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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

51178 Products showing for Fuses & Circuit Breakers

2 of 999+
In Stock
Europa ECUBP Blanking Plate for use with Consumer Units, Garage Units & Shower Units
  • RS Stock No. 201-7936
  • Mfr. Part No. ECUBP
Subtotal (1 pair)
£4.01(exc. VAT)
In Stock
ABB 4 Plastic Consumer Unit, 63A, IEC 60670, EN 60439-3 IP65 MISTRAL65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Subtotal (1 unit)
£23.18(exc. VAT)
In Stock
RS PRO FT Fuse Kit
  • RS Stock No. 893-8543
Subtotal (1 unit)
£173.29(exc. VAT)
In Stock
Eaton 50A Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 703-8443
  • Mfr. Part No. C14G50
Subtotal (1 pack of 10 units)
£20.89(exc. VAT)
In Stock
Siemens 100A NH Fuse NH000 500V ac
  • RS Stock No. 396-102
  • Mfr. Part No. 3NA3830
Subtotal (1 pack of 3 units)
£57.90(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 4A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3376
  • Mfr. Part No. A9F54304
Subtotal (1 unit)
£129.67(exc. VAT)
In Stock
WAGO 857 Electronic Circuit Breaker 6A 24V, DIN Rail
  • RS Stock No. 303-311
  • Mfr. Part No. 787-3861/600-000
Subtotal (1 unit)
£30.32(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 16A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3344
  • Mfr. Part No. A9F54216
Subtotal (1 unit)
£72.15(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 6A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3332
  • Mfr. Part No. A9F54206
Subtotal (1 unit)
£80.18(exc. VAT)
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 2-Pole, 30 mA Trip Sensitivity, Type
  • RS Stock No. 201-6932
  • Mfr. Part No. 2CSR275180R1164 DS201 M C16 A30
Subtotal (1 unit)
£133.31(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 63A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3580
  • Mfr. Part No. A9F55363
Subtotal (1 unit)
£149.67(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 10A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3341
  • Mfr. Part No. A9F54210
Subtotal (1 unit)
£73.51(exc. VAT)
In Stock
RS Better World
Schneider Electric Compact Ins, Compact Inv, Compact Nsx, Easypact Cvs, Powerpact Multistandard Phase Barrier for use
  • RS Stock No. 221-1194
  • Mfr. Part No. LV429329
Subtotal (1 unit)
£24.56(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)
£2.98(exc. VAT)
In Stock
Eaton 32 A Neutral Link x 9 mm
  • RS Stock No. 262-483
  • Mfr. Part No. 32CMLC
Subtotal (1 pack of 10 units)
£35.83(exc. VAT)
In Stock
Eaton 16A British Standard Fuse A2 660V ac, 73 mm
  • RS Stock No. 415-143
  • Mfr. Part No. TIA16
Subtotal (1 pack of 5 units)
£44.65(exc. VAT)
In Stock
Schurter 3.15A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 167-8092
  • Mfr. Part No. 0034.3122
Subtotal (1 pack of 10 units)
£4.15(exc. VAT)
Stocked by manufacturer
Eaton, NZM, NZM Molded Case Circuit Breaker 3-Pole 100A, Breaking Capacity 18.5 kA, Fixed
  • RS Stock No. 257-071
  • Mfr. Part No. 281267 NZMB1-S100-CNA
Subtotal (1 unit)
£567.09(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
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 16A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3568
  • Mfr. Part No. A9F55316
Subtotal (1 unit)
£113.61(exc. VAT)
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