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

132 of 999+
ABB PS2 2 Phase Busbar, 400V
  • RS Stock No. 231-9639
  • Mfr. Part No. 2CDL220001R3058 PS 2/58/30
1 Box of 1
PHP7,154.83(exc. VAT)
ABB RCBO, 50A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5199
  • Mfr. Part No. 2CSR274001R1504
Each
PHP34,845.58(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-390
  • Mfr. Part No. 113362 NZMH2-M125-SVE
Each
PHP87,826.46(exc. VAT)
Schneider Electric, Compact MCCB 3P 1.6kA, Fixed Mount
  • RS Stock No. 247-1767
  • Mfr. Part No. 33260
Each
PHP306,968.14(exc. VAT)
Mersen 100A NH Fuse, NH000, 690V ac
  • RS Stock No. 377-0156
  • Mfr. Part No. T322063
Each
PHP3,254.41(exc. VAT)
Siemens SENTRON 5SY Circuit Breaker, 4P, 50A Curve C, 440V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 664-327
  • Mfr. Part No. 5SY8450-7
Each
PHP33,825.28(exc. VAT)
Eaton RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type A, Type C, PXK Range
  • RS Stock No. 203-9036
  • Mfr. Part No. 236966 PXK-C25/1N/003-A
Each
PHP12,589.98(exc. VAT)
Siemens SENTRON Padlock Device
  • RS Stock No. 277-0870
  • Mfr. Part No. 3WA9111-0BA84
Each
PHP44,621.86(exc. VAT)
Miniature circuit breaker, 32 A, 1p
  • RS Stock No. 611-275
  • Mfr. Part No. PLSM-D32-Q-MW
Each
PHP2,786.73(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 231-439
  • Mfr. Part No. 107616 NZMB2-AF40-BT-NA
Each
PHP40,980.79(exc. VAT)
Schneider Electric Communication Module for use with ComPact NS630b to NS1600 Series Circuit Breaker
  • RS Stock No. 247-1860
  • Mfr. Part No. 33702
Each
PHP64,272.22(exc. VAT)
ABB 250A Tag Fuse, 150 x 40 x 72mm, 690V
  • RS Stock No. 250-4474
  • Mfr. Part No. 1SCA022701R0700
1 Box of 3
PHP6,298.80(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 229-543
  • Mfr. Part No. 113226 NZMC2-S125-SVE
Each
PHP65,906.50(exc. VAT)
SIBA 250A NH Fuse, NH1, 500V ac
  • RS Stock No. 543-9920
  • Mfr. Part No. 4184219
Each
PHP1,059.09(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 40A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-393
  • Mfr. Part No. 3VA5140-6ED21-1AA0
Each
PHP27,977.77(exc. VAT)
Littelfuse 3A Resettable Fuse, 72V
  • RS Stock No. 517-6742
  • Mfr. Part No. RXEF300
Each (In a Pack of 10)
PHP43.164(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-459
  • Mfr. Part No. 3VA5110-4ED31-1AA0
Each
PHP44,441.74(exc. VAT)
Legrand Single Phase Surge Arrester, 12kA, 1.2kV, DIN Rail Mount
  • RS Stock No. 266-0220
  • Mfr. Part No. 0 039 51
Each
PHP36,434.66(exc. VAT)
ABB Plastic Consumer Unit, IP65 1SLM006501A
  • RS Stock No. 286-4982
  • Mfr. Part No. 1SLM006501A2216
Each
PHP8,689.73(exc. VAT)
Schneider Electric IKQ RCD, 80A, 4 Pole, 30mA, 400V ac
  • RS Stock No. 339-382
  • Mfr. Part No. SED80034
Each
PHP28,644.18(exc. VAT)
1
132
1676
Results per page

Related links