General Model JPX-377 main distributing frame is used as a necessary part of large capacity program controlled switchgear and it is used for internal and external connection, jumper and test as well as protection of equipment within exchange and personal safety. Features: 1、 Plastic Parts: self-extinguishing in compliance with FV-0 under GB 4609 national standard 2、 Contact Resistance: Winding resistance is less than 7 mΩ 3、Applicable conductor: Core wire diameter is 0.4 – 0.7 mm 4、Other technical parameters are in compliance with industry standard
Size (return wire)
The dimension of this unit is as same as Model AP-15 unit connection but PTC heat sensitive resistance is used as the over-current element. Big gas discharge tube is used as over-voltage element to avoid any trouble caused by small size discharge tube.