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

33476 Products showing for Fuses & Circuit Breakers

1669 of 999+
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 1P 125A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-683
  • Mfr. Part No. BGF16125
Each
PHP67,240.76(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 90A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-695
  • Mfr. Part No. 3VA5290-7GD41-2AA0
Each
PHP112,898.79(exc. VAT)
Temporarily out of stock
Siemens SENTRON Undervoltage Release for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 265-656
  • Mfr. Part No. 3VW9011-0AE04
Each
PHP27,418.28(exc. VAT)
Temporarily out of stock
Socomec 80A Tag Fuse, NH00, 1kV
  • RS Stock No. 252-5301
  • Mfr. Part No. 170M2680
Each (In a Pack of 6)
PHP5,529.39(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric TeSys Mounting Plate for use with TeSys D LRD3
  • RS Stock No. 212-0202
  • Mfr. Part No. LA7D902
Each
PHP1,623.11(exc. VAT)
Temporarily out of stock
Schneider Electric Surge Arrester, 100kA, DIN Rail Mount
  • RS Stock No. 247-1639
  • Mfr. Part No. 16332
Each
PHP278,980.93(exc. VAT)
Temporarily out of stock
20A NH Fuse, 51 x 21 x 79mm, 400V ac
  • RS Stock No. 252-912
  • Mfr. Part No. 20NHG000B-400
1 Pack of 3
PHP968.80(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 4P 35A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-688
  • Mfr. Part No. BGF46035
Each
PHP91,550.65(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9779
  • Mfr. Part No. 3VA1116-4GE46-0AA0
Each
PHP68,302.92(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4N MCCB 3P 40A, Fixed Mount
  • RS Stock No. 236-6605
  • Mfr. Part No. 1SDA068127R1 XT4N 160 Ekip I 40A FF
Each
PHP49,545.67(exc. VAT)
Temporarily out of stock
Socomec 200 Centred Tag Fuse, S2
  • RS Stock No. 223-2857
  • Mfr. Part No. 67220200
Each (In a Pack of 3)
PHP2,012.343(exc. VAT)
Temporarily out of stock
Hager Thermal Circuit Breaker - HAD 4P Pole Fixed, 30A Current Rating
  • RS Stock No. 602-099
  • Mfr. Part No. HDA430
Each
PHP19,974.67(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-414
  • Mfr. Part No. 3VA5210-7GD41-2AA0
Each
PHP122,928.56(exc. VAT)
In Stock
RS PRO 63A Solid Link for A3 Fuses
  • RS Stock No. 242-1061
Each (In a Pack of 5)
PHP282.568(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 236-6807
  • Mfr. Part No. 1SDA068551R1 XT4L 160 Ekip LS/I 40A FF
Each
PHP77,142.35(exc. VAT)
In Stock
Bourns Surface Mount Fuse 5A, 65V dc
  • RS Stock No. 245-9227P
  • Mfr. Part No. SF-1206F500M-2
Each (Supplied on a Reel)
PHP30.294(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Fixed Mount
  • RS Stock No. 260-8254
  • Mfr. Part No. C63V42D630
Each
PHP418,165.20(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller xPole 4 Phase Busbar, 415V, 17.8mm Pitch
  • RS Stock No. 230-805
  • Mfr. Part No. 116880 EVG-16/4PHAS/L-N-X/6PC
Each
PHP2,338.62(exc. VAT)
Temporarily out of stock
Siemens ALPHA Busbar Support for use with 630, 1250, ALPHA 400
  • RS Stock No. 629-032
  • Mfr. Part No. 8GK9710-0KK01
Each
PHP4,050.23(exc. VAT)
In Stock
Eaton 400A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 182-1583
  • Mfr. Part No. 170M3819D
Each
PHP15,308.18(exc. VAT)
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