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

306 of 999+
In Stock
Mersen 20A Offset Tag Fuse, 9.4 x 47mm
  • RS Stock No. 209-6422
  • Mfr. Part No. J1065690 / BLST24V20
Each (In a Pack of 10)
PHP300.988(exc. VAT)
In Stock
Bourns Thermal Fuse +82°C 40 A, 28V
  • RS Stock No. 258-6375
  • Mfr. Part No. LC82AY-1
Each (In a Pack of 10)
PHP52.896(exc. VAT)
Temporarily out of stock
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0823
  • Mfr. Part No. 3WA9111-0AV24
Each
PHP5,064.18(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2V MCCB 4P 50A, Fixed Mount
  • RS Stock No. 236-7446
  • Mfr. Part No. 1SDA067708R1 XT2V 160 TMA 50A FF
Each
PHP79,786.36(exc. VAT)
In Stock
PTC Resettable Fuse 16V 750mA 1206
  • RS Stock No. 560-356
  • Mfr. Part No. 0ZCJ0075AF2E
Each
PHP13.68(exc. VAT)
Temporarily out of stock
Legrand DX3 RCD, 20A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 731-9941
  • Mfr. Part No. 4 111 59
Each
PHP31,649.16(exc. VAT)
Temporarily out of stock
Schneider Electric Busbar Feed Unit, 742mm, 250A, Canalis Series
  • RS Stock No. 119-456
  • Mfr. Part No. KSA250ABGD4
Each
PHP145,872.13(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Busbar End Feed Unit, Canalis KN Series
  • RS Stock No. 211-0437
  • Mfr. Part No. KNT63AB4
Each
PHP14,247.08(exc. VAT)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Protector, DIN Rail Mount
  • RS Stock No. 201-6810
  • Mfr. Part No. 2905472
Each
PHP16,564.88(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-645
  • Mfr. Part No. 3VA6210-6KM41-2AA0
Each
PHP322,567.96(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 500mA, Type Z, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-373
  • Mfr. Part No. 2CDS273061R0158
Each
PHP45,451.33(exc. VAT)
In Stock
SIBA SMD Non Resettable Fuse 2A, 250V
  • RS Stock No. 736-2642
  • Mfr. Part No. 160000.2
Each (In a Bag of 10)
PHP56.468(exc. VAT)
In Stock
Schneider Electric Acti9 A9F0 MCB, 3P, 13A Curve C, 440V AC, 180V DC, 10 kA Breaking Capacity
  • RS Stock No. 212-170
  • Mfr. Part No. A9F07313
Each
PHP12,807.82(exc. VAT)
Temporarily out of stock
Hager CDF RCD Switch, 25A, 2 Pole, 30mA, Type F, 230V
  • RS Stock No. 599-834
  • Mfr. Part No. CDF125F
Each
PHP18,636.76(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-610
  • Mfr. Part No. 3VA6560-7HL32-2AA0
Each
PHP334,297.70(exc. VAT)
In Stock
Littelfuse 0.3A Resettable Fuse, 60V
  • RS Stock No. 517-7026
  • Mfr. Part No. SMD030F-2
Each (In a Pack of 10)
PHP31.032(exc. VAT)
In Stock
Better World
Schneider Electric Compact Ins, Compact Insj, Compact Inv, Compact Nsx, Easypact Cvs Spreader for use with Compact Nsx
  • RS Stock No. 221-1236
  • Mfr. Part No. LV432493
Each
PHP13,258.44(exc. VAT)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0247
  • Mfr. Part No. 8GK1031-2KK10
Each
PHP21,280.40(exc. VAT)
In Stock
Eaton 80A Bolted Tag Fuse, 415V ac, 82mm
  • RS Stock No. 181-8781
  • Mfr. Part No. 80MJ30-7
Each
PHP3,247.42(exc. VAT)
In Stock
Eaton 10A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 181-8819
  • Mfr. Part No. 10NZ01
Each
PHP185.20(exc. VAT)
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