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

506 Products showing for Fuses & Circuit Breakers

1 of 26
In Stock
Schneider Electric EZ9 RCCB, 100A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-224
  • Mfr. Part No. EZ9R46291
Each
£37.86(exc. VAT)
In Stock
Schneider Electric Multi9 M9F Miniature Circuit Breaker, 2-Pole, 10 A, Type C, 500 V DC, 6 kA Breaking Capacity
  • RS Stock No. 654-140
  • Mfr. Part No. M9U21210
Each
£89.24(exc. VAT)
Temporarily out of stock
Schneider Electric 10 Metal Consumer Unit, 100 A, RoHS, UKCA, amendment 3 BS EN 61439-3, BS 7671:ed. 18 IP2X, IP3X EZ9E
  • RS Stock No. 654-223
  • Mfr. Part No. EZ9E10MCCU
Each
£53.76(exc. VAT)
In Stock
Schneider Electric R9R RCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-672
  • Mfr. Part No. R9R22225
Each
£78.00(exc. VAT)
In Stock
RS PRO 6 A AR Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 199-246
1 Pack of 10
£152.52(exc. VAT)
In Stock
Schneider Electric Acti9 A9F Miniature Circuit Breaker, 2-Pole, 16 A, Type C, 500 V AC, 125 V DC, 6 kA Breaking Capacity
  • RS Stock No. 653-861
  • Mfr. Part No. A9F74216
Each
£68.37(exc. VAT)
In Stock
Schneider Electric Acti9 Connection Unit for use with iC60 and iK60 Devices
  • RS Stock No. 655-154
  • Mfr. Part No. A9XPCD04
Each
£48.41(exc. VAT)
In Stock
Schneider Electric Multi9 M9F Miniature Circuit Breaker, 1-Pole, 6 A, Type D, 240 V AC, 240 V DC, 10 kA Breaking
  • RS Stock No. 654-531
  • Mfr. Part No. M9F12106
Each
£37.27(exc. VAT)
In Stock
Schneider Electric PowerLogic Mounting Hardware for use with PowerLogic PM5000 PM5560 Power Meter
  • RS Stock No. 654-535
  • Mfr. Part No. METSEPM55HK
Each
£40.06(exc. VAT)
Limited stock
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-813
  • Mfr. Part No. 568720
Each
£8.11(exc. VAT)
Temporarily out of stock
Siemens 20A Cartridge Fuse, 22 X 58mm
  • RS Stock No. 665-094
  • Mfr. Part No. 3NC2220
1 Pack of 5
£65.41(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPact NSX, I-Line Molded Case Circuit Breaker 3-Pole 16 A, Breaking Capacity 25 kA, Panel
  • RS Stock No. 654-699
  • Mfr. Part No. IL0163P25
Each
£293.79(exc. VAT)
In Stock
Schneider Electric RCBO, 16A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 654-647
  • Mfr. Part No. A9D67416
Each
£280.82(exc. VAT)
In Stock
Schneider Electric RCBO, 25A Current Rating, 1P+N Poles, 100mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-731
  • Mfr. Part No. A9D06825
Each
£166.42(exc. VAT)
Temporarily out of stock
Schneider Electric 12 Metal Consumer Unit, 100 A, RoHS, BS 7671:ed. 18, UKCA, amendment 3 BS EN 61439-3 IP3X, IP2X EZ9E
  • RS Stock No. 654-186
  • Mfr. Part No. EZ9E12MCCU
Each
£58.81(exc. VAT)
Temporarily out of stock
Schneider Electric A9R RCCB, 40A, 4 Pole, 30mA, Type AC, 380 → 415V ac
  • RS Stock No. 655-156
  • Mfr. Part No. A9R41440
Each
£219.98(exc. VAT)
New product - Preorder today
Fuse - Strip 60 w/ Housing 48VDC, 63A
  • RS Stock No. 522-968
  • Mfr. Part No. 157.5701.5631
1 Bag of 25
£337.70(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Easy9 Range
  • RS Stock No. 654-754
  • Mfr. Part No. EZ9TDA7632
Each
£177.24(exc. VAT)
In Stock
Schneider Electric Easy9 1+N Phase Busbar, 230V ac, 9 mm, 18 mm Pitch
  • RS Stock No. 654-221
  • Mfr. Part No. SEPNB112
Each
£53.48(exc. VAT)
In Stock
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-811
  • Mfr. Part No. 568718
Each
£4.66(exc. VAT)
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RCBOs Guide
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Fuses Guide
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Distribution Boards Guide
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