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

33502 Products showing for Fuses & Circuit Breakers

199 of 999+
Temporarily out of stock
Siemens 50A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 210-6878
  • Mfr. Part No. 3NA3120-6
Each (In a Pack of 3)
PHP4,073.957(exc. VAT)
In Stock
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 1A Curve C, 500V AC, 72V DC, 230 V Breaking Capacity
  • RS Stock No. 479-575
  • Mfr. Part No. A9F94101
Each
PHP9,198.87(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 341-549
  • Mfr. Part No. A9D27220
Each
PHP71,793.36(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 16A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9746
  • Mfr. Part No. LV510470
Each
PHP36,201.15(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 350A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 243-032
  • Mfr. Part No. 191597 NZMN3-MX350-SVE
Each
PHP179,978.26(exc. VAT)
Temporarily out of stock
ABB Flange for use with Tmax XT
  • RS Stock No. 237-6131
  • Mfr. Part No. 1SDA066649R1
Each
PHP2,612.43(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 4 channels
  • RS Stock No. 156-710
  • Mfr. Part No. 3VA2325-6KQ42-0AA0
Each
PHP303,966.91(exc. VAT)
Temporarily out of stock
Eaton 30A Fuse Holder, 3P, 600V ac/dc
  • RS Stock No. 261-310
  • Mfr. Part No. CHCC3DU
1 Pack of 4
PHP6,593.77(exc. VAT)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with 3VA2 Molded Case Circuit Breakers
  • RS Stock No. 629-335
  • Mfr. Part No. 8GK6724-4KK23
Each
PHP15,188.36(exc. VAT)
Temporarily out of stock
Weidmüller Surge Arrester, 20kA, 1000V dc, Screw Mount Mount
  • RS Stock No. 285-5297
  • Mfr. Part No. 2764140000
Each
PHP37,189.49(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 16A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 201-370
  • Mfr. Part No. 2CDS383103R0164
Each
PHP38,501.66(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 12.5A, Fixed Mount
  • RS Stock No. 260-9494
  • Mfr. Part No. C10N3MA013
Each
PHP43,353.86(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 6A Curve C, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-242
  • Mfr. Part No. 2CDS274001R0064
Each
PHP33,218.42(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 6A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-967
  • Mfr. Part No. 2CDS274001R0061
Each
PHP41,190.87(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 8A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 244-031
  • Mfr. Part No. 102186 FAZ-D8/2-NA
Each
PHP11,729.74(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Trip Unit for use with ComPacT NSX100
  • RS Stock No. 655-002
  • Mfr. Part No. C1634A160
Each
PHP97,427.45(exc. VAT)
Temporarily out of stock
Eaton xEffect - FRCmM RCCB, 80A, 2 Pole, 100mA, Type A, 240/415V ac
  • RS Stock No. 123-215
  • Mfr. Part No. 170276 FRCMM-80/2/01-A
Each
PHP26,134.29(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 65V dc Voltage Rating DIN Rail, 200mA Current Rating
  • RS Stock No. 135-425
  • Mfr. Part No. 0914015
1 Pack of 6
PHP30,490.91(exc. VAT)
Temporarily out of stock
Hager CDC RCD Switch, 25A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 251-2025
  • Mfr. Part No. CDC722F
Each
PHP7,972.71(exc. VAT)
In Stock
WJ Furse Copper Earth Bar L. 750mm x W. 90mm x H. 90mm 12 Ways
  • RS Stock No. 124-2499
  • Mfr. Part No. 7TCA083670R0690 LK245-12
Each
PHP24,957.89(exc. VAT)
1
199
1676
Results per page

Related links