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

1654 of 999+
Temporarily out of stock
ABB PS1 3 Phase Busbar, 690V ac, 17.5mm Pitch
  • RS Stock No. 711-6531
  • Mfr. Part No. 1SAM201916R1104 PS1-4-0-100
Each
PHP1,739.89(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 35A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-366
  • Mfr. Part No. 3VA5135-5EC41-0AA0
Each
PHP35,403.15(exc. VAT)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with 3VA1 100/160
  • RS Stock No. 269-7112
  • Mfr. Part No. 3VA9153-0QD00
Each (In a Pack of 3)
PHP893.567(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Busbar Trunking Fixing Bracket, Canalis KBB Series
  • RS Stock No. 219-8870
  • Mfr. Part No. KBB40ZFG1
Each (In a Pack of 10)
PHP264.837(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 220A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 249-029
  • Mfr. Part No. 192126 NZMH2-PMX220-SVE
Each
PHP176,825.89(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7736
  • Mfr. Part No. C16B34V100
Each
PHP168,773.51(exc. VAT)
Temporarily out of stock
ABB OS Switch Disconnector for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9594
  • Mfr. Part No. 1SCA022770R3490
Each
PHP20,108.58(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-515
  • Mfr. Part No. 3VA5220-5GC41-2AA0
Each
PHP132,613.73(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4812
  • Mfr. Part No. 3VA2563-6HK32-0AA0
Each
PHP237,860.62(exc. VAT)
Temporarily out of stock
ABB RCBO, 6A Current Rating, 4P Poles, Type B
  • RS Stock No. 237-5093
  • Mfr. Part No. 2CSR254001R1065
Each
PHP26,056.60(exc. VAT)
Temporarily out of stock
ABB Tmax XT Key Lock for use with Tmax XT
  • RS Stock No. 237-6116
  • Mfr. Part No. 1SDA066622R1 RHL XT1..4 RONIS RH O/F
Each
PHP6,568.70(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3780
  • Mfr. Part No. 3VA2125-5HL46-0AA0
Each
PHP52,779.55(exc. VAT)
Temporarily out of stock
Eaton IZMX40N3-P40W-1 Electronic Circuit Breaker 4kA , DIN Rail
  • RS Stock No. 132-639
  • Mfr. Part No. 183602 IZMX40N3-P40W-1
Each
PHP2,341,632.18(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 236-6607
  • Mfr. Part No. 1SDA068129R1 XT4N 160 Ekip I 100A FF
Each
PHP50,584.29(exc. VAT)
Temporarily out of stock
Eaton 600mA T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-346
  • Mfr. Part No. LP-CC-6/10
1 Pack of 10
PHP37,490.58(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 250-4104
  • Mfr. Part No. 1SDA054371R1
Each
PHP263,982.73(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100 Circuit Breakers
  • RS Stock No. 260-9353
  • Mfr. Part No. C103MG025
Each
PHP12,996.04(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 1P, 300mA Curve K, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 204-326
  • Mfr. Part No. 2CDS271347R0117
Each
PHP11,517.64(exc. VAT)
Temporarily out of stock
Eaton xE?ect - FBHmV RCCB, 125A, 2 Pole, 300mA, 240/415V ac
  • RS Stock No. 121-131
  • Mfr. Part No. 170138 FBHMV-125/2/03-S/A
Each
PHP31,301.74(exc. VAT)
Temporarily out of stock
Eaton xEffect - FBSmV RCCB, 63A, 4 Pole, 300mA, 240/415V ac
  • RS Stock No. 123-174
  • Mfr. Part No. 170169 FBSMV-63/4/03-S/A
Each
PHP21,640.46(exc. VAT)
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