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

37068 Products showing for Fuses & Circuit Breakers

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3 of 999+
In Stock
Eaton 4A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 537-1329
  • Mfr. Part No. S506-4-R
Subtotal (1 pack of 10 units)
$4.93(exc. GST)
$0.493/unit
In Stock
Clipsal Electrical MAX9 MX9MC Miniature Circuit Breaker, 1-Pole, 2A, C Curve, 415V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 282-2923
  • Mfr. Part No. MX9MC102
Subtotal (1 unit)
$8.18(exc. GST)
$8.18/unit
In Stock
Eaton 25A gG/gL Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 229-266
  • Mfr. Part No. C10G25 CYLINDRICAL FUSE 10 x 38 25A GG 500V AC
Subtotal (1 pack of 10 units)
$22.25(exc. GST)
$22.25/pack
Limited stock
TE Connectivity 0.5 to 50 A W23 Thermal Circuit Breaker -, 40A Current Rating 1-Pole, Direct
  • RS Stock No. 782-7953
  • Mfr. Part No. W23-X1A1G-40
Subtotal (1 unit)
$85.46(exc. GST)
$85.46/unit
In Stock
Schneider Electric Acti9 IC60N Miniature Circuit Breaker, 1-Pole, 20A, Type C, 240V ac AC, 72 V dc DC, 6 kA Breaking
  • RS Stock No. 230-6653
  • Mfr. Part No. A9F44120
Subtotal (1 unit)
$19.17(exc. GST)
$19.17/unit
In Stock
Littelfuse 60A Yellow Car Fuse, 32V dc
  • RS Stock No. 431-6719
  • Mfr. Part No. 153.5631.5601
Subtotal (1 pack of 5 units)
$29.36(exc. GST)
$5.872/unit
In Stock
RS PRO 3A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 668-6007
Subtotal (1 pack of 10 units)
$10.07(exc. GST)
$1.007/unit
In Stock
Schneider Electric Acti9 IC60N Miniature Circuit Breaker, 1-Pole, 1A, Type C, 240V ac AC, 72 V dc DC, 240 Breaking
  • RS Stock No. 435-913
  • Mfr. Part No. A9F44101
Subtotal (1 unit)
$30.78(exc. GST)
$30.78/unit
In Stock
ABB SN201 Miniature Circuit Breaker, 1-Pole, 6A, Type D, 230V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 289-1629
  • Mfr. Part No. 2CSS255102R0061
Subtotal (1 unit)
$87.93(exc. GST)
$87.93/unit
Stocked by manufacturer
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 15A, Type C, 400V ac AC, 60 V dc DC, 15 kA Breaking Capacity
  • RS Stock No. 610-653
  • Mfr. Part No. 5SY4118-7
Subtotal (1 unit)
$70.74(exc. GST)
$70.74/unit
In Stock
Eaton 1A 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)
$5.55(exc. GST)
$0.555/unit
In Stock
RS Better World
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 2A, Type D, 253V ac AC, 72 V dc DC, 6
  • RS Stock No. 527-9425
  • Mfr. Part No. 2CDS251001R0021 S201-D2
Subtotal (1 unit)
$50.22(exc. GST)
$50.22/unit
In Stock
RS Better World
Schneider Electric Acti9 Acti9 PV Miniature Circuit Breaker, 2-Pole, 20A, Type C, 500 V dc DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3212
  • Mfr. Part No. A9N61532
Subtotal (1 unit)
$167.36(exc. GST)
$167.36/unit
In Stock
Phoenix Contact Surge Protector, 30 A, DIN Rail
  • RS Stock No. 135-7118
  • Mfr. Part No. 2906848
Subtotal (1 unit)
$46.49(exc. GST)
$46.49/unit
In Stock
Siemens 200A Centred Tag Fuse NH3 500V ac
  • RS Stock No. 203-2022
  • Mfr. Part No. 3NA3340
Subtotal (1 pack of 3 units)
$262.941(exc. GST)
$87.647/unit
In Stock
RS PRO Miniature Circuit Breaker, 2-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0186
Subtotal (1 unit)
$7.48(exc. GST)
$7.48/unit
In Stock
Eaton 40A gG/gL Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 228-670
  • Mfr. Part No. C14G40
Subtotal (1 pack of 10 units)
$38.76(exc. GST)
$38.76/pack
In Stock
TE Connectivity W58 Thermal Circuit Breaker -, 25A Current Rating 1-Pole, Direct
  • RS Stock No. 782-7990
  • Mfr. Part No. W58-XB1A4A-25
Subtotal (1 unit)
$25.89(exc. GST)
$25.89/unit
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 6A, Type D, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 772-1259
  • Mfr. Part No. 5SY4106-8
Subtotal (1 unit)
$131.66(exc. GST)
$131.66/unit
In Stock
Eaton 20A gG/gL Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 229-101
  • Mfr. Part No. C10G20 CYLINDRICAL FUSE 10 x 38 20A GG 500V AC
Subtotal (1 pack of 10 units)
$21.15(exc. GST)
$21.15/pack
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