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

50613 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 6 A, Type C, 100 V, 12 V, 133 V, 220 V, 240 V, 60 V
  • RS Stock No. 791-3290
  • Mfr. Part No. A9F54106
Subtotal (1 unit)
£27.19(exc. VAT)
In Stock
RS PRO 30A Rail Mount Fuse Holder for 5 x 20mm Fuse, 1P, 500V
  • RS Stock No. 242-0497
Subtotal (1 bag of 10 units)
£30.42(exc. VAT)
In Stock
Europa Residual Current Circuit Breaker with Overload Protection, 16 A Current Rating, 2-Pole, 30 mA Trip Sensitivity,
  • RS Stock No. 153-3459
  • Mfr. Part No. EUBLMC16C30A
Subtotal (1 unit)
£69.96(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 1-Pole, 6 A, Type C, 240 V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0204
Subtotal (1 unit)
£8.57(exc. VAT)
In Stock
Eaton NZM Door Coupling Handle for use with NZM1, N(S)1
  • RS Stock No. 259-654
  • Mfr. Part No. 271449 NZM1-XTVDVR-NA
Subtotal (1 unit)
£116.83(exc. VAT)
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 16 A, Type C, 12 V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3382
  • Mfr. Part No. A9F54316
Subtotal (1 unit)
£106.92(exc. VAT)
Being discontinued
RS PRO 6.3 A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-425
Subtotal (1 pack of 10 units)
£2.85(exc. VAT)
In Stock
RS PRO Fuse Kit
  • RS Stock No. 893-8530
Subtotal (1 unit)
£70.38(exc. VAT)
In Stock
Europa EUR1 RCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 210-4747
  • Mfr. Part No. EUR125.30/2A
Subtotal (1 unit)
£42.60(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 16 A, Type C, 240 V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0181
Subtotal (1 unit)
£18.94(exc. VAT)
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9562
  • Mfr. Part No. 00950011XXN
Subtotal (1 unit)
£45.97(exc. VAT)
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 65A Current
  • RS Stock No. 272-937
  • Mfr. Part No. GV3P65
Subtotal (1 unit)
£241.14(exc. VAT)
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 16 A, Type C, 240 V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Subtotal (1 unit)
£24.20(exc. VAT)
In Stock
Contactum 2 Steel Consumer Unit, 63 A, BS EN 61439-3 IP4X Defender
  • RS Stock No. 184-9102
  • Mfr. Part No. DD026MS
Subtotal (1 unit)
£67.59(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 6 A, Type C, 240 V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0186
Subtotal (1 unit)
£18.87(exc. VAT)
In Stock
Eaton PXF-A RCCB, 63A, 3+N Pole, 30mA, Type A, 400V ac
  • RS Stock No. 490-462
  • Mfr. Part No. 236780 PXF-63/4/003-A
Subtotal (1 unit)
£118.02(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)
£17.38(exc. VAT)
In Stock
ABB, Tmax, 1SDA05 Molded Case Circuit Breaker 3-Pole 400 A, Breaking Capacity 70 kA, Fixed
  • RS Stock No. 237-5962
  • Mfr. Part No. 1SDA054323R1 T5N400 FF PR222-LSIG 400A
Subtotal (1 unit)
£1,386.85(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 4 A, Type C, 240 V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0185
Subtotal (1 unit)
£21.28(exc. VAT)
In Stock
RS PRO 20A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2523
Subtotal (1 pack of 5 units)
£20.34(exc. VAT)
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