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

161 of 999+
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-239
  • Mfr. Part No. 3VA6440-7JP41-0AA0
Each
PHP432,534.31(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 80A, Breaking Capacity 55 kA
  • RS Stock No. 209-7014
  • Mfr. Part No. 3VA1180-5EE46-0AA0
Each
PHP37,218.83(exc. VAT)
ABB S800S MCB, 2P, 20A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-214
  • Mfr. Part No. 2CCS862001R0201
Each
PHP14,001.15(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3779
  • Mfr. Part No. 3VA2116-6KP46-0AA0
Each
PHP189,096.87(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA
  • RS Stock No. 209-6942
  • Mfr. Part No. 3VA2325-5HN32-0AA0
Each
PHP107,318.31(exc. VAT)
Eaton NZM Modular Socket for use with Circuit Breaker
  • RS Stock No. 120-856
  • Mfr. Part No. 168472 NZM3-XSVS
Each
PHP51,656.60(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4655
  • Mfr. Part No. 3VA2140-7HM46-0AA0
Each
PHP98,141.33(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA
  • RS Stock No. 209-6907
  • Mfr. Part No. 3VA2110-5HN36-0AA0
Each
PHP51,997.38(exc. VAT)
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4825
  • Mfr. Part No. 3VA2563-7HM42-0AA0
Each
PHP360,531.96(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 500A, Breaking Capacity 4 kA, Fixed Mount
  • RS Stock No. 229-454
  • Mfr. Part No. 109667 NZMC3-A500
Each
PHP167,955.27(exc. VAT)
Schneider Electric, PowerPact Circuit breaker 3P 124A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 358-357
  • Mfr. Part No. NHDF36125TW
Each
PHP112,773.42(exc. VAT)
ABB 250V ac Push Button Push Button
  • RS Stock No. 701-8531
  • Mfr. Part No. 2CCA703161R0001 E217-16-10C
Each
PHP1,780.08(exc. VAT)
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 2A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 247-995
  • Mfr. Part No. 103026 NZMN1-S2-CNA
Each
PHP35,702.41(exc. VAT)
20A Tag Fuse, 14 x 50mm, 500V
  • RS Stock No. 252-910
  • Mfr. Part No. 20D16R FUSE 20A DI/E16 GR 500VAC
1 Pack of 10
PHP3,503.74(exc. VAT)
ABB S302 MCB, 2P, 10A Curve C, 415V AC, 125V DC, 25 kA Breaking Capacity
  • RS Stock No. 200-745
  • Mfr. Part No. 2CDS382001R0104
Each
PHP15,164.77(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5100
  • Mfr. Part No. 3VA2040-6HL36-0AA0
Each
PHP43,464.68(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3999
  • Mfr. Part No. 3VA2110-7KP42-0AA0
Each
PHP153,850.57(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA
  • RS Stock No. 210-1614
  • Mfr. Part No. 3VA1110-5EF46-0AA0
Each
PHP47,725.92(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3812
  • Mfr. Part No. 3VA2463-6HL42-0AA0
Each
PHP202,770.12(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-4948
  • Mfr. Part No. 3VA1125-5EE46-0AA0
Each
PHP34,195.51(exc. VAT)
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