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

48615 Products showing for Fuses & Circuit Breakers

9 / 999+
Stocked by manufacturer
Schneider Electric 48V ac Shunt Trip for use with ComPacT NSX100
  • RS Stock No. 654-993
  • Mfr. Part No. LV429385
Subtotal (1 unit)
MYR739.42
MYR739.42/unit
In Stock
Mersen 25A F Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 188-7375
  • Mfr. Part No. E219769 / FR14AM69V25
Subtotal (1 pack of 10 units)
MYR88.11
MYR8.811/unit
In Stock
Schurter 0.5A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 269-3871
  • Mfr. Part No. 8020.5065
Subtotal (1 unit)
MYR6.15
MYR6.15/unit
In Stock
Schurter 10A Panel Mount Fuse Holder, 1P-Pole for 6.3 x 32 mm, 250V ac
  • RS Stock No. 412-863
  • Mfr. Part No. 0031.1804
Subtotal (1 pack of 5 units)
MYR126.28
MYR25.256/unit
In Stock
ABB F200 Series Residual Current Circuit Breaker, 25A, 2-Pole, 30 mA, Type AC, 0.03 A 230V ac
  • RS Stock No. 537-7355
  • Mfr. Part No. 2CSF202001R1250 F202 AC-25/0,03
Subtotal (1 unit)
MYR939.60
MYR939.60/unit
In Stock
Better World
Schneider Electric Acti9 Acti9 iDT40K Miniature Circuit Breaker, 1-Pole, 10A, Type C, 230V ac AC, 4500 A Breaking
  • RS Stock No. 238-3411
  • Mfr. Part No. A9P71610
Subtotal (1 unit)
MYR175.46
MYR175.46/unit
In Stock
Mersen 250A NH Fuse NH2
  • RS Stock No. 270-3124
  • Mfr. Part No. V228500 / NH2GG69V250
Subtotal (1 unit)
MYR272.12
MYR272.12/unit
In Stock
Better World
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 25A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 238-3337
  • Mfr. Part No. A9DV3625
Subtotal (1 unit)
MYR1,481.44
MYR1,481.44/unit
In Stock
Phoenix Contact CBMC Electronic Circuit Breaker 10A 24V, DIN Rail Type E
  • RS Stock No. 207-2719
  • Mfr. Part No. 2906032
Subtotal (1 unit)
MYR654.22
MYR654.22/unit
In Stock
brennenstuhl BD 4 Phase Distribution Board 30mA 4 Way
  • RS Stock No. 270-2188
  • Mfr. Part No. 1154911
Subtotal (1 unit)
MYR1,121.62
MYR1,121.62/unit
Last RS stock
Contactum Miniature Circuit Breaker, 1-Pole, 32A, Type B, 250V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 184-9060
  • Mfr. Part No. CPB32
Subtotal (1 unit)
MYR19.40
MYR19.40/unit
In Stock
Eaton 6.3A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-8623
  • Mfr. Part No. S500-6.3-R
Subtotal (1 pack of 10 units)
MYR14.73
MYR1.473/unit
Temporarily out of stock
Schneider Electric Acti9 A9K Miniature Circuit Breaker, 1-Pole, 16A, Type B, 440V ac AC, 6000 A Breaking Capacity
  • RS Stock No. 140-027
  • Mfr. Part No. A9K01116
Subtotal (1 unit)
MYR18.51
MYR18.51/unit
In Stock
Littelfuse 8A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-4735
  • Mfr. Part No. 0215008.MXP
Subtotal (1 pack of 10 units)
MYR59.01
MYR5.901/unit
In Stock
Siemens 25A D2 Diazed Fuse, 500V ac/dc
  • RS Stock No. 163-282
  • Mfr. Part No. 5SB2811
Subtotal (1 pack of 25 units)
MYR162.63
MYR162.63/pack
In Stock
Phoenix Contact Copper CLIPLINE FBS Busbar, 6.2 mm Pitch
  • RS Stock No. 627-3406
  • Mfr. Part No. 3030271
Subtotal (1 pack of 5 units)
MYR121.60
MYR24.32/unit
Temporarily out of stock
Eaton 2A British Standard Fuse 14 x 55 mm 550V ac, 44.5 mm
  • RS Stock No. 413-260
  • Mfr. Part No. NITD2
Subtotal (1 pack of 5 units)
MYR117.34
MYR23.468/unit
In Stock
Eaton 100A Tag Fuse NH000 500V ac
  • RS Stock No. 703-8651
  • Mfr. Part No. 100NHG000B
Subtotal (1 unit)
MYR31.95
MYR31.95/unit
In Stock
SIBA 100A Centred Tag Fuse NH1 500V ac
  • RS Stock No. 421-750
  • Mfr. Part No. 20-003-13/100A
Subtotal (1 unit)
MYR83.05
MYR83.05/unit
In Stock
RS PRO 2A FF Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 420-094
Subtotal (1 pack of 10 units)
MYR60.15
MYR6.015/unit
1
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