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

52966 Products showing for Fuses & Circuit Breakers

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In Stock
RS PRO RSK2 Series Residual Current Circuit Breaker, 25A, 2-Pole, 300 mA, Type AC, 500 A 230V
  • RS Stock No. 755-717
Subtotal (1 unit)
€25.43(exc. VAT)
€25.43/unit
In Stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 50A Current Rating, 1-Pole, Type AB, Easy9
  • RS Stock No. 850-8666
  • Mfr. Part No. EZ9D16850
Subtotal (1 unit)
€37.27(exc. VAT)
€37.27/unit
Stocked by manufacturer
Schneider Electric Acti9 Acti9 iDT40 Miniature Circuit Breaker, 3-Pole, 25A, Type D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 238-3400
  • Mfr. Part No. A9P34325
Subtotal (1 unit)
€145.81(exc. VAT)
€145.81/unit
In Stock
ETA 1658 Thermal Circuit Breaker -, 10A Current Rating 1-Pole, Panel
  • RS Stock No. 273-0860
  • Mfr. Part No. 1658-G21-02-P10-10A
Subtotal (1 unit)
€6.23(exc. VAT)
€6.23/unit
In Stock
RS PRO Miniature Circuit Breaker, 1-Pole, 10A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0188
Subtotal (1 unit)
€10.18(exc. VAT)
€10.18/unit
In Stock
ABB Tmax XT Shunt Opening Release for use with Tmax XT
  • RS Stock No. 237-6049
  • Mfr. Part No. 1SDA066321R1 SOR-C XT1..XT4 F/P 12VDC
Subtotal (1 unit)
€110.70(exc. VAT)
€110.70/unit
In Stock
RS PRO Miniature Circuit Breaker, 1-Pole, 20A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0199
Subtotal (1 unit)
€11.23(exc. VAT)
€11.23/unit
In Stock
Eaton xEffect FAZ Miniature Circuit Breaker, 1-Pole, 16A, Type B, 240V ac AC, 48 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6970
  • Mfr. Part No. 278535 FAZ-B16/1
Subtotal (1 unit)
€29.02(exc. VAT)
€29.02/unit
In Stock
Eaton Lockable xComfort IKA Eaton xComfort IKA professional Distribution Board, ABS Plastic, 8 Way
  • RS Stock No. 282-7020
  • Mfr. Part No. 174196 IKA-1/8-ST
Subtotal (1 unit)
€61.86(exc. VAT)
€61.86/unit
In Stock
Eaton 1.6kA Centred Tag Fuse NH3 690V ac
  • RS Stock No. 182-1373
  • Mfr. Part No. 170M8557D
Subtotal (1 unit)
€275.68(exc. VAT)
€275.68/unit
In Stock
Siemens SENTRON Earthing Rod for use with Busbar System
  • RS Stock No. 231-3577
  • Mfr. Part No. 8WC5055
Subtotal (1 unit)
€204.32(exc. VAT)
€204.32/unit
In Stock
Mersen 63A NH Fuse NH000 500V ac
  • RS Stock No. 375-9597
  • Mfr. Part No. E213996C / NH000GG50V63/3
Subtotal (1 pack of 3 units)
€26.259(exc. VAT)
€8.753/unit
Temporarily out of stock
RS PRO Miniature Circuit Breaker, 1-Pole, 2A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0198
Subtotal (1 unit)
€10.38(exc. VAT)
€10.38/unit
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 3-Pole, 4A, Type D, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 772-1353
  • Mfr. Part No. 5SY4304-8
Subtotal (1 unit)
€114.82(exc. VAT)
€114.82/unit
In Stock
ETA Thermal Overcurrent Circuit Breakers 1658 Thermal Circuit Breaker -, 16A Current Rating 1-Pole, Panel
  • RS Stock No. 344-5333
  • Mfr. Part No. 1658-G21-02-P10-16A
Subtotal (1 unit)
€6.23(exc. VAT)
€6.23/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 16A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Subtotal (1 unit)
€31.44(exc. VAT)
€31.44/unit
In Stock
Siemens Copper SENTRON 5ST 3 Phase Busbar, 27 mm Pitch
  • RS Stock No. 202-7199
  • Mfr. Part No. 5ST3712
Subtotal (1 unit)
€169.84(exc. VAT)
€169.84/unit
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 32A Current Rating, 2-Pole, 30 mA Trip Sensitivity, Type
  • RS Stock No. 201-6955
  • Mfr. Part No. 2CSR255080R1324 DS201 C32 AC30
Subtotal (1 unit)
€161.74(exc. VAT)
€161.74/unit
In Stock
RS PRO Rail Mount Fuse Holder for 5 x 25 mm, 24V
  • RS Stock No. 501-871
Subtotal (1 unit)
€12.48(exc. VAT)
€12.48/unit
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)
€22.40(exc. VAT)
€22.40/pack
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