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

35151 Products showing for Fuses & Circuit Breakers

234 of 999+
Legrand Circuit Breaker, 4P, 100A, 690V AC
  • RS Stock No. 266-0257
  • Mfr. Part No. 0 223 22
Each
$795.81(exc. GST)
Eaton NZM Jumper Link for use with N3-4-…-S1(-S15)-DC
  • RS Stock No. 121-184
  • Mfr. Part No. 170121 NZM3-4-XKVI2POU-K
Each
$949.10(exc. GST)
Siemens SENTRON 5SY4 MCB, 4P, 1.6A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-323
  • Mfr. Part No. 5SY4615-5
Each
$526.04(exc. GST)
Schurter Panel Mount Fuse Holder for 5 x 20mm Fuse, 2P
  • RS Stock No. 500-6211
  • Mfr. Part No. 4301.1401
Each
$11.01(exc. GST)
Mersen 2.5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 270-3036
  • Mfr. Part No. F095570
Each (In a Box of 10)
$1.987(exc. GST)
Legrand 125A M Ceramic Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 266-3166
  • Mfr. Part No. 0 151 97
1 Box of 10
$553.67(exc. GST)
Phoenix Contact 1 Phase Surge Arrester, DIN Rail Mount
  • RS Stock No. 129-567
  • Mfr. Part No. 2856582
Each
$193.51(exc. GST)
Bourns SMD Non Resettable Fuse 1A, 125V ac
  • RS Stock No. 191-4174
  • Mfr. Part No. SF-2410FP100T-2
Each (On a Reel of 1000)
$0.914(exc. GST)
Eaton 250A Fuse Holder for NH1 Fuse, 3P, 440 V ac/dc, 690 V ac/dc
  • RS Stock No. 127-386
  • Mfr. Part No. 183048 XNH1-FCE-A250-BT
Each
$1,471.36(exc. GST)
Siemens, SENTRON MCCB 4P 350A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-223
  • Mfr. Part No. 3VA5335-7GF41-2AA0
Each
$14,230.74(exc. GST)
Siemens SENTRON 5SY7 MCB, 2P, 300mA Curve D, 400V AC, 50 kA Breaking Capacity
  • RS Stock No. 610-648
  • Mfr. Part No. 5SY7214-8
Each
$311.48(exc. GST)
xComfort Distribution Board
  • RS Stock No. 262-798
  • Mfr. Part No. 302417 KLV-60HWS-SF
Each
$781.72(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9744
  • Mfr. Part No. 3VA1112-6FF46-0AA0
Each
$2,915.54(exc. GST)
200A T Ceramic Cartridge Fuse, 56 x 46mm
  • RS Stock No. 252-886
  • Mfr. Part No. 200D200
1 Pack of 10
$514.89(exc. GST)
Eaton 800mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1600
Each (In a Pack of 10)
$1.778(exc. GST)
Eaton 200mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1278
  • Mfr. Part No. S500-200-R
Each (In a Pack of 10)
$7.679(exc. GST)
Siemens SENTRON 5SY8 MCB, 2P, 50A Curve D, 400V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-463
  • Mfr. Part No. 5SY8250-8BB08
Each
$260.72(exc. GST)
Eaton 16A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8459
  • Mfr. Part No. C22G16
Each (In a Pack of 10)
$9.122(exc. GST)
TE Connectivity Thermal Circuit Breaker - W28 SP Pole 32 V dc, 250 V ac Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 170-9406
  • Mfr. Part No. W28-XQ1A-15
Each (In a Bag of 100)
$7.23(exc. GST)
Hager NGT MCB, 1+N, 10A, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4796
  • Mfr. Part No. NGT710
Each
$259.16(exc. GST)
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