|Classic continental European
catalog pages of uncommon plugs
catalogs of electro-technical companies and retailers, published in the
1920s to 1960s you will find a large variety of plugs with uncommon
combinations of pin types. Two catalog pages shown below give an
During the second half of the 20st century most uncommon plug types disappeared because of an increasing standardization, but a demand for plugs for special purposes still exists (see museum section on uncommon plugs and sockets). Quite a number of nowadays uncommon plugs have pin configurations were already introduced many decades ago.
1939-'40 catalog, part of page 248
Polzahl = number of poles; Stiftstellung = pin configuration.
Besides common plugs with 4 and 5 mm pins (resp. nos. 14352 and 14354), Stotz-Kontakt offered a range of plugs and sockets for special purposes. Among others no. 14219.
The pin configuration of plug no. 14219 matches perfectly to the socket shown on the previous page. However, in 1939 plug 14219 was presented as a 3-pole, not earthed plug rated at 380V* - 10A.
Socket is rated at 220-380V - 10A. Moreover, the bottom left pole has a clear earth symbol, which makes sense when it is used for single phase, 220 Volt.
* 380V 3-pole means three-phase (formerly R, S, T, now L1, L2, L3), without neutral and protective earth. Three-pin, three-phase requires a balanced load between R, S and T, not uncommon in older days.
About Stotz- Kontakt:
1891: establishment of Moyé und Stotz, Elektrische Installationen in Mannhein, Germany. From 1896 Stotz und Cie,
Elektrizitätgesellschaft, later renamed to Stotz und Cie GmbH, elektrischer Spezialapparate.
1918: Stotz became a subsidiary of the Swiss company Brown, Boveri & Cie (BBC).
1930: merging of Stotz (Mannhein) and Kontakt (Frankfurt am Main). In 1939 a fire destroyed the Mannhein plant, and
Stotz-Kontakt moved to Heidelberg.
1968: merging of Stotz-Kontakt and the Electro division of Busch-Jaeger; shortly thereafter renamed to Busch-Jaeger
Elektro GmbH in Lüdenscheid. From 1985 a part of ABB (Asea Brown Boveri).
|Plug pin configurations, redrawn from
catalog page 70
catalog of Austrian
not polarized, 2-pin plug with 4 mm pins (commonly used for 6A-250V plugs)
not polarized plug with 5 mm pins (used for higher amperage)
polarized 3-pin plug (comparable type, with different pin spacing, is still used in Australia for 110V, see AS/NZS page)
polarized 2-pin plug
polarized plug; probably HNA type (see previous page)
polarized, not earthed plug
polarized , earthed plug
polarized plug; could be comparable to Stotz-Kontakt 14219
4-pin plug, probably 380V 3-phase + N or protective earth.
Comparable model are still available in Poland (see 3-phase 32A socket and plug) and in Czech Republic (440V - 10A according to CSN 35 4517 = Czech norm for special plugs and sockets, see cz.abb schemes)
|D i g i t a l M u s e u m o f||P l u g s a n d S o c k e t s|