MC346

MC346 – Installation Manual

MC 346 Instruction Manual 4-MC346-01 © 2021 Alarmtech Rev. MC346_2150en Page 1 of 2 Detectors Magnetic Contact Recessed mounting Instruction Manual MC 346

DESCRIPTION

MC 346 is a versatile magnetic contact used in both alarm and security access control systems for protection of doors, gates and windows against unauthorized opening. A wide range of accessories enables the contact to be recessed - or surface-mounted on a variety of surfaces, including ferromagnetic materials.

MOUNTING INSTRUCTIONS

 Contact and magnet should be installed axially, corresponding to each other.  Catch-bolts on the housing enable direct installation in ф 8 mm holes in wood.  Appropriate accessory must be used for installation in ferromagnetic environment.

CIRCUIT DIAGRAM

OPERATING PRINCIPLE

MC 346 magnetic contact has two parts: the contact part with a reed switch and the magnet part. In its neutral position the reed switch remains closed under the forc e of the magnetic field. Opening the monitored object increases the distance between the reed switch and the magnet. This causes a change in position of the reed switch and as a result – a path of the signal. Magnetic contacts should not be installed in the vicinity of strong magnetic fields.

TECHNICAL DATA

Working environment Wood Steel Make distance typ. 15 mm ± 40% Not recommended Break distance typ. 17 mm ± 40% Not recommended Contact type form C, SPDT Switching voltage max. 48 V DC/AC Switching current max. 250 mA DC / 180mA AC Contact rating max. 5 W Cable ф 3,6 mm, 5x0,182 mm2 Environmental class (EN50130-5:2011) IIIA Operating temperature range -40°C to +70°C Operating humidity range max. 95% r. h. Housing material plastic ABS Dimensions: Contact part ф 9 x 36 mm Magnet part ф 9 x 25,5 mm Security grade (EN50131-2-6:2008) 2 Approvals VdS EN-ST-000097, SBSC 9-203, FG MKT-1010/09,

INCERT B-582-1002

MC 346 Instruction Manual 4-MC346-01 © 2021 Alarmtech Rev. MC346_2150en Page 2 of 2

INSTALLATION

Contact and magnet should be aligned axially in the frames and leaves of the monitored objects (windows, doors etc.). Offset will reduce the working distances. The contact should be mounted in the stationary part of the monitored object (ex. door frame) and the magnet in the movab le part (ex. door leaf). Before mounting, holes must be drilled. Catch- bolts on the housing enable direct installation in ф 8 mm holes in wood. For sites where it is impossible to mount the contact directly, a variety of accessories is available. Accessories with a strong magnet provide a bigger working distance for more demanding applications and maintain the parameters of the magnetic contact when mounted in ferromagnetic environment. Accessories for surface mounted applications provide

installation solu tions for sites where recessed mounting is

not suitable. The working distances of the magnetic contact will be decreased in the proximity of ferromagnetic surfaces. The closer the contact/magnet is installed to the ferromagnetic surface, the lower the working distances Only non-ferromagnetic screws may be used when mounting the contact using accessories. After the installation, use an ohmmeter to check the electrical connections and test the function of the magnetic contact. Please note: Applying excessive force to the housing of the contact may damage the glass body of the reed switches inside. Applying excessive force to the magnet can have a negative impact on the magnetic field.