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

226 of 999+
Hager GAMMA 1 Phase Distribution Board, 1 Way, 63 A
  • RS Stock No. 252-2608
  • Mfr. Part No. GD113A
Each
PHP3,310.23(exc. VAT)
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 201-488
  • Mfr. Part No. 1STQ007408A0000
Each
PHP79,268.76(exc. VAT)
Siemens 800A Tag Fuse, NH3, 1kV
  • RS Stock No. 608-765
  • Mfr. Part No. 3NC3338-6U
1 Pack of 3
PHP49,747.37(exc. VAT)
Mersen 16A Bolted Tag Fuse, A2, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1091
  • Mfr. Part No. L1019255 / BTIA69V16
Each (In a Pack of 10)
PHP677.517(exc. VAT)
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 1P, 20A Curve C, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-889
  • Mfr. Part No. A9K12120
Each
PHP395.29(exc. VAT)
Siemens SENTRON Closing Coil
  • RS Stock No. 277-0720
  • Mfr. Part No. 3WA9111-0AD12
Each
PHP23,547.50(exc. VAT)
Lovato P1RA RCCB, 40A, 3 Pole, 30mA, Type A, 230 V ac, 400 V ac
  • RS Stock No. 188-1680
  • Mfr. Part No. P1RA3P40A030
Each
PHP15,165.95(exc. VAT)
Phoenix Contact Surge Protector, 250V (Volts), DIN Rail Mount
  • RS Stock No. 536-006
  • Mfr. Part No. 2882925
Each
PHP11,080.81(exc. VAT)
Better World
Schneider Electric, PowerPact MCCB 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 219-8422
  • Mfr. Part No. NJJF36250TW
Each
PHP167,705.76(exc. VAT)
Siemens ALPHA Cover for use with ALPHA 1250 DIN
  • RS Stock No. 629-047
  • Mfr. Part No. 8GK9602-4KK11
Each
PHP5,855.22(exc. VAT)
Hager NGN MCB, 4P, 4A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4772
  • Mfr. Part No. NGN404
Each
PHP25,061.01(exc. VAT)
Siemens ALPHA Distribution Board, 12 Way
  • RS Stock No. 211-6076
  • Mfr. Part No. 8GB1371-2
Each
PHP7,593.02(exc. VAT)
Better World
Siemens 3VA93 RCD, 400A, 4 Pole, Type A
  • RS Stock No. 210-9375
  • Mfr. Part No. 3VA9324-0RL30
Each
PHP119,835.20(exc. VAT)
Schneider Electric, ComPacT NSX Circuit breaker 4P 50A, Breaking Capacity 90 KA, Fixed Mount
  • RS Stock No. 119-598
  • Mfr. Part No. C10N6TM050
Each
PHP81,457.03(exc. VAT)
Siemens SENTRON Plug-In Terminal for use with Circuit Breaker
  • RS Stock No. 152-516
  • Mfr. Part No. 3VA9123-0KP10
Each
PHP9,677.04(exc. VAT)
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0291
  • Mfr. Part No. 8GK1061-5KK20
Each
PHP77,382.76(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IULNK1 Single Pole Panel Mount, 5A Current Rating
  • RS Stock No. 275-0334
  • Mfr. Part No. IULNK1-1REC4-52-5.00
1 Box of 5
PHP57,903.76(exc. VAT)
Eaton PC Board Non Resettable Fuse, Radial 10A, 125V ac
  • RS Stock No. 769-3255
  • Mfr. Part No. SR-5F-10A-BK
Each (In a Pack of 5)
PHP69.10(exc. VAT)
ABB S800S MCB, 2P, 25A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-390
  • Mfr. Part No. 2CCS862001R0517
Each
PHP15,238.13(exc. VAT)
Littelfuse SMD Non Resettable Fuse 5A, 125V ac/dc
  • RS Stock No. 541-3675P
  • Mfr. Part No. 0452005.MRL
Each (Supplied on a Reel)
PHP113.68(exc. VAT)
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