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

314 of 999+
In Stock
Eaton 20A NH Fuse, NH000, 690V ac
  • RS Stock No. 181-8714
  • Mfr. Part No. 20NHM000B-690
Each
PHP724.58(exc. VAT)
Temporarily out of stock
Siemens 150A NH Fuse, NH3, 690 / 440V ac/dc
  • RS Stock No. 269-8329
  • Mfr. Part No. 3NC8423-0C
Each (In a Pack of 3)
PHP21,747.28(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 654-687
  • Mfr. Part No. A9DH3625
Each
PHP19,230.43(exc. VAT)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0322
  • Mfr. Part No. 8GK1081-4KK20
Each
PHP67,632.74(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 4P, 80A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-592
  • Mfr. Part No. 5SY4680-7
Each
PHP36,980.34(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 2P, 3A, Type Z, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-620
  • Mfr. Part No. 2CDS272337R0318
Each
PHP21,973.75(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 32A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-296
  • Mfr. Part No. 5SL6032-7MF
Each
PHP19,655.58(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 500mA, 125V ac
  • RS Stock No. 226-0793
  • Mfr. Part No. 3950500000
Each (In a Pack of 10)
PHP89.099(exc. VAT)
Temporarily out of stock
Siemens SENTRON V 3 Phase Busbar, 690V, 60mm Pitch
  • RS Stock No. 217-6969
  • Mfr. Part No. 8US1923-1AA01
Each
PHP930.06(exc. VAT)
Temporarily out of stock
ABB Front Terminal for use with S6 800, T6 800
  • RS Stock No. 250-4495
  • Mfr. Part No. 1SDA013956R1
Each
PHP18,726.63(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 4P, 1.6A Curve C, 480V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-873
  • Mfr. Part No. 2CDS274337R0974
Each
PHP35,499.03(exc. VAT)
Currently unavailable
Omron, Energy Sensor
  • RS Stock No. 215-4116
  • Mfr. Part No. KM1-PMU2A-FLK
Each
PHP59,691.86(exc. VAT)
In Stock
Phoenix Contact Surge Protector, 8kA, 700V (Volts), DIN Rail Mount
  • RS Stock No. 267-1813
  • Mfr. Part No. 1334595
Each
PHP15,876.96(exc. VAT)
Temporarily out of stock
Schneider Electric Panelset Busbar
  • RS Stock No. 444-417
  • Mfr. Part No. NSYVPFN2B4
Each
PHP149,714.79(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 570A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 341-520
  • Mfr. Part No. C63F37E570
Each
PHP844,622.21(exc. VAT)
In Stock
RS PRO Three Phase Industrial Surge Protector, 50kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-738
Each
PHP10,447.55(exc. VAT)
In Stock
ABB System Pro M Compact S200 MCB, 2P, 4A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 204-258
  • Mfr. Part No. 2CDS252001R0045
Each
PHP15,252.38(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3828
  • Mfr. Part No. 3VA2063-5JP36-0AA0
Each
PHP74,832.94(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 4 channels
  • RS Stock No. 156-717
  • Mfr. Part No. 3VA2340-8KP42-0AA0
Each
PHP362,989.53(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SL66 MCB, 4P, 16A Curve B, 440V AC, 62.5V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-357
  • Mfr. Part No. 5SL6616-6
Each
PHP8,762.64(exc. VAT)
1
314
1676
Results per page

Related links