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

48180 Products showing for Fuses & Circuit Breakers

1 of 999+
In 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
In Stock
Eaton 25A F Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 852-7421
  • Mfr. Part No. ABC-25-R
Subtotal (1 unit)
TWD161.00(exc. GST)
TWD161.00/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
Temporarily out of stock
Better World
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 1-Pole, 13A, Type D, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 211-2388
  • Mfr. Part No. M9F23113
Subtotal (1 unit)
TWD1,907.00(exc. GST)
TWD1,907.00/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
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
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)
TWD2,221.00(exc. GST)
TWD2,221.00/unit
In Stock
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
Siemens 125A Centred Tag Fuse NH00 690V ac
  • RS Stock No. 396-348
  • Mfr. Part No. 3NE8022-1
Subtotal (1 pack of 3 units)
TWD9,239.10(exc. GST)
TWD3,079.70/unit
Temporarily out of stock
Littelfuse Non-Resettable Fuse 160 mA, 277 V ac/dc
  • RS Stock No. 820-7221
  • Mfr. Part No. 0305.160H
Subtotal (1 unit)
TWD640.00(exc. GST)
TWD640.00/unit
In Stock
Better World
Schneider Electric Acti9 Acti9 1 Phase Busbar, 415 V ac, 18 mm Pitch
  • RS Stock No. 776-2718
  • Mfr. Part No. A9XPH124
Subtotal (1 unit)
TWD1,242.00(exc. GST)
TWD1,242.00/unit
Stocked by manufacturer
ABB S200 2CDS2531 Miniature Circuit Breaker, 3-Pole, 40A, Type C, 440V ac AC, 110 V dc DC
  • RS Stock No. 100-093
  • Mfr. Part No. 2CDS253103R0404
Subtotal (1 box of 1 unit)
TWD4,609.00(exc. GST)
TWD4,609.00/box
In Stock
Europa EUC1P EUC1P Miniature Circuit Breaker, 1-Pole, 6A, Type B, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6465
  • Mfr. Part No. EUC1P6B
Subtotal (1 unit)
TWD635.00(exc. GST)
TWD635.00/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)
TWD1,255.00(exc. GST)
TWD125.50/unit
In Stock
Contactum 2 Steel Consumer Unit, 63A, BS EN 61439-3 IP4X Defender
  • RS Stock No. 184-9102
  • Mfr. Part No. DD026MS
Subtotal (1 unit)
TWD2,432.00(exc. GST)
TWD2,432.00/unit
In Stock
Eaton PXF-A Series Residual Current Circuit Breaker, 40A, 3-Pole, 30 mA, Type A, 500 A 400V ac
  • RS Stock No. 490-466
  • Mfr. Part No. 236776 PXF-40/4/003-A
Subtotal (1 unit)
TWD1,860.00(exc. GST)
TWD1,860.00/unit
In Stock
Eaton xPole PXL Miniature Circuit Breaker, 3-Pole, 32A, Type C, 400V ac AC, 48 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 490-315
  • Mfr. Part No. 236429 PXL-C32/3
Subtotal (1 unit)
TWD1,748.00(exc. GST)
TWD1,748.00/unit
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 50A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6604
  • Mfr. Part No. EUC3P50C
Subtotal (1 unit)
TWD4,077.00(exc. GST)
TWD4,077.00/unit
Currently unavailable
Siemens 32A Rail Mount Fuse Holder for 10 x 38 mm, 3P-Pole, 690V
  • RS Stock No. 225-5421
  • Mfr. Part No. 3NW7033
Subtotal (1 unit)
TWD1,139.00(exc. GST)
TWD1,139.00/unit
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