Features
• Detection balls and detection rods are completely
enclosed and thus the products are not affected by
pressure, vacuum, or gases
• The lead switch is enclosed in a glass tube containing
inert gas and thus the products operate safely in
combustible gases
• When the detection ball moves up and down due to
buoyancy, the lead switches fixed to the upper/lower
limit contact point positions are sensed.
• Can be used for simultaneous control of water supply/
drainage or alarms for water shortage/full water by
additionally installing electrode type level switches
(21F-G)
• In particular, types with the control unit not built in
the products can be used in regions with the risk of
explosion or cases where the location of detection
is far away from the location of control by installing
the power supply part and the amplification part
separately
• Depending on connections, either N.C or N.O can be
used or both can be used.
Specifications (built-in type)
Item JRS-S JRS-D
Power supply/voltage AC110V, AC220V/50/60Hz
Voltage fluctuation range ±10%
Power consumption 2VA
Contact point capacity AC250V 3A
Internal pressure 7kgf/cm2
Insulation resistance At least 100 Ω DC 500V MEGA
Life Electric: at least 500,000 times / Mechanical: at least 5,000,000 times
Workable temperature range 0-80°C (Non Condencing)
