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

227 of 999+
Last RS stock
RS PRO 40A Bolted Tag Fuse, A3, 250 V dc, 690V ac, 73mm
  • RS Stock No. 221-3714
Each (In a Pack of 10)
PHP763.95(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3+N, 25A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-072
  • Mfr. Part No. 2CDS273103R0518
Each
PHP37,130.09(exc. VAT)
Temporarily out of stock
Eaton RCBO, 20A Current Rating, 3P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS Stock No. 123-293
  • Mfr. Part No. 170746 FRBMM-C20/3/01-A
Each
PHP14,159.05(exc. VAT)
Temporarily out of stock
ABB S304 MCB, 4P, 40A Curve C, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 203-755
  • Mfr. Part No. 2CDS384001R0404
Each
PHP34,120.72(exc. VAT)
New product - Preorder today
Fuse - Strip 60 w/ Housing 48VDC, 400A
  • RS Stock No. 522-972
  • Mfr. Part No. 157.5701.6401
1 Bag of 25
PHP29,055.29(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 50kA, DIN Rail Mount
  • RS Stock No. 201-6809
  • Mfr. Part No. 2905422
Each
PHP16,564.88(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 4A, 125V ac/dc
  • RS Stock No. 541-3423
  • Mfr. Part No. 0451004.MRL
Each (In a Pack of 10)
PHP59.973(exc. VAT)
In Stock
Bourns 40A Tag Fuse, 66mm, 500V ac, 24.1mm
  • RS Stock No. 254-4195
  • Mfr. Part No. PF-JT3-40
Each
PHP1,169.65(exc. VAT)
Currently unavailable
ABB RCCB, 32A, 4 Pole, 300mA, Type C, 415V ac
  • RS Stock No. 246-2415
  • Mfr. Part No. 2CCG001758R0001
Each
PHP36,770.28(exc. VAT)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-069
  • Mfr. Part No. KV 9103
Each
PHP2,798.01(exc. VAT)
In Stock
HENSEL 1, 3 Phase Distribution Board, 24 Way, 63 A
  • RS Stock No. 183-2860
  • Mfr. Part No. KV9224M
Each
PHP6,873.68(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 125A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-259
  • Mfr. Part No. 3VA5212-5EC31-0AA0
Each
PHP83,468.08(exc. VAT)
In Stock
ABB SU200 M MCB, 1P, 1A Curve C, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-144
  • Mfr. Part No. 2CDS271337R0014
Each
PHP7,101.32(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 16A, Fixed Mount
  • RS Stock No. 254-6293
  • Mfr. Part No. C10H3TM016
Each
PHP53,406.05(exc. VAT)
Temporarily out of stock
Siemens 670A Tag Fuse, 151mm, 690V
  • RS Stock No. 608-775
  • Mfr. Part No. 3NE1447-3
1 Pack of 3
PHP56,351.00(exc. VAT)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - R11 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0453
  • Mfr. Part No. R11-2-20.0A-B06CV-V
1 Box of 10
PHP12,992.67(exc. VAT)
In Stock
Siemens 1 Phase Surge Protector, 25kA, DIN Rail Mount
  • RS Stock No. 211-0191
  • Mfr. Part No. 5SD7463-0
Each
PHP21,596.56(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 269-995
  • Mfr. Part No. 3VA6110-8JP41-0AA0
Each
PHP183,277.25(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Trip Unit for use with ComPacT NSX100
  • RS Stock No. 654-979
  • Mfr. Part No. C1047A040
Each
PHP164,059.76(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 225A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-344
  • Mfr. Part No. 3VA5222-7ED41-2AA0
Each
PHP183,275.25(exc. VAT)
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