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
Fuses - PCB
Fuses - PCB

33502 Products showing for Fuses & Circuit Breakers

222 of 999+
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar, 230V, 35.2mm Pitch
  • RS Stock No. 187-5189
  • Mfr. Part No. 5ST3685-0
Each
PHP2,590.70(exc. VAT)
In Stock
ABB Cover for use with ABB Tmax XT3
  • RS Stock No. 831-9217
  • Mfr. Part No. 1SDA066660R1 LTC XT3 3p TERMINAL COVERS LOW 2pcs
Each (In a Pack of 2)
PHP1,417.56(exc. VAT)
In Stock
Siemens Single Phase Industrial Surge Protection, 16A, 230V (Volts), DIN Rail Mount
  • RS Stock No. 266-9590
  • Mfr. Part No. 5SY1716-4
Each
PHP2,401.48(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100 Circuit Breakers
  • RS Stock No. 260-9349
  • Mfr. Part No. C103MA007
Each
PHP7,919.11(exc. VAT)
Temporarily out of stock
ABB SU200 M MCB, 2P, 60A Curve C, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-184
  • Mfr. Part No. 2CDS272337R0604
Each
PHP28,318.52(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY6 MCB, 2P, 5A Curve C, 400V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-333
  • Mfr. Part No. 5SY6211-7
Each
PHP7,227.31(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 2P, 32A Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 203-883
  • Mfr. Part No. 2CDS272347R0537
Each
PHP29,512.32(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 110A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-186
  • Mfr. Part No. 3VA5111-4ED11-0AA0
Each
PHP17,551.53(exc. VAT)
Temporarily out of stock
Mersen 200A NH Fuse, NH1, 500V ac
  • RS Stock No. 375-9682
  • Mfr. Part No. P218766
Each
PHP1,473.44(exc. VAT)
In Stock
Eaton Eaton Moeller Door Coupling Handle for use with PKZM0
  • RS Stock No. 272-7214
  • Mfr. Part No. 106135 PKZ0-XHM
Each
PHP5,096.26(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-591
  • Mfr. Part No. 3VA6225-6HL41-0AA0
Each
PHP186,942.80(exc. VAT)
Temporarily out of stock
ABB RCBO, 50A Current Rating, 1P Poles, Type C
  • RS Stock No. 237-5230
  • Mfr. Part No. 2CSR275051R0504
Each
PHP12,136.02(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5243
  • Mfr. Part No. 3VA2463-6HN42-0AA0
Each
PHP229,600.08(exc. VAT)
Temporarily out of stock
Eaton 160A Tag Fuse, 76 x 359mm, 3.6kV
  • RS Stock No. 258-860
  • Mfr. Part No. 3.6WFGHA160
1 Pack of 3
PHP140,893.12(exc. VAT)
Temporarily out of stock
Eaton IZMX40B3-V40F-1 Electronic Circuit Breaker 4kA , Fixed
  • RS Stock No. 132-864
  • Mfr. Part No. 183709 IZMX40B3-V40F-1
Each
PHP1,953,084.88(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7750
  • Mfr. Part No. C16B4TM160
Each
PHP88,744.25(exc. VAT)
Temporarily out of stock
Eaton ZSD-K19 Distribution Board
  • RS Stock No. 127-793
  • Mfr. Part No. 183255 ZSD-K19
Each
PHP16,861.99(exc. VAT)
In Stock
Siemens Sentron Adapter for use with Busbar
  • RS Stock No. 228-8245
  • Mfr. Part No. 8US1261-5FM08
Each
PHP3,877.78(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-7453
  • Mfr. Part No. C10V35E040
Each
PHP176,839.58(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 40A, 2 Pole, 100mA, Type A, 230V ac
  • RS Stock No. 225-6104
  • Mfr. Part No. 2CSF202101R2400 F202 A-40/0.1
Each
PHP14,612.88(exc. VAT)
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