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

122 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 250-071
  • Mfr. Part No. 3VA6580-7KL36-0AA0
Each
PHP562,294.60(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-789
  • Mfr. Part No. A9D19220
Each
PHP28,367.19(exc. VAT)
Temporarily out of stock
Hager CDH RCCB, 25A, 1P+N Pole, 30mA, Type A-HI, 230V ac
  • RS Stock No. 597-911
  • Mfr. Part No. CDH125F
Each
PHP17,114.63(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 2P, 32A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-342
  • Mfr. Part No. 2CDS272001R0538
Each
PHP21,877.70(exc. VAT)
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 100A, Fixed Mount
  • RS Stock No. 232-0236
  • Mfr. Part No. 1SDA067018R1 XT2N 160 TMA 100A FF
Each
PHP24,338.50(exc. VAT)
In Stock
Siemens 50A NH Fuse, NH2, 500V ac
  • RS Stock No. 397-610
  • Mfr. Part No. 3NA3220
Each (In a Pack of 3)
PHP1,714.463(exc. VAT)
Temporarily out of stock
Eaton Single Phase Surge Arrester, 10kA, 1.6kV, DIN Rail Mount
  • RS Stock No. 123-628
  • Mfr. Part No. 170487 SPDT3-335-1+NPE
Each
PHP12,315.46(exc. VAT)
Temporarily out of stock
Schneider Electric, Canalis Series
  • RS Stock No. 357-535
  • Mfr. Part No. KSB100SV5
Each
PHP53,522.09(exc. VAT)
Temporarily out of stock
Eaton NZM Jumper Link for use with N4-4-...-S1(-S15)-PV-NA, N4-4-…-S1(-S15)-DC
  • RS Stock No. 121-565
  • Mfr. Part No. 152553 NZM4-4-XKV2P-K
Each
PHP60,351.79(exc. VAT)
In Stock
Bourns 60A Tag Fuse, 38mm, 170V dc, 24.1mm
  • RS Stock No. 254-4232
  • Mfr. Part No. PF-NT5-60
Each (In a Box of 10)
PHP1,448.877(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 100A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9754
  • Mfr. Part No. LV510477
Each
PHP44,356.57(exc. VAT)
Temporarily out of stock
ABB S804S MCB, 4P, 50A, UC-B, 1000V DC, 50 kA Breaking Capacity
  • RS Stock No. 140-817
  • Mfr. Part No. 2CCS864001R1505
Each
PHP41,522.50(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 110A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-244
  • Mfr. Part No. 3VA5211-6GC41-0AA0
Each
PHP142,747.28(exc. VAT)
Being discontinued
RS PRO PC Board Non Resettable Fuse, Axial 1A, 250V ac
  • RS Stock No. 764-9589
Each (In a Pack of 10)
PHP35.095(exc. VAT)
In Stock
Bourns 1.25A Resettable Fuse, 33V
  • RS Stock No. 245-9135
  • Mfr. Part No. MF-LSMF125/33X-2
Each (On a Tape of 10)
PHP34.594(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 3P, 25A Curve D, 400V AC, 72V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-468
  • Mfr. Part No. 5SY8325-8BB08
Each
PHP11,666.42(exc. VAT)
Temporarily out of stock
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 3P, 45A Curve C, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-066
  • Mfr. Part No. M9F42345
Each
PHP14,911.28(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELBXK1 Single Pole Panel Mount, 80A Current Rating
  • RS Stock No. 275-0227
  • Mfr. Part No. IELBXK1-1REG4-52-80.0-A-M3-V
1 Box of 5
PHP42,082.92(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 800A, Fixed Mount
  • RS Stock No. 232-0130
  • Mfr. Part No. 1SDA060222R1 T6N800 FF TMA 800A
Each
PHP238,893.38(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 200A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-716
  • Mfr. Part No. IL2003P36
Each
PHP78,153.52(exc. VAT)
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