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

175 of 999+
Temporarily out of stock
Better World
ABB, XT2N MCCB 4P 50A, Fixed Mount
  • RS Stock No. 236-7464
  • Mfr. Part No. 1SDA067732R1 XT2N 160 TMG 50A FF
Each
PHP33,653.16(exc. VAT)
In Stock
Better World
Schneider Electric MCCB 4P 0 → 160A, Fixed Mount
  • RS Stock No. 178-7890
  • Mfr. Part No. LV426941
Each
PHP5,019.27(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 100A, 4 Pole, 300mA, Type A, 277 V ac, 480 V ac
  • RS Stock No. 177-5093
  • Mfr. Part No. 2CSF204201R3900 F204 A S-100/0,3
Each
PHP17,854.02(exc. VAT)
In Stock
ABB Tmax XT Rotary Handle for use with Tmax XT
  • RS Stock No. 237-6093
  • Mfr. Part No. 1SDA066482R1 RHE_EM XT2-XT4 W
Each
PHP11,092.96(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9789
  • Mfr. Part No. 3VA1116-5FF42-0AA0
Each
PHP77,330.24(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 347-109
  • Mfr. Part No. C16B44B160
Each
PHP260,967.74(exc. VAT)
In Stock
Wickmann Resettable Fuse, 125V ac/dc
  • RS Stock No. 174-0762
  • Mfr. Part No. 0251.750MAT1L
Each (In a Pack of 10)
PHP37.719(exc. VAT)
In Stock
Siemens Sentron Connecting Terminals for use with Busbar System
  • RS Stock No. 228-8257
  • Mfr. Part No. 8US1941-2AA04
Each
PHP12,646.37(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 20A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-354
  • Mfr. Part No. 2CDS272061R0204
Each
PHP13,029.99(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 45A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-647
  • Mfr. Part No. 3VA5145-6EC31-0AA0
Each
PHP32,102.70(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5191
  • Mfr. Part No. 3VA2216-6KP42-0AA0
Each
PHP182,255.43(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A IZMX/INX, 3 channels , Withdrawable
  • RS Stock No. 132-827
  • Mfr. Part No. 183587 IZMX40B3-P08W-1
Each
PHP751,460.14(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 32A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-388
  • Mfr. Part No. 113356 NZMH2-M32-SVE
Each
PHP46,332.49(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-645
  • Mfr. Part No. 3VA5145-5ED31-1AA0
Each
PHP26,927.98(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-505
  • Mfr. Part No. 3VA5220-5ED41-0AA0
Each
PHP139,537.49(exc. VAT)
Temporarily out of stock
Eaton 500A Centred Tag Fuse, NH2, 440V ac
  • RS Stock No. 182-1759
  • Mfr. Part No. 500NHG2B
Each
PHP1,981.22(exc. VAT)
In Stock
Eaton RCD, 25A, 2 Pole, 30mA, Type C, 230V
  • RS Stock No. 922-8743
  • Mfr. Part No. 236279 PKNM-25/1N/C/003-A-MW
Each
PHP9,697.86(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 4P, 10A Curve B, 440V AC, 880V DC, 15 kA Breaking Capacity
  • RS Stock No. 664-343
  • Mfr. Part No. 5SY5410-6
Each
PHP18,123.30(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-276
  • Mfr. Part No. 3VA5220-0MU31-0AA0
Each
PHP108,028.07(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2L MCCB 3P 10A, Fixed Mount
  • RS Stock No. 236-7568
  • Mfr. Part No. 1SDA067924R1 XT2L 160 Ekip LSI 10A FF
Each
PHP95,450.60(exc. VAT)
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