178A

Technical Characteristics

• Thread Class

  2b single reed

• Overall Height

  2.750 inches nominal

• Overall Width

  1.930 inches nominal

• Winding Quantity

  1

• Coil Quantity

  1

• Winding Dc Resistance Rating

  350.0 ohms nominal single winding

• Duty Type

  continuous

• Overall Length

  2.370 inches nominal

• Center To Center Distance Between Mounting Facilities Parallel To Length

  1.812 inches nominal single mounting facility

• Frequency In Hertz

  60.0 nominal

• Mounting Facility Pattern

  two position in-line single mounting facility

• Nominal Operating Current Rating And Type

  20.0 milliamperes ac single winding

• Operating Voltage Rating And Type At Specified Temp

  115.0 volts ac 25 deg celsius single winding

• Main Contact Maximum Voltage Rating In Volts

  115.0 ac

• Thread Series Designator

  unc single mounting facility

• Terminal Type And Quantity

  4 pin all functions

• Mounting Facility Type And Quantity

  2 threaded hole single mounting facility

• Nominal Thread Size

  0.138 inches single mounting facility

• Nonpile-Up Main Contact Arrangement

  1 pole, single throw, normally open, momentary action

• Main Contact Load Current Rating At Maximum Rated Voltage

  10.0 amperes ac resistive load