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

296 of 999+
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 500A, Fixed Mount
  • RS Stock No. 250-4190
  • Mfr. Part No. 1SDA054473R1
Each
PHP376,017.22(exc. VAT)
Temporarily out of stock
ABB 250A Tag Fuse, 150 x 40 x 72mm, 690V
  • RS Stock No. 250-4474
  • Mfr. Part No. 1SCA022701R0700
1 Box of 3
PHP6,298.80(exc. VAT)
Temporarily out of stock
Eaton IZMX16B3-P08W-1 Electronic Circuit Breaker 800A , DIN Rail
  • RS Stock No. 127-542
  • Mfr. Part No. 183470 IZMX16B3-P08W-1
Each
PHP513,414.75(exc. VAT)
Temporarily out of stock
Mersen 40A Bolted Tag Fuse, A3, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1111
  • Mfr. Part No. P1006585 / BTIS69V40
Each (In a Pack of 10)
PHP1,006.849(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 100mA, 250V ac
  • RS Stock No. 173-9770
  • Mfr. Part No. 0034.6605
Each (In a Bag of 100)
PHP23.265(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IULN1 Single Pole Panel Mount, 40A Current Rating
  • RS Stock No. 275-0320
  • Mfr. Part No. IULN1-1-52-40.0
1 Box of 5
PHP28,676.21(exc. VAT)
In Stock
Littelfuse 0.125A Resettable Fuse, 30V dc
  • RS Stock No. 787-4186P
  • Mfr. Part No. 1206L012WR
Each (Supplied on a Reel)
PHP17.82(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S201M MCB, 1+N, 500mA Curve C, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-845
  • Mfr. Part No. 2CDS271103R0984
Each
PHP11,723.21(exc. VAT)
Temporarily out of stock
Schneider Electric Resi9 Electronic Circuit Breaker 63A Resi9, Clip-On Type C
  • RS Stock No. 345-168
  • Mfr. Part No. R9PS463
Each
PHP11,160.12(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 40A, Type A, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-312
  • Mfr. Part No. 5SY4240-5
Each
PHP12,620.28(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IUGN1 Single Pole Panel Mount, 5A Current Rating
  • RS Stock No. 275-0276
  • Mfr. Part No. IUGN1-1-62-5.00-U
Each
PHP4,784.97(exc. VAT)
Temporarily out of stock
Phoenix Contact 2 Phase Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 201-6714
  • Mfr. Part No. 2905338
Each
PHP26,117.41(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 750mA Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-060
  • Mfr. Part No. 2CDS272061R0187
Each
PHP23,528.98(exc. VAT)
In Stock
Siemens Fuse Holder Diazed Adapter Screw
  • RS Stock No. 202-7222
  • Mfr. Part No. 5SH313
Each (In a Pack of 25)
PHP66.846(exc. VAT)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 2A, 125V ac
  • RS Stock No. 226-0816
  • Mfr. Part No. 3951200000
Each (In a Pack of 10)
PHP82.832(exc. VAT)
Temporarily out of stock
ABB S804S MCB, 4P, 63A, UC-B, 750V DC, 50 kA Breaking Capacity
  • RS Stock No. 140-816
  • Mfr. Part No. 2CCS864001R1635
Each
PHP41,522.50(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 20A Curve D, 400V AC, 72V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-664
  • Mfr. Part No. 5SY8420-8BB08
Each
PHP12,987.14(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3769
  • Mfr. Part No. 3VA2063-5HM32-0AA0
Each
PHP58,643.70(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 20A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-003
  • Mfr. Part No. 2CDS274061R0487
Each
PHP53,156.72(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4H MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-6793
  • Mfr. Part No. 1SDA068532R1 XT4H 160 Ekip LS/I 63A FF
Each
PHP96,202.87(exc. VAT)
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