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

170 of 999+
Temporarily out of stock
ABB S800U MCB, 2P, 25A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-402
  • Mfr. Part No. 2CCS862017R0517
Each
PHP17,142.33(exc. VAT)
In Stock
Penta Stand for Fuses Support Stand
  • RS Stock No. 253-9431
  • Mfr. Part No. TB11D
Each
PHP3,403.46(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-135
  • Mfr. Part No. 113280 NZMN2-4-VE250-SVE
Each
PHP165,389.39(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 231-354
  • Mfr. Part No. 113571 NZMH3-AE400-T-AVE
Each
PHP275,648.98(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 16A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9447
  • Mfr. Part No. 3VA1196-3GD42-0AA0
Each
PHP29,126.30(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 229-414
  • Mfr. Part No. 107612 NZMB2-AF20-BT-NA
Each
PHP40,980.79(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 40A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9314
  • Mfr. Part No. 3VA1140-3GD42-0AA0
Each
PHP28,787.19(exc. VAT)
Temporarily out of stock
Penta Earth Rod
  • RS Stock No. 248-9890
  • Mfr. Part No. PCT120SJ
Each
PHP87,598.16(exc. VAT)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 630A, Fixed Mount
  • RS Stock No. 254-6365
  • Mfr. Part No. C6332D630
Each
PHP90,544.49(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-065
  • Mfr. Part No. 3VA6110-8HM31-2AA0
Each
PHP128,294.08(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 25A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9572
  • Mfr. Part No. 3VA10252ED460AA0
Each
PHP26,762.85(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 63A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9401
  • Mfr. Part No. 3VA1163-6ED46-0AA0
Each
PHP36,427.74(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 630A, Breaking Capacity 50kA
  • RS Stock No. 260-9806
  • Mfr. Part No. LV563511
Each
PHP202,922.23(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4253
  • Mfr. Part No. 1SDA054551R1
Each
PHP191,082.74(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-6506
  • Mfr. Part No. 1SDA067964R1 XT2L 160 Ekip LSI 160A FF
Each
PHP132,216.54(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 654-999
  • Mfr. Part No. C12B6TM160L
Each
PHP78,057.83(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 50A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-148
  • Mfr. Part No. 113369 NZMH2-4-A50-SVE
Each
PHP61,801.09(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-471
  • Mfr. Part No. 3VA5110-5EC41-0AA0
Each
PHP46,204.26(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7315
  • Mfr. Part No. 1SDA067494R1 MA 100 Im=600...1000 XT4 3
Each
PHP34,063.17(exc. VAT)
Temporarily out of stock
ABB SU 200 M Circuit Breaker, 2P, 25A Curve K, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6396
  • Mfr. Part No. 2CDS272337R0517
Each
PHP8,280.17(exc. VAT)
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