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

47290 產品顯示為 Fuses & Circuit Breakers

15 的 999+
Eaton 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 537-1262
  • 製造零件編號 S500-250-R
个（每托盘 10 ）
HK$23.98
RS PRO MCB, 1P, 4A Curve B, 240 → 415V AC, 10 kA Breaking Capacity
  • RS庫存編號 265-0170
个
HK$82.40
RS PRO 125mA T Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 563-734
个（每托盘 10 ）
HK$3.549
Mersen Surge Protector
  • RS庫存編號 179-3068
  • 製造零件編號 83230127 / STPT23-20K275V-4PG-LFM
个
HK$2,050.27
Littelfuse 0.12A Resettable Fuse, 240V dc
  • RS庫存編號 495-0713P
  • 製造零件編號 LVR012K
个 (以每袋裝提供)
HK$4.52
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 80A Current Rating
  • RS庫存編號 175-1447
  • 製造零件編號 GV4L80N
个
HK$5,155.70
Littelfuse 0.3A Resettable Fuse, 72V
  • RS庫存編號 517-6613P
  • 製造零件編號 RXEF030
个 (以每袋裝提供)
HK$2.40
Phoenix Contact Thermomagnetic Device Circuit Breaker Thermal Circuit Breaker - CB Single Pole 50V dc Voltage Rating,
  • RS庫存編號 212-8787
  • 製造零件編號 2800854
个
HK$348.80
ETA Thermal Circuit Breaker - 3130 Single Pole 240V Voltage Rating Snap In, 15A Current Rating
  • RS庫存編號 212-1913
  • 製造零件編號 3130-F110-P7T1-W02Q-15A
个
HK$221.70
ETA Thermal Circuit Breaker - 3130 Single Pole 50 V dc, 250V ac Voltage Rating Snap In, 5A Current Rating
  • RS庫存編號 212-2130
  • 製造零件編號 3130-F110-P7T1-W14QR7-5A
个
HK$288.64
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 16A Current Rating
  • RS庫存編號 221-5618
  • 製造零件編號 3-128-230
个
HK$164.20
ETA Thermal Circuit Breaker - 4130 Single Pole 240V Voltage Rating Panel Mount, 30A Current Rating
  • RS庫存編號 405-9208
  • 製造零件編號 4130-G211-K4M1-30A
个
HK$486.80
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS庫存編號 273-0882
  • 製造零件編號 1658-G21-02-P10-15A
个
HK$42.80
Sensata Airpax Airpax Thermal Circuit Breaker - IELHK111 3 Pole Panel Mount, 90A Current Rating
  • RS庫存編號 275-0251
  • 製造零件編號 IELHK111-1-62F-90.0-AB-01-V
个
HK$2,498.80
TE Connectivity Thermal Circuit Breaker - W68 2 Pole 277V ac Voltage Rating, 10A Current Rating
  • RS庫存編號 782-7846
  • 製造零件編號 W68-X2Q12-10
个
HK$890.40
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS庫存編號 405-9157
  • 製造零件編號 2-5700-IG1-P10-DD-000040-15A
个
HK$183.70
Schneider Electric TeSys Thermal Magnetic Circuit Breaker - GB2 1P + N Pole 250V ac Voltage Rating DIN Rail Mount, 2A
  • RS庫存編號 323-9009
  • 製造零件編號 GB2CD07
个
HK$530.10
TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 15A Current Rating
  • RS庫存編號 782-0860
  • 製造零件編號 W23-X1A1G-15
个
HK$284.20
Schurter Thermal Circuit Breaker - T11-211 Single Pole 48 V dc, 240V ac Voltage Rating Panel Mount, 3A Current Rating
  • RS庫存編號 868-8778
  • 製造零件編號 4400.0010
个
HK$89.50
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 3A Current Rating
  • RS庫存編號 899-1796
  • 製造零件編號 2E3UM
个
HK$295.90
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