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

50415 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 3-Pole, 10A, Type B, 14 kA Breaking Capacity
  • RS Stock No. 219-9113
  • Mfr. Part No. M9F21310
Subtotal (1 unit)
HK$2,346.90
HK$2,346.90/unit
In Stock
Eaton 12A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 852-7049
  • Mfr. Part No. MDA-12-R
Subtotal (1 unit)
HK$58.00
HK$58.00/unit
In Stock
RS PRO 63A British Standard Fuse A3 550V ac, 73.5 mm
  • RS Stock No. 521-2652
Subtotal (1 pack of 5 units)
HK$426.50
HK$85.30/unit
In Stock
ABB RCBO, 16A Current Rating, 2-Pole, 30 mA Trip Sensitivity, Type A, DS301C Range, 2CSR255163R Range
  • RS Stock No. 707-312
  • Mfr. Part No. 2CSR255163R1165
Subtotal (1 unit)
HK$1,161.75
HK$1,161.75/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 4-Pole, 32A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 790-8737
  • Mfr. Part No. A9F55432
Subtotal (1 unit)
HK$2,149.16
HK$2,149.16/unit
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
Legrand DX DX3 Miniature Circuit Breaker, 3-Pole, 16A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9727
  • Mfr. Part No. 4 078 29
Subtotal (1 unit)
HK$1,625.60
HK$1,625.60/unit
In Stock
SIBA 2.5A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3318
  • Mfr. Part No. 70-007-65/2.5A
Subtotal (1 pack of 10 units)
HK$55.70
HK$5.57/unit
In Stock
Eaton Fuse Holder Accessory Red Spot Pad lockable Insert
  • RS Stock No. 262-566
  • Mfr. Part No. RS20LOCK
Subtotal (1 pack of 10 units)
HK$2,335.60
HK$2,335.60/pack
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 4-Pole, 63A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 790-8743
  • Mfr. Part No. A9F55463
Subtotal (1 unit)
HK$1,759.50
HK$1,759.50/unit
In Stock
RS PRO FT Fuse Kit
  • RS Stock No. 893-8543
Subtotal (1 unit)
HK$1,393.70
HK$1,393.70/unit
In Stock
Schurter Non-Resettable Fuse, Radial 250mA, 250V ac
  • RS Stock No. 284-5271
  • Mfr. Part No. 0034.6609
Subtotal (1 pack of 10 units)
HK$35.70
HK$3.57/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$219.60
HK$43.92/unit
Temporarily out of stock
Schurter 15A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 703-2669P
  • Mfr. Part No. 8020.0604.G
Subtotal 10 units (supplied in a box)
HK$82.10
HK$8.21/unit
Limited 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
Legrand 8A Ceramic Cartridge Fuse, 8 x 32 mm
  • RS Stock No. 266-3090
  • Mfr. Part No. 0 124 08
Subtotal (1 box of 10 units)
HK$385.90
HK$385.90/box
In Stock
Phoenix Contact Surge Protection Device, DIN Rail
  • RS Stock No. 135-7135
  • Mfr. Part No. 2908729
Subtotal (1 unit)
HK$14.60
HK$14.60/unit
In Stock
RS PRO 63A Rail Mount Fuse Holder for F2, 415V ac
  • RS Stock No. 216-5351
Subtotal (1 unit)
HK$175.70
HK$175.70/unit
Limited stock
RS PRO 6A British Standard Fuse F1 550V ac
  • RS Stock No. 521-2905
Subtotal (1 pack of 5 units)
HK$205.30
HK$41.06/unit
In Stock
SIBA 2A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3309
  • Mfr. Part No. 70-007-65/2A
Subtotal (1 pack of 10 units)
HK$56.50
HK$5.65/unit
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