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

143 of 999+
Temporarily out of stock
Schneider Electric ComPacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 654-622
  • Mfr. Part No. C160N4FM
Each
$12,688.94(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Active iDT40 AFDD, 40A, 1+N Pole
  • RS Stock No. 238-3483
  • Mfr. Part No. A9TAA2640
Each
$1,207.50(exc. GST)
In Stock
Legrand 500mA Ceramic Cartridge Fuse, 8 x 32mm
  • RS Stock No. 266-3086
  • Mfr. Part No. 0 123 94
1 Box of 10
$151.42(exc. GST)
In Stock
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 221-5627
  • Mfr. Part No. 3-128-234
Each
$42.52(exc. GST)
In Stock
Schneider Electric Acti 9 Cover for use with ARA, IC60, iDPN Vigi, iLD, iSW, ISW-NA, RCA, Reflex iC60
  • RS Stock No. 791-2773
  • Mfr. Part No. A9A26981
Each (In a Pack of 20)
$4.205(exc. GST)
In Stock
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 15A Current Rating
  • RS Stock No. 221-5612
  • Mfr. Part No. 3-128-218
Each
$49.36(exc. GST)
Temporarily out of stock
Schneider Electric Flexible Busbar Trunking, 3mm, 400A, KSC40 Series
  • RS Stock No. 207-303
  • Mfr. Part No. KSC400ED4306
Each
$5,452.02(exc. GST)
In Stock
nVent ERICO Surge Protector, 65kA, 1550V ac, DIN Rail Mount
  • RS Stock No. 277-6229
  • Mfr. Part No. DT1M27540R
Each
$2,443.32(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-233
  • Mfr. Part No. 3VA5340-6EC61-0AA0
Each
$7,340.04(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 A9F MCB, 4P, 1.6A, Type Z, 500V AC, 250V DC, 415 V Breaking Capacity
  • RS Stock No. 577-185
  • Mfr. Part No. A9F92472
1 Pack of 3
$2,101.13(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 20A Curve D, 440V AC, 12V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9611
  • Mfr. Part No. 2CDS253001R0201 S203-D20
Each
$171.26(exc. GST)
In Stock
Bulgin 13A Panel Mount Fuse Holder for 6.3 x 25mm Fuse, 1P, 250V ac
  • RS Stock No. 414-099
  • Mfr. Part No. FX0416/S
Each
$22.42(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 3m, 630A, Canalis KS Series
  • RS Stock No. 211-0482
  • Mfr. Part No. KSA630ED4306
Each
$3,082.75(exc. GST)
Currently unavailable
RS PRO HBC, LBC Fuse Kit
  • RS Stock No. 420-274
1 Kit
$478.25(exc. GST)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6333
  • Mfr. Part No. C12N3TM160L
Each
$2,497.55(exc. GST)
Temporarily out of stock
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 232-3146
  • Mfr. Part No. 33554
Each
$21,843.76(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 45A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-631
  • Mfr. Part No. 3VA5145-4ED41-0AA0
Each
$1,396.88(exc. GST)
In Stock
Schurter 5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4243
  • Mfr. Part No. 8020.5018.G
Each (In a Pack of 10)
$1.517(exc. GST)
Temporarily out of stock
Siemens 100A Tag Fuse, 102.5mm, 690V, 75mm
  • RS Stock No. 608-836
  • Mfr. Part No. 3NE8021-3MK
1 Pack of 3
$372.38(exc. GST)
New product - Preorder today
Schneider Electric R9R RCCB, 40A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-662
  • Mfr. Part No. R9R22240
Each
$236.68(exc. GST)
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