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

47265 Products showing for Fuses & Circuit Breakers

172 of 999+
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  • RS Stock No. 655-016
  • Mfr. Part No. KSA630DLC401
Each
HK$20,127.40
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HK$5,206.20
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  • RS Stock No. 200-511
  • Mfr. Part No. 1STQ007410A0000
Each
HK$7,104.80
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  • RS Stock No. 147-407
  • Mfr. Part No. 3VA5210-7ED31-2AA0
Each
HK$8,041.40
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  • RS Stock No. 231-652
  • Mfr. Part No. 110395 DIII-SO/63/3-R-PS
1 Pack of 10
HK$1,777.80
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  • RS Stock No. 627-141
  • Mfr. Part No. 5ST3664-1HG
1 Pack of 10
HK$1,525.30
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  • RS Stock No. 484-8272
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Each (In a Pack of 20)
HK$6.865
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  • RS Stock No. 148-210
  • Mfr. Part No. 3VA5120-4ED21-1AA0
Each
HK$2,146.40
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  • Mfr. Part No. 0031.1661
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HK$11.096
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  • RS Stock No. 852-6973
  • Mfr. Part No. HTB-62I-R
Each
HK$102.90
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  • RS Stock No. 787-4347P
  • Mfr. Part No. 01530007Z
Each (Supplied in a Bag)
HK$25.40
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  • RS Stock No. 852-7538
  • Mfr. Part No. JT60060
Each (In a Pack of 12)
HK$533.40
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  • RS Stock No. 852-6976
  • Mfr. Part No. HTB-56I-R
Each
HK$92.50
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  • RS Stock No. 182-1677
  • Mfr. Part No. CHCC2DIU
Each
HK$783.40
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  • RS Stock No. 144-4783
  • Mfr. Part No. NGN463
Each
HK$4,862.73
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  • RS Stock No. 260-755
  • Mfr. Part No. 7.2OBWNA3.15
Each
HK$2,060.20
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  • RS Stock No. 220-5800
  • Mfr. Part No. 1135740
Each
HK$358.60
Temporarily out of stock
  • RS Stock No. 243-292
  • Mfr. Part No. 144597 XBSN-B
1 Pack of 10
HK$839.10
Temporarily out of stock
  • RS Stock No. 244-175
  • Mfr. Part No. 141843 XNAE10-18
1 Pack of 20
HK$1,232.70
Temporarily out of stock
  • RS Stock No. 259-4103
  • Mfr. Part No. 1SDA072200R1
Each
HK$91,829.17
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