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

232 of 999+
SASY 60i Busbar
  • RS Stock No. 252-816
  • Mfr. Part No. 215270 CU15X5
Each
$85.31(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 175-1532
  • Mfr. Part No. GV4PE115S
Each
$1,467.37(exc. GST)
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-338
  • Mfr. Part No. 3VA6560-5HN32-2AA0
Each
$8,700.73(exc. GST)
Hager Hager NRN Circuit Breaker, 3P, 10A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 599-706
  • Mfr. Part No. NRN310
Each
$428.25(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 400mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 159-684
  • Mfr. Part No. 3RV2711-0ED10
Each
$779.30(exc. GST)
Siemens 400A Tag Fuse, 149mm, 690V
  • RS Stock No. 608-717
  • Mfr. Part No. 3NE1332-3
1 Pack of 3
$1,446.64(exc. GST)
Better World
Siemens RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 151-1208
  • Mfr. Part No. 5SU1356-6KK16
Each
$280.86(exc. GST)
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 3P, 45A Curve C, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-066
  • Mfr. Part No. M9F42345
Each
$460.30(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 260-528
  • Mfr. Part No. 3VA6225-7KM31-0AA0
Each
$14,958.13(exc. GST)
Wickmann SMD Non Resettable Fuse 5A, 125V
  • RS Stock No. 174-0287
  • Mfr. Part No. 0157005.DR
1 Reel of 1500
$4,755.39(exc. GST)
Eaton 80A Cartridge Fuse, 64 x 442mm
  • RS Stock No. 243-281
  • Mfr. Part No. 17.5THMEJ80
Each
$679.42(exc. GST)
SENTRON Plug In Unit for use with 3VA61/62 Series
  • RS Stock No. 263-600
  • Mfr. Part No. 3VA9144-0KP00
1 Kit
$2,505.53(exc. GST)
Phoenix Contact Mounting Frame for use with D-SUB
  • RS Stock No. 881-8203
  • Mfr. Part No. 1688638
1 Box of 5
$59.68(exc. GST)
Eaton xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 232-149
  • Mfr. Part No. 116666 BPM-O-800/12-P
Each
$2,870.21(exc. GST)
SENTRON Wire Connector for use with 3VA55, 3VA65/66 Series
  • RS Stock No. 263-982
  • Mfr. Part No. 3VA9673-0JC34
1 Kit
$1,918.92(exc. GST)
Schneider Electric MasterPact Connection Unit for use with MTZ1 06-16
  • RS Stock No. 212-184
  • Mfr. Part No. LV833731
Each
$678.40(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 4 channels
  • RS Stock No. 160-188
  • Mfr. Part No. 3VA2450-5JQ42-0AA0
Each
$11,059.15(exc. GST)
Bourns 2.6A Resettable Fuse, 6V
  • RS Stock No. 245-9155
  • Mfr. Part No. MF-LSMF260/6X-2
Each (On a Reel of 3000)
$0.651(exc. GST)
Bourns 3.3A Resettable Fuse, 6V
  • RS Stock No. 245-9166
  • Mfr. Part No. MF-LSMF330X-2
Each (On a Tape of 10)
$0.711(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 16A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9630
  • Mfr. Part No. 3VA10963ED460AA0
Each
$1,035.02(exc. GST)
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