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

89 of 999+
Temporarily out of stock
Lovato 32A Rail Mount Fuse Holder, 3P+N, 690V ac
  • RS Stock No. 216-8281
  • Mfr. Part No. FB01F3N
Each
PHP2,150.06(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 1P 25A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 345-307
  • Mfr. Part No. C10F1TM025
Each
PHP33,780.93(exc. VAT)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit, 278 → 632mm, 250A, Canalis Series
  • RS Stock No. 335-076
  • Mfr. Part No. KSB250SM428
Each
PHP122,646.94(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 20 Way, 250 A
  • RS Stock No. 339-644
  • Mfr. Part No. SEB36S24250
Each
PHP348,039.01(exc. VAT)
In Stock
ABB RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 201-6952
  • Mfr. Part No. 2CSR275080R1065 DS201 M B6 AC30
Each
PHP7,639.32(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 350A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 240-907
  • Mfr. Part No. 191367 NZMH3-MX350
Each
PHP188,555.63(exc. VAT)
In Stock
ABB RCBO, 63A Current Rating, 3P Poles, Type C
  • RS Stock No. 237-5186
  • Mfr. Part No. 2CSR273101R1634
Each
PHP32,314.03(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4316 MCB, 3P, 16A Curve D, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 300-058
  • Mfr. Part No. 5SJ4316-8HG41
Each
PHP17,658.90(exc. VAT)
Temporarily out of stock
ABB Distribution Board
  • RS Stock No. 237-5938
  • Mfr. Part No. 124T1PB3MD
Each
PHP188,530.53(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 60A, Breaking Capacity 3 kA
  • RS Stock No. 245-469
  • Mfr. Part No. 3VA6160-0KQ31-0AA0
Each
PHP202,338.08(exc. VAT)
In Stock
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 63A Curve B, 500V AC, 72V DC, 240 V Breaking Capacity
  • RS Stock No. 458-795
  • Mfr. Part No. A9F93163
Each
PHP21,149.46(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 315mA, 250V ac
  • RS Stock No. 173-9756
  • Mfr. Part No. 0034.6610
Each (In a Bag of 100)
PHP29.90(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1.25kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 429-175
  • Mfr. Part No. C125N35EFM
Each
PHP981,448.94(exc. VAT)
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 4 Pole 690V Voltage Rating Clip-On, 125A
  • RS Stock No. 357-948
  • Mfr. Part No. BJL46125LU
Each
PHP199,656.37(exc. VAT)
Being discontinued
Schneider Electric, NSX Range MCCB 3P 250A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 849-4453
  • Mfr. Part No. LV431670
Each
PHP58,980.50(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-567
  • Mfr. Part No. 3VA5130-4EF31-0AA0
Each
PHP35,545.33(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 20A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 248-623
  • Mfr. Part No. 102231 FAZ-D20/2-RT
Each
PHP12,536.16(exc. VAT)
Temporarily out of stock
ABB S802C MCB, 2P, 63A Curve B, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-538
  • Mfr. Part No. 2CCS882001R0635
Each
PHP9,936.60(exc. VAT)
Temporarily out of stock
Siemens SENTRON Adapter for use with 8WA Label
  • RS Stock No. 272-0368
  • Mfr. Part No. 8WH9060-4AA00
Each (In a Pack of 100)
PHP6.445(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric iID RCCB, 40A, 2 Pole, 300mA, Type A-SI, 240V ac
  • RS Stock No. 248-3701
  • Mfr. Part No. A9R35240
Each
PHP31,036.10(exc. VAT)
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