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

49110 Products showing for Fuses & Circuit Breakers

101 of 999+
In Stock
Eaton 100A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P, 690V ac
  • RS Stock No. 703-8572
  • Mfr. Part No. CH223B
Each
SGD164.48(exc. GST)
In Stock
Eaton 1A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 854-8878
  • Mfr. Part No. FNQ-R-1
Each
SGD102.08(exc. GST)
Temporarily out of stock
Phoenix Contact CAPAROC Busbar Connector, 24V dc
  • RS Stock No. 269-7938
  • Mfr. Part No. 1110991
Each (In a Pack of 12)
SGD15.244(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 25A Current Rating
  • RS Stock No. 406-9491
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-25A
Each
SGD43.86(exc. GST)
Temporarily out of stock
Wickmann Inline Fuse Holder
  • RS Stock No. 174-0275
  • Mfr. Part No. 01550120ZXU
Each (In a Box of 100)
SGD0.852(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 63A Curve C, 400V AC, 12 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9309
  • Mfr. Part No. A9F87463
Each
SGD1,041.56(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 2P, 125A Curve B
  • RS Stock No. 219-8284
  • Mfr. Part No. A9N18415
Each
SGD588.91(exc. GST)
In Stock
RS PRO 6.3 A PCB Mount Fuse Holder, 1P for 5 x 20 mm, 250 V
  • RS Stock No. 277-3911
Each (In a Pack of 5)
SGD4.416(exc. GST)
In Stock
Schneider Electric Acti 9 Bell Transformer for use with Canalis
  • RS Stock No. 247-1920
  • Mfr. Part No. A9A15216
Each
SGD129.46(exc. GST)
Temporarily out of stock
Eaton MCB, 1P, 2A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 248-578
  • Mfr. Part No. 101252 PLI-C2/1
Each
SGD123.35(exc. GST)
Temporarily out of stock
Eaton 25A NH Fuse, NH000, 690V ac
  • RS Stock No. 181-8456
  • Mfr. Part No. 25NHM000B-690
1 Box of 3
SGD36.62(exc. GST)
Temporarily out of stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 232-0270
  • Mfr. Part No. 1SDA068092R1 XT4N 250 TMA 250A FF
Each
SGD1,476.12(exc. GST)
In Stock
Schneider Electric Shunt Trip Circuit Trip for use with ComPact NS630b → 1600, ComPact NS1600b → 3200,
  • RS Stock No. 247-1857
  • Mfr. Part No. 33671
Each
SGD414.68(exc. GST)
In Stock
Penta Fiberglass Earth Set Max. Conductor Size Cable CC 70mm² / terre 35mm² 317.5mm
  • RS Stock No. 248-9889
  • Mfr. Part No. KPIMT49S
Each
SGD1,922.26(exc. GST)
In Stock
Better World
Schneider Electric RCD, 6A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8640
  • Mfr. Part No. EZ9D16806
Each
SGD50.14(exc. GST)
In Stock
Eaton 2A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4147
  • Mfr. Part No. LP-CC-2
Each
SGD110.67(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6292
  • Mfr. Part No. C10H3
Each
SGD654.04(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 Distribution Board, 13 Way, 250 A
  • RS Stock No. 806-7402
  • Mfr. Part No. SEA9BN12PEV
Each
SGD550.67(exc. GST)
In Stock
Better World
Schneider Electric ComPact NSX, Easy Pact CVS Terminal Extention for use with ComPact NSX, Easy Pact CVS circuit
  • RS Stock No. 219-9351
  • Mfr. Part No. LV429263
Each
SGD85.60(exc. GST)
In Stock
Lovato ModuLo P1MB MCB, 4P, 32A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 825-6006
  • Mfr. Part No. P1MB4PD32
Each
SGD193.95(exc. GST)
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