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

50168 Products showing for Fuses & Circuit Breakers

7 of 999+
In Stock
RS PRO 1A T Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 177-8026
Subtotal (1 box of 500 units)
Kr. 3 700,50(exc. VAT)
Kr. 7,401/unit
Temporarily out of stock
Weidmüller 10A GPV Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 286-0183
  • Mfr. Part No. 2783230000
Subtotal (1 box of 5 units)
Kr. 404,40(exc. VAT)
Kr. 404,40/box
In Stock
RS PRO 10A Panel Mount Fuse Holder for 5 x 20 mm, 250V ac
  • RS Stock No. 188-4630
Subtotal (1 unit)
Kr. 52,00(exc. VAT)
Kr. 52,00/unit
Being discontinued
RS PRO 5A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-532
Subtotal (1 pack of 10 units)
Kr. 38,21(exc. VAT)
Kr. 3,821/unit
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 2-Pole, 4A, Type C, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 772-1280
  • Mfr. Part No. 5SY4204-7
Subtotal (1 unit)
Kr. 1 201,66(exc. VAT)
Kr. 1 201,66/unit
Stocked by manufacturer
ABB System Pro M Compact S300P Miniature Circuit Breaker, 4-Pole, 32A, Type K, 415V ac AC, 120 V dc DC, 25 kA Breaking
  • RS Stock No. 200-107
  • Mfr. Part No. 2CDS384001R0537
Subtotal (1 unit)
Kr. 2 450,23(exc. VAT)
Kr. 2 450,23/unit
In Stock
RS PRO 5A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 911-3506
Subtotal (1 pack of 10 units)
Kr. 49,39(exc. VAT)
Kr. 4,939/unit
In Stock
SIBA 400A Centred Tag Fuse NH2 500V ac
  • RS Stock No. 421-823
  • Mfr. Part No. 20-004-13/400A
Subtotal (1 unit)
Kr. 304,30(exc. VAT)
Kr. 304,30/unit
In Stock
SIBA 200A Centred Tag Fuse NH1 500V ac
  • RS Stock No. 421-788
  • Mfr. Part No. 20-003-13/200A
Subtotal (1 unit)
Kr. 307,28(exc. VAT)
Kr. 307,28/unit
In Stock
Eaton xPole PXL Miniature Circuit Breaker, 1-Pole, 40A, Type B, 400V ac AC, 48 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 487-000
  • Mfr. Part No. 236037 PXL-B40/1
Subtotal (1 unit)
Kr. 239,41(exc. VAT)
Kr. 239,41/unit
In Stock
Eaton 7A F Ceramic Cartridge Fuse, 6.3 x 25 mm
  • RS Stock No. 412-582
  • Mfr. Part No. TDC180-7A
Subtotal (1 pack of 10 units)
Kr. 26,46(exc. VAT)
Kr. 2,646/unit
In Stock
RS Better World
Schneider Electric Acti9 Acti9 iC60 Miniature Circuit Breaker, 4-Pole, 10A, Type C, 400V AC, 250 V DC, 20 kA Breaking
  • RS Stock No. 247-1951
  • Mfr. Part No. A9F94410
Subtotal (1 unit)
Kr. 3 604,97(exc. VAT)
Kr. 3 604,97/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 10A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0179
Subtotal (1 unit)
Kr. 89,46(exc. VAT)
Kr. 89,46/unit
In Stock
Siemens Copper Alpha 8GK Busbar
  • RS Stock No. 226-0832
  • Mfr. Part No. 8GK9733-0KK20
Subtotal (1 unit)
Kr. 382,44(exc. VAT)
Kr. 382,44/unit
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 10A, Type C, 440V ac AC, 133 V dc DC, 15 kA Breaking
  • RS Stock No. 776-2317
  • Mfr. Part No. A9F07210
Subtotal (1 unit)
Kr. 1 282,54(exc. VAT)
Kr. 1 282,54/unit
In Stock
Littelfuse Fuse Holder Accessory Blade Fuse Holder
  • RS Stock No. 738-2784
  • Mfr. Part No. FHAC0001ZXJ
Subtotal (1 unit)
Kr. 61,93(exc. VAT)
Kr. 61,93/unit
In Stock
Phoenix Contact Surge Protector, 250 V ac, DIN Rail
  • RS Stock No. 801-6343
  • Mfr. Part No. 2952790
Subtotal (1 unit)
Kr. 376,44(exc. VAT)
Kr. 376,44/unit
In Stock
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 16A, Type C, 253V ac AC, 72 V dc DC, 10
  • RS Stock No. 535-4150
  • Mfr. Part No. 2CDS271001R0164 S201M-C16
Subtotal (1 unit)
Kr. 476,27(exc. VAT)
Kr. 476,27/unit
In Stock
Eaton 2A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1341
  • Mfr. Part No. S506-2-R
Subtotal (1 pack of 10 units)
Kr. 13,17(exc. VAT)
Kr. 1,317/unit
In Stock
Littelfuse Non-Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 541-3338
  • Mfr. Part No. 0451.250MRL
Subtotal (1 pack of 10 units)
Kr. 285,54(exc. VAT)
Kr. 28,554/unit
1
7
2509
Results per page

Related links