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

131 of 999+
Phoenix Contact Surge Protector, 40kA, 1000V dc
  • RS Stock No. 269-7878
  • Mfr. Part No. 1042281
Each
$998.89(exc. GST)
Schurter 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 600V ac
  • RS Stock No. 123-2018
  • Mfr. Part No. 0031.1624
Each
$14.40(exc. GST)
RS PRO HBC, LBC Fuse Kit
  • RS Stock No. 420-274
1 Kit
$478.25(exc. GST)
RS PRO 6.3A FF Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 420-123
Each (In a Pack of 10)
$0.33(exc. GST)
Eaton 160A Fuse Holder for NH00, NH000 Fuse, 1P, 440 V ac/dc, 690 V ac/dc
  • RS Stock No. 127-222
  • Mfr. Part No. 183032 XNH00-1-A160-BT
Each
$160.61(exc. GST)
Eaton 32A Tag Fuse, 415V ac
  • RS Stock No. 229-143
  • Mfr. Part No. NITD32M50
1 Pack of 20
$1,029.16(exc. GST)
Eaton 63A Fuse Holder for 60 x 125 x 35.6mm Fuse, 1P, 690V
  • RS Stock No. 228-875
  • Mfr. Part No. CM63F
1 Pack of 10
$688.35(exc. GST)
Littelfuse 2.5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3726
  • Mfr. Part No. 021502.5MXP
Each (In a Pack of 10)
$2.719(exc. GST)
Eaton NZMC3 Electronic Circuit Breaker 500A , 4 channels , Fixed
  • RS Stock No. 121-333
  • Mfr. Part No. 168469 NZMC3-4-A500/320-SVE
Each
$7,879.15(exc. GST)
Phoenix Contact Thermal Circuit Breaker - TCP Single Pole 32V dc Voltage Rating On Base Element, 6A Current Rating
  • RS Stock No. 558-696
  • Mfr. Part No. 1499965
1 Pack of 100
$1,517.86(exc. GST)
Siemens 630A Solid Link for LV HRC Fuses
  • RS Stock No. 395-711
  • Mfr. Part No. 3NG1402
Each
$166.95(exc. GST)
Eaton 100A British Standard Fuse, 240V ac, 43mm
  • RS Stock No. 414-796
  • Mfr. Part No. GSA100
Each (In a Pack of 5)
$91.77(exc. GST)
Siemens SENTRON 5SY Circuit Breaker, 3P, 16A Curve D, 440V AC, 72V DC, 30 kA Breaking Capacity
  • RS Stock No. 664-315
  • Mfr. Part No. 5SY8316-8BB08
Each
$303.50(exc. GST)
Mersen 160A NH Fuse, NH2, 500V ac
  • RS Stock No. 270-3143
  • Mfr. Part No. Y216704
Each
$47.69(exc. GST)
ABB Earth & Neutral Terminal Bar for use with MCB
  • RS Stock No. 232-0024
  • Mfr. Part No. GJI2320072R0017 SZ-KLB 16
1 Box of 1
$25.95(exc. GST)
Littelfuse 300A Grey, White CF Car Fuse, 58V dc
  • RS Stock No. 337-7993
  • Mfr. Part No. 155.0892.6301
Each
$25.01(exc. GST)
Hager HMC MCB, 3P, 80A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-113
  • Mfr. Part No. HMC380
Each
$1,030.99(exc. GST)
Legrand VX 1 Phase Busbar, 230V, 125mm Pitch
  • RS Stock No. 786-5687
  • Mfr. Part No. 4 050 02
Each
$143.12(exc. GST)
Hager Hager HMX Circuit Breaker, 3P, 16A Curve C, 415V AC, 50 kA Breaking Capacity
  • RS Stock No. 599-871
  • Mfr. Part No. HMX316
Each
$1,098.50(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 3 channels
  • RS Stock No. 155-904
  • Mfr. Part No. 3VA2450-6KQ32-0AA0
Each
$9,275.02(exc. GST)
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