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

138 of 999+
Temporarily out of stock
ABB S803N MCB, 3P, 10A Curve D, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-424
  • Mfr. Part No. 2CCS893001R0101
Each
PHP17,510.75(exc. VAT)
In Stock
Eaton Eaton Moeller FAZ-DC MCB Mini Circuit Breaker, 2P, 13A Curve B, 500V DC, 10 kA Breaking Capacity
  • RS Stock No. 125-833
  • Mfr. Part No. 176080 FAZ-B13/2-DC
Each
PHP11,255.53(exc. VAT)
Temporarily out of stock
Hager 72 Way Plastic Consumer Unit, IP30 FD
  • RS Stock No. 144-4611
  • Mfr. Part No. FD32AN
Each
PHP29,193.46(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELH111 3 Pole 480V ac Voltage Rating Panel Mount, 20A Current Rating
  • RS Stock No. 275-0231
  • Mfr. Part No. IELH111-1-61-20.0-AE-21-V
Each
PHP14,668.95(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iIG40 RCCB, 40A, 1+N Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 191-6126
  • Mfr. Part No. A9R67640
Each
PHP13,749.07(exc. VAT)
Temporarily out of stock
Miniature circuit breaker, 16 A, 1p
  • RS Stock No. 611-268
  • Mfr. Part No. PLSM-D16-Q-MW
Each
PHP2,263.58(exc. VAT)
Temporarily out of stock
Miniature circuit breaker, 16 A, 3p
  • RS Stock No. 611-269
  • Mfr. Part No. PLSM-D16/3-MW
Each
PHP6,836.96(exc. VAT)
Temporarily out of stock
Miniature circuit breaker, 16 A, 1p
  • RS Stock No. 611-255
  • Mfr. Part No. PLSM-B16-Q-MW
Each
PHP1,432.99(exc. VAT)
In Stock
Eaton 6A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8611
  • Mfr. Part No. 6NHG000B
Each
PHP330.58(exc. VAT)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6154
  • Mfr. Part No. 1SDA066901R1 ES XT4 3PCS
Each
PHP3,593.27(exc. VAT)
In Stock
Eaton 200A British Standard Fuse, A4, 415V ac, 93.7mm
  • RS Stock No. 139-978
  • Mfr. Part No. DEO200
Each
PHP2,769.97(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 5A, 125V ac/dc
  • RS Stock No. 541-3445
  • Mfr. Part No. 0451005.MRL
Each (In a Pack of 10)
PHP66.80(exc. VAT)
In Stock
ABB Surge Protector, 1.5kV, DIN Rail Mount
  • RS Stock No. 289-1631
  • Mfr. Part No. 2CTB803872R1100
Each
PHP10,085.87(exc. VAT)
Currently unavailable
Schurter PC Board Non Resettable Fuse, Axial 63mA, 125V ac/dc
  • RS Stock No. 173-9701
  • Mfr. Part No. 7010.6300.13
Each (In a Bag of 100)
PHP83.549(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 300mA
  • RS Stock No. 776-3714
  • Mfr. Part No. A9R34463
Each
PHP39,185.68(exc. VAT)
In Stock
Phoenix Contact Surge Protector, 20kA, DIN Rail Mount
  • RS Stock No. 207-2730
  • Mfr. Part No. 2906786
Each
PHP9,801.18(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 50A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9370
  • Mfr. Part No. 3VA1150-6GD42-0AA0
Each
PHP34,258.56(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 20A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9834
  • Mfr. Part No. 3VA1120-6ED36-0AA0
Each
PHP21,063.64(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 655-151
  • Mfr. Part No. C11B6TM100L
Each
PHP41,126.29(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 2P 80A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-471
  • Mfr. Part No. BGL26080LU
Each
PHP53,021.38(exc. VAT)
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