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

33502 Products showing for Fuses & Circuit Breakers

202 of 999+
In Stock
Eaton PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 852-7196
  • Mfr. Part No. PCC-2-R
Each
PHP382.34(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3907
  • Mfr. Part No. 3VA2063-8JQ42-0AA0
Each
PHP150,077.40(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3899
  • Mfr. Part No. 3VA2063-8HN46-0AA0
Each
PHP88,581.09(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller 3 Phase Busbar, 600V, 26.4mm Pitch
  • RS Stock No. 123-045
  • Mfr. Part No. 171139 Z-BB/UL25/3P1MU+AUX/48
Each
PHP14,270.62(exc. VAT)
Temporarily out of stock
Eaton 560A Tag Fuse, 660V ac, 133/184mm
  • RS Stock No. 260-712
  • Mfr. Part No. TTM560
Each
PHP19,890.94(exc. VAT)
Temporarily out of stock
Lovato P1RD MCCB, 63A, 2 Pole, 300mA, Type A, 230V ac
  • RS Stock No. 276-5667
  • Mfr. Part No. P1RD2P63A300
Each
PHP19,920.47(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-917
  • Mfr. Part No. 3VA5215-5GC41-0AA0
Each
PHP117,244.89(exc. VAT)
Temporarily out of stock
Lovato Terminal for use with P1MB
  • RS Stock No. 825-6144
  • Mfr. Part No. P1X9202
Each
PHP754.51(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller IZMX/INX Circuit breaker 3P 3.2kA, Breaking Capacity 105 kA, Fixed Mount
  • RS Stock No. 246-498
  • Mfr. Part No. 183724 IZMX40H3-V32F-1
Each
PHP1,423,111.19(exc. VAT)
Unavailable
Schneider Electric, NSX MCCB 4P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 219-8394
  • Mfr. Part No. LV433835
Each
PHP176,206.98(exc. VAT)
Temporarily out of stock
Schneider Electric Masterpact Control Unit for use with Masterpact NW Series Circuit Breaker
  • RS Stock No. 247-1899
  • Mfr. Part No. 48363
Each
PHP453,414.08(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-7757
  • Mfr. Part No. C16F3MA150
Each
PHP66,802.25(exc. VAT)
Being discontinued
RS PRO PC Board Non Resettable Fuse, Axial 3A, 250V ac
  • RS Stock No. 764-9558
Each (In a Pack of 10)
PHP42.961(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 20 Way
  • RS Stock No. 339-637
  • Mfr. Part No. SEA9DE40
Each
PHP15,970.75(exc. VAT)
Last RS stock
Socomec 1, 3 Phase Surge Arrester, 75kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 252-3593
  • Mfr. Part No. 49810432
Each
PHP103,992.13(exc. VAT)
In Stock
Bourns 50A Tag Fuse, 66mm, 170V dc, 24.1mm
  • RS Stock No. 254-4231
  • Mfr. Part No. PF-NT5-50
Each
PHP1,800.69(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 4P, 300mA Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-874
  • Mfr. Part No. 2CDS274347R0117
Each
PHP57,674.13(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 4P 800A, Breaking Capacity 30 kA
  • RS Stock No. 354-525
  • Mfr. Part No. C080H4WM
Each
PHP278,947.97(exc. VAT)
In Stock
RS PRO 40A Bolted Tag Fuse, 350 V dc, 690V ac, 63.5mm
  • RS Stock No. 221-3658
Each (In a Pack of 5)
PHP1,013.158(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 16A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 245-024
  • Mfr. Part No. A9D06816
Each
PHP14,278.00(exc. VAT)
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