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

13 of 999+
Temporarily out of stock
Eaton 5A Cartridge Fuse, 51 x 565mm
  • RS Stock No. 254-880
  • Mfr. Part No. 24FDIHA5
1 Pack of 3
PHP134,148.20(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 2P, 40A Curve C, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-894
  • Mfr. Part No. A9K12240
Each
PHP1,138.62(exc. VAT)
In Stock
Better World
Schneider Electric Compact Nsx, Compact Nsx Dc, Easypact Cvs Mechanical Interlock for use with Compact Nsx 400/630
  • RS Stock No. 221-1272
  • Mfr. Part No. LV432621
Each
PHP23,043.28(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 200A, Fixed Mount
  • RS Stock No. 254-6360
  • Mfr. Part No. C25N3TM200
Each
PHP131,699.65(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric EZ9 RCCB, 63A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 850-8583
  • Mfr. Part No. EZ9R33263
Each
PHP1,445.22(exc. VAT)
Temporarily out of stock
ABB S802N MCB, 2P, 25A Curve D, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 141-138
  • Mfr. Part No. 2CCS892001R0251
Each
PHP12,516.68(exc. VAT)
In Stock
ABB 20A Fuse Holder for 8.5 x 31.5mm Fuse, 2P, 400V
  • RS Stock No. 289-1621
  • Mfr. Part No. 2CSM200953R1801
Each
PHP755.36(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60N MCB Mini Circuit Breaker, 1P, 16A Curve C, 230V AC, 6000 A Breaking Capacity
  • RS Stock No. 588-872
  • Mfr. Part No. A9K02116
Each
PHP287.88(exc. VAT)
In Stock
Better World
Schneider Electric TeSys for use with TeSys GV-U
  • RS Stock No. 211-2540
  • Mfr. Part No. GVAPL01
Each
PHP6,075.30(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 100A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9735
  • Mfr. Part No. LV510337
Each
PHP31,750.50(exc. VAT)
In Stock
Schneider Electric, ComPacT New Generation Circuit breaker 3P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 254-6281
  • Mfr. Part No. C10F3
Each
PHP18,885.89(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 7A, 125V ac/dc
  • RS Stock No. 541-3316
  • Mfr. Part No. 0251007.HAT1L
Each (In a Pack of 10)
PHP49.896(exc. VAT)
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 4 kA, Fixed Mount
  • RS Stock No. 232-0252
  • Mfr. Part No. 1SDA067399R1 XT1C 160 TMD 160A FF
Each
PHP25,828.65(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 320A, Breaking Capacity 55 kA
  • RS Stock No. 209-7033
  • Mfr. Part No. 3VA1463-5EF32-0AA0
Each
PHP174,168.74(exc. VAT)
In Stock
Siemens 25A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1089
  • Mfr. Part No. 5SE2325
Each (In a Pack of 10)
PHP89.619(exc. VAT)
In Stock
Littelfuse Cartridge Fuse 15A, 300 V dc, 600V ac
  • RS Stock No. 878-3318
  • Mfr. Part No. KLDR015
Each (In a Pack of 10)
PHP3,063.981(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 50kA, DIN Rail Mount
  • RS Stock No. 201-6560
  • Mfr. Part No. 2909589
Each
PHP98,514.91(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A , DIN Rail
  • RS Stock No. 127-487
  • Mfr. Part No. 183347 IZMX16N3-V08W-1
Each
PHP349,682.93(exc. VAT)
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV3P 3 Pole 690V ac Voltage Rating DIN Rail Mount, 80A Current Rating
  • RS Stock No. 188-4740
  • Mfr. Part No. GV3P80
Each
PHP18,680.92(exc. VAT)
In Stock
WJ Furse Copper Alloy Earth Clamp Nominal Rod dia. 16mm
  • RS Stock No. 153-2963
  • Mfr. Part No. 7TCA083220R0010 CR515
Each (In a Pack of 10)
PHP644.383(exc. VAT)
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