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

33502 Products showing for Fuses & Circuit Breakers

191 of 999+
Temporarily out of stock
Eaton Eaton xEffect SASY 60i Busbar, 690V
  • RS Stock No. 231-717
  • Mfr. Part No. 107210 BBS-3/FL-185
Each
PHP4,083.42(exc. VAT)
Temporarily out of stock
Littelfuse SMD Non Resettable Fuse 5A, 32V
  • RS Stock No. 820-7120
  • Mfr. Part No. 0438005.WR
Each (In a Pack of 100)
PHP55.698(exc. VAT)
In Stock
Schneider Electric Vigi IC60 RCCB, 40A, 3 Pole, 30mA, Type A-SI, 400V ac
  • RS Stock No. 276-1540
  • Mfr. Part No. A9Q31340
Each
PHP31,759.54(exc. VAT)
Temporarily out of stock
Littelfuse SMD Non Resettable Fuse 4A, 125V ac
  • RS Stock No. 769-3735
  • Mfr. Part No. 0452004.NRL
Each (In a Pack of 10)
PHP104.148(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IULN11 2 Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0313
  • Mfr. Part No. IULN11-1REC4-72-20.0-A
1 Box of 5
PHP63,096.84(exc. VAT)
In Stock
Better World
Schneider Electric Busbar End Feed Unit
  • RS Stock No. 219-8912
  • Mfr. Part No. KSA250AB4
Each
PHP58,108.10(exc. VAT)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit, 434mm, 32A, Canalis Series
  • RS Stock No. 354-396
  • Mfr. Part No. KNB32CP35
Each
PHP15,102.05(exc. VAT)
Temporarily out of stock
Siemens RCCB, 25A, 4 Pole, 30mA, Type F, 400V
  • RS Stock No. 269-9758
  • Mfr. Part No. 5SV3342-3KK60
Each
PHP52,747.83(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 450A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 249-005
  • Mfr. Part No. 191553 NZMH3-MX450-AVE
Each
PHP248,010.77(exc. VAT)
Temporarily out of stock
ABB Surge Protector, DIN Rail Mount
  • RS Stock No. 136-3880
  • Mfr. Part No. 1SNA167224R2700
Each
PHP509.95(exc. VAT)
In Stock
Siemens Connection Plug for use with S0 Size Circuit Breakers with Spring Terminal
  • RS Stock No. 124-3109
  • Mfr. Part No. 3RV2927-5AA00
Each
PHP542.59(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 30A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-584
  • Mfr. Part No. 102233 FAZ-D30/2-RT
Each
PHP12,536.16(exc. VAT)
Temporarily out of stock
ABB S804C MCB, 4P, 32A Curve B, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-383
  • Mfr. Part No. 2CCS884001R0325
Each
PHP15,046.08(exc. VAT)
Temporarily out of stock
Eaton PKPM2 RCCB, 20A, 2 Pole, 30mA, Type B, 230V
  • RS Stock No. 232-023
  • Mfr. Part No. 108108 PKPM2-20/2/B/003-A
Each
PHP15,615.22(exc. VAT)
Temporarily out of stock
Eaton MCB, 4P, 2A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 248-676
  • Mfr. Part No. 101357 PLI-C2/4
Each
PHP14,295.63(exc. VAT)
In Stock
Eaton 250A Centred Tag Fuse, NH2, 690V ac
  • RS Stock No. 182-1719
  • Mfr. Part No. 250NHG2B-690
Each
PHP1,698.37(exc. VAT)
Temporarily out of stock
Eaton IZMX40B4-P16F-1 Electronic Circuit Breaker 1.6kA , Fixed
  • RS Stock No. 132-923
  • Mfr. Part No. 183813 IZMX40B4-P16F-1
Each
PHP1,237,876.29(exc. VAT)
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar, 230V
  • RS Stock No. 187-5239
  • Mfr. Part No. 5ST3787-0
Each
PHP2,431.41(exc. VAT)
Temporarily out of stock
Pepperl + Fuchs Busbar
  • RS Stock No. 134-8136
  • Mfr. Part No. POWERBUS-SETH5.250
Each
PHP4,281.64(exc. VAT)
Temporarily out of stock
Siemens SENTRON Cable for use with 3WL10 Mutual Mechanical Interlocking
  • RS Stock No. 266-650
  • Mfr. Part No. 3VW9011-0BB23
Each
PHP11,803.05(exc. VAT)
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