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

131 of 999+
Temporarily out of stock
Phoenix Contact 2 Phase Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 207-2703
  • Mfr. Part No. 2905343
Each
PHP23,908.61(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 16A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9626
  • Mfr. Part No. 3VA10962ED420AA0
Each
PHP24,571.70(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3772
  • Mfr. Part No. 3VA2063-5KP32-0AA0
Each
PHP84,515.93(exc. VAT)
Temporarily out of stock
Schneider Electric, MasterPact Circuit Breaker Accessory
  • RS Stock No. 119-647
  • Mfr. Part No. LV833811
Each
PHP29,453.09(exc. VAT)
Temporarily out of stock
Siemens 630A Slotted Tag Fuse, NH3, 690V
  • RS Stock No. 230-3005
  • Mfr. Part No. 3NE1436-3
Each (In a Pack of 3)
PHP18,982.417(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 45A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 346-792
  • Mfr. Part No. BDF36045
Each
PHP50,625.58(exc. VAT)
Temporarily out of stock
Eaton 20A British Standard Fuse, E1, 240V ac
  • RS Stock No. 418-748
  • Mfr. Part No. SSD20
Each (In a Pack of 5)
PHP201.616(exc. VAT)
Temporarily out of stock
Eaton 2A Grey Blade Car Fuse, 32V ac/dc
  • RS Stock No. 852-7317
  • Mfr. Part No. ATM-2
Each
PHP116.89(exc. VAT)
In Stock
Eaton 40A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8642
  • Mfr. Part No. 40NHG000B
Each
PHP347.06(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 270-3528
  • Mfr. Part No. 3VA1463-6EF42-0AA0
Each
PHP271,521.22(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 191-6075
  • Mfr. Part No. A9DA6610
Each
PHP23,219.88(exc. VAT)
In Stock
Mersen Surge Protector
  • RS Stock No. 251-3642
  • Mfr. Part No. 83120244 / STPT12-5K680V-3P-RM
Each
PHP49,167.47(exc. VAT)
Temporarily out of stock
ABB, Tmax XT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 236-7357
  • Mfr. Part No. 1SDA067557R1 XT2S 160 TMA 80A FF
Each
PHP27,442.75(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2V MCCB 4P 25A, Fixed Mount
  • RS Stock No. 236-6534
  • Mfr. Part No. 1SDA068005R1 XT2V 160 Ekip LS/I 25A FF
Each
PHP105,369.70(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2V MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-6545
  • Mfr. Part No. 1SDA068018R1 XT2V 160 Ekip LSI 63A FF
Each
PHP150,499.43(exc. VAT)
In Stock
ABB PS2 2 Phase Busbar, 400V
  • RS Stock No. 231-9639
  • Mfr. Part No. 2CDL220001R3058 PS 2/58/30
1 Box of 1
PHP7,154.83(exc. VAT)
Temporarily out of stock
ABB RCBO, 50A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5199
  • Mfr. Part No. 2CSR274001R1504
Each
PHP34,845.58(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-390
  • Mfr. Part No. 113362 NZMH2-M125-SVE
Each
PHP87,826.46(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 1.6kA, Fixed Mount
  • RS Stock No. 247-1767
  • Mfr. Part No. 33260
Each
PHP306,968.14(exc. VAT)
In Stock
Mersen 100A NH Fuse, NH000, 690V ac
  • RS Stock No. 377-0156
  • Mfr. Part No. T322063
Each
PHP3,254.41(exc. VAT)
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