Agastat7012AFElectropneumatic On-Delay Timing Relay, 1-10 Minute Adjustable, 125 V DC Coil, DPDT (2 Form C) 10 A at 240 V AC, Panel Mount

Product Description

The specification that matters most: the coil is 125 V DC:
The nameplate on this unit reads MODEL 7012PF, COIL 125VDC, TIME 1-10 MIN., SERIAL 8C172567. That is worth stating plainly, because distributor listings for the 7012 family routinely put “240 VAC” in the title – that figure is the contact rating, not the coil voltage. Energise a 125 V DC coil from a 120 V AC control circuit and it will buzz, run hot and fail. Check your control voltage before ordering. The 7012 series was built in many coil voltages; this one is the DC unit.

How an Agastat actually times

The 7000 series is electropneumatic, not electronic and not a motor timer. Energising the coil pulls a diaphragm against a calibrated air orifice; the air bleeds through at a controlled rate and the contacts transfer when the diaphragm completes its travel. Turning the knob changes the orifice. The consequences are worth understanding:

It is genuinely immune to electrical noise. There is no microprocessor to upset, which is why these are still specified in switchgear, utility substations, generator control and traction applications decades after solid-state timers became cheap.The timing is repeatable but temperature- and altitude-sensitive in a way an electronic timer is not, because air viscosity changes. Agastat rates the unit -20 F to +165 F (-29 C to +74 C).There is nothing to program. The setting is visible on the knob at a glance from across a panel – the 7000-series knobs are oversize, serrated and time-calibrated with high-resolution markings deliberately so that an operator can read the setting without a manual.

On-delay, and how to tell

The base of this relay is marked T.D. ON PICK UP – time delay on pick-up, i.e. on-delay (delay on energisation). Apply the coil, wait out the set interval, contacts transfer; drop the coil and they reset immediately. Agastat quotes a release time of 50 ms for the on-delay 7012/7014 models. If you need the opposite behaviour – contacts transferring immediately and delaying on de-energisation – that is an off-delay model, a different part number, and this will not do it.

Published ratings

Timing range: 1 to 10 minutes, knob adjustable, scale marked in MINUTESCoil: 125 V DC (nameplate)Contacts: 2 Form C / DPDT / 2 changeover, rated 10 A at 240 V ACRelease time: 50 ms (on-delay 7012/7014 models)Operating temperature: -20 F to +165 F (-29 C to +74 C)Panel mount, quick-connect and screw terminals; terminals marked L1 and L2 for the coil7000 series overall spans 0.1 second to 60 minutes in linear increments

Where it earns its keep

Long-interval on-delay is the classic use: holding a generator or compressor off-line until pressure or speed stabilises, purging a furnace or oven before ignition, alternating duty and standby pumps, sequencing large motor starts so they do not all inrush together, and interlock delays where a several-minute wait must survive a noisy environment without drifting.

Brand trail and interchange

Agastat passed to Amerace, then Tyco Electronics, and is now part of TE Connectivity, sold through its Aerospace, Defense and Marine business. The same relay is catalogued under Agastat, Tyco and TE Connectivity, and the current TE part number carried against the 7012PF is 2-1423159-9. Adjacent numbers in the same body are the 7012PH (3 to 30 minute range) and the 7014 series (the other on-delay contact arrangement); off-delay equivalents sit in the 7022/7024 numbers. Interchange within the 7000 series is by coil voltage, timing range and contact arrangement together – all three have to match, because the body is shared across dozens of variants.

Condition and quantity

One relay with its original Agastat 7012PF carton, as photographed. Seller refurbished new-old-stock; no socket, mounting hardware or documentation included.