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

1638 of 999+
Temporarily out of stock
Eaton xComfort KLV Installaton Accessory for use with Basic Device, Installation Distribution Boards, KLV for Projects
  • RS Stock No. 124-688
  • Mfr. Part No. 178885 KLV-SF4L-4PR
Each
PHP7,222.20(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 1.5A, 125V
  • RS Stock No. 738-2879
  • Mfr. Part No. 015401.5DR
Each (In a Pack of 10)
PHP123.088(exc. VAT)
In Stock
Phoenix Contact CAPAROC Extension Connector for use with CAPAROC Initial Busbars
  • RS Stock No. 252-5424
  • Mfr. Part No. 1270955
Each (In a Pack of 10)
PHP194.654(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8120
  • Mfr. Part No. C40L4
Each
PHP214,104.92(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-857
  • Mfr. Part No. 3VA6460-7KL31-0AA0
Each
PHP362,155.85(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-490
  • Mfr. Part No. 3VA6580-6KT36-0AA0
Each
PHP543,966.88(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 210-9409
  • Mfr. Part No. 3VA9504-0JB23
Each
PHP17,890.35(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 20A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-289
  • Mfr. Part No. 3VA5120-4ED11-1AA0
Each
PHP18,921.42(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9339
  • Mfr. Part No. 3VA1140-6GD46-0AA0
Each
PHP26,735.53(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3596
  • Mfr. Part No. 3VA2010-7KQ42-0AA0
Each
PHP186,998.28(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3816
  • Mfr. Part No. 3VA2040-8KP42-0AA0
Each
PHP145,761.78(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3580
  • Mfr. Part No. 3VA2010-7JP32-0AA0
Each
PHP122,669.84(exc. VAT)
Temporarily out of stock
Eaton xEffect - FBSmV RCCB, 63A, 4 Pole, 100mA, Type A, 240/415V ac
  • RS Stock No. 123-546
  • Mfr. Part No. 170236 FBSMV-63/4/1-A
Each
PHP18,858.28(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4H MCCB 3P 100A, Fixed Mount
  • RS Stock No. 236-6789
  • Mfr. Part No. 1SDA068518R1 XT4H 160 Ekip I 100A FF
Each
PHP63,592.88(exc. VAT)
Temporarily out of stock
ABB 224A Tag Fuse, 150 x 40 x 72mm, 500V
  • RS Stock No. 250-4442
  • Mfr. Part No. 1SCA022697R9010
1 Box of 3
PHP6,298.80(exc. VAT)
Temporarily out of stock
Eaton NZM Rotary Handle for use with N(S)4(-4), NZM4(-4)
  • RS Stock No. 125-990
  • Mfr. Part No. 172539 NZM4-XDKL
Each
PHP17,322.06(exc. VAT)
Temporarily out of stock
Eaton Eaton Distribution Parts 1 Phase Busbar, 415V
  • RS Stock No. 254-817
  • Mfr. Part No. 264916 Z-SV-10/1P-1TE/13
1 Pack of 10
PHP1,799.38(exc. VAT)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with XT3
  • RS Stock No. 237-6164
  • Mfr. Part No. 1SDA066931R1 MC CuAl 6x35 XT3 6PCS
Each
PHP25,585.47(exc. VAT)
Temporarily out of stock
Eaton 3.2A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-344
  • Mfr. Part No. LP-CC-3-2/10
1 Pack of 10
PHP37,490.58(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3632
  • Mfr. Part No. 3VA2025-5HM46-0AA0
Each
PHP96,491.03(exc. VAT)
1
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