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

130 of 999+
Better World
Schneider Electric, ComPacT NSX MCCB 3P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 254-6278
  • Mfr. Part No. C10B3TM040
Each
PHP38,025.03(exc. VAT)
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 320A, Breaking Capacity 9 kA, Plug In
  • RS Stock No. 230-884
  • Mfr. Part No. 113578 NZMH3-4-A320-AVE
Each
PHP289,504.74(exc. VAT)
ABB System Pro M Compact S200M MCB, 4P, 25A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-402
  • Mfr. Part No. 2CDS274001R0251
Each
PHP41,190.87(exc. VAT)
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6292
  • Mfr. Part No. C10H3
Each
PHP30,402.80(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - 209 3 Pole 240V ac Voltage Rating Panel Mount, 30A Current Rating
  • RS Stock No. 275-0058
  • Mfr. Part No. 209-3-1-61-4-9-30-V
1 Box of 5
PHP82,076.06(exc. VAT)
Siemens 350A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6960
  • Mfr. Part No. 3NE1331-2
Each (In a Pack of 3)
PHP25,406.913(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 500A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 230-050
  • Mfr. Part No. 110860 NZMN3-A500-AVE
Each
PHP219,932.70(exc. VAT)
Eaton RCD, 16A, 2 Pole, 30mA, Type C
  • RS Stock No. 922-8721
  • Mfr. Part No. 236217 PKNM-16/1N/C/003-A-MW
Each
PHP9,624.33(exc. VAT)
Siemens 80A Centred Tag Fuse, NH1XL, 1.5kV
  • RS Stock No. 230-2984
  • Mfr. Part No. 3NE1220-5E
Each (In a Pack of 2)
PHP19,593.94(exc. VAT)
Better World
Schneider Electric RCBO, 32A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3277
  • Mfr. Part No. A9DB3732
Each
PHP49,016.46(exc. VAT)
Eaton Surge Arrester, 100kA, On Base Element Mount
  • RS Stock No. 250-9826
  • Mfr. Part No. 195238 SPRT12-350/NPE
Each
PHP38,111.15(exc. VAT)
Schneider Electric, PowerPact MCCB 2P 20A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 341-135
  • Mfr. Part No. BJF26020
Each
PHP63,100.16(exc. VAT)
Eaton 6A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8611
  • Mfr. Part No. 6NHG000B
Each
PHP330.58(exc. VAT)
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 147-230
  • Mfr. Part No. 3VA5210-6ED31-1AA0
Each
PHP80,257.01(exc. VAT)
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0840
  • Mfr. Part No. 3WA9111-0AX21
Each
PHP3,443.62(exc. VAT)
Eaton 200A Bolted Tag Fuse, A4, 350 V dc, 660V ac, 94mm
  • RS Stock No. 182-1841
  • Mfr. Part No. TFP200
Each
PHP6,538.23(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 70 kA
  • RS Stock No. 210-1622
  • Mfr. Part No. 3VA1112-6EF46-0AA0
Each
PHP66,117.54(exc. VAT)
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 212-031
  • Mfr. Part No. C1047A100
Each
PHP267,826.62(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 341-494
  • Mfr. Part No. C100H45AFM
Each
PHP1,038,410.04(exc. VAT)
ABB MCCB 3P 125A, Breaking Capacity 36 kA, 50 kA
  • RS Stock No. 192-0821
  • Mfr. Part No. 1SDA067417R1
Each
PHP45,303.58(exc. VAT)
1
130
1676
Results per page

Related links