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

217 of 999+
In Stock
Better World
Schneider Electric Acti 9 A9F9 MCB, 4P, 6A Curve B, 400V AC, 250V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2499
  • Mfr. Part No. A9F93406
Each
$1,208.46(exc. GST)
In Stock
SIBA 20A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3399
  • Mfr. Part No. 70-059-60/20A
Each (In a Pack of 10)
$0.805(exc. GST)
New product - Preorder today
SMF NANO FUSE CLIP SB RoHS 260C 2A
  • RS Stock No. 522-977
  • Mfr. Part No. 0157002.DRT
1 Pack of 1500
$15,255.41(exc. GST)
In Stock
Leitungsschutzschalter Resi9 3P, 25A, C
  • RS Stock No. 537-815
  • Mfr. Part No. R9F28325
Each
$291.72(exc. GST)
Temporarily out of stock
Siemens SENTRON 3 Phase Busbar, 230V, 18mm Pitch
  • RS Stock No. 328-435
  • Mfr. Part No. 5ST3673-4
Each
$97.94(exc. GST)
Temporarily out of stock
315A Tag Fuse, 54 x 150mm, 400V
  • RS Stock No. 263-436
  • Mfr. Part No. 315NHG03B-400
1 Pack of 3
$104.41(exc. GST)
Temporarily out of stock
nVent ERICO Neutral Busbar Busbar
  • RS Stock No. 646-806
  • Mfr. Part No. 568679
Each
$32.24(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - 209 3 Pole 240V ac Voltage Rating Panel Mount, 30A Current Rating
  • RS Stock No. 275-0058
  • Mfr. Part No. 209-3-1-61-4-9-30-V
1 Box of 5
$3,206.27(exc. GST)
Temporarily out of stock
Eaton 63A Fuse Holder for 57 x 36 x 201mm Fuse, 3P, 400V ac
  • RS Stock No. 248-253
  • Mfr. Part No. 100663 Z-D02/R/3-36
Each
$61.35(exc. GST)
Temporarily out of stock
Better World
Schneider Electric MCCB 3P, Fixed Mount
  • RS Stock No. 178-7891
  • Mfr. Part No. LV426946
Each
$229.90(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 50A
  • RS Stock No. 221-0896
  • Mfr. Part No. BDL36050LU
Each
$1,982.39(exc. GST)
Temporarily out of stock
Siemens SENTRON Support for use with Door Mounted Rotary Operator 3VA20/21/22
  • RS Stock No. 263-644
  • Mfr. Part No. 3VA9267-0GA85
Each
$142.42(exc. GST)
Temporarily out of stock
ABB S-ARC1 MCB, 1+N, 13A Curve C, 240V AC, 6 kA Breaking Capacity
  • RS Stock No. 175-9926
  • Mfr. Part No. 2CSA255901R9134 S-ARC1 C13
Each
$454.76(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 110A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-941
  • Mfr. Part No. BGL36110LU
Each
$3,037.77(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4143
  • Mfr. Part No. 3VA1110-3ED36-0AA0
Each
$1,024.08(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0838
  • Mfr. Part No. 3WA9111-0AX11
Each
$79.63(exc. GST)
Temporarily out of stock
Hager CDA RCD Switch, 40A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 599-823
  • Mfr. Part No. CDA749F
Each
$220.20(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV4LE 3 Pole 690V ac Voltage Rating, 7A Current Rating
  • RS Stock No. 175-1461
  • Mfr. Part No. GV4LE07S6
Each
$844.89(exc. GST)
Temporarily out of stock
Eaton 35A 45 x 80 x 54mm Neozed Fuse, 400V ac
  • RS Stock No. 253-761
  • Mfr. Part No. 268991 Z-SLS/B-35A
Each
$138.49(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-428
  • Mfr. Part No. 3VA6440-6KP41-0AA0
Each
$20,047.26(exc. GST)
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