Page 201 - Electromechanical Devices and Components Illustrated Sourcebook

Chapter 9 Connectors 163

ratings. These connectors are designed for use on the internals
of machines or appliances that are not subjected to harsh envi-
ronmental conditions. The connector is supplied with the pins
separate. The wires are connected either with a crimp or sol- Plug
der joint and snap inserted into the body. A special tool is
required to remove the pins. Figure 9-51 shows an example of
an eight-pin modular connector.
Socket

Cable
8 Pin 11 Pin
Recessed Pins
Instrument
Cabinet
Figure 9-53 8- and 11-Pin Octal Connectors
Molded
Plastic Housings

Locking Tab
Cable AC Connectors
Figure 9-51 Modular Connector
Most of us are familiar with the standard 120-VAC connector.
We are aware that there are two-prong versions and three-
prong versions, with the third prong providing a ground. Most
Jones connectors are one of the age old standards in mul- modern 120-VAC equipment is supplied with a three-prong
tipin connectors. They have been used in all manner of equip- plug unless the appliance is double insulated. Figure 9-54
ment and are still commonly found, however, modern shows a few standard 120-VAC connectors. The wall recepta-
designs have principally replaced these connectors. The cle is the same unit that you would find in your bedroom. The
design is based around a bake-a-lite base with flat “spade” panel unit is intended for equipment applications.
style pins. A metal housing is affixed to the base via two
small screws or rivets. The housing also carries a cable clamp
and strain relief. Figure 9-52 shows a typical example of a
six-pin Jones connector.

Metal Housing Cable Clamp
Housing Screw
Panel
Wall
Female

Male
Figure 9-52 Jones Connector

Another vintage standard is octal connectors. These con-
nectors were primarily used for tube sockets in the 40s, 50s, Cable
and 60s. Unlike the Jones plug, the octal plug has become one
Figure 9-54 Standard 120-VAC Connectors
of the standard sockets for modern control relays. These
connectors are available in 8- or 11-pin versions. They are par-
ticularly durable connectors and are easy to plug and unplug.
Another useful item that the market offers are small cabinets Figure 9-55 shows the standard 240-VAC connector. These
with integral octal connectors. These allow small subassemblies plugs are less known because 240 volts is not common for
to be constructed and simply plugged into a standard relay small appliances. The most common use for these receptacles
socket. Figure 9-53 shows both an 8-pin and 11-pin octal con- is to provide power for window-mounted air-conditioning
nector set. Also shown is an octal cabinet assembly. units.