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

8 of 999+
In Stock
Wickmann 60A Bolt Down Car Fuse, 32V dc
  • RS Stock No. 174-0663
  • Mfr. Part No. 0298060.ZXB
1 Pack of 1
SGD14.18(exc. GST)
In Stock
Legrand 4115 RCD, 40A, 1+N Pole, 30mA, Type A
  • RS Stock No. 863-7773
  • Mfr. Part No. 4 115 55
Each
SGD131.71(exc. GST)
Currently unavailable
Omron Busbar
  • RS Stock No. 111-3075
  • Mfr. Part No. PYDN-6.2-040S
Each
SGD3.07(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 10A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7567
  • Mfr. Part No. 2CDS252001R0105 S202-B10
Each
SGD69.94(exc. GST)
In Stock
Eaton 63mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-8667
  • Mfr. Part No. S506-63-R
Each (In a Pack of 10)
SGD0.80(exc. GST)
In Stock
ABB MCB, MCB Blank
  • RS Stock No. 136-7812
  • Mfr. Part No. 1TVC151800S2550
Each
SGD2.47(exc. GST)
In Stock
Eaton NH Fuse Puller, Sizes 00 → 3
  • RS Stock No. 182-1518
  • Mfr. Part No. FEH
Each
SGD235.06(exc. GST)
Limited stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8537
Each
SGD155.68(exc. GST)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6154
  • Mfr. Part No. 1SDA066901R1 ES XT4 3PCS
Each
SGD75.92(exc. GST)
In Stock
Eaton Fuse Puller, Sizes 13/32 → 13/16in
  • RS Stock No. 849-5964
  • Mfr. Part No. FP-2
Each
SGD97.70(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7845
  • Mfr. Part No. C2545E250
Each
SGD2,653.01(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 32A Curve B, 253V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 225-5991
  • Mfr. Part No. 2CDS251001R0325 S201 B 32A - 10 KA
Each
SGD30.27(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 1A, 50V ac/dc
  • RS Stock No. 820-7158P
  • Mfr. Part No. 0440001.WR
Each (Supplied on a Reel)
SGD0.906(exc. GST)
In Stock
Eaton 50A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 181-8935
  • Mfr. Part No. C14M50
Each
SGD4.42(exc. GST)
In Stock
Weidmüller 30A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 286-0192
  • Mfr. Part No. 2828000000
1 Box of 5
SGD48.58(exc. GST)
In Stock
Mersen 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-6956
  • Mfr. Part No. D213098
Each (In a Pack of 10)
SGD2.958(exc. GST)
In Stock
Eaton 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1004
  • Mfr. Part No. S506-10-R
Each (In a Pack of 10)
SGD1.288(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-422
  • Mfr. Part No. KV 3554
Each
SGD419.80(exc. GST)
In Stock
Littelfuse PCB Mount Fuse Holder for ATO Fuse, 80V dc
  • RS Stock No. 787-4353
  • Mfr. Part No. 178.6164.0001
Each
SGD4.09(exc. GST)
Temporarily out of stock
TE Connectivity Thermal Circuit Breaker - W31 Single Pole 50 V dc, 240V ac Voltage Rating, 7.5A Current Rating
  • RS Stock No. 782-8108
  • Mfr. Part No. W31-X2M1G-7.50
Each
SGD84.83(exc. GST)
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