The Contactor No. 153C was first issued with the No. 153 Block Signal in 1940. Carried over into the Post War period, it was issued with many accessories that had used the No. 41 Contactor during the Pre-War period like the No. 45N Automatic Gateman and the No. 152 Crossing Gate. This contactor was available throughout the entire Post War Era with the exception of one year: 1967.It is a single-pole double-throw (SPDT) switch that is placed beneath the track, and when adjusted properly to the weight of the train, will cause current to discontinue contact with one set of points and initiate contact with another. The No. 153C could work with any accessory that used the No. 145C Contactor, but the No. 145C would not work properly with any accessory that required the No. 153C like the No. 450 Signal Bridge. As with the No. 145C, there were many different instructions sheets that were issued. Here’s a listing, in chronological order, of these sheets and the dates that they were issued: YEAR ISSUED SHEET NO. DATE ISSUED NOTATIONS 1 1946 153C-18 * 3-46 "and service department" eliminated for Chicago Show Room 2 1946 153C-18 11-46 Chicago Show Room completely eliminated 3 1947-50 153C-22 8-47, 3-48, 7-48, 4-49, 6-49, 10-49, 2-50 4 1951 153C-23 1-51 5 1952 153C-22 # 5-52 # Out of sequence issue. 6 1953 153C-23 8-53 7 1954-55 153C-23 2-54, 4-55 Printed in both BLACK and BLUE ink 8 1955-60 153C-23 4-55 through 3-60 * Front page shown below and the early Post War accessories that used this contact. When the No. 153C-23 sheet was discontinued Lionel would use parts of this sheet to illustrate how to wire the No. 452 Gantry Signal (Sheet No. 452-13 dated 4-61) in addition to the No. 163 and No. 353 Block Signals.This contactor was first shown in the 1954 catalog and is listed as a "replacement part," but it was certainly available two years earlier in a classic box with an OPS label (shown above) as a separate sale item. There are no variations. This could make a great addition to your collection railroad layout or gift for a friend
