Hekatron THM444 6500133 Door Holder Magnet - 1800N/330mA

The Hekatron THM 444 is a Wall Mounted Electromagnetic Door Retainer. The THM 444 is used to keep self-closing doorways, such as fire doors, smoke doors and other doors or gates open. The THM-444 must be connected to a smoke detection system, which will break the circuit to de-energize the electromagnet, if a fire occurs. This will allow the door to close, and stop the fire from spreading.

The THM444 is designed for use in extremely rugged environments. It has its own heating system, a hood for weather protection and a hermetically sealed terminal box with a PG cable gland. Both the pole face and the mating counterplates have an electroplated nickel finish. This makes the THM444 suitable for outdoor applications and in Zone 2 Hazardous Areas.

Hekatron THM446 6500146 Door Holder Magnet - 700N/63mA

The THM 444 is provided with a spark-suppression diode (free-wheeling diode) to protect the contacts against premature erosion and voltage surges, plus a reverse polarity protection diode.

Please contact us for more information.

The Hekatron THM 444 is used with:
AFV 75
ATV 75