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

33502 Products showing for Fuses & Circuit Breakers

182 of 999+
Temporarily out of stock
Better World
Schneider Electric LV4 Mounting Kit for use with ComPact NSX100/160/250
  • RS Stock No. 219-9352
  • Mfr. Part No. LV429291
Each
PHP34,400.07(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-7523
  • Mfr. Part No. 1SDA067844R1 XT2S 160 Ekip I 160A FF
Each
PHP71,704.56(exc. VAT)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 4A, 250V ac
  • RS Stock No. 377-2196P
  • Mfr. Part No. 3821400041
Each (Supplied in a Bag)
PHP111.539(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 32A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-7817
  • Mfr. Part No. 2CDS254001R0324 S204-C32
Each
PHP13,034.26(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels
  • RS Stock No. 157-352
  • Mfr. Part No. 3VA2225-6KQ42-0AA0
Each
PHP258,962.00(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 249-263
  • Mfr. Part No. 3VA6460-0HN41-0AA0
Each
PHP498,514.12(exc. VAT)
In Stock
Siemens 710A German Standard Fuse, NH2, 900V
  • RS Stock No. 210-6974
  • Mfr. Part No. 3NE3337-8
Each (In a Pack of 3)
PHP20,446.89(exc. VAT)
Temporarily out of stock
Hager NEN MCB, 1P, 20A Curve B, 230 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 598-001
  • Mfr. Part No. NEN120
Each
PHP4,166.03(exc. VAT)
In Stock
Schneider Electric RCBO, 40A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Easy9 Range
  • RS Stock No. 654-813
  • Mfr. Part No. EZ9TDA7640
Each
PHP15,418.44(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 55 kA
  • RS Stock No. 209-6926
  • Mfr. Part No. 3VA2140-5KP42-0AA0
Each
PHP102,150.98(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9554
  • Mfr. Part No. 3VA10103ED360AA0
Each
PHP29,224.48(exc. VAT)
In Stock
Schneider Electric Acti9 A9F MCB, 1P, 25A Curve C, 230V AC, 72V DC, 25 kA Breaking Capacity
  • RS Stock No. 288-7094
  • Mfr. Part No. A9F94125
Each
PHP11,887.73(exc. VAT)
Currently unavailable
ABB Plastic Consumer Unit, IP65 1SLM006500A
  • RS Stock No. 286-4988
  • Mfr. Part No. 1SLM006500A3116
Each
PHP10,111.78(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 1P, 32A Curve C, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-890
  • Mfr. Part No. A9K12132
Each
PHP395.29(exc. VAT)
Temporarily out of stock
ABB Tmax XT Plug In Unit for use with XT1
  • RS Stock No. 236-6637
  • Mfr. Part No. 1SDA068185R1 XT1 P FP EF
Each
PHP22,486.89(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 249-020
  • Mfr. Part No. 191616 NZMN3-4-VX400/VAR-AVE
Each
PHP266,851.68(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 260-7563
  • Mfr. Part No. C11E3TM080L
Each
PHP29,198.64(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 300mA Curve K, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-974
  • Mfr. Part No. 2CDS271061R0117
Each
PHP10,287.61(exc. VAT)
Temporarily out of stock
Siemens 80A Centred Tag Fuse, NH1, 1kV
  • RS Stock No. 230-2983
  • Mfr. Part No. 3NE1220-4
Each (In a Pack of 2)
PHP10,162.90(exc. VAT)
Temporarily out of stock
xEffect MCB, 3P, 63A Curve D, 400V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 252-938
  • Mfr. Part No. 211820 AZ-3-D63
Each
PHP33,136.53(exc. VAT)
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