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

308 of 999+
Temporarily out of stock
Hager MMN MCB, 4P, 10A, 400V AC, 25 kA Breaking Capacity
  • RS Stock No. 602-136
  • Mfr. Part No. MMN410
Each
PHP39,649.29(exc. VAT)
In Stock
Murrelektronik Limited Earthing Strap Tinned Copper
  • RS Stock No. 285-5830
  • Mfr. Part No. 4000-71001-1630006
Each
PHP978.45(exc. VAT)
Temporarily out of stock
Siemens 230V ac Remote Switch Circuit Trip
  • RS Stock No. 223-7629
  • Mfr. Part No. 5TT4424-0
Each
PHP8,132.85(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 1P 90A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 347-161
  • Mfr. Part No. BDF16090
Each
PHP36,566.01(exc. VAT)
Temporarily out of stock
Eaton Earthing Strap
  • RS Stock No. 244-794
  • Mfr. Part No. 141845 XNAE4-42
1 Pack of 20
PHP7,666.29(exc. VAT)
Temporarily out of stock
ABB S304 MCB, 4P, 3A Curve C, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-361
  • Mfr. Part No. 2CDS384001R0034
Each
PHP39,007.15(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 4P 250A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-149
  • Mfr. Part No. C25F47E250
Each
PHP602,879.48(exc. VAT)
Temporarily out of stock
Eaton xEffect MCB, 4P, 20A Curve B, 400V AC, 25 kA Breaking Capacity
  • RS Stock No. 246-365
  • Mfr. Part No. 174532 AZ-4-B20
Each
PHP40,247.68(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-155
  • Mfr. Part No. 3VA6580-6KL42-2AA0
Each
PHP673,727.17(exc. VAT)
In Stock
Eaton AKU70 Enclosure for use with All 10 mm Thick Flat Busbars, Compact System, Feeder Circuits
  • RS Stock No. 235-211
  • Mfr. Part No. 107189 AKU70/5
Each
PHP393.68(exc. VAT)
Temporarily out of stock
ABB SMISSLINE Busbar for Smissline TP
  • RS Stock No. 246-2312
  • Mfr. Part No. 2CCF800225R0001
Each
PHP441.00(exc. VAT)
Temporarily out of stock
Hager NGN MCB, 3P, 25A, 400V AC, 10 Breaking Capacity
  • RS Stock No. 602-161
  • Mfr. Part No. NGN325
Each
PHP13,554.17(exc. VAT)
In Stock
Siemens SIRIUS 3 Phase Busbar, 55mm Pitch
  • RS Stock No. 755-2848
  • Mfr. Part No. 3RV1915-2AB
Each
PHP1,202.27(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-974
  • Mfr. Part No. 3VA6580-5JT32-2AA0
Each
PHP510,243.86(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 4P, 63A, Type A, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-627
  • Mfr. Part No. 5SY4663-5
Each
PHP34,118.77(exc. VAT)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Protector, 305V ac, DIN Rail Mount
  • RS Stock No. 265-7544
  • Mfr. Part No. 2910367
Each
PHP15,846.96(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4819
  • Mfr. Part No. 3VA2563-6KQ42-0AA0
Each
PHP276,600.98(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 63A, 4 Pole, 30mA, Type A, 230/400V ac
  • RS Stock No. 177-5059
  • Mfr. Part No. 2CSF204401R1630 F204 A-63/0,03 AP-R
Each
PHP21,667.59(exc. VAT)
Temporarily out of stock
Siemens SENTRON Busbar Connector for use with 3VA53/54, 3VA63/64
  • RS Stock No. 157-961
  • Mfr. Part No. 3VA9474-0QB00
Each
PHP10,698.12(exc. VAT)
Temporarily out of stock
HENSEL Mi Distribution Board, 1 Way
  • RS Stock No. 276-5359
  • Mfr. Part No. Mi 1111
Each
PHP20,257.43(exc. VAT)
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