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

233 of 999+
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
Eaton Switch Disconnector for use with Circuit Breaker
  • RS Stock No. 228-776
  • Mfr. Part No. CCP2-1-100CF
1 Pack of 6
PHP111,701.30(exc. VAT)
Temporarily out of stock
Siemens Surge Suppressor Unit, 200 → 400V ac, Clip-On Mount
  • RS Stock No. 156-044
  • Mfr. Part No. 3RT2936-1BE00
Each
PHP1,493.43(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 320A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 231-470
  • Mfr. Part No. 109673 NZMH3-A320
Each
PHP177,485.69(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-568
  • Mfr. Part No. 3VA5180-6EC31-0AA0
Each
PHP35,328.37(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 155-867
  • Mfr. Part No. 3VA2440-7MQ32-0AA0
Each
PHP281,095.64(exc. VAT)
Limited stock
Limitor Thermal Fuse +131°C 2 A, 250V ac
  • RS Stock No. 176-9384
  • Mfr. Part No. SM125 A0
Each (In a Pack of 5)
PHP50.678(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Cassette for use with INX16…4-…W, IZMX16…4-…W
  • RS Stock No. 132-945
  • Mfr. Part No. 183956 IZMX-CAS164-1600-SEC-1
Each
PHP203,446.92(exc. VAT)
In Stock
Siemens 32A Centred Tag Fuse, NH0, 1000V ac
  • RS Stock No. 395-838
  • Mfr. Part No. 3NE4101
Each (In a Pack of 3)
PHP5,283.437(exc. VAT)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-180
  • Mfr. Part No. 3VA6610-7HM42-0AA0
Each
PHP769,764.45(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4363 MCB, 3P, 63A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-709
  • Mfr. Part No. 5SJ4363-8HG41
Each
PHP41,933.83(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 4P, 40A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 204-295
  • Mfr. Part No. 2CDS384001R0557
Each
PHP44,820.31(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 500mA Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-813
  • Mfr. Part No. 2CDS274001R0981
Each
PHP41,190.87(exc. VAT)
Temporarily out of stock
Eaton MCB, 3P, 8A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 241-180
  • Mfr. Part No. 101339 PLI-C8/3N
Each
PHP13,782.45(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3P, 1A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-885
  • Mfr. Part No. 2CDS273001R0011
Each
PHP28,709.43(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5180
  • Mfr. Part No. 3VA2163-6KP36-0AA0
Each
PHP113,249.72(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 A9P54 MCB, 1+N, 10kA, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 207-170
  • Mfr. Part No. A9P54640
Each
PHP5,425.12(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 1P, 16A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-882
  • Mfr. Part No. 2CCS861001R0467
Each
PHP6,104.99(exc. VAT)
Temporarily out of stock
Schneider Electric Surge Arrester, DIN Rail Mount
  • RS Stock No. 247-1638
  • Mfr. Part No. 16331
Each
PHP239,092.02(exc. VAT)
In Stock
Littelfuse Non-Resettable Wire Ended Fuse 375mA, 125V ac/dc
  • RS Stock No. 738-3065P
  • Mfr. Part No. 0251.375MRT1L
Each (Supplied on a Reel)
PHP51.744(exc. VAT)
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