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

47878 Products showing for Fuses & Circuit Breakers

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
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
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
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
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
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
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
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
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, 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
Last RS stock
RS PRO 25A Bolted Tag Fuse A2 690V ac, 73 mm
  • RS Stock No. 221-3711
Subtotal (1 bag of 5 units)
TWD1,388.00(exc. GST)
TWD1,388.00/bag
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)
TWD293.00(exc. GST)
TWD58.60/unit
In Stock
ABB 250V, 415 V ON-OFF Switch Circuit Trip for use with Push Buttons and Indicator Lights
  • RS Stock No. 231-9543
  • Mfr. Part No. 2CCA703005R0001 2F E211-16-20
Subtotal (1 box of 1 unit)
TWD774.00(exc. GST)
TWD774.00/box
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 xEffect xEffect Miniature Circuit Breaker, 2-Pole, 3A, Type D, 415V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3560
  • Mfr. Part No. 278773 FAZ-D3/2
Subtotal (1 unit)
TWD3,085.00(exc. GST)
TWD3,085.00/unit
In Stock
RS PRO 250mA T Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 668-6060
Subtotal (1 pack of 10 units)
TWD86.00(exc. GST)
TWD8.60/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
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
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
SIBA 10A T Glass Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 418-9618
  • Mfr. Part No. 70-059-61/10A
Subtotal (1 pack of 10 units)
TWD1,038.00(exc. GST)
TWD103.80/unit
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