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

33493 Products showing for Fuses & Circuit Breakers

95 of 999+
Temporarily out of stock
Resi9 Busbar, 230V ac, 18mm Pitch
  • RS Stock No. 585-435
  • Mfr. Part No. R9EXVN15
1 Pack of 5
PHP4,110.33(exc. VAT)
In Stock
ABB Tmax XT Rotary Handle for use with SACE Tmax XT
  • RS Stock No. 236-6856
  • Mfr. Part No. 1SDA069057R1 RHE_B XT2-XT4 F/P BASE RH
Each
PHP4,990.71(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9616
  • Mfr. Part No. 3VA10802ED420AA0
Each
PHP29,264.10(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-983
  • Mfr. Part No. 3VA5215-7GC41-2AA0
Each
PHP160,924.51(exc. VAT)
In Stock
Eaton Professional Series Distribution Board
  • RS Stock No. 125-756
  • Mfr. Part No. 174198 IKA-2/24-ST
Each
PHP11,296.91(exc. VAT)
Temporarily out of stock
ABB, T6S MCCB 3P 800A, Fixed Mount
  • RS Stock No. 237-5992
  • Mfr. Part No. 1SDA060279R1 T6S800 FF PR221-I 800A
Each
PHP194,735.42(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 229-418
  • Mfr. Part No. 107621 NZMB2-AF80-BT-NA
Each
PHP44,499.72(exc. VAT)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit, 780mm, 630A, Canalis Series
  • RS Stock No. 354-296
  • Mfr. Part No. KH063SD551
Each
PHP233,935.08(exc. VAT)
Temporarily out of stock
Better World
Siemens 5SV3 RCCB, 40A, 4 Pole, 100mA, Type A, 400V ac
  • RS Stock No. 209-6573
  • Mfr. Part No. 5SV3444-8
Each
PHP17,793.19(exc. VAT)
Temporarily out of stock
Siemens ALPHA Distribution Board, 18 Way
  • RS Stock No. 211-6079
  • Mfr. Part No. 8GB1371-3
Each
PHP4,248.29(exc. VAT)
In Stock
Siemens 125A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 210-6883
  • Mfr. Part No. 3NA3132-6
Each (In a Pack of 3)
PHP4,073.957(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Compact NSX, Easy Pact CVS, FuPact INFB Crimp Lug for use with For copper cable 300 mm2
  • RS Stock No. 219-9402
  • Mfr. Part No. LV432503
Each
PHP9,477.77(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 1A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-346
  • Mfr. Part No. 2CDS272061R0014
Each
PHP15,982.82(exc. VAT)
In Stock
Acti9 iID RCCB, 25A, 2 Pole, 10mA, Type A-SI, 220 → 240V ac
  • RS Stock No. 585-481
  • Mfr. Part No. A9R30225
Each
PHP39,081.25(exc. VAT)
In Stock
Eaton 16A British Standard Fuse, 550V, 111mm
  • RS Stock No. 181-8472
  • Mfr. Part No. AD16
1 Box of 20
PHP22,045.22(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FBHmV RCCB, 80A, 4 Pole, 300mA, Type A, 240/415V ac
  • RS Stock No. 121-122
  • Mfr. Part No. 170131 FBHMV-80/4/03-A
Each
PHP22,104.24(exc. VAT)
In Stock
ABB RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity
  • RS Stock No. 231-9921
  • Mfr. Part No. 2CSR255080R1064 DS201 C6 AC30
1 Box of 1
PHP11,642.82(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA
  • RS Stock No. 209-6787
  • Mfr. Part No. 3VA1125-5ED42-0AA0
Each
PHP30,632.21(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4512
  • Mfr. Part No. 3VA2125-0KQ32-0AA0
Each
PHP143,580.98(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELH111 3 Pole 480V ac Voltage Rating Panel Mount, 20A Current Rating
  • RS Stock No. 275-0229
  • Mfr. Part No. IELH111-1-61-20.0-AE-21-V
1 Box of 5
PHP70,044.07(exc. VAT)
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