intermediate trunk distributing frame
intermediate trunk distributing frame
[‚in·tər′mēd·ē·ət ′trəŋk di′strib·yəd·iŋ ‚frām] (electricity)
A frame which mounts terminal blocks for connecting linefinders and first selectors.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.