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

50773 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
Eaton 63A British Standard Fuse A3 550V ac, 73.5 mm
  • RS Stock No. 413-383
  • Mfr. Part No. BAO63
Subtotal (1 unit)
HK$115.00
HK$115.00/unit
In Stock
Siemens 315A NH Fuse NH2 500V ac
  • RS Stock No. 395-563
  • Mfr. Part No. 3NA3252
Subtotal (1 pack of 3 units)
HK$403.50
HK$134.50/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
ABB SMISSLINE TP S403M-B50NP Miniature Circuit Breaker, 4-Pole, 50A, Type B, 400V ac AC, 50 kA Breaking Capacity
  • RS Stock No. 246-2689
  • Mfr. Part No. 2CCS573103R8505
Subtotal (1 unit)
HK$2,187.70
HK$2,187.70/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
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
HK$2,335.60/pack
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
Schneider Electric Acti9 iC60 Series Residual Current Device, 25A, 2-Pole, 30 mA, Type AC 240V ac
  • RS Stock No. 734-9071
  • Mfr. Part No. A9Q11225
Subtotal (1 unit)
HK$2,090.50
HK$2,090.50/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
Eaton 1A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1458
  • Mfr. Part No. S505-1-R
Subtotal (1 pack of 10 units)
HK$24.30
HK$2.43/unit
In Stock
Schneider Electric Acti9 Acti9 iC60 Miniature Circuit Breaker, 1-Pole, 2A, Type C, 240V ac AC, 72 V dc DC, 10 kA
  • RS Stock No. 776-3436
  • Mfr. Part No. A9F74102
Subtotal (1 unit)
HK$562.10
HK$562.10/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
RS PRO 5A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-693
Subtotal (1 pack of 10 units)
HK$48.60
HK$4.86/unit
In 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$445.80
HK$44.58/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
RS 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
RS PRO 32A 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 7.5A Brown Car Fuse, 32V dc
  • RS Stock No. 563-772
Subtotal (1 pack of 10 units)
HK$50.80
HK$5.08/unit
In Stock
Eaton 63A Rail Mount Fuse Holder for A2, 1P-Pole, 690V ac
  • RS Stock No. 415-086
  • Mfr. Part No. RS63HWH
Subtotal (1 unit)
HK$330.40
HK$330.40/unit
In Stock
Schneider Electric Acti9 IC60N Miniature Circuit Breaker, 1-Pole, 4A, Type C, 240V ac AC, 72 V dc DC, 10 kA Breaking
  • RS Stock No. 776-3449
  • Mfr. Part No. A9F74104
Subtotal (1 unit)
HK$491.70
HK$491.70/unit
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