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

224 of 999+
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels
  • RS Stock No. 156-675
  • Mfr. Part No. 3VA2325-0KQ32-0AA0
Each
PHP305,442.42(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 Cover for use with Linergy FH Horizontal Comb Busbar
  • RS Stock No. 776-2821
  • Mfr. Part No. A9XPE110
Each
PHP473.53(exc. VAT)
Temporarily out of stock
Schneider Electric Multi9 M9F1 MCB, 3P, 4A Curve C, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-125
  • Mfr. Part No. M9F11304
Each
PHP15,442.79(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 35A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-874
  • Mfr. Part No. 3VA5235-7ED31-2AA0
Each
PHP82,697.43(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 10A Curve D, 400V AC, 72V DC, 40 kA Breaking Capacity
  • RS Stock No. 610-494
  • Mfr. Part No. 5SY8410-8BB08
Each
PHP12,767.02(exc. VAT)
Temporarily out of stock
Schurter SMD Non Resettable Fuse 1.6A, 32 V ac, 63V dc
  • RS Stock No. 173-7778
  • Mfr. Part No. 3413.0218.22.
1 Reel of 1000
PHP24,827.12(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 A9V5 MCB, 3P, 25A, Type A, 400-415V AC
  • RS Stock No. 212-103
  • Mfr. Part No. A9V51325
Each
PHP13,648.29(exc. VAT)
In Stock
Better World
Schneider Electric Vigi iDT40 RCD, 25A, 1+N Pole, 30mA, 230V ac
  • RS Stock No. 191-6145
  • Mfr. Part No. A9Y62625
Each
PHP23,100.76(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-416
  • Mfr. Part No. 3VA5210-7GF41-2AA0
Each
PHP169,864.96(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, ≤1.5kV, DIN Rail Mount
  • RS Stock No. 890-3705
  • Mfr. Part No. 2905871
Each
PHP111,214.85(exc. VAT)
Temporarily out of stock
RS PRO 10A British Standard Fuse, A2, 550V ac, 73mm
  • RS Stock No. 521-2573
Each (In a Pack of 5)
PHP343.342(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-476
  • Mfr. Part No. 3VA6210-5JP31-2AA0
Each
PHP203,071.19(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 2kV, DIN Rail Mount
  • RS Stock No. 890-3720
  • Mfr. Part No. 2905469
Each
PHP48,651.60(exc. VAT)
In Stock
Eaton 50A British Standard Fuse, A4, 500V, 94mm
  • RS Stock No. 181-8692
  • Mfr. Part No. CEO50
Each
PHP605.87(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 243-029
  • Mfr. Part No. 191591 NZMN3-VX400-T-AVE
Each
PHP229,902.98(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 3A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-240
  • Mfr. Part No. 2CDS274061R0034
Each
PHP48,644.36(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 3VA9 Wire Connector for use with 3VA2 100/160/250
  • RS Stock No. 218-1840
  • Mfr. Part No. 3VA9263-0JB12
Each
PHP3,338.40(exc. VAT)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Unequipped Panel
  • RS Stock No. 629-244
  • Mfr. Part No. 8GK4501-4KK21
Each
PHP5,657.11(exc. VAT)
In Stock
ABB RCBO, 25A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6964
  • Mfr. Part No. 2CSR255080R2254 DS201 C25 AC100
Each
PHP9,940.86(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 400A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 354-380
  • Mfr. Part No. NLLL36000S40X
Each
PHP108,206.89(exc. VAT)
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