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

167 of 999+
Siemens SENTRON Option Plug
  • RS Stock No. 277-0911
  • Mfr. Part No. 3WA9111-0EB50
Each
$443.98(exc. GST)
RS PRO Non-Resettable Surface Mount Fuse 1A, 63V ac/dc
  • RS Stock No. 764-9403
Each (In a Pack of 10)
$0.21(exc. GST)
Eaton 160A Centred Tag Fuse, NH02, 500V ac
  • RS Stock No. 703-8730P
  • Mfr. Part No. 160NHG02B
Each (Supplied in a Bag)
$37.35(exc. GST)
Hager RCBO, 32A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type AC
  • RS Stock No. 251-2019
  • Mfr. Part No. ADC732F
Each
$510.04(exc. GST)
Siemens ALPHA Assembly Kit for use with Terminal Block
  • RS Stock No. 629-204
  • Mfr. Part No. 8GK4003-8KK13
Each
$676.35(exc. GST)
Eaton 315A NH Fuse, NH03, 500V
  • RS Stock No. 703-8752P
  • Mfr. Part No. 315NHG03B
Each (Supplied in a Bag)
$361.90(exc. GST)
Eaton NZM Circuit Breaker for use with Circuit Breaker
  • RS Stock No. 242-916
  • Mfr. Part No. 192286 NZMN3-4-PX250/VAR-TAZ
Each
$10,611.83(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - LELHK11 2 Pole Panel Mount, 7A Current Rating
  • RS Stock No. 275-0386
  • Mfr. Part No. LELHK11-1-62-7.00-U-01-V
Each
$427.76(exc. GST)
Eaton 125A NH Fuse, 63 x 40 x 150mm, 500V ac
  • RS Stock No. 244-283
  • Mfr. Part No. 125NHG02BI NH FUSE 125A 500V GL/GG SIZE 02
1 Pack of 3
$69.88(exc. GST)
Eaton 16A DIN Rail Mount 6.3 x 32mm Fuse Block, 300V
  • RS Stock No. 233-0624
  • Mfr. Part No. BK-S-8202-1X-DIN
Each (In a Pack of 10)
$10.189(exc. GST)
Eaton 15A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7058
  • Mfr. Part No. MDA-15-R
Each
$14.03(exc. GST)
Phoenix Contact Thermal Circuit Breaker - CB TM1 Single Pole 50V dc Voltage Rating, 10A Current Rating
  • RS Stock No. 217-6363
  • Mfr. Part No. 2800865
Each
$88.23(exc. GST)
Siemens Fuse Holder Diazed Adapter Screw
  • RS Stock No. 202-7137
  • Mfr. Part No. 5SH316
Each (In a Pack of 25)
$3.224(exc. GST)
Siemens 2A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 203-2046
  • Mfr. Part No. 3NW6002-1
Each (In a Pack of 10)
$10.054(exc. GST)
Wickmann 7.5A Brown Blade Car Fuse, 58V dc
  • RS Stock No. 174-0756
  • Mfr. Part No. 099707.5WXN
Each (In a Pack of 10)
$1.223(exc. GST)
Schneider Electric EasyPact Electronic Circuit Breaker 25A, Fixed
  • RS Stock No. 122-505
  • Mfr. Part No. LV510561
Each
$543.00(exc. GST)
Better World
ABB System Pro M Compact S200M MCB, 2P, 1A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 131-882
  • Mfr. Part No. 2CDS272001R0014 S202M-C1
Each
$172.35(exc. GST)
HENSEL ENYSTAR Distribution Board, 63 A
  • RS Stock No. 117-479
  • Mfr. Part No. FP 1217
Each
$425.39(exc. GST)
Eaton IZMX/INX Cassette for use with INX16…4-…W, IZMX16…4-…W
  • RS Stock No. 132-945
  • Mfr. Part No. 183956 IZMX-CAS164-1600-SEC-1
Each
$6,412.56(exc. GST)
Inventronics Surge Protector, 5kA, 10kV, Surface Mount Mount
  • RS Stock No. 285-370
  • Mfr. Part No. PU-10KD05KBTA
Each
$19.94(exc. GST)
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