Hekatron THM 439/335 6500128 Door Holder Magnet – 490N/63mA

Hekatron THM 439/335 6500129 Door Holder Magnet – 490N/63mA

Tags: ,

Login to see available stock and prices

Request Quotation


The Hekatron THM 439/335 is an Electromagnetic Door Retainer for wall, floor or ceiling mounting. The THM 439/335 is used to keep self-closing doorways, such as fire doors, smoke doors and other doors or gates open. The THM 439/335 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 head of the THM 439/335 can be turned and tilted, making it possible to arrange the pole face parallel to the mounting surface or at right angles to it. The length of the THM 439/335 can be adjusted to suit local conditions by shortening its tubular support.

The THM 439/335 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.

Additional information

Weight1 kg


There are no reviews yet.

Be the first to review “Hekatron THM 439/335 6500128 Door Holder Magnet – 490N/63mA”

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.