Brief introduction:
Main Distribution Frame (MDF) is the device that terminates external communication cables with exchange or access equipments in the telecommunication system. HPX67 MDF, a double-sided frame, consists of line side (vertical side), exchange side (horizontal side), alarming system, the mounting frame itself and all the necessary accessories, with optional stepladders. The line side can be equipped with FT203 Protection Terminal Blocks (PTB, 100L), with FA906 Protectors inserting into the block to protect the exchange. The exchange side can be equipped with FT206 Test Terminal Blocks (TTB, 128L). Test for internal line and external line could be done separately without disturbing each other.

Features:
Complete I.D.C. type MDF.
Sound and reliable protection against over voltage and over current.
Unique Fail-Safe (FS) protection and self-recovery protector.  
Modular design, easy installation, quick wiring, convenient maintenance.
The application of PC material greatly improving module's strength and anti-aging capability.
Up to four grades of audio/visual alarms provided.

General specifications:

Besides, Due to its modular design, capacity can be tailored at the customers’ requirements.
 
Technical specifications:                                                                                         
Insulation Resistance ≥1000 MΩ.
Dielectric Strength≥1000V(AC voltage,50 Hz for 1 minute), no spark-over and no flying arc
Contact resistance between conductor and reed: ≤1mΩ
Contact resistance between reeds: ≤3mΩ
Conductor diameter range: 0.4m-0.8mm
Pulling strength:≥50N