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

160 of 999+
Better World
Eaton 450A Tag Fuse, 205 x 50 x 60mm, 1.5kV, 170mm
  • RS Stock No. 282-6248
  • Mfr. Part No. PV-450A-3L-B-15
Each
PHP35,952.44(exc. VAT)
Eaton 40A NH Fuse, 51 x 21 x 79mm, 690V ac
  • RS Stock No. 261-582
  • Mfr. Part No. 40NHM000B-690 NH FUSE 40A 690V aM SIZE 000
1 Pack of 3
PHP1,841.85(exc. VAT)
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-684
  • Mfr. Part No. A9DC4620
Each
PHP26,111.49(exc. VAT)
Better World
ABB, XT2H MCCB 3P 25A, Fixed Mount
  • RS Stock No. 236-7533
  • Mfr. Part No. 1SDA067868R1 XT2H 160 Ekip LSI 25A FF
Each
PHP90,462.72(exc. VAT)
Distribution Board 400x500x240mm
  • RS Stock No. 577-378
  • Mfr. Part No. WDB 6
Each
PHP5,120.08(exc. VAT)
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 2A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-286
  • Mfr. Part No. 5SL6002-7MF
Each
PHP19,164.67(exc. VAT)
ABB RCBO, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 136-7777
  • Mfr. Part No. 2CSR275151R1105 DSE201 M B10 A30 - N Blue
Each
PHP8,960.15(exc. VAT)
Eaton 25A British Standard Fuse, F1, 550V ac
  • RS Stock No. 414-077
  • Mfr. Part No. NSD25
Each (In a Pack of 5)
PHP372.534(exc. VAT)
20A NH Fuse, 51 x 21 x 79mm, 400V ac
  • RS Stock No. 252-912
  • Mfr. Part No. 20NHG000B-400
1 Pack of 3
PHP968.80(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9808
  • Mfr. Part No. 3VA1116-6GF46-0AA0
Each
PHP71,717.33(exc. VAT)
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0296
  • Mfr. Part No. 8GK1062-2KK11
Each
PHP36,911.88(exc. VAT)
Lovato Single Phase Surge Protector, 60kA, DIN Rail Mount
  • RS Stock No. 248-5656
  • Mfr. Part No. SA02PA320R
Each
PHP20,072.80(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 55 kA
  • RS Stock No. 209-6818
  • Mfr. Part No. 3VA1140-5EE32-0AA0
Each
PHP24,325.98(exc. VAT)
ABB S800S MCB, 1P, 13A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-863
  • Mfr. Part No. 2CCS861001R0131
Each
PHP5,852.23(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 16A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1686
  • Mfr. Part No. 3VA1196-5EE46-0AA0
Each
PHP34,195.51(exc. VAT)
Schneider Electric Multi9 M9F1 MCB, 2P, 10A Curve D, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-012
  • Mfr. Part No. M9F12210
Each
PHP8,566.96(exc. VAT)
Siemens Push Button Circuit Trip
  • RS Stock No. 211-3832
  • Mfr. Part No. 5TE4830
Each
PHP4,531.82(exc. VAT)
Schneider Electric Adapter for use with ComPact NS630b → 1600, MasterPact NT Circuit Breaker
  • RS Stock No. 247-1852
  • Mfr. Part No. 33643
Each
PHP37,509.17(exc. VAT)
Siemens 8GF5761 Busbar Cover
  • RS Stock No. 116-450
  • Mfr. Part No. 8GF5761
Each
PHP10,117.88(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-302
  • Mfr. Part No. 3VA6440-6KL31-0AA0
Each
PHP315,236.87(exc. VAT)
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