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

1622 of 999+
Temporarily out of stock
Eaton xEffect - FBSmV RCCB, 63A, 3 Pole, 300mA, 240/415V ac
  • RS Stock No. 123-170
  • Mfr. Part No. 170165 FBSMV-63/3/03-S/A
Each
PHP21,176.68(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-445
  • Mfr. Part No. 3VA5215-6EF41-0AA0
Each
PHP175,299.12(exc. VAT)
Temporarily out of stock
Eaton IZMX40H4-P25W-1 Electronic Circuit Breaker 2.5kA IZMX/INX, 4 channels , Withdrawable
  • RS Stock No. 132-748
  • Mfr. Part No. 183800 IZMX40H4-P25W-1
Each
PHP1,953,713.37(exc. VAT)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 169-9556
  • Mfr. Part No. SS-5H-5A-BK
Each (In a Bag of 200)
PHP26.219(exc. VAT)
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 201-5395
  • Mfr. Part No. 1045379
Each
PHP31,053.06(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELHK111 3 Pole 480V ac Voltage Rating Panel Mount, 35A Current Rating
  • RS Stock No. 275-0244
  • Mfr. Part No. IELHK111-1-62F-35.0-ABE-01-V
1 Box of 5
PHP78,181.32(exc. VAT)
Temporarily out of stock
Bourns 125A Tag Fuse, 66mm, 240 V ac, 150V dc, 24.1mm
  • RS Stock No. 254-4204
  • Mfr. Part No. PF-MB1-125
Each (In a Box of 10)
PHP3,826.92(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7762
  • Mfr. Part No. C16F42D160
Each
PHP111,644.70(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , Fixed
  • RS Stock No. 127-695
  • Mfr. Part No. 183330 IZMX16B3-V16F-1
Each
PHP621,026.20(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Terminal Kit for use with INX40…3…20F, INX40…3…25F, IZMX40…3…20F, IZMX40…3…25F
  • RS Stock No. 132-610
  • Mfr. Part No. 184175 IZMX-TF403-2500F-1
Each
PHP64,611.05(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Circuit-Breaker Electronic Circuit Breaker 3.2kA , 4 channels , Fixed
  • RS Stock No. 132-763
  • Mfr. Part No. 183916 IZMX40H4-V32F-1
Each
PHP1,964,050.24(exc. VAT)
Temporarily out of stock
Siemens Alpha Cover for use with Unequipped Distribution Boards
  • RS Stock No. 216-4799
  • Mfr. Part No. 8GK4501-1KK12
Each
PHP2,310.57(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 16A, Fixed Mount
  • RS Stock No. 260-7656
  • Mfr. Part No. C11N4TM016L
Each
PHP49,233.01(exc. VAT)
Currently unavailable
Schurter SMD Non Resettable Fuse 1.5A, 32 V ac, 63V dc
  • RS Stock No. 665-7352P
  • Mfr. Part No. 3413.0117.22.
Each (Supplied on a Reel)
PHP33.996(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9644
  • Mfr. Part No. 3VA11103FE420AA0
Each
PHP33,974.66(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels
  • RS Stock No. 157-363
  • Mfr. Part No. 3VA2216-8JP32-0AA0
Each
PHP205,103.78(exc. VAT)
Temporarily out of stock
ABB Tmax XT Rear Terminal for use with Tmax XT
  • RS Stock No. 237-6036
  • Mfr. Part No. 1SDA066273R1 R FP XT3-XT4 4PCS
Each
PHP6,721.04(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-768
  • Mfr. Part No. 3VA6140-7JQ41-0AA0
Each
PHP191,341.45(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3794
  • Mfr. Part No. 3VA2163-6HL42-0AA0
Each
PHP64,359.78(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4643
  • Mfr. Part No. 3VA2140-6KQ46-0AA0
Each
PHP157,177.38(exc. VAT)
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