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

47265 產品顯示為 Fuses & Circuit Breakers

5 的 999+
有庫存
Littelfuse PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS庫存編號 541-3259
  • 製造零件編號 0251.500NRT1L
个（每托盘 10 ）
HK$6.60
有庫存
Bourns SMD Non Resettable Fuse 15A, 250V ac
  • RS庫存編號 187-8675
  • 製造零件編號 SF-3812F1500T-2
个（每托盘 10 ）
HK$24.85
有庫存
Mersen 800mA F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 270-3063
  • 製造零件編號 K090514
个 (以毎盒：10)
HK$4.46
有限的庫存
Limitor Thermal Fuse +80°C 2.5 A, 250V ac
  • RS庫存編號 176-9148
  • 製造零件編號 P82 80 05100
个
HK$50.60
暫時缺貨
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 25 kA, Fixed Mount
  • RS庫存編號 209-5010
  • 製造零件編號 3VA1163-3EF32-0AA0
个
HK$2,999.70
有庫存
SIBA 200A Centred Tag Fuse, NH1, 500V ac
  • RS庫存編號 421-788
  • 製造零件編號 20-003-13/200A
个
HK$218.20
有庫存
ABB System Pro M Compact S200M MCB, 3P, 25A Curve D, 400V AC, 15 kA Breaking Capacity
  • RS庫存編號 746-8181
  • 製造零件編號 2CDS273001R0251 S203M-D25
个
HK$740.90
有庫存
Eaton MCB, 1+N, 2A Curve C
  • RS庫存編號 230-1095
  • 製造零件編號 264690 PLG6-C2/1N
个
HK$138.00
有庫存
Eaton xEffect MCB, 1P, 3A Curve D
  • RS庫存編號 230-1037
  • 製造零件編號 177486 FAZ6-D3/1
个
HK$288.46
最後的 RS 庫存
Contactum MCB, 1P, 6A Curve B, 250V AC, 6 kA Breaking Capacity
  • RS庫存編號 184-9021
  • 製造零件編號 CPB06
个
HK$29.50
有庫存
RS PRO 20A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS庫存編號 247-3955
个（每托盘 10 ）
HK$16.97
暫時缺貨
RS PRO MCB, 1P, 10A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS庫存編號 265-0195
个
HK$85.80
有庫存
Eaton RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, PXK Range
  • RS庫存編號 183-3545
  • 製造零件編號 236964 PXK-C16/1N/003-A
个
HK$595.40
有庫存
Better World
Siemens Sentron 5SY4 MCB, 2P, 10A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS庫存編號 772-1303
  • 製造零件編號 5SY4210-7
个
HK$720.70
有庫存
Eaton 20A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS庫存編號 851-1444
  • 製造零件編號 SFE-20
个（每托盘 5 ）
HK$8.70
暫時缺貨
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS庫存編號 746-7863
  • 製造零件編號 2CDS252001R0161 S202-D16
个
HK$490.97
有庫存
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 13A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS庫存編號 776-3200
  • 製造零件編號 A9N61529
个
HK$1,511.40
暫時缺貨
Better World
Siemens SENTRON 5SY6 MCB, 2P, 32A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS庫存編號 209-6017
  • 製造零件編號 5SY6232-7
个
HK$821.70
有庫存
ABB RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS庫存編號 201-6943
  • 製造零件編號 2CSR255080R1405 DS201 B40 AC30
个
HK$1,034.00
有庫存
RS PRO 5A F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 610-9721
个（每托盘 10 ）
HK$2.80
1
5
2364
每頁顯示的結果

相关链接