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

138 of 999+
Mersen 10A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0600
  • Mfr. Part No. A1014576 / FR10GR69V10
Each
$23.14(exc. GST)
Mersen 63A Bottle Fuse Holder, 2P, 400V ac
  • RS Stock No. 715-9020
  • Mfr. Part No. J1012606
Each
$300.41(exc. GST)
Eaton 5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1313
  • Mfr. Part No. S506-5-R
Each (In a Pack of 10)
$0.453(exc. GST)
Siemens SENTRON Cover Frame for use with RCD520, RCD820
  • RS Stock No. 161-951
  • Mfr. Part No. 3VA9303-0SB40
Each
$173.93(exc. GST)
Bourns Single, Three Phase Surge Protector, 50kA, 0.7kV, DIN Rail Mount
  • RS Stock No. 287-9616
  • Mfr. Part No. 1250A-1S-120
Each
$135.98(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 231-306
  • Mfr. Part No. 112741 NZMC1-A100-SVE
Each
$1,400.97(exc. GST)
Eaton Three Phase Surge Protector, 12.5kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 120-840
  • Mfr. Part No. 158331 SPBT12-280/4
Each
$1,533.33(exc. GST)
Eaton 30A Glass Melamine Cartridge Fuse, 0.56 x 0.87in
  • RS Stock No. 261-429
  • Mfr. Part No. TPS-30
1 Pack of 10
$817.09(exc. GST)
ETI 6A D01 Neozed Fuse, E14 Thread Size, gG, 400V ac
  • RS Stock No. 415-957
  • Mfr. Part No. 2211003
Each (In a Pack of 5)
$3.06(exc. GST)
Mersen Surge Protector, 40kA, Plug In Mount
  • RS Stock No. 179-3076
  • Mfr. Part No. 83020006 / SP2-40K1000V-PV
Each
$86.03(exc. GST)
PTC Resettable Fuse 30V 500mA 1812
  • RS Stock No. 560-346
  • Mfr. Part No. 0ZCG0050AF2C
Each
$0.25(exc. GST)
Eaton 32A Fuse Holder for 10 x 38mm Fuse, 3P, 690V ac
  • RS Stock No. 263-151
  • Mfr. Part No. CHM3DU
1 Pack of 4
$153.37(exc. GST)
ETI 63A Bottle Fuse Holder, 3P, 500V ac
  • RS Stock No. 289-8950
  • Mfr. Part No. 2323016
Each
$108.52(exc. GST)
Rittal SZ Busbar
  • RS Stock No. 230-4854
  • Mfr. Part No. 2364000
Each
$292.60(exc. GST)
Eaton 5A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 458-8526
  • Mfr. Part No. KTK-5
Each (In a Pack of 5)
$95.65(exc. GST)
Siemens SENTRON Arc Chute
  • RS Stock No. 277-0806
  • Mfr. Part No. 3WA9111-0AS12
Each
$669.25(exc. GST)
WJ Furse Copper Earth Clamp Max. Conductor Size 25 x 3mm 25mm
  • RS Stock No. 153-2964
  • Mfr. Part No. 7TCA083610R0010 CT105-H
Each (In a Pack of 10)
$23.861(exc. GST)
Siemens SENTRON Busbar
  • RS Stock No. 265-561
  • Mfr. Part No. 8US1922-1CA02
1 Pack of 10
$277.96(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 4 channels
  • RS Stock No. 259-3636
  • Mfr. Part No. 1SDA071610R1
Each
$27,096.74(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 400mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-760
  • Mfr. Part No. 3RV2411-0EA20
Each
$437.65(exc. GST)
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