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

33503 Products showing for Fuses & Circuit Breakers

328 of 999+
Temporarily out of stock
ABB S203L MCB, 3P, 40A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-081
  • Mfr. Part No. 2CDS243701R0401
Each
PHP20,866.72(exc. VAT)
Temporarily out of stock
SENTRON Shunt Trip Voltage Release for use with 3VA4/5/6 Series
  • RS Stock No. 263-701
  • Mfr. Part No. 3VA9978-0BL20
Each
PHP9,896.97(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 26A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 230-926
  • Mfr. Part No. 107657 NZMB2-S26-BT-CNA
Each
PHP42,886.88(exc. VAT)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 200mA, 250V ac
  • RS Stock No. 226-0535
  • Mfr. Part No. 3700200000
Each (In a Pack of 10)
PHP64.424(exc. VAT)
Temporarily out of stock
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 4 channels
  • RS Stock No. 160-033
  • Mfr. Part No. 3VA2463-5HN42-0BH0
Each
PHP315,033.60(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3963
  • Mfr. Part No. 3VA2110-6JQ42-0AA0
Each
PHP140,590.43(exc. VAT)
Temporarily out of stock
ABB, Tmax MCCB
  • RS Stock No. 237-5973
  • Mfr. Part No. 1SDA054559R1
Each
PHP38,359.08(exc. VAT)
Temporarily out of stock
Bourns SMD Non Resettable Fuse 30A, 250V ac
  • RS Stock No. 187-8667
  • Mfr. Part No. SF-3812F3000T-2
Each (On a Reel of 2500)
PHP149.945(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar, 400V
  • RS Stock No. 211-2273
  • Mfr. Part No. AK5JB144
Each
PHP10,481.48(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 100mA, 250V ac
  • RS Stock No. 895-1653
  • Mfr. Part No. 37201000411
Each (In a Pack of 10)
PHP50.292(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 4P 800A, Breaking Capacity 75 kA
  • RS Stock No. 340-922
  • Mfr. Part No. C080B4WM
Each
PHP385,102.16(exc. VAT)
In Stock
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6190
  • Mfr. Part No. 5SU1326-6FP16
Each
PHP13,146.29(exc. VAT)
Currently unavailable
RS PRO 25A NH Fuse, NH000, 415V ac
  • RS Stock No. 221-3671
Each (In a Pack of 3)
PHP952.773(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 3P, 5A Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-681
  • Mfr. Part No. 2CDS273347R0357
Each
PHP40,328.17(exc. VAT)
Temporarily out of stock
Hager ARC MCB, 32A, 3 Breaking Capacity
  • RS Stock No. 602-200
  • Mfr. Part No. ARC732F
Each
PHP18,168.90(exc. VAT)
In Stock
Eaton 100A Centred Tag Fuse, NH00, 690V ac
  • RS Stock No. 182-1649
  • Mfr. Part No. 100NHM00B-690
Each
PHP954.99(exc. VAT)
Temporarily out of stock
Siemens 200A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6929
  • Mfr. Part No. 3NA7240-6
Each (In a Pack of 3)
PHP4,882.253(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 230-651
  • Mfr. Part No. 112740 NZMC1-A80-SVE
Each
PHP37,828.42(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 500mA Curve K, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-975
  • Mfr. Part No. 2CDS271061R0157
Each
PHP10,287.61(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-388
  • Mfr. Part No. 113373 NZMH2-4-A80-SVE
Each
PHP67,812.58(exc. VAT)
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