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SPECIFICATIONS
Operating
0°C to 80°C ( 32°F to 176°F )
Conditions:
0 % to 95 % R.H. non-condensing
See power derating curves document
Thermostatic
Self resetting. Auto shut off when SCR
protection:
ambient temp. is above 82°C ( 180°F )
Power supply:
24 Vac -15%, +10% 50/60 Hz; 2 VA
Use a Class 1 ( properly fused ) or
Class 2, CSA or UL recognized
transformer.
Note:
These instruments have undergone rigorous tests and verifications prior to shipment to ensure proper and reliable operation in the
field. However, like other such products, they are subject to failure. It is therefore the responsibility of the installer / user / electrical
panel designer to incorporate safety features and devices ( such as relays, flow switch, thermal protections, etc..... ) to protect the
entire system from catastrophic failure.
R820 DIMENSIONS & INSTALLATION
•
Mounting instructions & templates are available from the factory.
•
The cutout templates include holes position for heatsink attachment to the electrical cabinet
R810 & single phase R820 will have 2 mounting screw, 1 on each side.
Three phase R820 will have 4 mounting screw, 2 on each side.
•
Respect mounting orientation ( this side up ).
•
Mount the heatsink vertically on the side of the cabinet for proper heat dissipation.
•
If mounted on top or bottom of the cabinet, derate maximum usable amperage by 25%.
•
Do not relocate the power switching modules on the heatsink.
"A " T e m p late
Typical template:
1.1 25"
B
B
5 .25"
C
3.0 0"
D
C u tout h ole
C
H e atsink con tour
HIGH VOLTAGE WIRING
General cautions:
•
High voltages are present on the terminals of these
devices. Please read all the instruction in this manual carefully.
•
The 45 & 75 Amps models need to be wired with the supplied
high voltage lugs. Attach the wire to the lug first, then screw
the lug to the power module.
•
Have the wiring done by a qualified a skilled professional.
•
High voltage and amperage can be fatal.
•
All wiring must conform with national electrical code
regulations.
•
The instrument must be wired before applying power.
•
Protect circuits with semi conductor fuses.
•
For in panel installation, derating amperage curves are
available from the factory.
1.1 25"
D ia= 0.19 "
A
Typical installation:
2
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