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

302 of 999+
Temporarily out of stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1, NZM1
  • RS Stock No. 240-430
  • Mfr. Part No. 100683 NZM1-XTVDV-NA
Each
PHP7,844.27(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1, NZM1
  • RS Stock No. 248-656
  • Mfr. Part No. 100671 NZM1-XTVDVR-60-NA
Each
PHP8,430.75(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KBB Series
  • RS Stock No. 219-8864
  • Mfr. Part No. KBB40ABG44W
Each
PHP13,236.77(exc. VAT)
In Stock
Littelfuse 0.9A Resettable Fuse, 72V
  • RS Stock No. 517-6679P
  • Mfr. Part No. RXEF090
Each (Supplied in a Bag)
PHP20.79(exc. VAT)
Temporarily out of stock
Siemens SENTRON Nut Keeper Kit for use with 3VA1
  • RS Stock No. 269-7120
  • Mfr. Part No. 3VA9213-0QG00
Each (In a Pack of 3)
PHP926.58(exc. VAT)
Temporarily out of stock
Siemens 224A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6892
  • Mfr. Part No. 3NA3242-6
Each (In a Pack of 3)
PHP4,572.147(exc. VAT)
Temporarily out of stock
Eaton Eaton xEffect SASY 60i Busbar
  • RS Stock No. 235-216
  • Mfr. Part No. 107203 BBT-CU-BAR500/720-50
Each (In a Pack of 6)
PHP2,056.518(exc. VAT)
Temporarily out of stock
Eaton Extension Connector for use with N(S)4, NZM4
  • RS Stock No. 230-499
  • Mfr. Part No. 119861 NZM4-XKV95-2KB
Each
PHP35,262.54(exc. VAT)
In Stock
Eaton 100A Centred Tag Fuse, NH01, 500V ac
  • RS Stock No. 703-8699
  • Mfr. Part No. 100NHG01B
Each
PHP660.16(exc. VAT)
Temporarily out of stock
Better World
Kimberly Clark
  • RS Stock No. 210-3517
  • Mfr. Part No. 3VA9163-0JA12
Each
PHP2,139.44(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-7586
  • Mfr. Part No. C11F3TM025B
Each
PHP30,915.02(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 25A, 4 Pole, 300mA, Type A, 230V ac
  • RS Stock No. 225-6131
  • Mfr. Part No. 2CSF204101R3250 F204 A-25/0,3
Each
PHP13,454.30(exc. VAT)
Temporarily out of stock
Eaton RCCB, 25A, 4 Pole, 300mA, Type A, 230 V ac, 400 V ac
  • RS Stock No. 227-0705
  • Mfr. Part No. 267455 PFGM-25/4/03-A
Each
PHP8,380.93(exc. VAT)
Temporarily out of stock
Eaton NZM Jumper Link for use with N3-4-…-S1(-S15)-DC
  • RS Stock No. 121-184
  • Mfr. Part No. 170121 NZM3-4-XKVI2POU-K
Each
PHP30,143.16(exc. VAT)
Temporarily out of stock
Eaton 355A Tag Fuse, 76 x 254mm, 3.6kV
  • RS Stock No. 228-726
  • Mfr. Part No. 3.6WKFHO355
1 Pack of 3
PHP293,903.59(exc. VAT)
Temporarily out of stock
ABB Tmax XT Adapter for use with Circuit Breaker
  • RS Stock No. 232-0172
  • Mfr. Part No. 1SDA066312R1 ADP PF XT4 4P
Each
PHP2,374.51(exc. VAT)
Temporarily out of stock
Better World
Siemens 5SV3 RCCB, 25A, 4 Pole, 300mA, Type A, 400V ac
  • RS Stock No. 211-9694
  • Mfr. Part No. 5SV3642-8
Each
PHP10,483.69(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 2A Curve D, 415V AC, 100 kA Breaking Capacity
  • RS Stock No. 201-362
  • Mfr. Part No. 2CDS383103R0021
Each
PHP48,274.51(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 125A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-961
  • Mfr. Part No. 3VA5212-6EC61-0AA0
Each
PHP100,026.99(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4332 MCB, 3P, 32A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-062
  • Mfr. Part No. 5SJ4332-8HG42
Each
PHP22,359.82(exc. VAT)
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