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

33476 Products showing for Fuses & Circuit Breakers

90 of 999+
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 2P 100A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-463
  • Mfr. Part No. BGF26100
Each
PHP57,378.24(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 3P, 10A Curve D, 440V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 664-357
  • Mfr. Part No. 5SY7310-8
Each
PHP12,987.14(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-291
  • Mfr. Part No. 3VA6440-5KQ31-0AA0
Each
PHP335,030.81(exc. VAT)
In Stock
Eaton xEffect FAZ6 MCB, 1P, 6A Curve B, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 247-539
  • Mfr. Part No. 150690 FAZ6-B6/1-SA
Each
PHP2,350.75(exc. VAT)
Temporarily out of stock
HENSEL ENYSTAR Distribution Board, 63 A
  • RS Stock No. 117-477
  • Mfr. Part No. FP 1107
Each
PHP12,041.32(exc. VAT)
Last RS stock
Wickmann 0.1A Resettable Fuse, 60V dc
  • RS Stock No. 174-0817
  • Mfr. Part No. RF2579-000
Each (In a Pack of 20)
PHP17.109(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 1P 110A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 345-251
  • Mfr. Part No. BDF16110
Each
PHP45,701.28(exc. VAT)
In Stock
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.3kV, DIN Rail Mount
  • RS Stock No. 101-749
Each
PHP3,252.54(exc. VAT)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 221-1034
  • Mfr. Part No. LV432810
Each
PHP451,303.47(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 125A, Breaking Capacity 25kA
  • RS Stock No. 260-9757
  • Mfr. Part No. LV516312
Each
PHP58,429.32(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 2A, Type A, 230V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-502
  • Mfr. Part No. 5SY4502-5
Each
PHP6,442.21(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 45A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-409
  • Mfr. Part No. 3VA5145-4ED21-1AA0
Each
PHP32,537.83(exc. VAT)
In Stock
RS PRO 25A Natural Blade Car Fuse, 32V dc
  • RS Stock No. 563-475
Each (In a Pack of 10)
PHP28.835(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 200A, Breaking Capacity 14 kA, DIN Rail Mount
  • RS Stock No. 432-912
  • Mfr. Part No. NJDF36200TW
Each
PHP223,887.82(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 200A, Fixed Mount
  • RS Stock No. 260-7865
  • Mfr. Part No. C25B3TM200
Each
PHP110,075.81(exc. VAT)
In Stock
Lovato RCBO, 20A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, P1 Range
  • RS Stock No. 277-5058
  • Mfr. Part No. P1RE1NC20AC300
Each
PHP8,111.77(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4220 MCB, 2P, 20A Curve D, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 299-868
  • Mfr. Part No. 5SJ4220-8HG41
Each
PHP11,363.19(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Reds RCCB, 63A, 30mA, 230V
  • RS Stock No. 357-881
  • Mfr. Part No. A9CR4263
Each
PHP66,116.90(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-621
  • Mfr. Part No. 3VA6115-7HN31-0AA0
Each
PHP126,827.86(exc. VAT)
Temporarily out of stock
Eaton Switch Disconnector for use with Circuit Breaker
  • RS Stock No. 228-858
  • Mfr. Part No. CCP2-1-DCC
1 Pack of 6
PHP23,414.53(exc. VAT)
1
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