388B

Technical Characteristics

• Mounting Method

  threaded stud single group

• Nominal Thread Size

  0.138 inches single group

• Winding Operating Current

  670.0 milliamperes ac maximum single component single secondary

• Reliability Indicator

  not established

• Center To Center Distance Between Mounting Facilities Parallel To Length

  3.000 inches nominal single mounting facility single center group

• Center To Center Distance Between Mounting Facilities Parallel To Width

  3.438 inches nominal single mounting facility single center group

• Input-Output Phase Relationship

  single phase to single phase single component

• Winding Shielding Method

  internal shield grounded to inclosure single component

• Body Length

  4.688 inches nominal

• Body Height

  5.656 inches nominal

• Mounting Facility Quantity

  4 single group

• Winding Function And Quantity

  2 primary single component and 1 secondary

• Thread Quantity Per Inch

  32 single group

• Winding Tap Location

  center tap single component single secondary

• Winding Operating Voltage

  115.00 ac volts nominal single component all primary

• Winding Operating Voltage

  430.00 ac volts nominal single component single secondary

• Thread Series Designator

  unc single group

• Terminal Type And Quantity

  7 tab, solder lug

• Thread Class

  2a single group

• Thread Direction

  right-hand single group

• Frequency Rating

  50.0 hertz nominal single component or 60.0 hertz nominal

• Body Width

  4.094 inches nominal

• Inclosure Type

  fully inclosed