B-312W

Technical Characteristics

• Main Contact Maximum Voltage Rating In Volts

  440.0 ac

• Operating Voltage Rating And Type At Specified Temp

  28.0 volts teardrop, two holes type 4f single winding

• Overall Length

  3.660 inches maximum

• Center To Center Distance Between Mounting Facilities Parallel To Width

  3.100 inches nominal single mounting facility

• Unthreaded Mounting Hole Diameter

  0.201 inches nominal single mounting facility

• Mounting Facility Type And Quantity

  4 unthreaded hole single mounting facility

• Mounting Facility Pattern

  rectangular single mounting facility

• Auxiliary Contact Maximum Voltage Rating In Volts

  230.0 ac and 28.0 dc

• Winding Quantity

  1

• Overall Height

  4.440 inches maximum

• Environmental Protection

  shock resistant and vibration resistant

• Nonpile-Up Auxiliary Contact Arrangement

  1 pole, single throw, normally open, double make, momentary action and 1 pole, single throw, normally closed, double break, momentary action

• Winding Dc Resistance Rating

  12.0 ohms nominal single winding

• Auxiliary Contact Load Current Rating At Maximum Rated Voltage

  25.0 amperes ac resistive load and 25.0 amperes dc resistive load

• Terminal Type And Quantity

  12 threaded stud all functions

• Time Delay

  0.03 seconds maximum fixed operate time

• Main Contact Load Current Rating At Maximum Rated Voltage

  120.0 amperes ac resistive load

• Main Contact Load Current Rating At Maximum Rated Voltage

  120.0 amperes dc motor load

• Coil Quantity

  1

• Overall Width

  3.660 inches maximum

• Center To Center Distance Between Mounting Facilities Parallel To Length

  3.100 inches nominal single mounting facility

• Time Delay

  0.05 seconds maximum fixed release time

• Duty Type

  continuous

• Nonpile-Up Main Contact Arrangement

  3 pole, single throw, normally open, double make, momentary action