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

46578 Products showing for Fuses & Circuit Breakers

173 / 999+
Temporarily out of stock
Schneider Electric Acti9 Acti9 iC60 MCB, 3P, 63A, Type AC, 500V AC, 1000 mA Breaking Capacity
  • RS Stock No. 429-219
  • Mfr. Part No. A9V19363
Each
MYR4,160.05
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar, 18mm Pitch
  • RS Stock No. 202-7162
  • Mfr. Part No. 5ST3602
Each (In a Pack of 10)
MYR18.711
In Stock
Better World
Schneider Electric Compact Nsx, Easypact Cvs Cable Connector for use with 1 Cable 25 mm2 → 95 mm2
  • RS Stock No. 221-1150
  • Mfr. Part No. LV429228
Each
MYR423.57
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-664
  • Mfr. Part No. 3VA6110-7JP41-0AA0
Each
MYR12,438.82
In Stock
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 189-5337
  • Mfr. Part No. S1062708 / CMC101I
Each
MYR57.79
Temporarily out of stock
Eaton 100A Tag Fuse, 33 x 60mm, 500V
  • RS Stock No. 229-132
  • Mfr. Part No. 100D125
1 Pack of 3
MYR261.02
Temporarily out of stock
Hager CDS RCD Switch, 40A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 599-842
  • Mfr. Part No. CDS742F
Each
MYR458.39
Temporarily out of stock
Eaton 15A 0.001 x 0.001in Open Fuse Fuse Block, 600V
  • RS Stock No. 229-095
  • Mfr. Part No. BG3011SQ
1 Pack of 10
MYR1,650.00
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1.25kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 345-326
  • Mfr. Part No. C125N42AFM
Each
MYR73,080.03
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-482
  • Mfr. Part No. 3VA5110-5EF31-0AA0
Each
MYR2,916.45
Temporarily out of stock
Siemens 10A Diazed Fuse, gG, 690/600V ac/dc
  • RS Stock No. 167-688
  • Mfr. Part No. 5SD8010
1 Pack of 5
MYR571.65
Temporarily out of stock
Siemens 230V ac Circuit Trip
  • RS Stock No. 223-7656
  • Mfr. Part No. 5TT4462-0
Each
MYR655.16
Temporarily out of stock
Phoenix Contact 1 Phase Surge Protector, 80kA, 1500V (Volts), DIN Rail Mount
  • RS Stock No. 131-666
  • Mfr. Part No. 2910378
Each
MYR1,354.68
Temporarily out of stock
Siemens SENTRON Cable
  • RS Stock No. 277-0882
  • Mfr. Part No. 3WA9111-0BB43
Each
MYR1,511.19
In Stock
Schneider Electric C120 Acti9 C120 MCB, 2P, 125A Curve D, 380 → 415V AC, 250V DC, 30 kA Breaking Capacity
  • RS Stock No. 130-385
  • Mfr. Part No. A9N18503
Each
MYR2,111.67
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 250-4114
  • Mfr. Part No. 1SDA054381R1
Each
MYR19,185.41
In Stock
ABB 220 → 240 V ac, 220 → 250V dc Shunt Trip Shunt trip for use with Tmax XT1, Tmax XT2, Tmax XT3, Tmax
  • RS Stock No. 831-9197
  • Mfr. Part No. 1SDA066325R1
Each
MYR402.32
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 200A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9771
  • Mfr. Part No. LV525452
Each
MYR5,940.12
In Stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 2P, 600V ac
  • RS Stock No. 144-1794
  • Mfr. Part No. 0031.9156
Each (In a Box of 25)
MYR67.199
In Stock
Better World
Schneider Electric 1+N Phase Surge Protector, 2kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 776-3880
  • Mfr. Part No. A9L16298
Each
MYR1,199.22
1
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