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

33476 Products showing for Fuses & Circuit Breakers

106 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 200A, Fixed Mount
  • RS Stock No. 260-8049
  • Mfr. Part No. C25W3TM200
Each
PHP203,237.55(exc. VAT)
Temporarily out of stock
Siemens SENTRON 3 Phase Busbar
  • RS Stock No. 187-5203
  • Mfr. Part No. 5ST3740-2
Each
PHP11,486.43(exc. VAT)
Temporarily out of stock
Siemens SENTRON Auxiliary Switch Kit for use with 3VA5
  • RS Stock No. 272-0230
  • Mfr. Part No. 3VA9477-0GX10
Each
PHP5,315.05(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 2P, 20A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-405
  • Mfr. Part No. 2CCS862017R0487
Each
PHP17,142.33(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3605
  • Mfr. Part No. 3VA2010-8HM42-0AA0
Each
PHP120,029.05(exc. VAT)
In Stock
Eaton 56A Bolted Tag Fuse, 690 V, 700 V, 62mm
  • RS Stock No. 182-1569
  • Mfr. Part No. 56ET
Each
PHP1,094.15(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1.6kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 429-184
  • Mfr. Part No. C160N32EFM
Each
PHP1,037,434.28(exc. VAT)
In Stock
Schneider Electric, EasyPact MCCB 1P 15A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 269-6077
  • Mfr. Part No. EZC100H1015
Each
PHP11,840.62(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 70A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-534
  • Mfr. Part No. 3VA5270-6EC61-0AA0
Each
PHP65,759.88(exc. VAT)
In Stock
nVent ERICO Surge Protector, 35kA, 1500V ac, DIN Rail Mount
  • RS Stock No. 277-6232
  • Mfr. Part No. DT2C32011R
Each
PHP11,973.54(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Compact Nsx, Easypact Cvs Cable Connector for use with 1 Cable 35 mm2 →300 mm2
  • RS Stock No. 221-1227
  • Mfr. Part No. LV432479
Each
PHP10,999.26(exc. VAT)
Temporarily out of stock
Hager Hager NKN Circuit Breaker, 2P, 10A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-793
  • Mfr. Part No. NKN210
Each
PHP10,229.01(exc. VAT)
Temporarily out of stock
Siemens SENTRON Sliding Contacts for use with 3VA12
  • RS Stock No. 275-741
  • Mfr. Part No. 3VA9258-0VF30
Each
PHP14,588.87(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 13A Current Rating, 2P Poles, 10mA Trip Sensitivity, SENTRON Range
  • RS Stock No. 211-9595
  • Mfr. Part No. 5SU1154-6KK13
Each
PHP11,894.17(exc. VAT)
Currently unavailable
RS PRO SMD Non-Resettable Surface Mount Fuse 8A, 63V
  • RS Stock No. 252-2214
Each (On a Tape of 4000)
PHP8.937(exc. VAT)
Temporarily out of stock
Lovato 32A Rail Mount Fuse Holder, 1P, 1kV
  • RS Stock No. 216-8277
  • Mfr. Part No. FB01D1PL
Each
PHP1,191.84(exc. VAT)
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 20 kA, Fixed Mount
  • RS Stock No. 232-0085
  • Mfr. Part No. 1SDA054325R1 T5N400 FF PR221-LS 400A
Each
PHP86,353.56(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 16A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9628
  • Mfr. Part No. 3VA10963ED360AA0
Each
PHP23,567.00(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric 230V ac Overload Release Circuit Trip for use with C120 Series, C60 Series, ID Residual Current
  • RS Stock No. 776-2938
  • Mfr. Part No. A9N26500
Each
PHP14,933.97(exc. VAT)
In Stock
Eaton 25A Bolted Tag Fuse, 240V ac, 35mm
  • RS Stock No. 181-8759
  • Mfr. Part No. STD25
Each
PHP302.23(exc. VAT)
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