The MA431 alarms device (for SC 688 – SC 689), realized on printed circuit, notices the absence of the power supply tensions B1 and B2 in entry of the sub-rack and coming from the exchange battery.

It is installed in the rack and connected mechanically to the structure using 2 clips and bi-adhesive strip.

The installation of the device happens without interruption of the service.

The MA431 alarms device TELECO has the following interfaces:

– Power supply input: B1 and B2.

– Alarms input from sub-rack: C1.

– Alarms output toward sub-rack: C2.

– Alarms output AND and OR battery: M1 and M2.

– Optic indicators: L1 and L2.

The dimensions of the MA431 are:

– Width: 63 mm.

– Max depth: 113 mm.

– Height: 20 mm.

– Fixing: On sub-rack with 2 clips and bi-adhesive strip.