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Holding magnet THM 433
Holding magnet THM 433 - 1
Holding magnet THM 433 - 2

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Holding magnet THM 433

For closing sequence control and hold-open devices, with concealed connection clamps

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  • The THM 433 has a spark suppression diode (free-wheeling diode) to protect switching elements against premature burnup or overvoltage peaks and a reverse polarity protection diode
Notice

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 which switches off the retention voltage in the event of a fire to close the door and prevent the spread of fire and smoke.