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

33476 Products showing for Fuses & Circuit Breakers

99 of 999+
In Stock
Littelfuse Non-Resettable Wire Ended Fuse 5A, 125V ac
  • RS Stock No. 738-2999P
  • Mfr. Part No. 0471005.NRT1L
Each (Supplied in a Bag)
PHP71.775(exc. VAT)
In Stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8090
  • Mfr. Part No. C40F32D400
Each
PHP246,529.32(exc. VAT)
In Stock
Littelfuse 300A Grey, White Fuse Strips Car Fuse, 48V dc
  • RS Stock No. 226-1033
  • Mfr. Part No. 157.5701.6301
Each
PHP487.87(exc. VAT)
In Stock
Mersen NH Series Plastic Tag Fuse Holder Shroud for 00 Fuse
  • RS Stock No. 375-9496
  • Mfr. Part No. G213170
Each (In a Pack of 10)
PHP248.473(exc. VAT)
In Stock
Schneider Electric RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 222-8512
  • Mfr. Part No. SEE116B03
Each
PHP4,047.90(exc. VAT)
Temporarily out of stock
Lovato Single Phase Surge Protector, 100kA, DIN Rail Mount
  • RS Stock No. 248-5665
  • Mfr. Part No. SA1B3PA320R
Each
PHP55,399.31(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 191-6075
  • Mfr. Part No. A9DA6610
Each
PHP23,219.88(exc. VAT)
In Stock
Siemens SIRIUS 3 Phase Busbar, 690V, 63mm Pitch
  • RS Stock No. 246-5178
  • Mfr. Part No. 3RV1915-3AB
Each
PHP607.15(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 500mA Curve C, 400V AC, 70 kA Breaking Capacity
  • RS Stock No. 610-659
  • Mfr. Part No. 5SY8405-7
Each
PHP19,810.90(exc. VAT)
Temporarily out of stock
ABB Tmax XT Terminal for use with Circuit Breaker
  • RS Stock No. 232-0221
  • Mfr. Part No. 1SDA066853R1 F XT2 3PCS
Each
PHP2,056.66(exc. VAT)
Temporarily out of stock
Hager BFD RCCB, 40A, 1P+N Pole, 300mA, Type F
  • RS Stock No. 602-047
  • Mfr. Part No. BFD240F
Each
PHP37,258.93(exc. VAT)
Temporarily out of stock
Weidmüller Surge Arrester, 50kA, 1000V dc, Screw Mount Mount
  • RS Stock No. 285-5287
  • Mfr. Part No. 2755960000
Each
PHP30,673.71(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5193
  • Mfr. Part No. 3VA2225-5JQ32-0AA0
Each
PHP128,989.07(exc. VAT)
In Stock
Europa 3 Phase Distribution Board, 24 Way, 125 A
  • RS Stock No. 849-6418
  • Mfr. Part No. TPN08
Each
PHP27,732.15(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 1.6A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-983
  • Mfr. Part No. 2CDS274001R0971
Each
PHP42,634.90(exc. VAT)
Temporarily out of stock
Siemens 200A Tag Fuse, 97.5mm, 700V
  • RS Stock No. 608-694
  • Mfr. Part No. 3NB1726-0KK13
1 Pack of 3
PHP17,455.60(exc. VAT)
Temporarily out of stock
Eaton MCB, 2P, 16A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 244-006
  • Mfr. Part No. 101307 PLI-D16/2
Each
PHP6,062.81(exc. VAT)
In Stock
Better World
Schneider Electric Circuit Trip for use with Acti 9 Isobar A Type Distribution Boards, Acti9 Isobar B Type Distribution
  • RS Stock No. 134-6005
  • Mfr. Part No. SEA9TB1001
Each
PHP1,627.35(exc. VAT)
In Stock
Wickmann 35A Green Blade Car Fuse, 32V dc
  • RS Stock No. 174-0720
  • Mfr. Part No. 0287035.PXCN
Each (In a Pack of 50)
PHP12.838(exc. VAT)
In Stock
HENSEL ENYSTAR Distribution Board, 63 A
  • RS Stock No. 117-449
  • Mfr. Part No. FP 1109
Each
PHP10,604.63(exc. VAT)
1
99
1674
Results per page

Related links