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
Earth & Lightning Protection
Fuse Holders & Accessories
Fuses

49235 Products showing for Fuses & Circuit Breakers

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In Stock
SIBA 2A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3309
  • Mfr. Part No. 70-007-65/2A
Subtotal (1 pack of 10 units)
TWD238.00(exc. GST)
TWD23.80/unit
In Stock
ABB FH200 Series Residual Current Circuit Breaker, 25A, 2-Pole, 30 mA, Type AC, 1 kA 230V ac
  • RS Stock No. 186-3455
  • Mfr. Part No. 2CSF202002R1250 FH202 AC-25/0,03
Subtotal (1 unit)
TWD2,470.00(exc. GST)
TWD2,470.00/unit
In Stock
Legrand 10A F Ceramic Cartridge Fuse, 8.5 x 32 mm
  • RS Stock No. 293-8193
  • Mfr. Part No. 0 123 10
Subtotal (1 pack of 10 units)
TWD1,397.00(exc. GST)
TWD139.70/unit
In Stock
Littelfuse 1A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 769-0120
  • Mfr. Part No. 0312001.HXP
Subtotal (1 pack of 10 units)
TWD144.00(exc. GST)
TWD14.40/unit
In Stock
ETA Thermal Overcurrent Circuit Breakers 2-5700 Thermal Circuit Breaker -, 7A Current Rating 1-Pole, Panel
  • RS Stock No. 405-9135
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-7A
Subtotal (1 unit)
TWD1,088.00(exc. GST)
TWD1,088.00/unit
In Stock
Littelfuse 15A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 769-0057
  • Mfr. Part No. 0314015.HXP
Subtotal (1 pack of 10 units)
TWD537.00(exc. GST)
TWD53.70/unit
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 3-Pole, 25A, Type C, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 383-2147
  • Mfr. Part No. 5SY4325-7
Subtotal (1 unit)
TWD6,921.00(exc. GST)
TWD6,921.00/unit
In Stock
SIBA 4A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3315
  • Mfr. Part No. 70-007-65/4A
Subtotal (1 pack of 10 units)
TWD250.00(exc. GST)
TWD25.00/unit
In Stock
RS PRO 6.3A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 177-8098
Subtotal (1 pack of 5 units)
TWD375.00(exc. GST)
TWD75.00/unit
Temporarily out of stock
WJ Furse Copper Earth Bar L. 500 mm x W. 90mm x H. 90 mm 8 Ways
  • RS Stock No. 124-2497
  • Mfr. Part No. 7TCA083670R0745 LK245-8
Subtotal (1 unit)
TWD10,024.00(exc. GST)
TWD10,024.00/unit
In Stock
Littelfuse 6.3A M Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 769-0067
  • Mfr. Part No. 023406.3MXP
Subtotal (1 pack of 25 units)
TWD960.00(exc. GST)
TWD38.40/unit
Currently unavailable
Schurter 3A F Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 865-7761
  • Mfr. Part No. 0034.3880
Subtotal (1 pack of 10 units)
TWD747.00(exc. GST)
TWD74.70/unit
Temporarily out of stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 25A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3528
  • Mfr. Part No. A9F55225
Subtotal (1 unit)
TWD5,001.00(exc. GST)
TWD5,001.00/unit
In Stock
Eaton 1A3400 Brass, Panel Fuse Clip for 13/32 in Cartridge Fuse
  • RS Stock No. 233-0572
  • Mfr. Part No. BK-1A3400-12-R
Subtotal (1 pack of 10 units)
TWD347.00(exc. GST)
TWD34.70/unit
Temporarily out of stock
Eaton 6.3A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 171-6768
  • Mfr. Part No. S505H-6.3-R
Subtotal (1 pack of 5 units)
TWD310.00(exc. GST)
TWD62.00/unit
In Stock
ABB 250V, 415 V ON-OFF Switch Circuit Trip for use with Push Buttons and Indicator Lights
  • RS Stock No. 231-9543
  • Mfr. Part No. 2CCA703005R0001 2F E211-16-20
Subtotal (1 box of 1 unit)
TWD870.00(exc. GST)
TWD870.00/box
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 3A, Type C, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 622-0020
  • Mfr. Part No. 5SY4103-7
Subtotal (1 unit)
TWD1,986.00(exc. GST)
TWD1,986.00/unit
In Stock
RS PRO 3.5A T Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 177-8132
Subtotal (1 pack of 20 units)
TWD302.00(exc. GST)
TWD15.10/unit
In Stock
Littelfuse Non-Resettable Fuse 4A, 125 V ac, 125V dc
  • RS Stock No. 541-3669
  • Mfr. Part No. 0452004.MRL
Subtotal (1 pack of 10 units)
TWD918.00(exc. GST)
TWD91.80/unit
In Stock
Electro PJP AdaBV140 Adapter for use with Screw Terminal Block
  • RS Stock No. 275-3341
  • Mfr. Part No. AdaBV140-N
Subtotal (1 unit)
TWD200.00(exc. GST)
TWD200.00/unit
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