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

120 of 999+
In Stock
Siemens Sentron Undervoltage Release for use with 3VA1 Series Circuit Breaker
  • RS Stock No. 874-4525
  • Mfr. Part No. 3VA9908-0BB25
Each
PHP10,973.62(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 12.5A, Fixed Mount
  • RS Stock No. 260-9494
  • Mfr. Part No. C10N3MA013
Each
PHP43,353.86(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 200mA Current Rating
  • RS Stock No. 135-511
  • Mfr. Part No. 0914918
1 Pack of 3
PHP29,818.36(exc. VAT)
Temporarily out of stock
Siemens SENTRON Nut Keeper Kit for use with 3VA1
  • RS Stock No. 269-7188
  • Mfr. Part No. 3VA9403-0QG00
Each (In a Pack of 3)
PHP1,414.18(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 4P, 50A, Type A, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-325
  • Mfr. Part No. 5SY4650-5
Each
PHP29,055.99(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 428-728
  • Mfr. Part No. C100L420FM
Each
PHP1,090,650.66(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 55 kA
  • RS Stock No. 209-7075
  • Mfr. Part No. 3VA2340-5HL42-0AA0
Each
PHP139,308.20(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 34 kA, Fixed Mount
  • RS Stock No. 127-169
  • Mfr. Part No. 179328 N4-4-800-S15-PV-NA
Each
PHP472,217.91(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-675
  • Mfr. Part No. 3VA6140-6HN31-0AA0
Each
PHP67,812.58(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-983
  • Mfr. Part No. 3VA5215-7GC41-2AA0
Each
PHP160,924.51(exc. VAT)
In Stock
ABB System Pro M Compact S200M MCB, 2P, 4A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-149
  • Mfr. Part No. 2CDS272001R0337
Each
PHP7,396.68(exc. VAT)
In Stock
Bourns 0.9A Resettable Fuse, 60V
  • RS Stock No. 647-8538
  • Mfr. Part No. MF-R090
Each (In a Pack of 10)
PHP21.364(exc. VAT)
Temporarily out of stock
SIBA 25A NH Fuse, NH000, 690V ac
  • RS Stock No. 431-6961
  • Mfr. Part No. 20-477-34/25A
Each
PHP4,697.81(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 15A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-734
  • Mfr. Part No. 3VA5295-7ED31-2AA0
Each
PHP81,375.10(exc. VAT)
Temporarily out of stock
Schneider Electric A9C Acti9 Reflex MCB, 3P, 63A Curve C, 230V AC, 24V DC, 240 V ac Breaking Capacity
  • RS Stock No. 334-995
  • Mfr. Part No. A9C62363
Each
PHP40,147.98(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 110A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-182
  • Mfr. Part No. 3VA5111-4EC31-0AA0
Each
PHP45,110.27(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 450A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 249-010
  • Mfr. Part No. 191582 NZMN3-MX450-AVE
Each
PHP226,603.99(exc. VAT)
In Stock
Mersen 50A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 238-4013
  • Mfr. Part No. E220965
Each
PHP2,940.55(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 40A, 4 Pole, 500mA, Type A, 230V ac
  • RS Stock No. 225-6139
  • Mfr. Part No. 2CSF204123R4400 F204 A-40/0.5
Each
PHP17,208.38(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 3P, 4A Curve C, 440V AC, 180V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3492
  • Mfr. Part No. A9F74304
Each
PHP16,377.61(exc. VAT)
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