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

13 的 999+
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 10A Curve C, 277V AC, 227V DC
  • RS庫存編號 256-6799
  • 製造零件編號 M9F52210
个
HK$2,040.50(不含稅)
RS PRO 2A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS庫存編號 668-6079
个（每托盘 10 ）
HK$4.41(不含稅)
Hager MJT MCB, 2P, 10A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS庫存編號 144-4949
  • 製造零件編號 MJT710
个
HK$268.70(不含稅)
Bourns 8A Resettable Fuse, 30V
  • RS庫存編號 647-8639
  • 製造零件編號 MF-R800
个（每托盘 10 ）
HK$4.71(不含稅)
RS PRO 2A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS庫存編號 177-8100
个（每托盘 20 ）
HK$4.73(不含稅)
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 20A Current Rating
  • RS庫存編號 899-1774
  • 製造零件編號 2E20UM
个
HK$295.90(不含稅)
Lovato 32A Fuse Holder for 10 x 38mm Fuse, 3P, 690V ac
  • RS庫存編號 248-5511
  • 製造零件編號 FB01B3N
个
HK$211.00(不含稅)
Lovato 32A Rail Mount Fuse Holder, 1P, 690V ac
  • RS庫存編號 188-1613
  • 製造零件編號 FB01B1P
个
HK$46.70(不含稅)
Bourns 0.25A Resettable Fuse, 240V ac
  • RS庫存編號 775-6044P
  • 製造零件編號 MF-RM025/240-2
个 (以每卷裝提供)
HK$3.90(不含稅)
ABB DDA200 RCD, 63A, 2 Pole, 30mA
  • RS庫存編號 225-6077
  • 製造零件編號 2CSB202701R1630 DDA202 A-63/0,03
个
HK$2,510.31(不含稅)
Better World
ABB System Pro M Compact S200 MCB, 2P, 1A Curve C, 400V AC, 125V DC, 6 kA Breaking Capacity
  • RS庫存編號 746-7696
  • 製造零件編號 2CDS252001R0014 S202-C1
个
HK$463.80(不含稅)
ETA Thermal Circuit Breaker - 1140-E Single Pole 250V Voltage Rating Integral Mount, 4A Current Rating
  • RS庫存編號 728-8658
  • 製造零件編號 1140-E211-P1M1-4A
个
HK$121.88(不含稅)
Eaton PC Board Non Resettable Fuse, Radial 1.25A, 300V ac
  • RS庫存編號 169-9518
  • 製造零件編號 SR-5H-1-25A-BK
个 (以毎袋：200)
HK$16.591(不含稅)
RS PRO 63A Bolted Tag Fuse, A3, 250 V dc, 415V ac, 73mm
  • RS庫存編號 221-3727
个
HK$155.80(不含稅)
RS PRO PC Board Non Resettable Fuse, Radial 6.3A, 250V ac
  • RS庫存編號 767-5068
个（每托盘 10 ）
HK$2.48(不含稅)
Littelfuse SMD Non Resettable Fuse 5A, 32V
  • RS庫存編號 787-4230
  • 製造零件編號 0466005.NR
个（每托盘 5 ）
HK$5.70(不含稅)
ABB RCBO, 16A Current Rating, 3P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS庫存編號 767-4403
  • 製造零件編號 2CSR273001R1164 DS203 M AC-C16/0,03
个
HK$1,646.10(不含稅)
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(不含稅)
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS庫存編號 914-4051
  • 製造零件編號 2CSR255051R1204 DSE201 C20 AC30 - N Blue
个
HK$684.40(不含稅)
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 6A Curve C, 100 → 133V AC, 12 → 48V DC, 6 kA Breaking Capacity
  • RS庫存編號 790-8850
  • 製造零件編號 A9F44106
个
HK$273.40(不含稅)
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