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

48400 Products showing for Fuses & Circuit Breakers

1 of 999+
Temporarily out of stock
SIBA 315mA FF Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 736-1412
  • Mfr. Part No. 70-172-40/0.315A
Subtotal (1 unit)
TWD227.00(exc. GST)
TWD227.00/unit
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
Currently unavailable
Mersen 5A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 816-8955
  • Mfr. Part No. Z090550
Subtotal (1 pack of 10 units)
TWD167.00(exc. GST)
TWD16.70/unit
In Stock
RS PRO 5A T Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 610-9816
Subtotal (1 pack of 10 units)
TWD188.00(exc. GST)
TWD18.80/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
Being discontinued
RS PRO 4A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-542
Subtotal (1 pack of 10 units)
TWD121.00(exc. GST)
TWD12.10/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 10A F Ceramic Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 541-4561
  • Mfr. Part No. 0216010.MXP
Subtotal (1 pack of 10 units)
TWD455.00(exc. GST)
TWD45.50/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
Europa EUC1P EUC1P Miniature Circuit Breaker, 1-Pole, 16A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6507
  • Mfr. Part No. EUC1P16C
Subtotal (1 unit)
TWD573.00(exc. GST)
TWD573.00/unit
In Stock
Littelfuse 10A Red Car Fuse, 32V dc
  • RS Stock No. 787-4101
  • Mfr. Part No. 0287010.PXCN
Subtotal (1 pack of 10 units)
TWD93.00(exc. GST)
TWD9.30/unit
Temporarily out of stock
Eaton 6.3A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 849-5645
  • Mfr. Part No. GMC-6-3-R
Subtotal (1 unit)
TWD206.00(exc. GST)
TWD206.00/unit
Temporarily out of stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 20A, Type B, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3168
  • Mfr. Part No. A9F53120
Subtotal (1 unit)
TWD1,032.00(exc. GST)
TWD1,032.00/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
In Stock
Mersen 4A GG Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 247-2910
  • Mfr. Part No. T302789 / FR10GG69V4
Subtotal (1 box of 10 units)
TWD3,003.00(exc. GST)
TWD3,003.00/box
In Stock
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 2-Pole, 10A, Type D, 14 kA Breaking Capacity
  • RS Stock No. 219-9145
  • Mfr. Part No. M9F23210
Subtotal (1 unit)
TWD5,966.00(exc. GST)
TWD5,966.00/unit
In Stock
Mersen 16A FF Ceramic Cartridge Fuse, 14 x 51 mm
  • RS Stock No. 136-0573
  • Mfr. Part No. E1017202 / FR14GR69V16
Subtotal (1 unit)
TWD387.00(exc. GST)
TWD387.00/unit
In Stock
RS PRO Yellow Car Fuse, 32V dc
  • RS Stock No. 563-762
Subtotal (1 pack of 10 units)
TWD146.00(exc. GST)
TWD14.60/unit
In Stock
SIBA 80A White Car Fuse, 80V dc
  • RS Stock No. 161-1820
  • Mfr. Part No. 9005805.80
Subtotal (1 box of 20 units)
TWD3,436.00(exc. GST)
TWD171.80/unit
In Stock
RS Better World
Siemens SENTRON 5SY Miniature Circuit Breaker, 2-Pole, 16A, Type B, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 232-2319
  • Mfr. Part No. 5SY6216-6
Subtotal (1 unit)
TWD2,175.00(exc. GST)
TWD2,175.00/unit
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