BK998A

Technical Characteristics

• Center To Center Distance Between Mounting Facilities Parallel To The Altitude Of An Isosceles Triangle

  4.500 inches nominal single mounting facility

• Nonpile-Up Main Contact Arrangement

  1 pole, single throw, normally closed, momentary action

• Duty Type

  continuous

• Main Contact Maximum Voltage Rating In Volts

  220.0 ac and 220.0 dc

• Terminal Type And Quantity

  4 pin all functions

• Operating Voltage Rating And Type At Specified Temp

  110.0 volts -80 deg fahrenheit type 4f single winding

• Coil Quantity

  1

• Nominal Operating Current Rating And Type

  0.07 amperes ac single winding

• Overall Height

  3.938 inches nominal

• Arc Quenching Method

  inert gas

• Mounting Facility Pattern

  triangle single mounting facility

• Overall Width

  2.625 inches nominal

• Unthreaded Mounting Hole Diameter

  0.171 inches nominal single mounting facility

• Main Contact Load Current Rating At Maximum Rated Voltage

  5.0 amperes ac resistive load and 500.0 milliamperes dc resistive load

• Winding Quantity

  1

• Winding Dc Resistance Rating

  375.0 ohms nominal single winding

• Environmental Protection

  hermetic

• Overall Length

  6.312 inches nominal

• Time Delay

  1.50 seconds minimum adjustable release time and 2.50 seconds maximum adjustable release time

• Frequency In Hertz

  60.0 nominal

• Mounting Facility Type And Quantity

  3 unthreaded hole single mounting facility

• Special Features

  mercury to mercury contacts