B-Line D80 Series ON Delay Pneumatic Timer

Yes. The D80 Series ON or OFF delay pneumatic timers convert in the field by rotating the solenoid assembly 180 degrees, so the D80NE1A can be set up as an OFF delay without ordering a different part. The timing function in use is marked on the mounting plate, which keeps the next person in the panel from guessing.

Adjustable from 0.5 to 180 seconds, so it covers everything from a half-second anti-chatter delay up to a three-minute sequencing delay on motor starting or fan purge. If your sequence needs longer than three minutes, this pneumatic head will not get you there.

It does. The coil is rated 110/120V at 50-60 Hz, which matches a typical 120V control transformer secondary in a motor control panel. It is not a 24V or 240V coil, so a low-voltage control scheme needs a different coil rating.

One normally open and one normally closed contact, both timed. That is enough to start one load on delay and drop another at the same moment. What it will not do is give you an instantaneous contact for a seal-in circuit: these timers will not accept instantaneous contacts, so if your control scheme needs an immediate holding contact you have to get it from the contactor or a separate relay.

Plan on 7.3 by 5.5 by 1.9 inches and 3.5 pounds. It is a heavier, deeper device than a plug-in solid state timing relay, so check your backpan depth and door clearance before laying out the subpanel.

An ON delay times after the coil is energized: the contacts change state only once the set delay has run, which is what you want for staggered motor starts or letting a pump build pressure before a downstream device picks up. An OFF delay times after the coil drops out, holding the contacts for the set period, which is what you use for fan run-on or cooldown. The D80NE1A ships as an ON delay and converts to OFF delay in the field by turning the solenoid assembly 180 degrees, so one part covers both sequences.

D80NE1A is the model to specify: a D80 Series pneumatic ON delay timer with a 110/120V, 50-60 Hz coil, one timed NO and one timed NC contact, and a 0.5 to 180 second adjustment range. No separate timing head or contact block is called out with it.

Yes, the coil is rated for 50-60 Hz at 110/120V, so it works on either frequency. On a pneumatic timer the delay is set by an air dashpot rather than the line frequency, so the 0.5 to 180 second range does not shift between 50 and 60 Hz service.