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

3 的 999+
暫時缺貨
ABB 800A Tag Fuse, NH3, 500V
  • RS庫存編號 251-3493
  • 製造零件編號 1SCA022627R7240
个
HK$918.43
有庫存
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 20A Current Rating
  • RS庫存編號 210-2071
  • 製造零件編號 3120-N521-H7T1-W01D-20A
个
HK$383.70
有庫存
Littelfuse 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 541-4375
  • 製造零件編號 0217001.MXP
个（每托盘 10 ）
HK$2.94
有庫存
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 20A Current Rating
  • RS庫存編號 405-9179
  • 製造零件編號 2-5700-IG1-P10-DD-000040-20A
个
HK$257.20
有庫存
Bourns Thermal Fuse +82°C 60 A, 28V
  • RS庫存編號 258-6396
  • 製造零件編號 SA82SB0
个（每托盘 10 ）
HK$6.02
有庫存
Mersen 80A German Standard Fuse, NH00, 690V ac, 77mm
  • RS庫存編號 287-0895
  • 製造零件編號 D330237
个
HK$612.40
有庫存
Eaton 20A British Standard Fuse, A1, 550V ac, 42.5mm
  • RS庫存編號 139-899
  • 製造零件編號 NITD20M32
个（每托盘 5 ）
HK$74.14
暫時缺貨
Siemens RCBO, 40A Current Rating, 2P Poles, 300mA Trip Sensitivity, Type A, SENTRON Range
  • RS庫存編號 211-9582
  • 製造零件編號 5SM2633-6
个
HK$939.50
有庫存
SIBA 5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS庫存編號 783-3324
  • 製造零件編號 70-007-65/5A
个（每托盘 10 ）
HK$5.89
正在逐步停售
RS PRO 800mA F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 563-655
个（每托盘 10 ）
HK$2.85
有庫存
Eaton RCBO, 16A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS庫存編號 123-284
  • 製造零件編號 170740 FRBMM-C16/3/003-A
个
HK$1,627.03
有庫存
RS PRO 6.3A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS庫存編號 177-8098
个（每托盘 5 ）
HK$19.164
有庫存
Eaton RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBm6 Range
  • RS庫存編號 123-306
  • 製造零件編號 170802 FRBM6-C40/2/003-LIA
个
HK$1,655.58
有庫存
ABB RCBO, 40A Current Rating, 4P Poles, Type C
  • RS庫存編號 237-5215
  • 製造零件編號 2CSR274101R1404
个
HK$3,881.50
有限的庫存
ABB SN201 MCB, 1+N, 2A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS庫存編號 191-9456
  • 製造零件編號 2CSS245102R0024 SN201 L C2-L
个
HK$151.30
暫時缺貨
Hager RCBO, 40A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A
  • RS庫存編號 602-212
  • 製造零件編號 ADX490C
个
HK$6,792.10
有庫存
Eaton Bussmann Series 4A Bolted Tag Fuse, 240V ac, 35mm
  • RS庫存編號 181-8884
  • 製造零件編號 LST4
个
HK$70.42
暫時缺貨
Hager RCBO, 40A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A
  • RS庫存編號 602-209
  • 製造零件編號 ADM490C
个
HK$6,430.90
有庫存
Eaton 125mA F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 537-8645
  • 製造零件編號 S500-125-R
个（每托盘 10 ）
HK$24.93
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
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