Manual drive for connector without earthing, line mounting, rotary motion NRA E-12 w.II 03-505

Manual drive for connectors – reliable switching mechanism

This manual drive, model NRA E-12 w.II, is a key element in operating connectors without an earthing conductor, especially in configurations mounted below the line. Its design and operation are intended for efficient and safe circuit switching, both for professional installers and end users. The device is dedicated to suspending pull-off and through-type brackets for self-supporting insulated conductors on spun poles, which do not have holes. It works particularly well when implementing many branches from a single pole.

Functionality and practical application

The NRA E-12 w.II drive enables manual control of the connector, which is particularly important in places where access to power for electric drives is limited or impossible. Mounting below the line provides convenience and safety during operation. Thanks to its design, this drive allows simultaneous closing and opening of all poles of the connector, simplifying the switching process and minimizing the risk of errors. The drive mechanism is coupled to the connector using two M10 screws, ensuring a stable and secure connection.

Design and compatibility

The NRA E-12 w.II manual drive is designed to work with ALPAR ON, OUN, ONp, OUNp, ONMp and OUNMp III SA 24/4 frame and modular disconnectors. Made of durable materials, it ensures long-lasting and reliable operation even in harsh weather conditions. The use of a bearing movable beam guarantees smooth operation and minimizes resistance during switching. Additionally, this drive can be used with NEA and NRMA(u) type motor drives, offering flexibility in control system selection. Current clamps allow connection of a link or power cable with a cross-section of up to 95 mm², and optionally even up to 120 mm².