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

266 of 999+
Temporarily out of stock
Eaton NZM2 Cover for use with NS2, NZM2, PN2
  • RS Stock No. 229-795
  • Mfr. Part No. 119868 NZM2-XKSAE
Each
$62.16(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 429-056
  • Mfr. Part No. C080L320FM
Each
$21,107.22(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Thermal Magnetic Release for use with Distribution
  • RS Stock No. 119-459
  • Mfr. Part No. C50FM
Each
$5,862.54(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 3P 25A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-305
  • Mfr. Part No. C11N34V025B
Each
$6,033.52(exc. GST)
Temporarily out of stock
Phoenix Contact EC-E Electronic Circuit Breaker 3A 24V EC-E1, 1 channels , DIN Rail
  • RS Stock No. 131-318
  • Mfr. Part No. 0903025
Each (In a Pack of 6)
$182.857(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELH11 2 Pole Panel Mount, 40A Current Rating
  • RS Stock No. 275-0233
  • Mfr. Part No. IELH11-1-62-40.0-AC-01-V
Each
$333.14(exc. GST)
In Stock
ABB Surge Protector, DIN Rail Mount
  • RS Stock No. 136-3868
  • Mfr. Part No. 1SNA295401R2300
Each
$13.04(exc. GST)
In Stock
Wickmann SMD Non Resettable Fuse 20A, 32V
  • RS Stock No. 174-0907
  • Mfr. Part No. 0501020.WR
Each (In a Pack of 10)
$1.173(exc. GST)
Temporarily out of stock
Eaton 100A Cartridge Fuse, 25 x 110mm
  • RS Stock No. 228-864
  • Mfr. Part No. CEO100
1 Pack of 10
$894.76(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0315
  • Mfr. Part No. 8GK1072-3KK31
Each
$3,411.82(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-382
  • Mfr. Part No. 3VA6225-8JP41-2AA0
Each
$9,956.45(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 25A 3VA2, 3 channels
  • RS Stock No. 157-263
  • Mfr. Part No. 3VA2125-5JP36-0AA0
Each
$3,229.48(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board Enclosure, 34 Way
  • RS Stock No. 339-350
  • Mfr. Part No. SEA9BN4SXP
Each
$666.80(exc. GST)
Temporarily out of stock
Siemens 25A Tag Fuse, 88mm, 690V, 71.2mm
  • RS Stock No. 608-752
  • Mfr. Part No. 3NC1825-0MK
1 Pack of 3
$112.12(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 210-3324
  • Mfr. Part No. 3VA1040-3ED32-0AA0
Each
$705.53(exc. GST)
Temporarily out of stock
Eaton 355A Tag Fuse, 3L, 1.5kV
  • RS Stock No. 282-6213
  • Mfr. Part No. PV-355A-3L-15
Each
$1,119.78(exc. GST)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA10/11
  • RS Stock No. 153-377
  • Mfr. Part No. 3VA9113-0JJ12
Each
$248.64(exc. GST)
In Stock
WAGO Electronic Circuit Breaker 4A 24V 787, 1 channels , DIN Rail
  • RS Stock No. 303-325
  • Mfr. Part No. 787-3861/400-000
Each
$83.08(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 12.5A Curve D, 400V AC, 72V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-621
  • Mfr. Part No. 5SY8424-8BB08
Each
$567.58(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-184
  • Mfr. Part No. 3VA6610-7JT46-0AA0
Each
$30,945.78(exc. GST)
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