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

51007 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 6A, Type C, 100V, 12 V, 133 V, 220 V, 240 V, 60 V AC,
  • RS Stock No. 791-3290
  • Mfr. Part No. A9F54106
Subtotal (1 unit)
£27.19(exc. VAT)
Being discontinued
RS PRO 6.3A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-425
Subtotal (1 pack of 10 units)
£2.88(exc. VAT)
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 703-8386
  • Mfr. Part No. C10G10
Subtotal (1 pack of 10 units)
£11.01(exc. VAT)
In Stock
RS PRO FT Fuse Kit
  • RS Stock No. 893-8537
Subtotal (1 unit)
£92.12(exc. VAT)
In Stock
Eaton 1A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1212
  • Mfr. Part No. S500-1-R
Subtotal (1 pack of 10 units)
£1.83(exc. VAT)
In Stock
RS PRO 10 A In-line Fuse Holder for 5 x 20 mm, 250 V
  • RS Stock No. 237-5259
Subtotal (1 unit)
£2.22(exc. VAT)
In Stock
Eaton 4A British Standard Fuse A1 550V ac, 44.5 mm
  • RS Stock No. 415-115
  • Mfr. Part No. NIT4
Subtotal (1 pack of 5 units)
£27.35(exc. VAT)
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9556
  • Mfr. Part No. 00940957XXN
Subtotal (1 unit)
£45.49(exc. VAT)
In Stock
WAGO 1 to 10 A 787 Electronic Circuit Breaker 10A 24V, 4 channels, DIN Rail
  • RS Stock No. 303-297
  • Mfr. Part No. 787-3664
Subtotal (1 unit)
£100.35(exc. VAT)
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9562
  • Mfr. Part No. 00950011XXN
Subtotal (1 unit)
£92.39(exc. VAT)
Being discontinued
RS PRO 500mA T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-633
Subtotal (1 pack of 10 units)
£2.88(exc. VAT)
In Stock
RS PRO Earthing Strap Stainless Steel Stainless Steel 32 mm Diameter 10 mm² Diameter 12 mm Diameter
  • RS Stock No. 390-2448
Subtotal (1 pack of 10 units)
£17.55(exc. VAT)
In Stock
RS PRO 40A British Standard Fuse A3 550V ac, 73.5 mm
  • RS Stock No. 521-2630
Subtotal (1 pack of 5 units)
£47.28(exc. VAT)
In Stock
RS PRO Fuse Kit
  • RS Stock No. 541-3108
Subtotal (1 pack of 10 units)
£3.27(exc. VAT)
In Stock
RS PRO 6.3A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 247-4059
Subtotal (1 pack of 10 units)
£14.30(exc. VAT)
In Stock
RS PRO 7.5A Brown Car Fuse, 32V dc
  • RS Stock No. 563-772
Subtotal (1 pack of 10 units)
£3.81(exc. VAT)
In Stock
Murrelektronik Limited MICO MICO Electronic Circuit Breaker 6A 24V, 4 channels, DIN Rail
  • RS Stock No. 123-6689
  • Mfr. Part No. 9000-41034-0100600
Subtotal (1 unit)
£138.63(exc. VAT)
In Stock
SIBA 80A NH Fuse NH000 500V ac
  • RS Stock No. 421-716
  • Mfr. Part No. 20-000-13/80E1
Subtotal (1 pack of 3 units)
£22.56(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 1-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0204
Subtotal (1 unit)
£8.66(exc. VAT)
In Stock
Eaton 63A British Standard Fuse A3 660V ac, 73 mm
  • RS Stock No. 415-222
  • Mfr. Part No. TIS63
Subtotal (1 unit)
£18.49(exc. VAT)
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