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

1624 of 999+
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4760
  • Mfr. Part No. 3VA2163-7KQ32-0AA0
Each
PHP135,307.82(exc. VAT)
Siemens Sentron Series Connector for use with Busbar
  • RS Stock No. 228-8204
  • Mfr. Part No. 5ST3781-0
Each (In a Pack of 10)
PHP334.406(exc. VAT)
Schurter SMD Non Resettable Fuse 160mA, 250 V ac, 125V dc
  • RS Stock No. 703-2723P
  • Mfr. Part No. 3404.2408.22
Each (Supplied on a Reel)
PHP72.521(exc. VAT)
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7338
  • Mfr. Part No. 1SDA067523R1 Ekip I In=40A XT4 4p
Each
PHP50,082.88(exc. VAT)
Siemens Support
  • RS Stock No. 211-0128
  • Mfr. Part No. 8WH9142-0AF01
Each (In a Pack of 50)
PHP63.213(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - LELHK11 2 Pole Panel Mount, 30A Current Rating
  • RS Stock No. 275-0384
  • Mfr. Part No. LELHK11-1-62-40.0-01-V
Each
PHP15,123.64(exc. VAT)
ABB Tmax XT Rotary Handle for use with Tmax XT
  • RS Stock No. 236-6858
  • Mfr. Part No. 1SDA069059R1 RHS L XT2-XT4 F/P EMERG
Each
PHP12,947.87(exc. VAT)
Eaton RCBO, 6A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS Stock No. 123-328
  • Mfr. Part No. 170819 FRBMM-C6/2/01-A
Each
PHP9,941.53(exc. VAT)
Eaton Distribution Parts Busbar Connector
  • RS Stock No. 255-895
  • Mfr. Part No. 263945 ZV-L2/L3-36
1 Pack of 36
PHP1,275.83(exc. VAT)
Siemens 50A Centred Tag Fuse, NH1, 500V ac
  • RS Stock No. 203-2167
  • Mfr. Part No. 3NA7120
Each (In a Pack of 3)
PHP1,077.307(exc. VAT)
ABB Opening Solenoid for use with Tmax XT
  • RS Stock No. 237-6280
  • Mfr. Part No. 1SDA067209R1
Each
PHP48,842.50(exc. VAT)
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-959
  • Mfr. Part No. 3VA5212-6EC41-2AA0
Each
PHP152,590.72(exc. VAT)
Siemens, SENTRON MCCB 4P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4849
  • Mfr. Part No. 3VA2580-6HK42-0AA0
Each
PHP415,135.71(exc. VAT)
Siemens 3NP1913 Cover for use with Switch Disconnector 3NP1
  • RS Stock No. 271-9915
  • Mfr. Part No. 3NP19131CB00
Each
PHP759.15(exc. VAT)
10A Cartridge Fuse, 51 x 565mm
  • RS Stock No. 253-512
  • Mfr. Part No. 24FDIHA10
1 Pack of 3
PHP140,124.55(exc. VAT)
Eaton RCBO, 13A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A, Type D, FRBm6 Range
  • RS Stock No. 123-348
  • Mfr. Part No. 170893 FRBM6-D13/3N/003-A
Each
PHP16,267.81(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9871
  • Mfr. Part No. 3VA1125-6GD46-0AA0
Each
PHP26,735.53(exc. VAT)
Mersen 20A Bolted Tag Fuse, A2, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1101
  • Mfr. Part No. R1019260 / BTIA69V20M32
Each (In a Pack of 10)
PHP720.222(exc. VAT)
Wickmann PC Board Non Resettable Fuse, Radial 1A, 125V ac
  • RS Stock No. 226-0800P
  • Mfr. Part No. 3951100000
Each (Supplied as a Tape)
PHP87.525(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 16A, Fixed Mount
  • RS Stock No. 260-7535
  • Mfr. Part No. C11B4TM016L
Each
PHP36,785.35(exc. VAT)
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