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

163 of 999+
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 250A, Fixed Mount
  • RS Stock No. 221-1066
  • Mfr. Part No. LV433856
Each
PHP334,581.40(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4L MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6730
  • Mfr. Part No. 1SDA068387R1 XT4L 160 TMA 100A FF
Each
PHP92,618.12(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 2A, 250V
  • RS Stock No. 895-1596P
  • Mfr. Part No. 0443002.DR
Each (Supplied on a Reel)
PHP100.00(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 400/630 Circuit Breakers
  • RS Stock No. 260-8065
  • Mfr. Part No. C4031M320
Each
PHP71,432.66(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 347-118
  • Mfr. Part No. C25F6TM125
Each
PHP166,820.42(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 229-473
  • Mfr. Part No. 110876 NZMN3-4-VE400-AVE
Each
PHP276,455.40(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 236-6821
  • Mfr. Part No. 1SDA068571R1 XT4L 160 Ekip LS/I 40A FF
Each
PHP115,791.45(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 32A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-8077
  • Mfr. Part No. LV426122
Each
PHP27,090.65(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 32A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 654-997
  • Mfr. Part No. C11N6TM032L
Each
PHP42,532.95(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 229-499
  • Mfr. Part No. 111656 NZMN3-AE630-BT
Each
PHP230,856.02(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 6A, Type Z, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-030
  • Mfr. Part No. 2CDS271061R0378
Each
PHP11,583.35(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 429-418
  • Mfr. Part No. C40N37E400
Each
PHP726,020.57(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 4P, 16A Curve D, 440V AC, 72V DC, 30 kA Breaking Capacity
  • RS Stock No. 664-321
  • Mfr. Part No. 5SY8416-8BB08
Each
PHP12,987.14(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4L MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-6827
  • Mfr. Part No. 1SDA068577R1 XT4L 160 Ekip I 63A FF
Each
PHP109,983.54(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 16A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9470
  • Mfr. Part No. 3VA1196-6ED46-0AA0
Each
PHP36,427.74(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, 1.5kV, DIN Rail Mount
  • RS Stock No. 277-8607
  • Mfr. Part No. 1088567
Each
PHP26,374.62(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 346-743
  • Mfr. Part No. C100N45AFM
Each
PHP893,012.54(exc. VAT)
In Stock
Mersen 50A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 238-4013
  • Mfr. Part No. E220965
Each
PHP2,940.55(exc. VAT)
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - BGL 4 Pole 525V Voltage Rating Clip-On, 35A Current
  • RS Stock No. 358-216
  • Mfr. Part No. BGL46035LU
Each
PHP94,116.53(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-6499
  • Mfr. Part No. 1SDA067955R1 XT2L 160 Ekip I 63A FF
Each
PHP65,604.02(exc. VAT)
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