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

1650 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4015
  • Mfr. Part No. 3VA2110-8HK36-0AA0
Each
PHP69,077.32(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with XT4
  • RS Stock No. 236-7308
  • Mfr. Part No. 1SDA067481R1 TMA 125-1250 XT4 4p
Each
PHP43,725.78(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 127-700
  • Mfr. Part No. 183334 IZMX16N3-V12F-1
Each
PHP424,306.80(exc. VAT)
Temporarily out of stock
Lovato 2 Phase Surge Protector, 50kA
  • RS Stock No. 216-8299
  • Mfr. Part No. SG22PA300
Each
PHP13,489.90(exc. VAT)
Temporarily out of stock
Siemens 160A Tag Fuse, 149 x 72 x 62mm, 400V
  • RS Stock No. 269-7030
  • Mfr. Part No. 3NA3236-4KK04
Each
PHP15,597.42(exc. VAT)
In Stock
Eaton 10A Bolted Tag Fuse, 240V ac, 35mm
  • RS Stock No. 181-8923
  • Mfr. Part No. STD10
Each
PHP266.81(exc. VAT)
In Stock
RS PRO SMD Non-Resettable Surface Mount Fuse 1.5A, 63V
  • RS Stock No. 252-2185
Each (In a Pack of 50)
PHP11.592(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 147-920
  • Mfr. Part No. 3VA5210-1BB41-0AA0
Each
PHP103,827.97(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7857
  • Mfr. Part No. C25B32D160
Each
PHP101,363.33(exc. VAT)
Unavailable
Lovato RCBO, 20A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C
  • RS Stock No. 825-6046
  • Mfr. Part No. P1RB1NC20AC300
Each
PHP6,359.52(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3675
  • Mfr. Part No. 3VA2025-7HN42-0AA0
Each
PHP96,491.03(exc. VAT)
Temporarily out of stock
Siemens SENTRON 3VA9 Mounting Frame for use with 3VA2 100/160/250
  • RS Stock No. 218-1807
  • Mfr. Part No. 3VA9163-0SB10
Each
PHP3,181.33(exc. VAT)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6160
  • Mfr. Part No. 1SDA066920R1 FC Cu XT4 8PCS
Each
PHP5,918.88(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELHK111 3 Pole Panel Mount, 50A Current Rating
  • RS Stock No. 275-0241
  • Mfr. Part No. IELHK111-1-61F-50.0-A-01-V
Each
PHP15,082.45(exc. VAT)
In Stock
Bourns 0.35A Resettable Fuse, 6V
  • RS Stock No. 647-8392
  • Mfr. Part No. MF-USMF035-2
Each (In a Pack of 10)
PHP34.452(exc. VAT)
Temporarily out of stock
Siemens ALPHA Connecting Terminals for use with ALPHA 400-ZS
  • RS Stock No. 216-5993
  • Mfr. Part No. 8GS4034-2
Each
PHP2,045.08(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 2A, 250 V ac, 125V dc
  • RS Stock No. 703-2758
  • Mfr. Part No. 3404.2419.22
Each (In a Bag of 10)
PHP72.187(exc. VAT)
Temporarily out of stock
Siemens 32A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6984
  • Mfr. Part No. 3NE8801-0MK
Each (In a Pack of 3)
PHP3,681.413(exc. VAT)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7300
  • Mfr. Part No. 1SDA067474R1 TMA 80-800 XT4 4p
Each
PHP43,725.78(exc. VAT)
Temporarily out of stock
Eaton NZMC3 Electronic Circuit Breaker 320A , 4 channels , Fixed
  • RS Stock No. 121-017
  • Mfr. Part No. 168464 NZMC3-4-A320-SVE
Each
PHP208,624.90(exc. VAT)
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