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

49530 Products showing for Fuses & Circuit Breakers

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1 of 999+
Stocked by manufacturer
RS Better World
Siemens SENTRON 3VA1 Miniature Circuit Breaker, 1-Pole, 20A, 415V ac AC, 125 V dc DC, 25 kA Breaking Capacity
  • RS Stock No. 224-7820
  • Mfr. Part No. 3VA1120-4ED16-0AA0
Subtotal (1 unit)
TWD10,111.00(exc. GST)
TWD10,111.00/unit
Stocked by manufacturer
Siemens Alpha Assembly Kit for use with Three and Four-Pole Circuit Breaker
  • RS Stock No. 216-4803
  • Mfr. Part No. 8GK4704-4KK13
Subtotal (1 unit)
TWD8,855.00(exc. GST)
TWD8,855.00/unit
Stocked by manufacturer
ABB 500A Tag Fuse 150 x 70 x 86 mm 690V
  • RS Stock No. 250-4480
  • Mfr. Part No. 1SCA022701R1340
Subtotal (1 unit)
TWD3,218.00(exc. GST)
TWD3,218.00/unit
Stocked by manufacturer
ABB, 1SDA05 Molded Case Circuit Breaker 4-Pole 630A, Fixed
  • RS Stock No. 250-4139
  • Mfr. Part No. 1SDA054409R1
Subtotal (1 unit)
TWD171,769.00(exc. GST)
TWD171,769.00/unit
In Stock
Legrand Vistop Vistop Miniature Circuit Breaker, 4-Pole, 32A, 400V ac AC, 5 kA Breaking Capacity
  • RS Stock No. 620-2909
  • Mfr. Part No. 0 225 02
Subtotal (1 unit)
TWD7,756.00(exc. GST)
TWD7,756.00/unit
Stocked by manufacturer
Siemens 8GB Door for use with Plug-In Terminal
  • RS Stock No. 211-6097
  • Mfr. Part No. 8GB5024-4KM
Subtotal (1 unit)
TWD5,726.00(exc. GST)
TWD5,726.00/unit
Temporarily out of stock
Eaton 315A Bolted Tag Fuse MMT 690V ac, 85 mm
  • RS Stock No. 182-1497
  • Mfr. Part No. 315MMT
Subtotal (1 unit)
TWD35,785.00(exc. GST)
TWD35,785.00/unit
Stocked by manufacturer
ABB 32A Tag Fuse 79 x 21 x 53 mm 500V
  • RS Stock No. 250-4359
  • Mfr. Part No. 1SCA022652R1090
Subtotal (3 units, in boxes of 3)
TWD1,342.00(exc. GST)
TWD1,342.00/box
Stocked by manufacturer
ABB, 1SDA05 Molded Case Circuit Breaker 3-Pole 400A, Fixed
  • RS Stock No. 250-4119
  • Mfr. Part No. 1SDA054385R1
Subtotal (1 unit)
TWD192,848.00(exc. GST)
TWD192,848.00/unit
In Stock
SIBA Non-Resettable Fuse 4A, 250V
  • RS Stock No. 736-8707
  • Mfr. Part No. 160016.4
Subtotal (10 units, in bags of 10)
TWD5,196.00(exc. GST)
TWD519.60/unit
In Stock
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 238-3321
  • Mfr. Part No. A9DS1616
Subtotal (1 unit)
TWD10,419.00(exc. GST)
TWD10,419.00/unit
Stocked by manufacturer
RS Better World
Siemens SENTRON 3VA1 Miniature Circuit Breaker, 4-Pole, 40A, 690V ac AC, 600 V dc DC, 36 kA Breaking Capacity
  • RS Stock No. 224-7853
  • Mfr. Part No. 3VA1140-4GF42-0AA0
Subtotal (1 unit)
TWD25,126.00(exc. GST)
TWD25,126.00/unit
In Stock
Schneider Electric Acti9 iC60N Miniature Circuit Breaker, 2-Pole, 25A, Type C, 100V, 12 V, 130 V, 220 V, 240 V, 380 V,
  • RS Stock No. 734-9144
  • Mfr. Part No. A9F77225
Subtotal (1 unit)
TWD3,422.00(exc. GST)
TWD3,422.00/unit
Stocked by manufacturer
ABB 160A Tag Fuse 125 x 30 x 60 mm 500V
  • RS Stock No. 250-4414
  • Mfr. Part No. 1SCA022697R6170
Subtotal (3 units, in boxes of 3)
TWD2,682.00(exc. GST)
TWD2,682.00/box
In Stock
Schneider Electric Acti9 iC60N Miniature Circuit Breaker, 1-Pole, 20A, Type C, 100V, 12 V, 130 V, 220 V, 230 V, 240 V,
  • RS Stock No. 734-9260
  • Mfr. Part No. A9F77620
Subtotal (1 unit)
TWD3,462.00(exc. GST)
TWD3,462.00/unit
Stocked by manufacturer
RS Better World
ABB, Tmax XT, 1SDA06 Molded Case Circuit Breaker 4-Pole 100A, Breaking Capacity 200 kA, Fixed
  • RS Stock No. 236-6536
  • Mfr. Part No. 1SDA068007R1 XT2V 160 Ekip LS/I 100A FF
Subtotal (1 unit)
TWD59,007.00(exc. GST)
TWD59,007.00/unit
Temporarily out of stock
Eaton 3 A Resettable Fuse, 6V
  • RS Stock No. 225-8272
  • Mfr. Part No. PTSLR12106V300
Subtotal (3000 units, on reels of 3000)
TWD35,129.00(exc. GST)
TWD35,129.00/reel
Currently unavailable
Schurter Non-Resettable Fuse 2A
  • RS Stock No. 216-4099
  • Mfr. Part No. 7010.1860.12
Subtotal (5 units, in packs of 5)
TWD1,535.00(exc. GST)
TWD307.00/unit
Stocked by manufacturer
RS Better World
Siemens SENTRON 5SV3xxx Series Residual Current Circuit Breaker, 80A, 4-Pole, 500 mA, Type B, 0.8 kA 400V ac
  • RS Stock No. 241-4454
  • Mfr. Part No. 5SV3747-5
Subtotal (1 unit)
TWD87,177.00(exc. GST)
TWD87,177.00/unit
Stocked by manufacturer
Siemens DIN Rail Circuit Trip
  • RS Stock No. 223-7676
  • Mfr. Part No. 5TT4476-2
Subtotal (1 unit)
TWD9,276.00(exc. GST)
TWD9,276.00/unit
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