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

34963 Products showing for Fuses & Circuit Breakers

113 of 999+
Better World
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-3236
  • Mfr. Part No. 1SDA071124R1
Each
$29,364.16(exc. GST)
Hager Hager HMX Circuit Breaker, 3P, 20A Curve C, 415V AC, 50 kA Breaking Capacity
  • RS Stock No. 599-781
  • Mfr. Part No. HMX320
Each
$1,132.92(exc. GST)
Siemens SENTRON Rotary Operator for use with 3VA13/14, 3VA23/24
  • RS Stock No. 157-992
  • Mfr. Part No. 3VA9467-0EK21
Each
$514.48(exc. GST)
Hager CEC RCCB, 25A, 3P+N Pole, 100mA, Type AC, 230 → 400V ac
  • RS Stock No. 597-872
  • Mfr. Part No. CEC825F
Each
$781.48(exc. GST)
Hager CEC RCCB, 63A, 3P+N Pole, 100mA, Type AC, 230 → 400V ac
  • RS Stock No. 597-874
  • Mfr. Part No. CEC863F
Each
$1,244.30(exc. GST)
Better World
ABB Compact Home SH200 MCB, 3P, 6A Curve C, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 539-8330
  • Mfr. Part No. 2CDS213001R0064 SH203-C6
Each
$115.04(exc. GST)
RS PRO PC Board Non Resettable Fuse, Axial 15A, 32V ac/dc
  • RS Stock No. 764-9508
Each (In a Pack of 10)
$0.809(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)
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)
Schneider Electric, Wiser Energy PowerTag, 63A, Energy Sensor, 2VA, Wireless
  • RS Stock No. 276-8964
  • Mfr. Part No. R9M60
Each
$162.80(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)
Better World
Siemens SIRIUS Electronic Circuit Breaker 160mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-101
  • Mfr. Part No. 3RV2411-0AA15
Each
$522.96(exc. GST)
ETI 63A Bottle Fuse Holder, 3P, 500V ac
  • RS Stock No. 289-8950
  • Mfr. Part No. 2323016
Each
$108.52(exc. GST)
ABB DDA200 RCD, 25A, 4 Pole, 300mA, Type AC
  • RS Stock No. 183-3654
  • Mfr. Part No. 2CSB204001R3250
Each
$215.78(exc. GST)
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 3A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9274
  • Mfr. Part No. A9F94203
Each
$561.15(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)
Eaton 2A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 458-8510
  • Mfr. Part No. KTK-2
Each (In a Pack of 5)
$100.384(exc. GST)
32A Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 262-005
  • Mfr. Part No. CHM1DU
1 Pack of 12
$135.25(exc. GST)
ABB 48 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1912
  • Mfr. Part No. 1SL1207A00 65P12X42
Each
$292.00(exc. GST)
Wickmann Resettable Fuse, 125V
  • RS Stock No. 174-0696
  • Mfr. Part No. 0460002.UR
Each (In a Pack of 5)
$4.16(exc. GST)
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