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

34963 Products showing for Fuses & Circuit Breakers

1733 of 999+
Lovato 32A Rail Mount Fuse Holder, 3P+N, 690V ac
  • RS Stock No. 216-8281
  • Mfr. Part No. FB01F3N
Each
$65.18(exc. GST)
KYOCERA AVX SMD Non Resettable Fuse 200mA, 63V
  • RS Stock No. 707-6837P
  • Mfr. Part No. F1206B0R20FSTR
Each (Supplied on a Reel)
$0.998(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-4592
  • Mfr. Part No. 1SDA072850R1
Each
$20,776.81(exc. GST)
Eaton Circuit Breaker - NZM..-ME..NA 3 Pole 690V ac Voltage Rating, 90A Current Rating
  • RS Stock No. 250-9758
  • Mfr. Part No. 142424 NZMH2-ME90-BT-NA
Each
$4,040.89(exc. GST)
WR-FSH Fuseholder Clip Black SMT 5x20mm
  • RS Stock No. 563-074P
  • Mfr. Part No. 696103201002
Each (Supplied in a Box)
$22.72(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4690
  • Mfr. Part No. 3VA2163-0HM42-0AA0
Each
$4,128.16(exc. GST)
Littelfuse 125mA F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3185P
  • Mfr. Part No. 0KLK.125T
Each (Supplied in a Bag)
$42.47(exc. GST)
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 258-106
  • Mfr. Part No. 283875 XBST12-1
Each
$266.07(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4746
  • Mfr. Part No. 3VA2163-7HN42-0AA0
Each
$2,545.10(exc. GST)
Schurter SMD Non Resettable Fuse 4A, 277 V ac, 125V dc
  • RS Stock No. 830-4209P
  • Mfr. Part No. 3403.0280.23
Each (Supplied on a Reel)
$2.736(exc. GST)
Schurter Thermal Circuit Breaker - T9 Single Pole 48 V dc, 240V ac Voltage Rating, 3A Current Rating
  • RS Stock No. 830-4280P
  • Mfr. Part No. 4404.0096
Each (Supplied in a Bag)
$7.62(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-326
  • Mfr. Part No. 3VA6460-7KT41-0AA0
Each
$25,110.36(exc. GST)
Circuit-breaker/thermal 12 A
  • RS Stock No. 577-458
  • Mfr. Part No. 1140-G111-P1M1-12A
Each
$24.16(exc. GST)
Schneider Electric Panelset Busbar
  • RS Stock No. 444-417
  • Mfr. Part No. NSYVPFN2B4
Each
$4,482.68(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-4188
  • Mfr. Part No. 1SDA072307R1
Each
$19,700.04(exc. GST)
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-3755
  • Mfr. Part No. 1SDA071740R1
Each
$40,552.24(exc. GST)
Eaton IZMX40N3-P08F-1 Electronic Circuit Breaker 800A , Fixed
  • RS Stock No. 132-820
  • Mfr. Part No. 183582 IZMX40N3-P08F-1
Each
$23,606.11(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-4713
  • Mfr. Part No. 1SDA072990R1
Each
$28,323.38(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 629-317
  • Mfr. Part No. 8GK1383-1KK23
Each
$1,520.46(exc. GST)
Siemens Fuse Holder Base Cover Fuse Holder Cover
  • RS Stock No. 232-2072
  • Mfr. Part No. 5SH5243
Each (In a Pack of 4)
$9.073(exc. GST)
1
1733
1749
Results per page

Related links