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

157 of 999+
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2774
  • Mfr. Part No. 2907847
Each
$310.54(exc. GST)
In Stock
Schurter 2.5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7752
  • Mfr. Part No. 0034.1520
Each (In a Pack of 10)
$0.636(exc. GST)
In Stock
Wickmann SMD Non Resettable Fuse 5A, 75V
  • RS Stock No. 174-0661
  • Mfr. Part No. 0458005.DR
Each (In a Pack of 5)
$3.01(exc. GST)
New product - Preorder today
Miniature circuit breaker, 13 A, 1p
  • RS Stock No. 559-689
  • Mfr. Part No. PLSM-C13-Q-MW
Each
$40.87(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 63A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3060
  • Mfr. Part No. A9N18364
Each
$245.07(exc. GST)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 3kA, On Base Element Mount
  • RS Stock No. 207-2700
  • Mfr. Part No. 2905236
Each
$523.55(exc. GST)
Currently unavailable
Wickmann SMD Non Resettable Fuse 1A, 250V
  • RS Stock No. 174-0290
  • Mfr. Part No. 0443001.DR
1 Reel of 1500
$2,860.00(exc. GST)
Temporarily out of stock
SIBA SMD Non Resettable Fuse 250mA, 250V
  • RS Stock No. 736-2617
  • Mfr. Part No. 160000.0,25
Each (In a Bag of 10)
$3.46(exc. GST)
In Stock
Lovato 1 Phase Busbar, 18mm Pitch
  • RS Stock No. 825-6122
  • Mfr. Part No. P1X9031
Each
$82.57(exc. GST)
Limited stock
SIBA 4A F Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3442
  • Mfr. Part No. 70-010-04/4A
Each (In a Pack of 5)
$11.928(exc. GST)
In Stock
Socomec 100A Fuse Holder for 22.2 x 58mm Fuse, 2P
  • RS Stock No. 252-3749
  • Mfr. Part No. 57035012
Each (In a Pack of 3)
$173.49(exc. GST)
Temporarily out of stock
Siemens 25A NH Fuse, NH0, 440 - 500V ac/dc
  • RS Stock No. 269-8304
  • Mfr. Part No. 3NA3010
Each (In a Pack of 3)
$66.367(exc. GST)
In Stock
Schurter 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 412-863
  • Mfr. Part No. 0031.1804
Each (In a Pack of 5)
$12.644(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 4P, 13A Curve D, 400V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 610-274
  • Mfr. Part No. 5SY7613-8
Each
$509.89(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 400A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 432-919
  • Mfr. Part No. NLGL36400U53X
Each
$26,240.74(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 iC60N MCB, 3P, 40A Curve C
  • RS Stock No. 230-6670
  • Mfr. Part No. A9F44340
Each
$101.97(exc. GST)
Temporarily out of stock
Mersen 75A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 238-4041
  • Mfr. Part No. H220968
Each
$105.24(exc. GST)
In Stock
ABB 25A Centred Tag Fuse, NH000, 500V
  • RS Stock No. 779-9952
  • Mfr. Part No. OFAF000H25 1SCA022627R0820
Each
$9.94(exc. GST)
In Stock
ETI 20A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-670
  • Mfr. Part No. 2312406
Each (In a Pack of 5)
$3.286(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-197
  • Mfr. Part No. 3VA5320-6EF41-0AA0
Each
$9,268.22(exc. GST)
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