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

244 of 999+
Temporarily out of stock
Eaton 25A Cartridge Fuses, 51 x 359mm
  • RS Stock No. 243-206
  • Mfr. Part No. 12BDGHO25
1 Pack of 3
$2,760.98(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-678
  • Mfr. Part No. 3VA5560-5EC42-2AA0
Each
$9,530.42(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 258-884
  • Mfr. Part No. 284643 BC-U-3/36-TW-ECO
Each
$346.13(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - CB TM2 2 Pole 80V dc Voltage Rating, 1A Current Rating
  • RS Stock No. 217-6378
  • Mfr. Part No. 2800891
Each
$192.27(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Plug for use with Compact NS
  • RS Stock No. 429-413
  • Mfr. Part No. C33543
Each
$300.85(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 1P, 1A Curve D, 400V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-384
  • Mfr. Part No. 5SY7101-8
Each
$110.97(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 1P, 2A Curve D, 400V AC, 60V DC, 70 kA Breaking Capacity
  • RS Stock No. 610-557
  • Mfr. Part No. 5SY8102-8
Each
$131.51(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LSIG, 4 channels
  • RS Stock No. 259-3578
  • Mfr. Part No. 1SDA071556R1
Each
$16,243.21(exc. GST)
Last RS stock
TE Connectivity Thermal Circuit Breaker - W57 Single Pole 250V ac Voltage Rating, 20A Current Rating
  • RS Stock No. 782-7830
  • Mfr. Part No. W57-XB1A7A10-20
Each
$9.44(exc. GST)
Temporarily out of stock
Littelfuse 15A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 738-2829
  • Mfr. Part No. 0326015.MXP
Each (In a Pack of 10)
$3.044(exc. GST)
Temporarily out of stock
Siemens 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 627-149
  • Mfr. Part No. 3NC1210-0MK
1 Pack of 20
$516.81(exc. GST)
Temporarily out of stock
Eaton 80A Cartridge Fuses, 76 x 359mm
  • RS Stock No. 246-019
  • Mfr. Part No. 12BFGHO80
1 Pack of 3
$3,716.69(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Vertical Busbar Trunking with Fire Barrier, 250A, Canalis KS Series
  • RS Stock No. 248-4076
  • Mfr. Part No. KSA250CM4AF
Each
$2,978.22(exc. GST)
In Stock
Hager 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 250-8603
  • Mfr. Part No. LF310PV
Each (In a Pack of 10)
$38.37(exc. GST)
Currently unavailable
Fuse/5x25mm 10A Medium Slow-Blow 241
  • RS Stock No. 565-373
  • Mfr. Part No. 24121000021
Each
$16.46(exc. GST)
Temporarily out of stock
Eaton NZM Circuit Breaker for use with Circuit Breaker
  • RS Stock No. 242-915
  • Mfr. Part No. 192283 NZMH3-4-PX250/VAR
Each
$8,188.06(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 157-338
  • Mfr. Part No. 3VA2216-6JQ42-0AA0
Each
$8,038.83(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 3A, Type A, 230V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-503
  • Mfr. Part No. 5SY4503-5
Each
$202.58(exc. GST)
Temporarily out of stock
Siemens 5SM23 RCCB, 40A, 3 Pole, 30mA, Type A, 400V
  • RS Stock No. 328-359
  • Mfr. Part No. 5SM2332-6KK01
Each
$536.20(exc. GST)
Last RS stock
Eaton 80mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-0988
  • Mfr. Part No. S500-80-R
Each (In a Pack of 10)
$16.71(exc. GST)
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