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

1728 of 999+
Schneider Electric, MasterPact MTZ1 Circuit Breaker Accessory
  • RS Stock No. 119-199
  • Mfr. Part No. LV833815
Each
$1,243.47(exc. GST)
Eaton 24V ac Undervoltage Release Circuit Trip for use with N(S)1(-4), NZM1(-4)
  • RS Stock No. 454-8168
  • Mfr. Part No. 259434 NZM1-XU24AC
Each
$293.10(exc. GST)
RS PRO SMD Non Resettable Fuse 40A, 60V
  • RS Stock No. 182-4074P
Each (Supplied in a Box)
$6.986(exc. GST)
Eaton 250A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 182-1379
  • Mfr. Part No. 170M1571D
Each (In a Box of 10)
$428.909(exc. GST)
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 259-159
  • Mfr. Part No. 283888 XDSF08
Each
$254.30(exc. GST)
Wickmann Resettable Fuse, 125V
  • RS Stock No. 174-0703
  • Mfr. Part No. 046002.5UR
Each (In a Pack of 5)
$4.17(exc. GST)
FI/LS-Schalter Resi9 1P+N, 10A, B-Char.,
  • RS Stock No. 537-862
  • Mfr. Part No. R9D41610
Each
$555.28(exc. GST)
Eaton Circuit Breaker - NZM..-ME..NA 3 Pole 690V ac Voltage Rating, 200A Current Rating
  • RS Stock No. 250-9757
  • Mfr. Part No. 142423 NZMN2-ME200-BT-NA
Each
$5,533.29(exc. GST)
ABB SMISSLINE Busbar for Smissline TP
  • RS Stock No. 246-2329
  • Mfr. Part No. 2CCF800241R0001
Each
$29.44(exc. GST)
Hager BDC RCD, 25A, 4 Pole, 30mA, Type AC
  • RS Stock No. 144-4849
  • Mfr. Part No. BDC825
Each
$719.49(exc. GST)
Schneider Electric Resi9 Resi9 XE DM MCB, 1P, 20A Curve D, 230V AC, 3000 A Breaking Capacity
  • RS Stock No. 287-6048
  • Mfr. Part No. R9EFD620
Each
$92.24(exc. GST)
Schneider Electric Resi9 R9F2 MCB, 1P, 6A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-202
  • Mfr. Part No. R9F23106
Each
$36.73(exc. GST)
Sato Parts 10A Rail Mount Fuse Holder for 6.3 x 32 mm, 6.35 x 30 x 6.35 x 31.8 mm Fuse, 1P, 250V
  • RS Stock No. 229-4967
  • Mfr. Part No. F-700-B
Each
$5.75(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-9947
  • Mfr. Part No. 1SDA070824R1
Each
$9,718.86(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-3468
  • Mfr. Part No. 1SDA071424R1
Each
$12,205.92(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3880
  • Mfr. Part No. 3VA2063-7KP36-0AA0
Each
$4,199.70(exc. GST)
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 3 channels
  • RS Stock No. 259-3385
  • Mfr. Part No. 1SDA071308R1
Each
$114,966.05(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - CPP Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0186
  • Mfr. Part No. CPP11-52-20.0A-OB-V
Each
$35.12(exc. GST)
Accessory 17PLUS
  • RS Stock No. 577-488
  • Mfr. Part No. SB-S11-P1-01-1-1A
Each
$40.48(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 3 channels
  • RS Stock No. 155-815
  • Mfr. Part No. 3VA2325-8KP32-0AA0
Each
$8,036.85(exc. GST)
1
1728
1758
Results per page

Related links