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

169 of 999+
Better World
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-326
  • Mfr. Part No. 3VA6460-7KT41-0AA0
Each
PHP458,926.23(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 239-824
  • Mfr. Part No. 191621 NZMN2-VX250-SVE
Each
PHP122,575.82(exc. VAT)
Hager BFF RCCB, 63A, 2 Pole, 300mA, Type F
  • RS Stock No. 602-061
  • Mfr. Part No. BFF263
Each
PHP42,255.79(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3802
  • Mfr. Part No. 3VA2325-5KP42-0AA0
Each
PHP184,195.58(exc. VAT)
ABB RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 181-4373
  • Mfr. Part No. 2CSA255103R1164 DS-ARC1 C16 A30
Each
PHP20,926.58(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4095
  • Mfr. Part No. 3VA2116-7HM46-0AA0
Each
PHP145,761.78(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 209-5064
  • Mfr. Part No. 3VA1196-6ED32-0AA0
Each
PHP19,605.61(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5116
  • Mfr. Part No. 3VA2110-5HL46-0AA0
Each
PHP52,111.79(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4056
  • Mfr. Part No. 3VA2116-0HM46-0AA0
Each
PHP171,062.17(exc. VAT)
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 5A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 248-001
  • Mfr. Part No. 103046 NZMH2-S5-CNA
Each
PHP42,886.88(exc. VAT)
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 33A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 235-185
  • Mfr. Part No. 103051 NZMH2-S33-CNA
Each
PHP42,886.88(exc. VAT)
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 2m, 400A, Canalis KS Series
  • RS Stock No. 211-0464
  • Mfr. Part No. KSA400ED4208
Each
PHP74,988.42(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 3P+N 320A, Fixed Mount
  • RS Stock No. 250-4170
  • Mfr. Part No. 1SDA054442R1
Each
PHP249,646.37(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 243-025
  • Mfr. Part No. 191577 NZMN3-VX250-AVE
Each
PHP203,877.61(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 231-356
  • Mfr. Part No. 113574 NZMH3-VE400-T-AVE
Each
PHP285,032.78(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 450A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 246-909
  • Mfr. Part No. 192339 NZMH3-PMX450-AVE
Each
PHP281,367.23(exc. VAT)
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 15A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 231-191
  • Mfr. Part No. 107611 NZMB2-AF15-BT-NA
Each
PHP39,367.95(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 243-045
  • Mfr. Part No. 191637 NZMN2-4-VX250-SVE
Each
PHP159,671.14(exc. VAT)
Eaton MCB, 3P, 16A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 241-182
  • Mfr. Part No. 101342 PLI-C16/3N
Each
PHP11,656.43(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 35A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-365
  • Mfr. Part No. 3VA5135-5EC31-1AA0
Each
PHP27,827.72(exc. VAT)
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