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

33503 Products showing for Fuses & Circuit Breakers

324 of 999+
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-279
  • Mfr. Part No. 3VA6210-7HL41-0AA0
Each
PHP203,071.19(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 70A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 269-608
  • Mfr. Part No. 3VA5270-5ED61-0AA0
Each
PHP51,097.70(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4L MCCB 4P 40A, Fixed Mount
  • RS Stock No. 236-6831
  • Mfr. Part No. 1SDA068581R1 XT4L 160 Ekip LSI 40A FF
Each
PHP214,165.75(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Mechanical Interlock for use with INX16…, IZMX16…
  • RS Stock No. 132-799
  • Mfr. Part No. 184207 IZMX-MIL3133C-F16-1
Each
PHP39,539.97(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA2 100/160/250
  • RS Stock No. 210-9360
  • Mfr. Part No. 3VA9263-0QB00
Each
PHP3,688.09(exc. VAT)
Temporarily out of stock
Eaton 200A NH Fuse, 63 x 40 x 135mm, 500V ac
  • RS Stock No. 250-838
  • Mfr. Part No. 200NHG1BI NH FUSE 200A 500V GL/GG SIZE 1
1 Pack of 3
PHP2,339.07(exc. VAT)
In Stock
Siemens 10A DII Diazed Fuse, E16 Thread Size, gG, 500V ac
  • RS Stock No. 395-765
  • Mfr. Part No. 5SA251
1 Pack of 10
PHP3,663.11(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 36 kA
  • RS Stock No. 210-1627
  • Mfr. Part No. 3VA1116-4EE46-0AA0
Each
PHP68,302.92(exc. VAT)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with 3VA1 100/160
  • RS Stock No. 269-7113
  • Mfr. Part No. 3VA9154-0QD00
Each (In a Pack of 4)
PHP693.97(exc. VAT)
Temporarily out of stock
Siemens ALPHA Din Support for use with DIN Support
  • RS Stock No. 203-3263
  • Mfr. Part No. 8GK9910-0KK24
Each (In a Pack of 100)
PHP129.161(exc. VAT)
In Stock
Contactum RCBO, 40A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type B, CCPBR Range
  • RS Stock No. 240-6389
  • Mfr. Part No. CCPBR0640AB
Each
PHP2,267.88(exc. VAT)
In Stock
Better World
Schneider Electric Vigi iTG40 RCD, 40A, 3+N Pole, 30mA
  • RS Stock No. 191-6132
  • Mfr. Part No. A9Y12440
Each
PHP31,315.34(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 4P, 13A Curve B, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-264
  • Mfr. Part No. 2CCS864001R0135
Each
PHP30,232.02(exc. VAT)
Temporarily out of stock
Schneider Electric PowerPact Circuit Breaker - PowerPacT 3 Pole 347V ac Voltage Rating Clip-On, 35A Current Rating
  • RS Stock No. 205-238
  • Mfr. Part No. BDF36035
Each
PHP58,178.78(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 30A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 248-698
  • Mfr. Part No. 102113 FAZ-D30/1-NA
Each
PHP4,904.50(exc. VAT)
In Stock
Siemens 250A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 210-6958
  • Mfr. Part No. 3NE1227-2
Each (In a Pack of 3)
PHP21,199.167(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 229-934
  • Mfr. Part No. 113354 NZMH2-M20-SVE
Each
PHP46,332.49(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY6 MCB, 4P, 10A Curve B, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-383
  • Mfr. Part No. 5SY6610-6
Each
PHP8,364.60(exc. VAT)
In Stock
Eaton 160A NH Fuse, NH0, 500V ac
  • RS Stock No. 181-8535
  • Mfr. Part No. 160NHG0B
1 Box of 3
PHP1,509.03(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-930
  • Mfr. Part No. 3VA6115-7HL31-2AA0
Each
PHP127,560.97(exc. VAT)
1
324
1676
Results per page

Related links