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
Earth & Lightning Protection
Fuse Holders & Accessories
Fuses

51487 Products showing for Fuses & Circuit Breakers

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Temporarily out of stock
Eaton 400A NH Fuse NH2 500V
  • RS Stock No. 703-8759P
  • Mfr. Part No. 400NHG2B
Subtotal 1 unit (supplied in a box)
Kr. 196,42(exc. VAT)
Kr. 196,42/unit
Stocked by manufacturer
ABB, SACE Tmax XT, XT5S Molded Case Circuit Breaker 4-Pole 400A, Breaking Capacity 25 kA, Fixed
  • RS Stock No. 231-9342
  • Mfr. Part No. 1SDA100455R1 XT5S400 TMA400-4000 4pFF N
Subtotal (1 unit)
Kr. 22 110,50(exc. VAT)
Kr. 22 110,50/unit
Stocked by manufacturer
Schneider Electric, ComPact, ComPacT NSXm Molded Case Circuit Breaker 3-Pole 32A, Breaking Capacity 36 kA, Fixed
  • RS Stock No. 260-7588
  • Mfr. Part No. C11F3TM032B
Subtotal (1 unit)
Kr. 4 046,33(exc. VAT)
Kr. 4 046,33/unit
Currently unavailable
Schurter Non-Resettable Fuse 4A, 63V dc
  • RS Stock No. 665-7400P
  • Mfr. Part No. 3413.0222.22
Subtotal 10 units (supplied on a continuous strip)
Kr. 37,07(exc. VAT)
Kr. 3,707/unit
Stocked by manufacturer
Schneider Electric ComPact Cover Frame for use with Compact NS630b
  • RS Stock No. 654-976
  • Mfr. Part No. C080N3WM
Subtotal (1 unit)
Kr. 28 504,70(exc. VAT)
Kr. 28 504,70/unit
Temporarily out of stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 703-8232P
  • Mfr. Part No. PV-10A10F
Subtotal 1 unit (supplied in a box)
Kr. 171,01(exc. VAT)
Kr. 171,01/unit
In Stock
Bourns Surface Mount Fuse 2.5A, 65V dc
  • RS Stock No. 245-9256P
  • Mfr. Part No. SF-1206SA250M-2
Subtotal 10 units (supplied on a continuous strip)
Kr. 78,71(exc. VAT)
Kr. 7,871/unit
Last RS stock
Wurth Elektronik 10A Fuse Holder for 5 x 20 mm, 250V
  • RS Stock No. 283-6465
  • Mfr. Part No. 696309000000
Subtotal (1 unit)
Kr. 24,26(exc. VAT)
Kr. 24,26/unit
Stocked by manufacturer
Eaton Residual Current Circuit Breaker with Overload Protection, 10A Current Rating, 2-Pole, 10 mA Trip Sensitivity,
  • RS Stock No. 121-043
  • Mfr. Part No. 168298 FRBDM-C10/2/001-G/A
Subtotal (1 unit)
Kr. 1 848,70(exc. VAT)
Kr. 1 848,70/unit
In Stock
Schurter Non-Resettable Fuse 6.3A, 63V dc
  • RS Stock No. 665-7407P
  • Mfr. Part No. 3413.0224.22.
Subtotal 10 units (supplied on a continuous strip)
Kr. 79,39(exc. VAT)
Kr. 7,939/unit
Stocked by manufacturer
RS Better World
Siemens SENTRON 5SV3xxx Series Residual Current Circuit Breaker, 63A, 4-Pole, 500 mA, Type B, 800 A 400V ac
  • RS Stock No. 241-4449
  • Mfr. Part No. 5SV3746-4
Subtotal (1 unit)
Kr. 14 443,00(exc. VAT)
Kr. 14 443,00/unit
Temporarily out of stock
ABB Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 1-Pole, 30 mA Trip Sensitivity, Type
  • RS Stock No. 136-7778
  • Mfr. Part No. 2CSR275151R1165 DSE201 M B16 A30 - N Blue
Subtotal (1 unit)
Kr. 1 127,71(exc. VAT)
Kr. 1 127,71/unit
Stocked by manufacturer
TE Connectivity JWD Reed Relay -, 500mA Current Rating 1-Pole, Through Hole
  • RS Stock No. 508-424
  • Mfr. Part No. 1-1393771-2
Subtotal (1 pack of 12 units)
Kr. 3 006,89(exc. VAT)
Kr. 3 006,89/pack
Stocked by manufacturer
Eaton Eaton Moeller Series Residual Current Circuit Breaker, 25A, 3-Pole, 30 mA, Type C, 4.5 kA 230
  • RS Stock No. 282-7013
  • Mfr. Part No. 120678 mRB4-25/3N/C/003-A
Subtotal (1 unit)
Kr. 5 315,02(exc. VAT)
Kr. 5 315,02/unit
In Stock
ABB 100A Tag Fuse 79 x 21 x 53 mm 500V
  • RS Stock No. 251-3436
  • Mfr. Part No. 1SCA022627R1550
Subtotal (1 box of 9 units)
Kr. 935,91(exc. VAT)
Kr. 935,91/box
Currently unavailable
Eaton 2A F Ceramic Cartridge Fuse, 6.3 x 25.4 mm
  • RS Stock No. 852-7547
  • Mfr. Part No. TDC600-2A
Subtotal (1 unit)
Kr. 241,84(exc. VAT)
Kr. 241,84/unit
In Stock
ETA 106 Thermal Circuit Breaker -, 1A Current Rating 1-Pole, Panel Mount
  • RS Stock No. 728-8636
  • Mfr. Part No. 106-P10-000040-1A
Subtotal (1 unit)
Kr. 174,35(exc. VAT)
Kr. 174,35/unit
In Stock
Legrand 20A F Ceramic Cartridge Fuse, 8.5 x 32 mm
  • RS Stock No. 293-8222
  • Mfr. Part No. 0 123 20
Subtotal (1 pack of 10 units)
Kr. 196,31(exc. VAT)
Kr. 19,631/unit
Temporarily out of stock
Littelfuse 250 mA Resettable Fuse, 16V dc
  • RS Stock No. 787-4209P
  • Mfr. Part No. 1206L025YR
Subtotal 10 units (supplied on a continuous strip)
Kr. 46,68(exc. VAT)
Kr. 4,668/unit
In Stock
Wickmann Non-Resettable Fuse, Radial 3.15A, 125V ac
  • RS Stock No. 226-0670P
  • Mfr. Part No. 3961315000
Subtotal 10 units (supplied as a tape)
Kr. 165,92(exc. VAT)
Kr. 16,592/unit
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