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

88 of 999+
In Stock
Better World
Schneider Electric Acti 9 Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 806-7222
  • Mfr. Part No. A9XPH312
Each
PHP4,825.76(exc. VAT)
Last RS stock
Mersen Surge Protector
  • RS Stock No. 179-3060
  • Mfr. Part No. 83020146 / STPT2-40K275V-4PG
Each
PHP12,922.73(exc. VAT)
In Stock
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 1A Curve C, 500V AC, 72V DC, 230 V Breaking Capacity
  • RS Stock No. 479-575
  • Mfr. Part No. A9F94101
Each
PHP9,198.87(exc. VAT)
New product - Preorder today
Schneider Electric 16 Way Metal Consumer Unit, 100A, IP2X, IP3X EZ9E
  • RS Stock No. 654-696
  • Mfr. Part No. EZ9E16MCCU
Each
PHP5,848.47(exc. VAT)
In Stock
Eaton 6A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 413-282
  • Mfr. Part No. NITD6
Each (In a Pack of 5)
PHP309.866(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7845
  • Mfr. Part No. C2545E250
Each
PHP120,681.19(exc. VAT)
In Stock
Schneider Electric 440V ac Circuit Breaker Circuit Trip for use with Circuits
  • RS Stock No. 130-544
  • Mfr. Part No. C12E44V160B
Each
PHP186,656.82(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)
Temporarily out of stock
Siemens SENTRON 5SY6 MCB, 2P, 15A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-518
  • Mfr. Part No. 5SY6218-7
Each
PHP6,368.84(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FBHmV RCCB, 125A, 4 Pole, 30mA, Type A, 240/415V ac
  • RS Stock No. 121-121
  • Mfr. Part No. 170130 FBHMV-125/4/003-A
Each
PHP30,605.82(exc. VAT)
In Stock
Phoenix Contact Thermal Circuit Breaker - Single Pole 32V dc Voltage Rating Base Mounting, 10A Current Rating
  • RS Stock No. 608-080
  • Mfr. Part No. 1499967
Each
PHP489.12(exc. VAT)
In Stock
RS PRO Residential RCCBs, 25A, 2 Pole, 300mA, Type A, 230V
  • RS Stock No. 284-2368
Each
PHP4,363.39(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 5A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-724
  • Mfr. Part No. 3VA5105-1MU31-0AA0
Each
PHP34,278.32(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric iID RCCB, 100A, 4 Pole, 30mA, Type AC, 415V ac
  • RS Stock No. 248-3694
  • Mfr. Part No. A9R11491
Each
PHP50,416.42(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA
  • RS Stock No. 209-7038
  • Mfr. Part No. 3VA2010-6HN46-0AA0
Each
PHP70,717.01(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 25A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-315
  • Mfr. Part No. 3VA5125-5ED11-1AA0
Each
PHP14,701.47(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit with Fuse, Canalis KBC Series
  • RS Stock No. 219-8882
  • Mfr. Part No. KBC16DCP2
Each
PHP9,459.25(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4H MCCB 3P 100A, Fixed Mount
  • RS Stock No. 236-6785
  • Mfr. Part No. 1SDA068513R1 XT4H 160 Ekip LS/I 100A FF
Each
PHP66,939.61(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 100A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 212-0266
  • Mfr. Part No. LV433245
Each
PHP60,069.42(exc. VAT)
Temporarily out of stock
BB-EV 1 Phase Busbar, 1000V, 36mm Pitch
  • RS Stock No. 247-365
  • Mfr. Part No. 168835 BB-EVF-16/1P-2MU
Each
PHP3,035.07(exc. VAT)
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