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

121 of 999+
Temporarily out of stock
ABB 40A Tag Fuse, 150 x 40 x 72mm, 500V
  • RS Stock No. 251-3470
  • Mfr. Part No. 1SCA022627R4900
1 Box of 3
$144.67(exc. GST)
In Stock
Eaton 208 → 240V ac Undervoltage Release Circuit Trip for use with N(S)2(-4) Series, N(S)3(-4) Series, NZM2(-4)
  • RS Stock No. 537-5630
  • Mfr. Part No. 259591 NZM2/3-XUHIV208-240AC
Each
$470.12(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-394
  • Mfr. Part No. 3VA5140-6ED31-1AA0
Each
$1,688.94(exc. GST)
In Stock
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 1P, 6A Curve D, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-531
  • Mfr. Part No. M9F12106
Each
$100.08(exc. GST)
Temporarily out of stock
Eaton 63A Tag Fuse, 22 x 86mm, 690V, 73mm
  • RS Stock No. 260-696
  • Mfr. Part No. TIS63
1 Pack of 20
$884.15(exc. GST)
Temporarily out of stock
Hager CDA RCD Switch, 40A, 2 Pole, 30mA, Type A, 127 → 230V
  • RS Stock No. 599-822
  • Mfr. Part No. CDA747F
Each
$232.83(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Arrester, 4.2kV, DIN Rail Mount
  • RS Stock No. 493-502
  • Mfr. Part No. 1466776
Each
$475.13(exc. GST)
In Stock
Eaton Fuse Holder Neutral Terminal
  • RS Stock No. 228-878
  • Mfr. Part No. 32NNL
1 Pack of 10
$43.09(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 1P + N, 16A Curve D, 250V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 664-335
  • Mfr. Part No. 5SY8516-8
Each
$212.67(exc. GST)
Last RS stock
Wickmann 0.14A Resettable Fuse, 60V dc
  • RS Stock No. 174-0862
  • Mfr. Part No. RF1334-000
Each (In a Pack of 20)
$0.664(exc. GST)
Temporarily out of stock
Wickmann 0.35A Resettable Fuse, 6V dc
  • RS Stock No. 174-0725
  • Mfr. Part No. 1206L035YR
Each (In a Pack of 20)
$0.507(exc. GST)
Temporarily out of stock
Siemens 224A Tag Fuse, NH2, 400V ac
  • RS Stock No. 144-089
  • Mfr. Part No. 3NA6242-4
1 Pack of 3
$139.36(exc. GST)
In Stock
RS PRO 4A Pink Blade Car Fuse, 32V dc
  • RS Stock No. 563-716
Each (In a Pack of 10)
$1.813(exc. GST)
Temporarily out of stock
Siemens SENTRON Undervoltage Release for use with 3VA1 and 3VA20-26
  • RS Stock No. 157-837
  • Mfr. Part No. 3VA9908-0BB12
Each
$440.85(exc. GST)
Temporarily out of stock
Eaton 16A Base Mount Fuse Holder for D01mm Fuse, 3P, 400V
  • RS Stock No. 261-682
  • Mfr. Part No. TFRN01-SB
1 Pack of 5
$197.13(exc. GST)
Currently unavailable
Wickmann 0.75A Resettable Fuse, 6V dc
  • RS Stock No. 174-0386
  • Mfr. Part No. RF1348-000
1 Reel of 15000
$7,915.88(exc. GST)
In Stock
Schneider Electric Distribution Block for use with Compact, Kaedra, Pragma, Prisma-G, Prisma-P, Prisma-Pack, Prisma-PH,
  • RS Stock No. 822-7953
  • Mfr. Part No. LGY412548
Each
$83.82(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Acti9 iC60 MCB, 3P, 63A, Type AC, 500V AC, 300 mA Breaking Capacity
  • RS Stock No. 347-125
  • Mfr. Part No. A9V15363
Each
$1,689.36(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 1P, 20A Curve D, 400V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 610-535
  • Mfr. Part No. 5SY7120-8
Each
$102.20(exc. GST)
Temporarily out of stock
Hager RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type F
  • RS Stock No. 602-090
  • Mfr. Part No. ADF825F
Each
$705.52(exc. GST)
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