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| MR
300 Series Relays provide virtually endless options
for low-voltage application interconnectability. This robust
relay is available in SPDT or DPDT configurations. Available
in enclosure, snap-track, or spacer mounted versions and single
or multi-unit assemblies. Enclosure configurations available
with red or gray covers and provide ‘energized on’
LED viewing port(s). No special tools are required for installation.
Industrial/commercial sized PCB. Code required approvals in
place. |
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A sampling of mounting, enclosures, and
configurations shown above.
User-Selectable Operation Modes:
• Super-low current dedicated 24VDC trip mode allows for a
variety of fire alarm driver type applications.
•
TTL level trip is "real world" useable for building
control/
relay/annunciator driver board applications.
• Trip / host "bridged"
mode provides a 12-27.3VDC standard
package for security
and general purpose solutions.
Options/Configurations:
• Available in SPDT or DPDT configurations
• Available in enclosure,
snap-track, or spacer mounted versions
• Available in single or multi-unit assemblies
• Track mount version
allows for either adhesive, DIN rail or single/dual screw mounting
• Spacer configuration
provides for screw or optional DIN/"A" rail mounting
• Enclosure configurations available with red or gray
covers
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| The
MR3 utilizes all pre-qualified, reliable hi-grade U.L. recognized
components. Trip circuitry is 100% opto-isolated for complete
non-interference and protection. Easy reversible selectability
for trip/host voltages, low and ultra-low current trip operation
which allows proper matching of trip to type of load switched
(no tools necessary). Both trip and host inputs are diode protected
against accidental reversed polarity DC hook-up. These relays
are polarized so that either or both may be supervised and/or
utilize input voltage logic for complex multi-criteria operations.
Both trip and host are universal for use with standard TTL,
fire, security and building control voltages. All field wiring
terminations are done with positive clamping-action captive
screw commercial/industrial terminals (#12 to #22 AWG).The design
provides for positive or negative trigger inputs, and an integral
energized (on) red LED indicator.There is also zener diode protection
across relay coil. Environmental temperature ratings are between
32°F to 120°F @ 93% RH non-condensing / freezing.The
unit provides for use of two differently referenced power sources
on trip and host inputs.The MR3 will not false trip on less
than four volts and allows regulated and un-regulated power
sources. |
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