OverviewKYB7-63PV series AC and DC general miniature circuit
breakers (hereinafter referred to as circuit breakers) adopt
advanced arc ignition and arc extinguishing technology, current
limiting technology and fast opening and closing mechanism, which
can quickly and reliably break the short-circuit current in the AC
and DC power distribution system. The rated working current and
critical current (DC). Tailored for PV DC users (with invention
patents), its features are as follows: The AC and DC power
distribution is universal, and the non-polar wiring method is
adopted, which is convenient for users to connect and avoid
accidents caused by incorrect positive and negative wiring in the
DC system. With three-level current limiting capability, it can
provide excellent backup protection, that is, it can greatly limit
the l2t value caused by the current heating effect, ensuring that
the power grid maintains low load operation and reducing the damage
of the heating effect. The thermal trip unit and the
electromagnetic trip unit directly act on the transmission
mechanism equipped with moving contacts, and have the functions of
delay overload protection and instantaneous protection. The
position indicator window can always and reliably display the exact
position of the contact. When the handle is in the OFF position,
the circuit breaker can ensure the isolation of the circuit. It can
be directly installed on the DIN rail without affecting its
characteristics, and the installation is convenient and flexible.
Using a unique magnetic blowing arc extinguishing device, it can
reliably break the short-circuit current, the rated working
current, and the critical current (DC). Good reliability: suitable
for all possible low-voltage DC applications, such as AC systems
and DC trains, DC grids, photovoltaic systems, and DC communication
systems under 30OV, and feedback for reverse current generated by
faulty photovoltaic strings and faulty inverters The return AC
regenerative load can provide reliable protection.Normal working
conditions Air temperature: use temperature -30ºC~+60ºC, storage
temperature -40ºC~+70ºC. Altitude: The altitude of the installation
site does not exceed 2000 meters, and the altitude of more than
2000 meters should be derated for use. Atmospheric conditions: The
relative humidity of the air at the installation site does not
exceed 50% at +40°C, and the average humidity of the wettest month
does not exceed 90% at +20°C. Installation category: The
installation category is III and III. Pollution
degree: Level 2. Installation method: Use TH35-7.5 standard rail
installation. Installation conditions: The inclination between the
installation surface and the vertical surface should not exceed 5°,
and the installation site should be free of significant impact and
vibration. Wiring method: Use screw compression connection to
ensure fast and safe connection of conductors.The main technical
parametersRated curent In(A)Number of polesRated working
voltage(V)Limit segentation capacity Icu(kA)Operating breaking
capacity
Icu(kA)1A,2A,3A,6A,10A,16A,20A,25A,32A,40A,50A,63A1P250107.5300662P500107.5600663P750107.5900664P1000107.5120066
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