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

48671 Products showing for Fuses & Circuit Breakers

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1 of 999+
In Stock
RS PRO 4A FF Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 721-1579
Subtotal (1 pack of 10 units)
TWD632.00(exc. GST)
TWD63.20/unit
In Stock
RS Better World
Siemens SENTRON 5SY Miniature Circuit Breaker, 1-Pole, 2A, Type A, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 232-2282
  • Mfr. Part No. 5SY4102-5
Subtotal (1 unit)
TWD2,145.00(exc. GST)
TWD2,145.00/unit
In Stock
Littelfuse 12A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 787-4299
  • Mfr. Part No. 0326012.MXP
Subtotal (1 pack of 5 units)
TWD381.00(exc. GST)
TWD76.20/unit
In Stock
ABB 16 Configured for Split Load Steel Consumer Unit, 100A, BS EN 61009, BS EN 60439-3, BS EN 60898 IP30 Housemaster
  • RS Stock No. 453-996
  • Mfr. Part No. 1SKB118142C6001
Subtotal (1 unit)
TWD10,603.00(exc. GST)
TWD10,603.00/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)
TWD1,286.00(exc. GST)
TWD128.60/unit
In Stock
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 1-Pole, 20A, Type C, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 211-2359
  • Mfr. Part No. M9F22120
Subtotal (1 unit)
TWD1,117.00(exc. GST)
TWD1,117.00/unit
In Stock
RS Better World
ABB ComPact Home SH200 Miniature Circuit Breaker, 2-Pole, 16A, Type C, 400V ac AC, 400 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 231-9656
  • Mfr. Part No. 2CDS212001R0164 SH202-C 16
Subtotal (1 box of 1 unit)
TWD1,620.00(exc. GST)
TWD1,620.00/box
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)
TWD3,048.00(exc. GST)
TWD3,048.00/unit
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 3-Pole, 32A, Type D, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 772-1385
  • Mfr. Part No. 5SY4332-8
Subtotal (1 unit)
TWD5,547.00(exc. GST)
TWD5,547.00/unit
In Stock
ETA Thermal Overcurrent Circuit Breakers 2-5700 Thermal Circuit Breaker - 1-Pole, Panel, 7A Current Rating, 7 A, 250V
  • RS Stock No. 405-9135
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-7A
Subtotal (1 unit)
TWD931.00(exc. GST)
TWD931.00/unit
In Stock
RS PRO 10A T Ceramic Cartridge Fuse, 5.2 x 20 mm
  • RS Stock No. 563-592
Subtotal (1 pack of 10 units)
TWD162.00(exc. GST)
TWD16.20/unit
Limited stock
Schneider Electric 50A Rail Mount Fuse Holder, 1P-Pole, 690V ac
  • RS Stock No. 482-897
  • Mfr. Part No. DF141
Subtotal (1 unit)
TWD624.00(exc. GST)
TWD624.00/unit
Temporarily out of stock
Wickmann 5A F Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 174-0256
  • Mfr. Part No. 0312005.MXP
Subtotal (1 box of 1000 units)
TWD10,846.00(exc. GST)
TWD10,846.00/box
In Stock
SIBA 50A NH Fuse NH000 500V ac
  • RS Stock No. 421-693
  • Mfr. Part No. 20-000-13/50E1
Subtotal (1 pack of 3 units)
TWD744.90(exc. GST)
TWD248.30/unit
In Stock
Legrand 10A Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 180-6111
  • Mfr. Part No. 0 130 10
Subtotal (1 box of 10 units)
TWD902.00(exc. GST)
TWD90.20/unit
In Stock
Littelfuse 6.3A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-4713
  • Mfr. Part No. 021506.3MXP
Subtotal (1 pack of 10 units)
TWD416.00(exc. GST)
TWD41.60/unit
In Stock
Littelfuse 12A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 787-4303
  • Mfr. Part No. 0314012.HXP
Subtotal (1 pack of 5 units)
TWD156.00(exc. GST)
TWD31.20/unit
Temporarily out of stock
ABB F200 Series Residual Current Circuit Breaker, 125A, 4-Pole, 500 mA, Type A, 1 kA 400V ac
  • RS Stock No. 177-5098
  • Mfr. Part No. 2CSF204201R4950
Subtotal (1 unit)
TWD104,967.00(exc. GST)
TWD104,967.00/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 2A, Type C, 100V, 12 V, 133 V, 220 V, 240 V, 60 V AC,
  • RS Stock No. 791-3284
  • Mfr. Part No. A9F54102
Subtotal (1 unit)
TWD1,243.00(exc. GST)
TWD1,243.00/unit
In Stock
SIBA 250mA T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 783-3270
  • Mfr. Part No. 70-007-65/0.25A
Subtotal (1 pack of 10 units)
TWD201.00(exc. GST)
TWD20.10/unit
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