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

35264 Products showing for Fuses & Circuit Breakers

12 of 999+
In Stock
RS PRO 6.3A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-330
Subtotal (1 pack of 10 units)
$9.47(exc. GST)
$0.947/unit
Temporarily out of stock
Schneider Electric Acti9 Acti9 1 Phase Distribution Board 125A 12 Way
  • RS Stock No. 207-257
  • Mfr. Part No. SE125A12
Subtotal (1 unit)
$395.52(exc. GST)
$395.52/unit
In Stock
Mersen 32A GG Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 304-1048
  • Mfr. Part No. A214107 / FR10GG40V32
Subtotal (1 pack of 10 units)
$32.24(exc. GST)
$3.224/unit
In Stock
TE Connectivity W54 Thermal Circuit Breaker - 1-Pole, Direct, 5A Current Rating, 1000 A, 250V ac, 50 V dc
  • RS Stock No. 782-8035
  • Mfr. Part No. W54-XB1A4A10-5
Subtotal (1 unit)
$10.37(exc. GST)
$10.37/unit
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 16A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3382
  • Mfr. Part No. A9F54316
Subtotal (1 unit)
$449.21(exc. GST)
$449.21/unit
Being discontinued
RS PRO 315mA T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-611
Subtotal (1 pack of 10 units)
$12.01(exc. GST)
$1.201/unit
In Stock
Hager HMD Miniature Circuit Breaker, 3-Pole, 80A, Type D, 415V ac AC, 15 kA Breaking Capacity
  • RS Stock No. 602-231
  • Mfr. Part No. HMD380
Subtotal (1 unit)
$1,072.58(exc. GST)
$1,072.58/unit
In Stock
RS PRO 16A Rail Mount Fuse Holder for 5 x 20 mm, 600V ac
  • RS Stock No. 501-809
Subtotal (1 pack of 10 units)
$138.68(exc. GST)
$13.868/unit
In Stock
Rittal Earth Bar L. 450 mm x W. 15mm x H. 5 mm
  • RS Stock No. 826-2868
  • Mfr. Part No. 7113000
Subtotal (1 unit)
$144.55(exc. GST)
$144.55/unit
In Stock
SIBA 1.6A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3232
  • Mfr. Part No. 70-007-33/1.6A
Subtotal (1 pack of 10 units)
$3.84(exc. GST)
$0.384/unit
In Stock
Littelfuse 15A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 738-2829
  • Mfr. Part No. 0326015.MXP
Subtotal (1 pack of 10 units)
$28.02(exc. GST)
$2.802/unit
In Stock
Eaton 30A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 848-2902
  • Mfr. Part No. AGC-30-R
Subtotal (1 unit)
$2.98(exc. GST)
$2.98/unit
In Stock
ETA 1658 Thermal Circuit Breaker - 1-Pole, Panel, 5A Current Rating, 25 A, 250V ac, 28 V dc
  • RS Stock No. 273-0854
  • Mfr. Part No. 1658-G21-02-P10-5A
Subtotal (1 unit)
$12.97(exc. GST)
$12.97/unit
In Stock
RS PRO 3A Violet Car Fuse, 32V dc
  • RS Stock No. 563-740
Subtotal (1 pack of 10 units)
$15.45(exc. GST)
$1.545/unit
In Stock
Phoenix Contact CBM Electronic Circuit Breaker 10A 24V, DIN Rail Type E
  • RS Stock No. 890-3806
  • Mfr. Part No. 2905744
Subtotal (1 unit)
$678.57(exc. GST)
$678.57/unit
Being discontinued
RS PRO 10A F Glass Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 563-643
Subtotal (1 pack of 10 units)
$8.12(exc. GST)
$0.812/unit
In Stock
Siemens 10A F Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 203-2062
  • Mfr. Part No. 3NW6003-1
Subtotal (1 pack of 10 units)
$89.12(exc. GST)
$8.912/unit
In Stock
Littelfuse 10A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 769-0017
  • Mfr. Part No. 0312010.HXP
Subtotal (1 pack of 10 units)
$7.16(exc. GST)
$0.716/unit
In Stock
Littelfuse 5A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 769-0089
  • Mfr. Part No. 0312005.HXP
Subtotal (1 pack of 10 units)
$5.92(exc. GST)
$0.592/unit
Temporarily out of stock
TE Connectivity 0.5 to 50 A W23 Thermal Circuit Breaker - 1-Pole, Direct, 25A Current Rating, 1000 A, 240V ac, 50 V dc
  • RS Stock No. 782-0873
  • Mfr. Part No. W23-X1A1G-25
Subtotal (1 unit)
$69.48(exc. GST)
$69.48/unit
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