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

47282 產品顯示為 Fuses & Circuit Breakers

37 的 999+
Eaton xEffect MCB, 1+N, 4A Curve C
  • RS庫存編號 230-0976
  • 製造零件編號 239058 FAZ6-C4/1N
个
HK$589.70
Eaton MCB, 1+N, 32A Curve C
  • RS庫存編號 230-1099
  • 製造零件編號 264698 PLG6-C32/1N
个
HK$128.80
Eaton 3A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS庫存編號 412-560
  • 製造零件編號 TDC180-3A
个（每托盘 10 ）
HK$12.97
Better World
Siemens SENTRON 5SL MCB, 1+N, 2A Curve D
  • RS庫存編號 232-2274
  • 製造零件編號 5SL4502-8
个
HK$618.20
Better World
Siemens SENTRON 5SY MCB, 1P, 8A Curve C
  • RS庫存編號 232-2310
  • 製造零件編號 5SY5108-7
个
HK$657.50
Better World
ABB System Pro M Compact S200 MCB, 2P, 500mA Curve K
  • RS庫存編號 237-3229
  • 製造零件編號 2CDS252001R0157 S202 K 0.5A - 10 KA
个
HK$713.11
Better World
Schneider Electric Acti 9 Acti9 iDT40K MCB, 3+N, 10A Curve C, 400V AC
  • RS庫存編號 238-3418
  • 製造零件編號 A9P71710
个
HK$1,094.40
Schneider Electric Acti 9 MCB, 3P, 2.5A Curve K
  • RS庫存編號 247-1715
  • 製造零件編號 21106
个
HK$1,438.50
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 3A Curve B, 277V AC
  • RS庫存編號 256-6752
  • 製造零件編號 M9F21203
个
HK$2,313.30
Better World
Siemens SENTRON 5SL4 MCB, 3+N, 20A Curve C, 400V AC, 72V DC
  • RS庫存編號 209-7471
  • 製造零件編號 5SL4420-7
个
HK$1,446.90
Better World
Schneider Electric Multi 9 C60SP MCB, 4P, 10A Curve B, 440V AC, 15 kA Breaking Capacity
  • RS庫存編號 211-2349
  • 製造零件編號 M9F21410
个
HK$1,564.50
Better World
Schneider Electric Multi 9 C60SP MCB, 4P, 20A Curve B, 440V AC, 15 kA Breaking Capacity
  • RS庫存編號 211-2350
  • 製造零件編號 M9F21420
个
HK$1,798.60
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS庫存編號 238-3265
  • 製造零件編號 A9DA6620
个
HK$3,300.61
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 1A Curve D, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS庫存編號 211-2383
  • 製造零件編號 M9F23101
个
HK$436.90
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS庫存編號 238-3328
  • 製造零件編號 A9DS5620
个
HK$2,967.90
Better World
Schneider Electric Multi 9 C60SP MCB, 2P, 40A Curve C, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS庫存編號 211-2370
  • 製造零件編號 M9F22240
个
HK$345.70
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 10A Curve C, 10 kA Breaking Capacity
  • RS庫存編號 214-2065
  • 製造零件編號 M9F11210
个
HK$569.30
Eaton PXF-A RCCB, 16A, 1+N Pole, 30mA, Type A, 230V ac
  • RS庫存編號 490-040
  • 製造零件編號 236730 PXF-16/2/003-A
个
HK$946.60
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 2A Curve C, 10 kA Breaking Capacity
  • RS庫存編號 214-2060
  • 製造零件編號 M9F11202
个
HK$642.40
ABB RCBO, 4A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, System Pro M Compact Range
  • RS庫存編號 201-6872
  • 製造零件編號 2CSR255180R3044 DS201 C4 A300
个
HK$1,687.60
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