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THM 425 holding magnet
Magnetic door holding magnet in round design with concealed connection clamps
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Variants
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- The THM 425 has a spark suppression diode (free-wheeling diode) to protect switching elements against premature burnup or overvoltage peaks
- With inverse polarity protection and surge suppression diodes
Door holding magnets are used as locking devices to hold open movable room partitions such as fire protection doors, smoke protection doors and other partitions. They must be linked to a smoke detection system that switches off the retention voltage in the event of a fire to close the door and prevent the spread of fire and smoke.
Dimensions subject to change. Subject to technical changes!
Select RAL-colour code
!! NOTE: On-screen visualisation of the colour differs from real colour shade!!
