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

97 of 999+
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 20A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 429-481
  • Mfr. Part No. BDF26020
Each
PHP41,513.03(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Terminal Kit for use with INX40…3…20F, INX40…3…25F, IZMX40…3…20F, IZMX40…3…25F
  • RS Stock No. 132-610
  • Mfr. Part No. 184175 IZMX-TF403-2500F-1
Each
PHP64,611.05(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7470
  • Mfr. Part No. C10V42D040
Each
PHP120,718.85(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 541-3338
  • Mfr. Part No. 0451.250MRL
Each (In a Pack of 10)
PHP72.522(exc. VAT)
Temporarily out of stock
ABB 35A Tag Fuse, 150 x 40 x 72mm, 500V
  • RS Stock No. 251-3469
  • Mfr. Part No. 1SCA022627R4810
1 Box of 3
PHP4,839.30(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 4P, 32A Curve C, 400V AC, 12 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9324
  • Mfr. Part No. A9F94432
Each
PHP27,749.16(exc. VAT)
Last RS stock
Mersen 10A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0600
  • Mfr. Part No. A1014576 / FR10GR69V10
Each
PHP736.33(exc. VAT)
Temporarily out of stock
Siemens for use with 5SP, 5SY, 5TE8, 5TL1
  • RS Stock No. 223-8222
  • Mfr. Part No. 5ST3807
Each
PHP2,001.09(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 30A Curve C, 400V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-316
  • Mfr. Part No. 5SY4330-7
Each
PHP12,106.66(exc. VAT)
In Stock
RS PRO MCB/RCBO Lock for use with MCB, RCBO, RCCB, Main Isolator
  • RS Stock No. 798-2233
Each (In a Pack of 3)
PHP163.077(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5182
  • Mfr. Part No. 3VA2163-6KP46-0AA0
Each
PHP127,090.26(exc. VAT)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 20A, Fixed
  • RS Stock No. 122-412
  • Mfr. Part No. LV510852
Each
PHP4,639.23(exc. VAT)
In Stock
Eaton xEffect FAZ MCB, 1P, 16A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 245-987
  • Mfr. Part No. 132743 FAZ-B16/1-RT
Each
PHP1,730.14(exc. VAT)
Temporarily out of stock
Siemens 800A German Standard Fuse, NH2, 800V, 110mm
  • RS Stock No. 210-6975
  • Mfr. Part No. 3NE3338-8
Each (In a Pack of 3)
PHP22,164.01(exc. VAT)
Temporarily out of stock
Eaton 32A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 182-1769
  • Mfr. Part No. 170M1562D
Each
PHP4,627.75(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 127-520
  • Mfr. Part No. 183455 IZMX16H4-P12F-1
Each
PHP820,327.57(exc. VAT)
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 4P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 211-6024
  • Mfr. Part No. 3VA1163-4EE42-0AA0
Each
PHP31,338.69(exc. VAT)
Temporarily out of stock
ABB 3 Phase Busbar, 690V ac
  • RS Stock No. 140-523
  • Mfr. Part No. 2CCS800900R0101
Each
PHP9,475.34(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 3P, 32A Curve B, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-885
  • Mfr. Part No. A9K11332
Each
PHP1,697.18(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 50A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9369
  • Mfr. Part No. 3VA1150-6ED46-0AA0
Each
PHP36,427.74(exc. VAT)
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