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

149 of 999+
Schneider Electric Canalis 1 Phase Busbar, 230-400V
  • RS Stock No. 212-224
  • Mfr. Part No. KBA40ED2305W
1 Pack of 6
$2,956.97(exc. GST)
Eaton 6A Cartridge Fuses, 14 x 51mm
  • RS Stock No. 229-193
  • Mfr. Part No. C14G6S CYL FUSE >STR >14 x 51 6A GG 690V AC
1 Pack of 10
$159.48(exc. GST)
RS PRO 16A Cartridge Fuse, 13 x 29mm
  • RS Stock No. 413-822
Each (In a Pack of 10)
$9.61(exc. GST)
Schneider Electric, NSX MCCB 4P 160A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 219-8356
  • Mfr. Part No. LV430896
Each
$4,477.62(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 30A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-566
  • Mfr. Part No. 3VA5130-4ED41-0AA0
Each
$1,396.88(exc. GST)
Schneider Electric ComPacT Insulation accessory for use with Compact NSXm
  • RS Stock No. 346-623
  • Mfr. Part No. LV426948T
Each
$99.32(exc. GST)
Schneider Electric, ComPacT MCCB 3P 500A, Fixed Mount
  • RS Stock No. 260-8200
  • Mfr. Part No. C63F32M500
Each
$11,368.26(exc. GST)
ABB AC Switch Disconnectors Accessories Earth & Neutral Terminal Bar for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9721
  • Mfr. Part No. 1SCA105718R1001
Each
$19.92(exc. GST)
Phoenix Contact Thermal Circuit Breaker - TCP 250V ac Voltage Rating On Base Element, 5A Current Rating
  • RS Stock No. 557-491
  • Mfr. Part No. 1538622
1 Pack of 20
$1,944.33(exc. GST)
Eaton 50A British Standard Fuse, 240V ac, 43mm
  • RS Stock No. 414-774
  • Mfr. Part No. GSA50
Each (In a Pack of 5)
$140.286(exc. GST)
xComfort Distribution Board, 1 Way
  • RS Stock No. 263-495
  • Mfr. Part No. 302439 KLV-60HWP-HY36-F
Each
$1,003.02(exc. GST)
Eaton 20A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 182-1790
  • Mfr. Part No. 170M1560D
Each
$355.36(exc. GST)
Mersen 20A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 270-3146
  • Mfr. Part No. Y233448
Each (In a Box of 10)
$1.594(exc. GST)
Murrelektronik Limited Mico Pro Electronic Circuit Breaker 40mA 30V Mico Pro, 1 channels , DIN Rail Mount
  • RS Stock No. 270-9603
  • Mfr. Part No. 9000-41190-0000000
Each
$179.63(exc. GST)
Eaton 50mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9397
  • Mfr. Part No. S500-50-R
1 Bag of 1000
$10,314.15(exc. GST)
SIBA 2.5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3318
  • Mfr. Part No. 70-007-65/2.5A
Each (In a Pack of 10)
$0.17(exc. GST)
ABB 12 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1892
  • Mfr. Part No. 1SL1202A00 65P12X12
Each
$79.18(exc. GST)
Hager CDC RCD Switch, 25A, 4 Pole, 30mA, Type AC, 230 → 400V
  • RS Stock No. 599-742
  • Mfr. Part No. CDC427F
Each
$494.35(exc. GST)
Siemens ALPHA Flange Plate for use with ALPHA 1250 DIN
  • RS Stock No. 628-992
  • Mfr. Part No. 8GK9100-0KK14
Each
$129.43(exc. GST)
Mersen 400A Bolted Tag Fuse, B4, 240 V dc, 415V ac, 111mm
  • RS Stock No. 178-1075
  • Mfr. Part No. F226325 / BTMF42V400
Each
$185.36(exc. GST)
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