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

35111 Products showing for Fuses & Circuit Breakers

5 of 999+
In Stock
Schneider Electric Acti9 C60H-DC Miniature Circuit Breaker, 2-Pole, 32 A, Type C, 500 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 772-1537
  • Mfr. Part No. A9N61535
Subtotal (1 unit)
$162.49(exc. GST)
In Stock
Siemens SIRIUS 3RV2 3 Phase Busbar
  • RS Stock No. 755-2959
  • Mfr. Part No. 3RV2917-4B
Subtotal (1 unit)
$109.59(exc. GST)
In Stock
ETA 1658 Thermal Circuit Breaker - 1-Pole, Panel, 10 A Current Rating, 25 A, 250 V ac, 28 V dc
  • RS Stock No. 273-0860
  • Mfr. Part No. 1658-G21-02-P10-10A
Subtotal (1 unit)
$13.47(exc. GST)
In Stock
Schurter 200 mA T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 777-7485
  • Mfr. Part No. 0034.3110
Subtotal (1 pack of 10 units)
$9.98(exc. GST)
In Stock
Clipsal Electrical Residual Current Circuit Breaker with Overload Protection, 10 A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 282-2969
  • Mfr. Part No. MX9R3110
Subtotal (1 unit)
$67.84(exc. GST)
In Stock
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 20 A, Type B, 253 V ac AC, 72 V dc DC,
  • RS Stock No. 535-6005
  • Mfr. Part No. 2CDS271001R0205 S201M-B20
Subtotal (1 unit)
$36.32(exc. GST)
In Stock
Eaton 1 A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1212
  • Mfr. Part No. S500-1-R
Subtotal (1 pack of 10 units)
$5.39(exc. GST)
In Stock
RS PRO 200 mA T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 610-9872
Subtotal (1 pack of 10 units)
$11.01(exc. GST)
In Stock
RS PRO 2.5 A T Glass Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 668-6004
Subtotal (1 pack of 10 units)
$4.07(exc. GST)
In Stock
ABB System Pro M Compact S200 Miniature Circuit Breaker, 1-Pole, 1 A, Type C, 230 V ac AC, 72 V dc DC, 6 kA Breaking
  • RS Stock No. 746-7646
  • Mfr. Part No. 2CDS251001R0014 S201-C1
Subtotal (1 unit)
$40.07(exc. GST)
In Stock
Schneider Electric Acti9 IC60N Miniature Circuit Breaker, 3-Pole, 6 A, Type C, 440 V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 230-6663
  • Mfr. Part No. A9F44306
Subtotal (1 unit)
$91.98(exc. GST)
In Stock
Littelfuse Non-Resettable Fuse, Axial 5 A, 125 V ac/dc
  • RS Stock No. 541-3300
  • Mfr. Part No. 0251005.NRT1L
Subtotal (1 pack of 10 units)
$14.73(exc. GST)
In Stock
TE Connectivity 0.25 to 20 A W28 Thermal Circuit Breaker - 1-Pole, Direct, 5 A Current Rating, 1000 A, 240 V ac, 50 V dc
  • RS Stock No. 782-0924
  • Mfr. Part No. W28-XQ1A-5
Subtotal (1 unit)
$10.67(exc. GST)
In Stock
Mersen 16 A GG Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 188-7000
  • Mfr. Part No. G200750 / FR10GG50V16
Subtotal (1 pack of 10 units)
$45.73(exc. GST)
In Stock
RS PRO 500 mA T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 610-9901
Subtotal (1 pack of 10 units)
$6.83(exc. GST)
In Stock
Socomec 2 A Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 122-5262
  • Mfr. Part No. 60120002
Subtotal (1 pack of 10 units)
$35.36(exc. GST)
In Stock
RS PRO 10 A T Ceramic Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 563-592
Subtotal (1 pack of 10 units)
$18.56(exc. GST)
In Stock
Clipsal Electrical Residual Current Circuit Breaker with Overload Protection, 20 A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 282-2973
  • Mfr. Part No. MX9R3120
Subtotal (1 unit)
$136.26(exc. GST)
In Stock
Eaton NZM Door Coupling Handle for use with NZM1(-4), PN1(-4), N(S)1(-4)
  • RS Stock No. 257-822
  • Mfr. Part No. 279392 NZM1-XTVD-0
Subtotal (1 unit)
$176.70(exc. GST)
In Stock
RS PRO 800 mA T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 414-415
Subtotal (1 pack of 10 units)
$34.85(exc. GST)
1
5
1756
Results per page

Related links