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

319 of 999+
In Stock
Panasonic SMD Non Resettable Fuse 500mA, 32V dc
  • RS Stock No. 759-4767P
  • Mfr. Part No. ERBRE0R50V
Each (Supplied on a Reel)
PHP13.662(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELBXK1 Single Pole Panel Mount, 80A Current Rating
  • RS Stock No. 275-0227
  • Mfr. Part No. IELBXK1-1REG4-52-80.0-A-M3-V
1 Box of 5
PHP42,082.92(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Acti9 Reflex MCB, 4P, 25A Curve B, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 354-359
  • Mfr. Part No. A9C61425
Each
PHP33,351.33(exc. VAT)
Temporarily out of stock
ABB Front Terminal for use with S6 800, T6 800
  • RS Stock No. 250-4504
  • Mfr. Part No. 1SDA023384R1
Each
PHP18,247.75(exc. VAT)
In Stock
Schneider Electric PrismaSeT Busbar
  • RS Stock No. 130-806
  • Mfr. Part No. LVS04495
Each
PHP70,063.98(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 3VA9 Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 218-1863
  • Mfr. Part No. 3VA9503-0JB32
Each
PHP17,635.98(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 9 kA, Plug In
  • RS Stock No. 240-822
  • Mfr. Part No. 192345 NZMH3-PX250-SVE
Each
PHP253,215.85(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 428-728
  • Mfr. Part No. C100L420FM
Each
PHP1,090,650.66(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar
  • RS Stock No. 744-6992
  • Mfr. Part No. LAD9P32
Each
PHP1,389.48(exc. VAT)
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 4A, 63V
  • RS Stock No. 252-2204
Each (In a Pack of 50)
PHP11.592(exc. VAT)
Temporarily out of stock
Siemens 315A Tag Fuse, 135mm, 690V
  • RS Stock No. 608-815
  • Mfr. Part No. 3NE8230-0MK
1 Pack of 3
PHP21,791.99(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-958
  • Mfr. Part No. 3VA6110-6HL41-0AA0
Each
PHP89,439.30(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 250-068
  • Mfr. Part No. 3VA6580-7JQ46-2AA0
Each
PHP865,068.62(exc. VAT)
In Stock
Eaton 25A Tag Fuse, 22 x 86mm, 0.46/0.69kV, 73mm
  • RS Stock No. 260-694
  • Mfr. Part No. TIA25
1 Pack of 20
PHP15,845.13(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-344
  • Mfr. Part No. 3VA6560-5JQ42-2AA0
Each
PHP542,500.66(exc. VAT)
Temporarily out of stock
160A Tag Fuse, 40 x 192mm, 0.66/1.5kV
  • RS Stock No. 262-600
  • Mfr. Part No. TFC160
Each
PHP20,571.46(exc. VAT)
Temporarily out of stock
Eaton 6A Tag Fuse, 22 x 86mm, 690V, 73mm
  • RS Stock No. 261-418
  • Mfr. Part No. TIA6 6A 690V AC / 460V DC gG INDUSTRIAL FUSE
1 Pack of 20
PHP13,385.37(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 1.6A, 125V
  • RS Stock No. 738-2930
  • Mfr. Part No. 045101.6MRL
Each (In a Pack of 10)
PHP78.091(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 4 channels
  • RS Stock No. 156-788
  • Mfr. Part No. 3VA2450-5JP42-0AA0
Each
PHP316,509.11(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4220 Circuit Breaker, 2P, 20A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 153-528
  • Mfr. Part No. 5SY4220-6
Each
PHP4,809.11(exc. VAT)
1
319
1676
Results per page

Related links