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

33485 Products showing for Fuses & Circuit Breakers

16 of 999+
In Stock
Better World
Schneider Electric Linergy Busbar, 690V, 45mm Pitch
  • RS Stock No. 400-2000
  • Mfr. Part No. GV2G445
Each
PHP2,631.11(exc. VAT)
In Stock
Siemens 35A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 203-2026
  • Mfr. Part No. 3NA7814
Each (In a Pack of 3)
PHP419.30(exc. VAT)
In Stock
ETI 10A D01 Neozed Fuse, E14 Thread Size, gG, 400V ac
  • RS Stock No. 415-963
  • Mfr. Part No. 2211004
Each (In a Pack of 5)
PHP68.846(exc. VAT)
Temporarily out of stock
ABB S803N MCB, 3P, 25A Curve D, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-421
  • Mfr. Part No. 2CCS893001R0251
Each
PHP17,505.11(exc. VAT)
Temporarily out of stock
Eaton PKPM2 RCCB, 10A, 2 Pole, 30mA, Type B, 230V
  • RS Stock No. 232-022
  • Mfr. Part No. 108105 PKPM2-10/2/B/003-A
Each
PHP15,615.22(exc. VAT)
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 232-0095
  • Mfr. Part No. 1SDA054437R1 T5N400 FF TMA 400A
Each
PHP100,590.36(exc. VAT)
Temporarily out of stock
Penta Fiberglass Earth Clamp Max. Conductor Size Cable CC 70mm² / terre 35mm² 317.5mm
  • RS Stock No. 248-9892
  • Mfr. Part No. PIMT49S
Each
PHP172,598.73(exc. VAT)
Temporarily out of stock
Mersen Surge Protector
  • RS Stock No. 179-3068
  • Mfr. Part No. 83230127 / STPT23-20K275V-4PG-LFM
Each
PHP13,498.49(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7674
  • Mfr. Part No. C12B3TM125L
Each
PHP42,381.67(exc. VAT)
In Stock
Schurter 6.3A Inline Fuse Holder for 5 x 20mm Fuse, 32V dc
  • RS Stock No. 703-2815P
  • Mfr. Part No. 8601.2001.08
Each (Supplied in a Box)
PHP112.688(exc. VAT)
In Stock
Bourns 0.5A Resettable Fuse, 60V
  • RS Stock No. 647-8493
  • Mfr. Part No. MF-R050
Each (In a Pack of 10)
PHP28.542(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 3P, 100A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-649
  • Mfr. Part No. 2CCS863017R0105
Each
PHP23,599.55(exc. VAT)
In Stock
Eaton 3 Phase Surge Protector, 15kA, 110 → 230 V dc, 110 → 415V ac, DIN Rail Mount
  • RS Stock No. 847-3677
  • Mfr. Part No. 102036 FAZ-XAA-NA110-415VAC
Each
PHP3,408.93(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 30A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-405
  • Mfr. Part No. C10N1TM030
Each
PHP17,627.72(exc. VAT)
In Stock
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.1kV, DIN Rail Mount
  • RS Stock No. 101-748
Each
PHP2,235.84(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 160A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9756
  • Mfr. Part No. LV516303
Each
PHP42,496.51(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 4A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-569
  • Mfr. Part No. 102162 FAZ-C4/2-NA
Each
PHP11,436.50(exc. VAT)
In Stock
RS PRO Single Phase Industrial Surge Protector, 40kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-797
Each
PHP4,113.61(exc. VAT)
Temporarily out of stock
RS PRO Industrial Surge Protector, 2000A, 20 V, DIN Rail Mount
  • RS Stock No. 101-779
Each
PHP5,527.55(exc. VAT)
Being discontinued
RS PRO 500mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-633
Each (In a Pack of 10)
PHP25.565(exc. VAT)
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