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

52060 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
ETA 106 Thermal Circuit Breaker - 1-Pole, Base, 1A Current Rating, 25 A, 240V ac, 48 V dc
  • RS Stock No. 728-8636
  • Mfr. Part No. 106-P10-000040-1A
Subtotal (1 unit)
€16.62(exc. VAT)
€16.62/unit
In Stock
RS PRO 4A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 610-9715
Subtotal (1 pack of 10 units)
€4.10(exc. VAT)
€0.41/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0177
Subtotal (1 unit)
€20.24(exc. VAT)
€20.24/unit
In Stock
Littelfuse Non-Resettable Fuse 62mA, 125V ac
  • RS Stock No. 738-2841
  • Mfr. Part No. 0451.062MRL
Subtotal (1 pack of 10 units)
€46.04(exc. VAT)
€4.604/unit
In Stock
Littelfuse 0.5 A Resettable Fuse, 13.2V dc
  • RS Stock No. 138-679
  • Mfr. Part No. NANOSMDC050F/13.2-2
Subtotal (1 pack of 10 units)
€4.05(exc. VAT)
€0.405/unit
In Stock
Schneider Electric Acti9 iIDK Series Residual Current Circuit Breaker, 40A, 2-Pole, 30 mA, Type AC, 500 A 240V ac
  • RS Stock No. 238-3455
  • Mfr. Part No. A9R55240
Subtotal (1 unit)
€97.68(exc. VAT)
€97.68/unit
Limited stock
Eaton 13A F Ceramic Cartridge Fuse, 6.3 x 25 mm
  • RS Stock No. 412-605
  • Mfr. Part No. TDC180-13A
Subtotal (1 pack of 10 units)
€6.36(exc. VAT)
€0.636/unit
In Stock
RS Better World
ABB System Pro M Compact S200M Miniature Circuit Breaker, 4-Pole, 40A, Type C, 400V ac AC, 125 V dc DC, 15 kA Breaking
  • RS Stock No. 231-9776
  • Mfr. Part No. 2CDS274001R0404 S204M C 40A - 15 KA
Subtotal (1 box of 1 unit)
€168.18(exc. VAT)
€168.18/box
In Stock
RS PRO, RS, RS13N Circuit Breaker 4-Pole 63A, Breaking Capacity 36 kA
  • RS Stock No. 683-392
Subtotal (1 unit)
€87.00(exc. VAT)
€87.00/unit
In Stock
Littelfuse Non-Resettable Fuse, Radial 4 A, 250 V ac
  • RS Stock No. 226-0614
  • Mfr. Part No. 37214000001
Subtotal (1 pack of 10 units)
€7.11(exc. VAT)
€0.711/unit
In Stock
Eaton NZM Door Coupling Handle for use with N1, NZM1
  • RS Stock No. 257-005
  • Mfr. Part No. 271445 NZM1-XTVD-NA
Subtotal (1 unit)
€106.13(exc. VAT)
€106.13/unit
In Stock
RS PRO DHMZ 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
Being discontinued
RS PRO 8A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-429
Subtotal (1 pack of 10 units)
€2.80(exc. VAT)
€0.28/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 3-Pole, 25A, Type D, 440V ac AC, 12 V dc DC, 6 kA Breaking
  • RS Stock No. 527-9627
  • Mfr. Part No. 2CDS253001R0251 S203-D25
Subtotal (1 unit)
€77.77(exc. VAT)
€77.77/unit
In Stock
RS PRO 20A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 247-3983
Subtotal (1 pack of 10 units)
€16.15(exc. VAT)
€1.615/unit
In Stock
Schneider Electric Busbar Tap-Off Unit with Circuit Breaker, Canalis Series
  • RS Stock No. 211-0513
  • Mfr. Part No. KSB63SM48
Subtotal (1 unit)
€124.23(exc. VAT)
€124.23/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 3-Pole, 32A, Type D, 440V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9633
  • Mfr. Part No. 2CDS253001R0321 S203-D32
Subtotal (1 unit)
€77.83(exc. VAT)
€77.83/unit
In Stock
RS PRO 3A Violet Car Fuse, 32V dc
  • RS Stock No. 563-740
Subtotal (1 pack of 10 units)
€7.50(exc. VAT)
€0.75/unit
In Stock
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)
€124.88(exc. VAT)
€124.88/unit
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 2-Pole, Type AC, RCBO DSH201 Range,
  • RS Stock No. 231-9948
  • Mfr. Part No. 2CSR255170R1164 DSH201 C16 A30
Subtotal (1 box of 1 unit)
€85.47(exc. VAT)
€85.47/box
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