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

Fuses - PCB
Fuses - PCB

48621 Products showing for Fuses & Circuit Breakers

2341 / 999+
Stocked by manufacturer
ABB SU200 M Miniature Circuit Breaker, 2-Pole, 32A, Type Z, 440V ac AC, 96 V dc DC, 15 kA Breaking Capacity
  • RS Stock No. 201-179
  • Mfr. Part No. 2CDS272337R0538
Subtotal (1 unit)
MYR1,728.68
MYR1,728.68/unit
Stocked by manufacturer
Siemens, SENTRON, 3VA6 Molded Case Circuit Breaker 4-Pole 1kA, Breaking Capacity 100 kA
  • RS Stock No. 249-187
  • Mfr. Part No. 3VA6610-7KT42-0AA0
Subtotal (1 unit)
MYR65,181.60
MYR65,181.60/unit
Stocked by manufacturer
Siemens Alpha Base for use with ALPHA 630 DIN
  • RS Stock No. 629-093
  • Mfr. Part No. 8GK9901-0KA42
Subtotal (1 unit)
MYR1,143.75
MYR1,143.75/unit
Stocked by manufacturer
Schneider Electric, ComPact, ComPacT NSX Molded Case Circuit Breaker 3-Pole 100A, Breaking Capacity 100 kA
  • RS Stock No. 260-8035
  • Mfr. Part No. C25W35E100
Subtotal (1 unit)
MYR21,127.20
MYR21,127.20/unit
Stocked by manufacturer
Siemens SENTRON 5SY8 Miniature Circuit Breaker, 4-Pole, 3A, Type C, 400V ac AC, 60 V dc DC, 50 kA Breaking Capacity
  • RS Stock No. 610-352
  • Mfr. Part No. 5SY8403-7
Subtotal (1 unit)
MYR1,484.68
MYR1,484.68/unit
Stocked by manufacturer
Siemens, SENTRON, 3VA5 Molded Case Circuit Breaker 4-Pole 50A, Breaking Capacity 10 kA, Cable, Panel
  • RS Stock No. 148-447
  • Mfr. Part No. 3VA5150-6ED41-0AA0
Subtotal (1 unit)
MYR2,740.04
MYR2,740.04/unit
Stocked by manufacturer
ABB Emax2 SACE Emax 2 Electronic Circuit Breaker 2000A 690V, 4 channels Ekip Dip LSI Release
  • RS Stock No. 259-4752
  • Mfr. Part No. 1SDA073032R1
Subtotal (1 unit)
MYR64,583.84
MYR64,583.84/unit
Stocked by manufacturer
Eaton IZMX IZMX/INX Electronic Circuit Breaker 4000A 690V, 3 channels
  • RS Stock No. 132-708
  • Mfr. Part No. 183741 IZMX40N3-V40W-1
Subtotal (1 unit)
MYR149,490.96
MYR149,490.96/unit
Stocked by manufacturer
Eaton xEffect xEffect - AZ MCB Miniature Circuit Breaker, 2-Pole, 40A, Type B, 400V ac AC, 25 kA Breaking Capacity
  • RS Stock No. 243-230
  • Mfr. Part No. 174496 AZ-2-B40
Subtotal (1 unit)
MYR1,105.72
MYR1,105.72/unit
Stocked by manufacturer
Eaton 250A NH Fuse 63 x 40 x 135 mm 400V ac
  • RS Stock No. 254-762
  • Mfr. Part No. 250NHG1BI-400
Subtotal (1 pack of 3 units)
MYR169.71
MYR169.71/pack
Stocked by manufacturer
Better World
Siemens, SENTRON, 3VA2 Molded Case Circuit Breaker 3-Pole 100A, Breaking Capacity 55 kA, Fixed
  • RS Stock No. 270-3535
  • Mfr. Part No. 3VA2010-5HM36-0AA0
Subtotal (1 unit)
MYR4,591.31
MYR4,591.31/unit
Temporarily out of stock
Eaton 10A 6.3 x 32 mm, Panel Cartridge Fuse Block, 250V ac
  • RS Stock No. 233-0610
  • Mfr. Part No. BK4-S-4001-1-R
Subtotal (1 box of 4000 units)
MYR22,876.00
MYR22,876.00/box
Stocked by manufacturer
Siemens SENTRON 5SJ4315 Miniature Circuit Breaker, 3-Pole, 2A, Type D, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 299-943
  • Mfr. Part No. 5SJ4315-8HG42
Subtotal (1 unit)
MYR1,774.90
MYR1,774.90/unit
Stocked by manufacturer
Eaton 355A Tag Fuse 205 x 61 x 61 mm 1000V, 205 mm
  • RS Stock No. 282-6240
  • Mfr. Part No. PV-355A-2XL
Subtotal (1 unit)
MYR2,301.71
MYR2,301.71/unit
Stocked by manufacturer
Eaton, ZSD-Z2, ZSD-Z2/5/SHS Molded Case Circuit Breaker 5-Pole
  • RS Stock No. 230-862
  • Mfr. Part No. 113081 ZSD-Z2/5/SHS
Subtotal (1 unit)
MYR1,868.54
MYR1,868.54/unit
Stocked by manufacturer
ABB S802S Miniature Circuit Breaker, 2-Pole, 16A, UC-K, 500 V dc DC, 50 kA Breaking Capacity
  • RS Stock No. 140-479
  • Mfr. Part No. 2CCS862001R1467
Subtotal (1 unit)
MYR1,362.81
MYR1,362.81/unit
Stocked by manufacturer
Legrand 25A Cartridge Fuse, 59 x 79 mm
  • RS Stock No. 266-3181
  • Mfr. Part No. 0 163 18
Subtotal (1 box of 10 units)
MYR1,432.10
MYR1,432.10/box
Stocked by manufacturer
Siemens SENTRON 5SP4 Miniature Circuit Breaker, 4-Pole, 100A, Type B, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 210-3396
  • Mfr. Part No. 5SP4491-6
Subtotal (1 unit)
MYR2,353.10
MYR2,353.10/unit
Temporarily out of stock
Sensata / Airpax Airpax AP12 Thermal Circuit Breaker - 2-Pole, 5A Current Rating
  • RS Stock No. 275-0169
  • Mfr. Part No. AP12-1-61-502
Subtotal (1 unit)
MYR4,851.99
MYR4,851.99/unit
In Stock
Nidec Components 4 A Resettable Fuse, 30 V
  • RS Stock No. 637-6482
  • Mfr. Part No. PRCP-R400-0-99
Subtotal (1 pack of 5 units)
MYR23.16
MYR4.632/unit
1
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