231,416.86(exc. VAT)
Limited stock
Limitor Thermal Fuse +94°C 15 A, 250V ac
  • RS Stock No. 797-6049
  • Mfr. Part No. SF 090 R
Each (In a Pack of 10)
PHP72.129(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA5 125
  • RS Stock No. 269-7102
  • Mfr. Part No. 3VA9134-0JG11
Each (In a Pack of 4)
PHP726.183(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 50A, Breaking Capacity 50 kA, DIN Rail Mount
  • RS Stock No. 178-7983
  • Mfr. Part No. LV426781
Each
PHP77,699.12(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 15A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 269-696
  • Mfr. Part No. 3VA5295-5ED31-2AA0
Each
PHP64,147.04(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-643
  • Mfr. Part No. 3VA5145-5ED31-0AA0
Each
PHP26,252.28(exc. VAT)
Temporarily out of stock
Schurter PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 173-9870
  • Mfr. Part No. 0034.6011
Each (In a Bag of 100)
PHP32.571(exc. VAT)
In Stock
Siemens ALPHA Busbar
  • RS Stock No. 226-0831
  • Mfr. Part No. 8GK9733-0KK10
Each
PHP1,100.58(exc. VAT)
Temporarily out of stock
Schurter SMD Non Resettable Fuse 1A, 125 V dc, 250V ac
  • RS Stock No. 173-8134
  • Mfr. Part No. 3404.2416.22
1 Reel of 1000
PHP63,092.40(exc. VAT)
In Stock
Schneider Electric Enclosure
  • RS Stock No. 418-0122
  • Mfr. Part No. 14599
Each
PHP6,413.91(exc. VAT)
In Stock
Littelfuse Spring Brass PCB Mount Fuse Clip for 6.3 x 32mm Cartridge Fuse
  • RS Stock No. 787-4249
  • Mfr. Part No. 01020071Z
Each (In a Pack of 10)
PHP13.771(exc. VAT)
In Stock
Dehn Two Spring Terminal for use with Blitzductor XT/XTU
  • RS Stock No. 786-9392
  • Mfr. Part No. SAK BXT LR
1 Pair
PHP1,236.50(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-349
  • Mfr. Part No. 3VA6150-1MS31-0AA0
Each
PHP50,951.08(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 32A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 229-623
  • Mfr. Part No. 107787 NZMN2-A32-BT-NA
Each
PHP49,338.24(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 1+N, 50A Curve C, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-140
  • Mfr. Part No. 2CDS271103R0504
Each
PHP13,895.98(exc. VAT)
In Stock
Siemens 80A Centred Tag Fuse, NH00, 690V ac
  • RS Stock No. 396-376
  • Mfr. Part No. 3NE8020-1
Each (In a Pack of 3)
PHP5,330.997(exc. VAT)
In Stock
Schneider Electric 440V ac Circuit Breaker Circuit Trip for use with Circuits
  • RS Stock No. 130-543
  • Mfr. Part No. C16F44B160
Each
PHP297,441.19(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4660
  • Mfr. Part No. 3VA2140-7JP32-0AA0
Each
PHP95,376.38(exc. VAT)
1
125
1676
Results per page

Related links