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Timers/Time Switches

Model Ratings Temperature Humidity Vibration EMC Enclosure
H3DT 24-240 V AC/DC
24-48 V AC/DC
100-120 V AC
200-240 V AC
Note 1: The above table lists series names. Ask your OMRON representative for details on specific model numbers.
Note 2: For type approvals, these models shall not be installed on the deck, in the bridge, or on machinery that has severe vibration conditions.
The following DNV (Det Norske Veritas) rules apply: Environmental Test Specific for Instrument and Automation Equipment Standard for Certification No. 2.4.
Refer to the following table for the location classes.
Table 2-1 Location classes-Selection guide
Column I Column II
Parameters Location within main area MAIN AREAS ON BOARD
Machinery spaces Control room, Accommodation Bridge Pump room, Holds, Rooms with no heating Open Deck
Temperature Inside cubicles, desks, etc. with temperature rise of 5°C or more B B B D D
All other locations A A A C D
Humidity Locations where special precautions are taken to avoid condensation A A A A A
All other locations B B B B B
Vibration On machinery such as internal combustion engines, compressors, pumps, including piping on such machinery B --- --- B B
Masts --- --- --- --- C
All other locations A A A A A
EMC Electromagnetic compatibility All locations within specified main areas A A B A B
Enclosure Submerged application D --- --- D D
Below floor plates in engine room C --- --- --- ---
All other locations B A A B C