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

228 of 999+
20A NH Fuse, 51 x 21 x 79mm, 400V ac
  • RS Stock No. 252-913
  • Mfr. Part No. 20NHG000BI-400
1 Pack of 3
PHP1,063.59(exc. VAT)
ABB S301 MCB, 1P, 6A Curve B, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-262
  • Mfr. Part No. 2CDS381001R0065
Each
PHP11,036.58(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IULNK1 Single Pole Panel Mount, 80A Current Rating
  • RS Stock No. 275-0327
  • Mfr. Part No. IULNK1-1-52-80.0
1 Box of 5
PHP34,869.54(exc. VAT)
Eaton xEffect - FBSmV RCCB, 63A, 4 Pole, 30mA, Type A, 240/415V ac
  • RS Stock No. 123-536
  • Mfr. Part No. 170228 FBSMV-63/4/003-A
Each
PHP15,844.45(exc. VAT)
Schneider Electric PowerPact Circuit Breaker - PowerPacT 4 Pole 347V ac Voltage Rating Clip-On, 110A Current Rating
  • RS Stock No. 205-364
  • Mfr. Part No. BDF46110
Each
PHP120,754.50(exc. VAT)
Phoenix Contact Thermal Circuit Breaker - TCP Single Pole 32V dc Voltage Rating Base Mounting, 30A Current Rating
  • RS Stock No. 558-695
  • Mfr. Part No. 1499946
1 Pack of 100
PHP48,913.33(exc. VAT)
Sato Parts 10A PCB Mount Fuse Holder for 6.3 x 32 mm, 6.35 x 30 x 6.35 x 31.8 mm Fuse, 250V
  • RS Stock No. 229-4964
  • Mfr. Part No. F-200-N
Each
PHP111.32(exc. VAT)
Schneider Electric Multi9 M9F MCB, 1P, 15A, Type Z, 240V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 288-1401
  • Mfr. Part No. M9F44115
Each
PHP7,249.83(exc. VAT)
Better World
Siemens, SENTRON MCCB 2P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9386
  • Mfr. Part No. 3VA1163-4ED22-0AA0
Each
PHP19,401.20(exc. VAT)
Schneider Electric, Powerpact Circuit breaker 1P 35A, Breaking Capacity 25 kA, Clip-On
  • RS Stock No. 444-230
  • Mfr. Part No. BJL16035
Each
PHP50,014.16(exc. VAT)
Finder Busbar
  • RS Stock No. 386-4453
  • Mfr. Part No. 093.20
Each
PHP165.57(exc. VAT)
Siemens SENTRON Wire Connector for use with 3VA2 100/160/250
  • RS Stock No. 210-9364
  • Mfr. Part No. 3VA9264-0JC13
Each
PHP9,896.12(exc. VAT)
Siemens SENTRON Interlock for use with 3VA51-54, 3VA61-64
  • RS Stock No. 161-610
  • Mfr. Part No. 3VA9078-0VM10
Each
PHP30,570.65(exc. VAT)
Siemens 125A NH Fuse, NH2, 500V ac
  • RS Stock No. 396-051
  • Mfr. Part No. 3NA3232
Each (In a Pack of 3)
PHP1,714.463(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 156-652
  • Mfr. Part No. 3VA2216-5KQ42-0AA0
Each
PHP236,828.61(exc. VAT)
Eaton 250A Centred Tag Fuse, NH1, 690V ac
  • RS Stock No. 703-8800
  • Mfr. Part No. 250NHG1B-690
Each
PHP986.69(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 428-722
  • Mfr. Part No. C100H360FM
Each
PHP1,017,869.06(exc. VAT)
Siemens 200A NH Fuse, NH1, 500V ac
  • RS Stock No. 396-083
  • Mfr. Part No. 3NA3140
Each (In a Pack of 3)
PHP1,482.02(exc. VAT)
Eaton 450A Tag Fuse, 660V ac, 133/184mm
  • RS Stock No. 261-695
  • Mfr. Part No. TTM450
Each
PHP17,924.40(exc. VAT)
Littelfuse 200A Blue Bolt Down Car Fuse, 32V dc
  • RS Stock No. 787-4410
  • Mfr. Part No. 0298200.ZXEH
Each
PHP346.90(exc. VAT)
1
228
1676
Results per page

Related links