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

169 of 999+
In Stock
Schneider Electric Cable Connection Kit for use with ComPact NS630b → 1600 Circuit Breaker
  • RS Stock No. 247-1850
  • Mfr. Part No. 33641
Each
PHP38,100.22(exc. VAT)
In Stock
Better World
Schneider Electric, Acti 9 MCCB 3P 25A, Breaking Capacity 30 kA, DIN Rail Mount
  • RS Stock No. 776-3348
  • Mfr. Part No. A9F90325
Each
PHP23,947.80(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, 250V ac, DIN Rail Mount
  • RS Stock No. 801-6340
  • Mfr. Part No. 2950064
Each
PHP1,793.45(exc. VAT)
Temporarily out of stock
Mersen 6A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0474
  • Mfr. Part No. Y1014574 / FR10GR69V6
Each (In a Box of 10)
PHP588.26(exc. VAT)
In Stock
ABB Busbar for use with Miniature Circuit Breakers
  • RS Stock No. 250-4772
  • Mfr. Part No. 2CDL701301R0320
1 Box of 10
PHP3,320.45(exc. VAT)
Temporarily out of stock
Siemens 90 → 110V ac Shunt Trip Shunt trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1973
  • Mfr. Part No. 3RV2902-2DF0
Each
PHP2,470.43(exc. VAT)
Limited stock
Schneider Electric Acti 9 3 Phase Busbar, 230 → 400V, 18mm Pitch
  • RS Stock No. 191-9523
  • Mfr. Part No. A9XPN712
Each
PHP2,899.44(exc. VAT)
Last RS stock
ABB RCCB, 16A, 4 Pole, 100mA, Type C, 415V ac
  • RS Stock No. 246-2430
  • Mfr. Part No. 2CCG001724R0001
Each
PHP26,546.59(exc. VAT)
Temporarily out of stock
Siemens 400A Centred Tag Fuse, NH2, 500V ac
  • RS Stock No. 203-2115
  • Mfr. Part No. 3NA6260
Each (In a Pack of 3)
PHP2,627.87(exc. VAT)
Temporarily out of stock
Siemens SENTRON Locking Kit
  • RS Stock No. 277-0871
  • Mfr. Part No. 3WA9111-0BB12
Each
PHP13,825.07(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 2P, 20A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-153
  • Mfr. Part No. 2CCS862001R0204
Each
PHP12,765.67(exc. VAT)
Temporarily out of stock
Hager Terminal Block
  • RS Stock No. 251-2059
  • Mfr. Part No. KN04N
Each
PHP911.71(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric iID RCD, 40A, 100mA
  • RS Stock No. 776-3691
  • Mfr. Part No. A9R12240
Each
PHP13,741.38(exc. VAT)
In Stock
Bourns 0.065A Resettable Fuse, 220V
  • RS Stock No. 692-6778P
  • Mfr. Part No. CMF-RL50-0
Each (Supplied in a Bag)
PHP32.01(exc. VAT)
In Stock
Mersen 50A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 238-4013
  • Mfr. Part No. E220965
Each
PHP2,940.55(exc. VAT)
In Stock
Mersen 125A Bolted Tag Fuse, B2, 460 V dc, 690V ac, 111mm
  • RS Stock No. 178-1136
  • Mfr. Part No. G1006624 / BTF69V125M160
Each (In a Pack of 5)
PHP2,562.352(exc. VAT)
In Stock
Mersen 6A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V
  • RS Stock No. 377-0459
  • Mfr. Part No. B222917
Each (In a Pack of 5)
PHP120.37(exc. VAT)
Temporarily out of stock
Siemens SENTRON Cover for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-735
  • Mfr. Part No. 3VW9723-0WF30
1 Kit
PHP10,703.39(exc. VAT)
Temporarily out of stock
Eaton RCBO, 6A Current Rating, 2P Poles, 10mA Trip Sensitivity, Type A, Type D, FRBdM Range
  • RS Stock No. 121-005
  • Mfr. Part No. 168303 FRBDM-D6/2/001-G/A
Each
PHP15,665.27(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4225 MCB, 2P, 25A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-810
  • Mfr. Part No. 5SJ4225-8HG41
Each
PHP13,049.34(exc. VAT)
1
169
1676
Results per page

Related links