Conta-Clip have a range of Lamp Test Modules designed with blocking diodes to prevent back feeds when using multiple control circuits.
These compact modules can be mounted quickly on the DIN Rail and available for low voltage or high voltage applications
The LPM-K modules feature diodes which are connected in pairs on the cathode side. They are freely switchable at the anode. i.e., Individually switched by separate input, normally used for grouping lamps
The LPM-A modules feature diodes which are connected in pairs on the Cathode side. One anode from the connected pair is connected to a common collection point with the other Anodes. i.e., A single switch can active all the lamps connected to the module - more common configuration
LPM LPM-A
*The .../AD modules must be used when the operating voltage exceeds 30 V AC/60 V DC. The AD modules are the same spec, just have protective covers.
Designs with other diode types are available upon request.