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

257 of 999+
In Stock
Eaton 300A British Standard Fuse, 660V, 81.7mm
  • RS Stock No. 414-982
  • Mfr. Part No. GSGB300
Each
$502.33(exc. GST)
Temporarily out of stock
Siemens 250A Tag Fuse, NH1Lmm, 1.25kV
  • RS Stock No. 627-113
  • Mfr. Part No. 3NB1128-4KK11
1 Pack of 2
$2,321.08(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-233
  • Mfr. Part No. 3VA6210-6KQ41-0AA0
Each
$14,055.95(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 65V dc Voltage Rating DIN Rail, 3A Current Rating
  • RS Stock No. 135-504
  • Mfr. Part No. 0914837
1 Pack of 3
$880.25(exc. GST)
In Stock
Eaton 300mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7143
  • Mfr. Part No. MDL-3-10-R
Each
$12.93(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA
  • RS Stock No. 209-6885
  • Mfr. Part No. 3VA2010-5JP32-0AA0
Each
$2,477.90(exc. GST)
Temporarily out of stock
Siemens SENTRON Interlock Kit for use with 3VA12
  • RS Stock No. 152-781
  • Mfr. Part No. 3VA9257-0VF10
Each
$291.76(exc. GST)
Temporarily out of stock
Schneider Electric MasterPact Connection Unit for use with MTZ1 06-16
  • RS Stock No. 212-069
  • Mfr. Part No. LV833733
Each
$945.60(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - TCP Single Pole 32V dc Voltage Rating On Base Element, 10A Current Rating
  • RS Stock No. 556-666
  • Mfr. Part No. 1499942
1 Pack of 100
$1,517.86(exc. GST)
Temporarily out of stock
Hager Hager NKN Circuit Breaker, 4P, 32A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-805
  • Mfr. Part No. NKN432
Each
$596.40(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-472
  • Mfr. Part No. 3VA6115-5KT31-0AA0
Each
$5,538.85(exc. GST)
Temporarily out of stock
Hager Hager HMX Circuit Breaker, 3P, 32A Curve C, 415V AC, 50 kA Breaking Capacity
  • RS Stock No. 599-783
  • Mfr. Part No. HMX332
Each
$1,202.15(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 12A Current Rating
  • RS Stock No. 210-2065
  • Mfr. Part No. 3120-N521-H7T1-W01D-12A
Each
$80.49(exc. GST)
In Stock
Bourns 2.6A Resettable Fuse, 6V
  • RS Stock No. 245-9156P
  • Mfr. Part No. MF-LSMF260/6X-2
Each (Supplied on a Reel)
$1.245(exc. GST)
Temporarily out of stock
Eaton 25A NH Fuse, 58 x 30 x 135mm, 500V ac
  • RS Stock No. 254-470
  • Mfr. Part No. 25NHG01BI NH FUSE 25A 500V GL/GG SIZE 01
1 Pack of 3
$53.67(exc. GST)
In Stock
Clipsal Electrical RCBO, 32A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type A, MAX9 Range
  • RS Stock No. 282-2978
  • Mfr. Part No. MX9R3132
Each
$71.07(exc. GST)
In Stock
RS PRO 25A Cartridge Fuse, 13 x 29mm
  • RS Stock No. 413-844
Each (In a Pack of 10)
$9.614(exc. GST)
Temporarily out of stock
Eaton Cover for use with NS2(-4), NZM2(-4), PN2(-4)
  • RS Stock No. 230-503
  • Mfr. Part No. 119870 NZM2-4-XKSAE
Each
$73.73(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM DC Link Kit for use with N2-4-S1(-S15)-DC
  • RS Stock No. 247-867
  • Mfr. Part No. 131730 NZM2-4-XKV2P
Each
$531.31(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 60A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 269-756
  • Mfr. Part No. 3VA5260-5ED41-2AA0
Each
$2,556.39(exc. GST)
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