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

33493 Products showing for Fuses & Circuit Breakers

98 of 999+
In Stock
Better World
Schneider Electric Acti 9 2 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2720
  • Mfr. Part No. A9XPH212
Each
PHP3,648.02(exc. VAT)
Temporarily out of stock
Hager NGN MCB, 4P, 10A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4774
  • Mfr. Part No. NGN410
Each
PHP18,252.99(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-500
  • Mfr. Part No. 3VA5110-6ED31-1AA0
Each
PHP42,153.84(exc. VAT)
Temporarily out of stock
RS PRO 5A Tan Blade Car Fuse, 32V dc
  • RS Stock No. 177-8010
1 Bag of 1000
PHP11,573.36(exc. VAT)
Temporarily out of stock
Wickmann Resettable Fuse, 125V ac/dc
  • RS Stock No. 174-0322
  • Mfr. Part No. 0251004.MRT1L
1 Reel of 1000
PHP34,116.67(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 3P, 200mA Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-677
  • Mfr. Part No. 2CDS273347R0087
Each
PHP40,328.17(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 3A, Type A, 230V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-503
  • Mfr. Part No. 5SY4503-5
Each
PHP6,442.21(exc. VAT)
Temporarily out of stock
ABB, Parts MCCB 4P 0A
  • RS Stock No. 236-6843
  • Mfr. Part No. 1SDA068642R1
Each
PHP2,446.92(exc. VAT)
Temporarily out of stock
Eaton Surge Arrester, 25kA, On Base Element Mount
  • RS Stock No. 250-9825
  • Mfr. Part No. 195237 SPRT12-350
Each
PHP28,591.33(exc. VAT)
Temporarily out of stock
ABB Cover for use with E210 Series
  • RS Stock No. 231-9545
  • Mfr. Part No. 2CCA703480R0001 E210-DH
1 Box of 1
PHP1,107.29(exc. VAT)
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 232-0218
  • Mfr. Part No. 1SDA066818R1 XT1B 160 TMD 100A FF
Each
PHP28,626.47(exc. VAT)
Temporarily out of stock
Siemens ALPHA 400/630 DIN Adapter Kit for use with Assembly kit terminal blocks
  • RS Stock No. 210-1761
  • Mfr. Part No. 8GK4402-3KK12
Each
PHP8,788.54(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4125 MCB, 1P, 25A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-839
  • Mfr. Part No. 5SJ4125-8HG42
Each
PHP4,743.22(exc. VAT)
Temporarily out of stock
ABB Shunt Trip Shunt trip for use with Tmax XT1, Tmax XT2, Tmax XT3, Tmax XT4
  • RS Stock No. 192-0919
  • Mfr. Part No. 1SDA066314R1
Each
PHP8,347.14(exc. VAT)
New product - Preorder today
Schneider Electric, EasyPact Circuit breaker 1P 25A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 140-015
  • Mfr. Part No. EZC100N1025
Each
PHP7,331.68(exc. VAT)
Limited stock
ETA Cover for use with 9510
  • RS Stock No. 723-4840
  • Mfr. Part No. X200.801.08 M12 CLEAR COVER+PLATED NUT
Each
PHP983.60(exc. VAT)
In Stock
Endress+Hauser Surge Arrester, 2kA, DIN Rail Mount, Panel Mount Mount
  • RS Stock No. 267-9373
  • Mfr. Part No. HAW562-8DA
Each
PHP12,583.01(exc. VAT)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - IEG66 2 Pole Panel Mount, 35A Current Rating
  • RS Stock No. 275-0208
  • Mfr. Part No. IEG66-1-51-35.0-A-01-V
Each
PHP6,208.49(exc. VAT)
In Stock
Eaton MCB, 1P, 16A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 240-529
  • Mfr. Part No. 101251 PLI-B16/1
Each
PHP857.74(exc. VAT)
Temporarily out of stock
ABB RCCB, 63A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 246-2241
  • Mfr. Part No. 2CCF544110E0631 F404A-LF63/0.03
Each
PHP67,725.20(exc. VAT)
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