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

35151 Products showing for Fuses & Circuit Breakers

177 of 999+
Eaton 350A Tag Fuse, 50mm, 1kV
  • RS Stock No. 282-6201
  • Mfr. Part No. FWE-350A
Each
$820.02(exc. GST)
Eaton Eaton Distribution Parts 3 Phase Busbar, 690V
  • RS Stock No. 248-751
  • Mfr. Part No. 104899 Z-SV/UL-16/3P-3TE/12
Each
$67.72(exc. GST)
ETA Thermal Circuit Breaker - 3130 Single Pole 240V Voltage Rating Snap In, 15A Current Rating
  • RS Stock No. 212-1913
  • Mfr. Part No. 3130-F110-P7T1-W02Q-15A
Each
$81.53(exc. GST)
TE Connectivity Thermal Circuit Breaker - W54 Single Pole 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 782-7969
  • Mfr. Part No. W54-XB1A4A10-10
Each
$14.29(exc. GST)
Schurter 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 3P, 1kV
  • RS Stock No. 173-7973
  • Mfr. Part No. 0091.0003
Each (In a Box of 4)
$76.74(exc. GST)
RS PRO 25A NH Fuse, NH000, 415V ac
  • RS Stock No. 221-3671
Each (In a Pack of 3)
$33.253(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 400mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-097
  • Mfr. Part No. 3RV2311-0EC10
Each
$395.63(exc. GST)
Better World
Schneider Electric Earthing Strip
  • RS Stock No. 222-3856
  • Mfr. Part No. NSYECB1M153
Each
$192.31(exc. GST)
Socomec 160A Rail Mount Fuse Holder for 00 Fuse, 1P, 690V
  • RS Stock No. 233-3343
  • Mfr. Part No. 65001110
Each (In a Pack of 3)
$38.29(exc. GST)
Better World
Schneider Electric 125A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P+N, 690V ac
  • RS Stock No. 482-483
  • Mfr. Part No. DF223NVC
Each
$524.51(exc. GST)
Eaton 125mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9447
  • Mfr. Part No. S506-125-R
1 Bag of 1000
$7,503.10(exc. GST)
RS PRO Thermal Circuit Breaker - 2 Pole 250V ac Voltage Rating, 1.6A Current Rating
  • RS Stock No. 774-0083
Each
$5.45(exc. GST)
nVent ERICO Earth Bar
  • RS Stock No. 277-6240
  • Mfr. Part No. EEB10C506D0A
Each
$670.33(exc. GST)
Siemens 3RV29 Phase Barrier for use with Circuit breaker
  • RS Stock No. 211-5964
  • Mfr. Part No. 3RV2938-1K
Each
$66.42(exc. GST)
Wickmann 2A Resettable Fuse, 12V dc
  • RS Stock No. 174-0710
  • Mfr. Part No. 1812L200/12DR
Each (In a Pack of 5)
$2.876(exc. GST)
Siemens 63A D02 Neozed Fuse, gR, 400V
  • RS Stock No. 216-4806
  • Mfr. Part No. 5SE1363
Each (In a Pack of 10)
$68.908(exc. GST)
SRP120F
  • RS Stock No. 552-423
  • Mfr. Part No. RF1669-000
1 Bag of 100
$75.59(exc. GST)
Nidec Components 0.05A Resettable Fuse, 60V
  • RS Stock No. 637-6280
  • Mfr. Part No. PRCP-R005-0-99
Each (In a Pack of 10)
$1.076(exc. GST)
Eaton 630A Bolted Tag Fuse, C2, 450 V dc, 660V ac, 133mm
  • RS Stock No. 182-1401
  • Mfr. Part No. TTM630
Each
$669.75(exc. GST)
Siemens, SENTRON MCCB 3P 300A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 256-561
  • Mfr. Part No. 3VA5330-7EC31-2AA0
Each
$10,777.78(exc. GST)
1
177
1758
Results per page

Related links