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

35084 Products showing for Fuses & Circuit Breakers

1749 of 999+
In Stock
Siemens SENTRON 5SY5 Miniature Circuit Breaker, 2-Pole, 10 A, Type C, 400 V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 203-2341
  • Mfr. Part No. 5SY5210-7
Subtotal (1 unit)
$251.30(exc. GST)
Temporarily out of stock
ABB, XT2N, 1SD Circuit Breaker 4-Pole 50 A, Breaking Capacity 36 kA
  • RS Stock No. 720-973
  • Mfr. Part No. 1SDA067036R1
Subtotal (1 unit)
$641.89(exc. GST)
Temporarily out of stock
ABB SUP400 2CC Miniature Circuit Breaker, 1-Pole, 15 A, K, 480 V AC, 20 kA Breaking Capacity
  • RS Stock No. 721-109
  • Mfr. Part No. 2CCG000131R0001
Subtotal (1 unit)
$548.38(exc. GST)
Temporarily out of stock
Siemens Arc Chute
  • RS Stock No. 277-0806
  • Mfr. Part No. 3WA9111-0AS12
Subtotal (1 unit)
$619.48(exc. GST)
Temporarily out of stock
ABB SUP400 2CC Miniature Circuit Breaker, 3-Pole, 13 A, K, 480 V AC, 20 kA Breaking Capacity
  • RS Stock No. 720-762
  • Mfr. Part No. 2CCG000125R0001
Subtotal (1 unit)
$548.38(exc. GST)
Temporarily out of stock
ABB, XT2N, 1SD Circuit Breaker 4-Pole 8 A, Breaking Capacity 36 kA
  • RS Stock No. 717-099
  • Mfr. Part No. 1SDA067028R1
Subtotal (1 unit)
$600.62(exc. GST)
Temporarily out of stock
Eaton Circuit Trip for use with IZMX
  • RS Stock No. 132-432
  • Mfr. Part No. 183988 IZMX-PXRV-TA-1
Subtotal (1 unit)
$9,499.05(exc. GST)
New product - Preorder today
Littelfuse Fuse Clip 2 A, 125V
  • RS Stock No. 522-977
  • Mfr. Part No. 0157002.DRT
Subtotal (1 pack of 1500 units)
$5,414.29(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Withdrawable Unit for use with IZMX40…3-…W, INX40…3-…W
  • RS Stock No. 132-339
  • Mfr. Part No. 183951 IZMX-CAS403-4000-1
Subtotal (1 unit)
$10,007.41(exc. GST)
Temporarily out of stock
Siemens SIRIUS 3RT Terminal Cover for use with 3RT135
  • RS Stock No. 676-117
  • Mfr. Part No. 3RT1956-4EB10
Subtotal (1 unit)
$131.64(exc. GST)
Currently unavailable
Schurter Non-Resettable Fuse 3.15 A, 125 V dc, 250 V ac
  • RS Stock No. 703-2760P
  • Mfr. Part No. 3404.2421.22
Subtotal 10 units (supplied on a continuous strip)
$18.62(exc. GST)
Temporarily out of stock
ABB Emax2 Emax 2 Electronic Circuit Breaker 6300 A, 3 channels Ekip G Touch LSIG Release
  • RS Stock No. 259-3384
  • Mfr. Part No. 1SDA071307R1
Subtotal (1 unit)
$105,122.81(exc. GST)
Temporarily out of stock
ABB Cover for use with Four-Pole XT1
  • RS Stock No. 192-0931
  • Mfr. Part No. 1SDA066656R1
Subtotal (1 unit)
$73.23(exc. GST)
Temporarily out of stock
ABB, XT2N, 1SD Circuit Breaker 4-Pole 16 A, Breaking Capacity 36 kA
  • RS Stock No. 717-101
  • Mfr. Part No. 1SDA067031R1
Subtotal (1 unit)
$600.62(exc. GST)
In Stock
Schneider Electric, ComPact New Generation, NSXm Circuit Breaker 4-Pole 160 A, Breaking Capacity 25 kA, Fixed
  • RS Stock No. 110-316
  • Mfr. Part No. C12B44V160B
Subtotal (1 unit)
$5,803.89(exc. GST)
Temporarily out of stock
ABB, XT1B, 1SD Circuit Breaker 4-Pole 32 A, Breaking Capacity 18 kA
  • RS Stock No. 717-077
  • Mfr. Part No. 1SDA066813R1
Subtotal (1 unit)
$435.48(exc. GST)
Temporarily out of stock
ABB S800 2CC Miniature Circuit Breaker, 2-Pole, 63 A, Type B, 690 V AC, 250 V dc DC, 40 kA Breaking Capacity
  • RS Stock No. 720-773
  • Mfr. Part No. 2CCS862002R0635
Subtotal (1 unit)
$408.39(exc. GST)
Last RS stock
Littelfuse 1.5 A Resettable Fuse, 6 V dc
  • RS Stock No. 506-927P
  • Mfr. Part No. MICROSMD150F
Subtotal 10 units (supplied on a continuous strip)
$6.66(exc. GST)
Temporarily out of stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 25 A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 654-687
  • Mfr. Part No. A9DH3625
Subtotal (1 unit)
$549.74(exc. GST)
Temporarily out of stock
Schurter Non-Resettable Fuse 1.5 A, 63 V dc
  • RS Stock No. 665-7352P
  • Mfr. Part No. 3413.0117.22.
Subtotal 10 units (supplied on a continuous strip)
$9.22(exc. GST)
1
1749
1755
Results per page

Related links