B31816

Technical Characteristics

• Duty Type

  continuous

• Winding Quantity

  3

• Thread Class

  2b single mounting facility

• Thread Series Designator

  unc single mounting facility

• Winding Dc Resistance Rating

  3.6 kilohms nominal second winding

• Main Contact Maximum Voltage Rating In Volts

  28.0 dc

• Operating Voltage Rating And Type At Specified Temp

  28.0 volts teardrop, two holes type 4f all windings

• Overall Width

  1.570 inches maximum

• Winding Dc Resistance Rating

  260.0 ohms nominal third winding

• Overall Length

  1.570 inches maximum

• Main Contact Load Current Rating At Maximum Rated Voltage

  3.0 amperes dc resistive load

• Time Delay

  0.03 seconds maximum fixed operate time

• Special Features

  a. no. 1 coil controls no. 2 coil capacitor delay. thus delaying contact transfer by no. 3 coil on drop-out.

• Center To Center Distance Between Mounting Facilities Parallel To Width

  1.062 inches nominal single mounting facility

• Time Delay

  0.60 seconds nominal fixed release time

• Mounting Facility Type And Quantity

  4 threaded hole single mounting facility

• Center To Center Distance Between Mounting Facilities Parallel To Length

  1.062 inches nominal single mounting facility

• Winding Dc Resistance Rating

  36.0 ohms nominal first winding

• Features Provided

  polarized

• Terminal Type And Quantity

  11 wire hook all functions

• Coil Quantity

  3

• Thread Quantity Per Inch

  40 single mounting facility

• Environmental Protection

  hermetic

• Nominal Thread Size

  0.112 inches single mounting facility

• Nonpile-Up Main Contact Arrangement

  2 pole, double throw, one position momentary

• Overall Height

  2.620 inches nominal

• Mounting Facility Pattern

  rectangular single mounting facility