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

219 of 999+
In Stock
Siemens Sentron Series Connector for use with Busbar
  • RS Stock No. 228-8213
  • Mfr. Part No. 5ST3793-1
Each (In a Pack of 3)
PHP1,245.813(exc. VAT)
In Stock
ABB RCBO, 10A Current Rating, 2P Poles, 10mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6961
  • Mfr. Part No. 2CSR255180R0104
Each
PHP13,094.68(exc. VAT)
Temporarily out of stock
Eaton 32A Fuse Holder for 116 x 157 x 162mm Fuse, 550V ac
  • RS Stock No. 261-356
  • Mfr. Part No. NSC/LINK
1 Pack of 10
PHP1,119.03(exc. VAT)
In Stock
Better World
Schneider Electric iID RCCB, 40A, 2 Pole, 30mA, Type B-SI, 230V ac
  • RS Stock No. 248-3718
  • Mfr. Part No. A9Z61240
Each
PHP75,964.27(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7703
  • Mfr. Part No. C12N3TM125L
Each
PHP54,298.00(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA
  • RS Stock No. 209-7043
  • Mfr. Part No. 3VA2025-5HN32-0AA0
Each
PHP46,537.67(exc. VAT)
In Stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7842
  • Mfr. Part No. C2542D250
Each
PHP63,206.12(exc. VAT)
Temporarily out of stock
Schneider Electric ComPact Interlock for use with ComPact NS Circuit Breaker, ComPact NSX Circuit Breaker
  • RS Stock No. 247-1720
  • Mfr. Part No. 29350
Each
PHP83,503.25(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 40A, Fixed Mount
  • RS Stock No. 254-6318
  • Mfr. Part No. C11H3TM040L
Each
PHP39,758.67(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 20A, Breaking Capacity 36 kA
  • RS Stock No. 209-6736
  • Mfr. Part No. 3VA1020-4ED32-0AA0
Each
PHP19,401.20(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 25A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9844
  • Mfr. Part No. 3VA1125-3ED42-0AA0
Each
PHP28,787.19(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 1.25kA, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4874
  • Mfr. Part No. 3VA2612-5HL42-0AA0
Each
PHP406,571.73(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 500A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-163
  • Mfr. Part No. 113536 NZMN3-4-A500-AVE
Each
PHP288,625.01(exc. VAT)
In Stock
Schurter Non Resettable Fuse, Radial 8A, 250V ac
  • RS Stock No. 269-3791
  • Mfr. Part No. 0034.6924
Each
PHP37.30(exc. VAT)
In Stock
NEMIQ Earthing Strap Copper
  • RS Stock No. 283-7538
  • Mfr. Part No. JF 10-150 M6
Each
PHP397.86(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 232-054
  • Mfr. Part No. 110878 NZMH3-4-AE400-AVE
Each
PHP310,251.73(exc. VAT)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 160A, Fixed Mount
  • RS Stock No. 221-1083
  • Mfr. Part No. LV438161
Each
PHP163,140.03(exc. VAT)
Temporarily out of stock
Schneider Electric EasyPact Electronic Circuit Breaker 200A 250V EZC, Fixed
  • RS Stock No. 588-952
  • Mfr. Part No. EZC250H4200
Each
PHP26,360.07(exc. VAT)
Temporarily out of stock
Eaton 2A Bolted Tag Fuse, 240V ac, 35mm
  • RS Stock No. 181-8576
  • Mfr. Part No. STD2
1 Box of 20
PHP4,203.94(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY5 MCB, 2P, 2A Curve B, 400V AC, 440V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-510
  • Mfr. Part No. 5SY5202-6
Each
PHP11,959.91(exc. VAT)
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