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

236 of 999+
In Stock
Bourns Surge Protector, 50kA, 4kV, DIN Rail Mount
  • RS Stock No. 287-9649
  • Mfr. Part No. 1420A-PV-1500-Y
Each
$398.29(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 2A Current Rating
  • RS Stock No. 135-902
  • Mfr. Part No. 0914992
1 Pack of 3
$843.67(exc. GST)
Temporarily out of stock
Schneider Electric 3, 3+N Phase Surge Arrester, 65kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 654-689
  • Mfr. Part No. A9L15586
Each
$2,434.72(exc. GST)
Temporarily out of stock
Phoenix Contact CM 2-PA-PLT-UT/PT Adapter for use with PLT-SEC...UT/PT
  • RS Stock No. 130-222
  • Mfr. Part No. 1027866
Each
$1,891.66(exc. GST)
Temporarily out of stock
Eaton PKE Trip Block Electronic Circuit Breaker 160A , 4 channels , Fixed
  • RS Stock No. 121-805
  • Mfr. Part No. 147393 NZMN2-4-A160-BT
Each
$3,314.77(exc. GST)
Temporarily out of stock
Endress+Hauser Single Phase Surge Arrester, Screw Mount Mount
  • RS Stock No. 690-294
  • Mfr. Part No. HAW569-CB2CPA
Each
$446.50(exc. GST)
In Stock
Littelfuse 1.1A Resettable Fuse, 33V dc
  • RS Stock No. 787-4255P
  • Mfr. Part No. 1812L110/33MR
Each (Supplied on a Reel)
$0.777(exc. GST)
Temporarily out of stock
onsemi Thermal Fuse +125°C 3 A, 5V
  • RS Stock No. 195-8753P
  • Mfr. Part No. NIS6350MT1TXG
Each (Supplied on a Reel)
$2.242(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Centre Feed Unit, Canalis KS Series
  • RS Stock No. 211-0454
  • Mfr. Part No. KSA250ABT4
Each
$2,215.40(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0787
  • Mfr. Part No. 3WA9111-0AN22
Each
$518.75(exc. GST)
New product - Preorder today
Schneider Electric Resi9 MCB, 3P, 20A Curve B, 400V AC, 6000 A Breaking Capacity
  • RS Stock No. 654-653
  • Mfr. Part No. R9F23320
Each
$186.40(exc. GST)
In Stock
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2906
  • Mfr. Part No. T218195
1 Box of 10
$93.84(exc. GST)
In Stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 384-027
  • Mfr. Part No. 3101.0015
Each (In a Pack of 5)
$8.872(exc. GST)
In Stock
RS PRO 200A British Standard Fuse, A4, 415V ac, 93.7mm
  • RS Stock No. 521-2731
Each
$92.53(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 429-193
  • Mfr. Part No. C16N6TM100
Each
$3,945.51(exc. GST)
Temporarily out of stock
RS PRO 3A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8086
Each (In a Pack of 50)
$1.133(exc. GST)
In Stock
Mersen 2A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2892
  • Mfr. Part No. S216653
1 Box of 10
$96.49(exc. GST)
In Stock
Bulgin 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 512-5996
  • Mfr. Part No. FX0462
Each (In a Pack of 5)
$16.066(exc. GST)
Temporarily out of stock
Siemens 25A Bottle Fuse Holder, 500V ac
  • RS Stock No. 202-7148
  • Mfr. Part No. 5SH1112
Each (In a Pack of 20)
$9.355(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-730
  • Mfr. Part No. 3VA5560-7GC46-0AA0
Each
$11,077.69(exc. GST)
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