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

276 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-504
  • Mfr. Part No. 3VA5220-5ED31-2AA0
Each
PHP98,342.90(exc. VAT)
Unavailable
Omron Busbar
  • RS Stock No. 111-3069
  • Mfr. Part No. PYDN-6.2-020S
Each
PHP57.24(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-4523
  • Mfr. Part No. 3VA2125-5MP36-0AA0
Each
PHP75,547.39(exc. VAT)
In Stock
Eaton 25A British Standard Fuse, ET, 690V, 63.5mm
  • RS Stock No. 182-1501
  • Mfr. Part No. 25ET
Each (In a Box of 10)
PHP1,148.004(exc. VAT)
Temporarily out of stock
Omron Busbar
  • RS Stock No. 111-3536
  • Mfr. Part No. PYDN-7.75-030Y
Each
PHP113.67(exc. VAT)
In Stock
Eaton xEffect - FRCmM RCCB, 25A, 4 Pole, 100mA, Type A, 240/415V ac
  • RS Stock No. 123-242
  • Mfr. Part No. 170338 FRCMM-25/4/01-A
Each
PHP11,071.57(exc. VAT)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 100mA, 250V ac
  • RS Stock No. 169-9494
  • Mfr. Part No. SR-5-100MA-BK
Each (In a Bag of 200)
PHP65.838(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-509
  • Mfr. Part No. 3VA6580-7KL36-2AA0
Each
PHP613,612.23(exc. VAT)
Temporarily out of stock
ABB, Tmax XT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-7291
  • Mfr. Part No. 1SDA067463R1 XT1H 160 TMD 125A FF
Each
PHP52,432.00(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA
  • RS Stock No. 209-6937
  • Mfr. Part No. 3VA2216-6HL42-0AA0
Each
PHP112,478.25(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 230-055
  • Mfr. Part No. 110891 NZMN3-VE250-T
Each
PHP196,693.14(exc. VAT)
Temporarily out of stock
Schneider Electric MCCB 3P, Fixed Mount
  • RS Stock No. 178-7897
  • Mfr. Part No. LV426960
Each
PHP3,173.52(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6579
  • Mfr. Part No. 1SDA068062R1 XT3N 250 TMD 100A FF
Each
PHP57,510.16(exc. VAT)
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 5A, 63V
  • RS Stock No. 252-2134
Each (On a Tape of 4000)
PHP10.445(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 160A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-7963
  • Mfr. Part No. LV426758
Each
PHP85,574.09(exc. VAT)
Temporarily out of stock
TE Connectivity Circuit Breaker - W28 Single Pole 250 or 32V Voltage Rating Panel Mount, 12A Current Rating
  • RS Stock No. 473-753
  • Mfr. Part No. 2-1393250-7
1 Pack of 40
PHP13,803.00(exc. VAT)
Temporarily out of stock
Schneider Electric Acti 9 Voltage Adaption Module for use with Acti 9 RCA, Acti 9 Reflex iC60
  • RS Stock No. 211-1628
  • Mfr. Part No. A9C18195
Each
PHP30,769.51(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-841
  • Mfr. Part No. A9DF4606
Each
PHP30,377.57(exc. VAT)
Temporarily out of stock
Siemens 900A Tag Fuse, 99mm, 900V
  • RS Stock No. 608-835
  • Mfr. Part No. 3NE6444
1 Pack of 3
PHP49,527.25(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-034
  • Mfr. Part No. 3VA6130-1MS31-0AA0
Each
PHP50,951.08(exc. VAT)
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