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

46437 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
RS PRO FT Fuse Kit
  • RS Stock No. 893-8537
Subtotal (1 unit)
HK$744.30
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
In Stock
ABB System Pro M Compact S200M Miniature Circuit Breaker, 1-Pole, 25 A, Type D, 230 V ac AC, 72 V dc DC, 10 kA Breaking
  • RS Stock No. 746-8147
  • Mfr. Part No. 2CDS271001R0251 S201M-D25
Subtotal (1 unit)
HK$262.60
In Stock
SIBA
  • RS Stock No. 783-3251
  • Mfr. Part No. 70-007-33/5A
Subtotal (1 pack of 10 units)
HK$45.20
In Stock
RS PRO
  • RS Stock No. 610-9901
Subtotal (1 pack of 10 units)
HK$45.70
In Stock
Eaton 3A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 412-295
  • Mfr. Part No. TDC10-3A
Subtotal (1 pack of 10 units)
HK$44.60
In Stock
ETI 20A D2 Diazed Fuse, E27 Thread Size, 500V ac
  • RS Stock No. 413-670
  • Mfr. Part No. 2312406
Subtotal (1 pack of 5 units)
HK$47.90
In Stock
Eaton 32 A Rail Mount Fuse Holder, 1P-Pole, 550 V ac
  • RS Stock No. 418-495
  • Mfr. Part No. 32NNSF
Subtotal (1 unit)
HK$118.50
In Stock
Eaton 63 A British Standard Fuse F2 550 V ac
  • RS Stock No. 122-9606
  • Mfr. Part No. ESD63
Subtotal (1 pack of 5 units)
HK$333.20
In Stock
Eaton 7A F Ceramic Cartridge Fuse, 6.3 x 25 mm
  • RS Stock No. 412-582
  • Mfr. Part No. TDC180-7A
Subtotal (1 pack of 10 units)
HK$57.70
In Stock
Littelfuse 1A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-4375
  • Mfr. Part No. 0217001.MXP
Subtotal (1 pack of 10 units)
HK$29.40
In Stock
Littelfuse 1.6 A Resettable Fuse, 60 V
  • RS Stock No. 712-7492
  • Mfr. Part No. RKEF160
Subtotal (1 pack of 10 units)
HK$36.00
In Stock
Littelfuse
  • RS Stock No. 769-0079
  • Mfr. Part No. 0314010.HXP
Subtotal (1 pack of 10 units)
HK$78.20
In Stock
Bourns
  • RS Stock No. 691-7591
  • Mfr. Part No. MF-SMDF150-2
Subtotal (1 pack of 5 units)
HK$22.80
In Stock
RS PRO 10 A British Standard Fuse F1 550 V ac
  • RS Stock No. 521-2911
Subtotal (1 pack of 5 units)
HK$209.80
In Stock
Selco Thermal Fuse 128 °C, 10 A, 250 V ac
  • RS Stock No. 111-7805
  • Mfr. Part No. SWTC-262-3535
Subtotal (1 pack of 10 units)
HK$142.70
Temporarily out of 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
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 50 A, Type D, 240 V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3492
  • Mfr. Part No. A9F55150
Subtotal (1 unit)
HK$274.20
In Stock
Schurter, 6.3 x 32 mm
  • RS Stock No. 269-3871
  • Mfr. Part No. 8020.5065
Subtotal (1 unit)
HK$9.60
In Stock
RS PRO 2 A British Standard Fuse F1 550 V ac
  • RS Stock No. 521-2882
Subtotal (1 pack of 5 units)
HK$152.50
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