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

47545 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
RS PRO Non-Resettable Fuse 1A, 250V ac
  • RS Stock No. 139-966
Subtotal (1 bag of 10 units)
HK$39.80
HK$39.80/bag
In Stock
Eaton 16A gG/gL Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
Subtotal (1 pack of 10 units)
HK$109.00
HK$109.00/pack
In Stock
Eaton 160mA T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1622
  • Mfr. Part No. S506-160-R
Subtotal (1 pack of 10 units)
HK$46.60
HK$4.66/unit
In Stock
Bourns 1.5 A Resettable Fuse, 15V
  • RS Stock No. 647-8112
  • Mfr. Part No. MF-SM150-2
Subtotal (1 pack of 10 units)
HK$31.40
HK$3.14/unit
Temporarily out of stock
Rittal Copper SZ SZ Busbar
  • RS Stock No. 230-4854
  • Mfr. Part No. 2364000
Subtotal (1 unit)
HK$1,029.90
HK$1,029.90/unit
In Stock
Eaton 32A Rail Mount Fuse Holder, 1P-Pole, 550V ac
  • RS Stock No. 418-495
  • Mfr. Part No. 32NNSF
Subtotal (1 unit)
HK$122.10
HK$122.10/unit
In Stock
Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 2-Pole, 2A, Type C, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7699
  • Mfr. Part No. 2CDS252001R0024 S202-C2
Subtotal (1 unit)
HK$542.20
HK$542.20/unit
In Stock
Bourns Non-Resettable Fuse 375mA, 125V ac
  • RS Stock No. 191-4605
  • Mfr. Part No. SF-2410FP0375T-2
Subtotal (1 tape of 10 units)
HK$120.10
HK$12.01/unit
In Stock
Schurter 6.3 A In-line Fuse Holder for 6.3 x 32 mm, 32 V dc, 32 V ac
  • RS Stock No. 173-7933
  • Mfr. Part No. 8601.2001.08
Subtotal (1 box of 50 units)
HK$648.40
HK$12.968/unit
In Stock
Eaton 20A Rail Mount Fuse Holder for A2, 1P-Pole, 690V ac
  • RS Stock No. 221-594
  • Mfr. Part No. RS20P/G/BLK
Subtotal (1 unit)
HK$298.30
HK$298.30/unit
In Stock
Better World
ABB ComPact Home SH200 Miniature Circuit Breaker, 2-Pole, 6A, Type C, 440V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9655
  • Mfr. Part No. 2CDS212001R0064 SH202-C 6
Subtotal (1 box of 1 unit)
HK$384.30
HK$384.30/box
In Stock
Phoenix Contact Mounting Base for use with PT Series
  • RS Stock No. 768-1195
  • Mfr. Part No. 2839363
Subtotal (1 unit)
HK$909.80
HK$909.80/unit
In Stock
Eaton 40A Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 181-8582
  • Mfr. Part No. C14M40
Subtotal (1 box of 10 units)
HK$181.50
HK$18.15/unit
In Stock
Eaton 20A British Standard Fuse A1 550V ac, 42.5 mm
  • RS Stock No. 139-883
  • Mfr. Part No. NITD20M25
Subtotal (1 pack of 5 units)
HK$157.00
HK$31.40/unit
In Stock
Hager 32A GG Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 250-8615
  • Mfr. Part No. LF332G
Subtotal (1 pack of 10 units)
HK$428.50
HK$42.85/unit
Last RS stock
Wickmann Non-Resettable Fuse 10 A
  • RS Stock No. 174-0752
  • Mfr. Part No. 0458010.DR
Subtotal (1 pack of 5 units)
HK$76.30
HK$15.26/unit
In Stock
ETA ESS20 ESS20 Distribution Board 6A
  • RS Stock No. 631-9136
  • Mfr. Part No. 17PLUS-Q02-00
Subtotal (1 unit)
HK$270.20
HK$270.20/unit
In Stock
Eaton 160A Bolted Tag Fuse A4 660 V ac, 350V dc, 94 mm
  • RS Stock No. 182-1477
  • Mfr. Part No. TFP160
Subtotal (1 box of 10 units)
HK$19,554.50
HK$1,955.45/unit
In Stock
RS PRO 10A Red Car Fuse, 32V dc
  • RS Stock No. 563-485
Subtotal (1 pack of 10 units)
HK$82.40
HK$8.24/unit
In Stock
Wickmann 30A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 174-0635
  • Mfr. Part No. 0505030.MXP
Subtotal (1 pack of 5 units)
HK$212.00
HK$42.40/unit
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