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

50291 Products showing for Fuses & Circuit Breakers

1 of 999+
Temporarily out of stock
Hager 16A GG Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 250-8606
  • Mfr. Part No. LF316G
Subtotal (1 pack of 10 units)
HK$428.50
HK$42.85/unit
In Stock
ETA 1110 Thermal Circuit Breaker - 1-Pole, Base, 16A Current Rating, 25 A, 250V ac, 50 V dc
  • RS Stock No. 417-026
  • Mfr. Part No. 1110-F112-P1M1-16A
Subtotal (1 unit)
HK$219.00
HK$219.00/unit
In Stock
Eaton 80A British Standard Fuse B1 500V, 111 mm
  • RS Stock No. 181-8653
  • Mfr. Part No. CD80
Subtotal (1 unit)
HK$139.10
HK$139.10/unit
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 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
RS PRO 32 A Solid Link for F1 Fuses
  • RS Stock No. 242-1128
Subtotal (1 pack of 5 units)
HK$146.20
HK$29.24/unit
In Stock
RS PRO 3.15A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 911-3414
Subtotal (1 pack of 10 units)
HK$28.80
HK$2.88/unit
Temporarily out of 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
RS 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
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
In Stock
SIBA 4A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3315
  • Mfr. Part No. 70-007-65/4A
Subtotal (1 pack of 10 units)
HK$73.00
HK$7.30/unit
Temporarily out of stock
Eaton 63A Rail Mount Fuse Holder, 1P-Pole, 660V ac
  • RS Stock No. 247-9492
  • Mfr. Part No. 63ENSF
Subtotal (1 unit)
HK$227.00
HK$227.00/unit
In Stock
RS PRO 3A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 668-6007
Subtotal (1 pack of 10 units)
HK$34.20
HK$3.42/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
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)
HK$1,293.00
HK$1,293.00/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 40A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3578
  • Mfr. Part No. A9F55340
Subtotal (1 unit)
HK$1,062.40
HK$1,062.40/unit
In Stock
Nidec Components 3 A Resettable Fuse, 30 V
  • RS Stock No. 637-6476
  • Mfr. Part No. PRCP-R300-0-99
Subtotal (1 pack of 5 units)
HK$35.90
HK$7.18/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
In Stock
Schneider Electric Busbar Trunking Blanking Plate, Canalis Series
  • RS Stock No. 219-8883
  • Mfr. Part No. KBC16ZB1
Subtotal (1 pack of 10 units)
HK$661.70
HK$66.17/unit
In Stock
Littelfuse 6.3A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-4577
  • Mfr. Part No. 021606.3HXP
Subtotal (1 pack of 10 units)
HK$103.00
HK$10.30/unit
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