Fuses | Circuit Breakers | Circuit Safety | RS
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    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

    44443 產品顯示為 Fuses & Circuit Breakers

    2222 的 999+
    Schneider Electric Acti9 3+N/PE Phase Distribution Board, 8 Way, 250 A
    • RS庫存編號 339-635
    • 製造零件編號 SEA9BPN8E
    个
    HK$3,093.63
    Schneider Electric, PowerPact MCCB 3P 150A, Breaking Capacity 25 kA, DIN Rail Mount
    • RS庫存編號 341-438
    • 製造零件編號 NHJF36150U31XTW
    个
    HK$27,355.78
    Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 5 kA, Fixed Mount
    • RS庫存編號 229-993
    • 製造零件編號 107814 NZMH2-AF40-BT-NA
    个
    HK$6,501.19
    Schneider Electric MasterPacT Locking Kit for use with MasterPact NT
    • RS庫存編號 346-863
    • 製造零件編號 64918
    个
    HK$2,839.04
    RS PRO 4A Ceramic Cartridge Fuse, 10 x 38mm
    • RS庫存編號 180-089
    1 包 10 套
    HK$2,001.72
    Schneider Electric Acti9 3 Phase Distribution Board, 12 Way, 250 A
    • RS庫存編號 339-823
    • 製造零件編號 SEA9BPN12
    个
    HK$5,557.13
    Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 65 kA, Fixed Mount
    • RS庫存編號 256-467
    • 製造零件編號 3VA5560-6GC42-0AA0
    个
    HK$35,156.60
    Siemens SENTRON 5SP37 MCB, 1P, 20A, Type E, 230V AC, 25 kA Breaking Capacity
    • RS庫存編號 328-448
    • 製造零件編號 5SP3720-2
    整套：1 个
    HK$3,236.64
    Siemens 5SV53 RCCB, 16A, 2 Pole, 30mA, Type A, 230V
    • RS庫存編號 328-504
    • 製造零件編號 5SV5311-6KL
    个
    HK$1,209.09
    Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 25 kA, Plug In
    • RS庫存編號 229-538
    • 製造零件編號 113207 NZMB2-4-A125-SVE
    个
    HK$10,667.90
    Eaton Fuse Holder Cable Clamp
    • RS庫存編號 246-740
    • 製造零件編號 183004 XNH2-XCT
    1 包 3 套
    HK$306.92
    Eaton 1A Bolt Fixing Photovoltaic Fuse, 10 x 38mm, 1000V dc, 49.7mm
    • RS庫存編號 703-8248P
    • 製造零件編號 PV-1A10-T
    个 (以每袋裝提供)
    HK$450.10
    Schneider Electric, PowerPact MCCB 3P 30A, Breaking Capacity 18 kA, DIN Rail Mount
    • RS庫存編號 341-439
    • 製造零件編號 NHJL36030
    个
    HK$15,772.87
    Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 100 kA, Fixed Mount
    • RS庫存編號 256-513
    • 製造零件編號 3VA5340-7GF41-2AA0
    个
    HK$29,380.90
    Schneider Electric Cross Elbow Busbar Trunking, 290 → 1200mm, 630A, KSA Series
    • RS庫存編號 335-119
    • 製造零件編號 KSA630DMCK43F
    个
    HK$29,158.53
    Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 35 kA, Fixed Mount
    • RS庫存編號 257-289
    • 製造零件編號 3VA5340-5EC41-2AA0
    个
    HK$22,433.30
    Siemens 63A Tag Fuse, 196 x 60mm, 1.5kV
    • RS庫存編號 299-686
    • 製造零件編號 3NE5318-0MK06
    个
    HK$1,478.81
    Siemens SENTRON 3 Phase Busbar, 400V, 18mm Pitch
    • RS庫存編號 328-470
    • 製造零件編號 5ST3795-4
    个
    HK$409.23
    Schneider Electric, PowerPact MCCB 3P 40A, Breaking Capacity 65 kA, Clip-On
    • RS庫存編號 341-596
    • 製造零件編號 BJF36040
    个
    HK$11,562.82
    32A Fuse Holder for 87 x 25 x 81mm Fuse, 1P, 550V ac
    • RS庫存編號 263-109
    • 製造零件編號 SC32P
    1 包 10 套
    HK$1,564.70
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