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Hearter selection guide Technical Data Heater Element Speci ?cations Bulletin Number Topic Page Description Heater Element Selection Procedure Index to Heater Element Selection Tables Heater Element Selection Tables Additional Resources These documents co

Technical Data Heater Element Speci ?cations Bulletin Number Topic Page Description Heater Element Selection Procedure Index to Heater Element Selection Tables Heater Element Selection Tables Additional Resources These documents contain additional information concerning related products from Rockwell Automation Resource Industrial Automation Wiring and Grounding Guidelines publication - Product Certi ?cations website http www ab com Description Provides general guidelines for installing a Rockwell Automation industrial system Provides declarations of conformity certi ?cates and other certi ?cation details You can view or download publications at http www rockwellautomation com literature To order paper copies of technical documentation contact your local Allen-Bradley distributor or Rockwell Automation sales representative CFor Application on Bulletin Line Starters Heater Element Speci ?cations Type W Heater Elements Eutectic Alloy Overload Relay Heater Elements Type J ?? CLASS Type P ?? CLASS Bul ONLY Type W ?? CLASS Type WL ?? CLASS Note Heater Element Type W WL does not currently meet the material restrictions related to EU ROHS Description Overload Relay Class Designation United States Industry Standards NEMA ICS Part designate an overload relay by a class number indicating the maximum time in seconds at which it will trip when carrying a current equal to percent of its current rating A Class overload relay will trip in seconds or less at a current equal to percent of its rating A Class overload relay will trip in seconds or less at a current equal to percent of its rating A Class overload relay will trip in seconds or less at a current equal to percent of its rating Allen-Bradley standard overload relay protection is provided using Type W heater elements for the Line This provides Class operation and is recommended for General Applications Speci ?c Applications may require Class or Class overload relays Class overload relays are often used with hermetic motors submersible pumps or motors with short locked rotor time capability Class overload relays should be used with motors driving high inertia loads where additional accelerating time is needed and the safe permissible locked rotor time of the motor is within Class performance requirements For applications requiring Class protection Type WL heater elements are available To order use the applicable Type W selection table follow the heater element selection instructions and change the ?? W ? in the Heater Type Number to ?? WL ? For applications requiring Class overload relays Type J elements are available See page - for Index to Heater Element Selection Tables Heater Element Selection The ??Full Load Amperes ? listed in the tables are to be used for heater element selection For Type J and W Heater Elements the rating of the relay in amperes at C F is of the ??Full Load Amperes ? listed for the ??Heater Type Number ? For Type WL Heater Elements the rating is of the ??Full Load Amperes ? listed for the ??Heater Type Number ? Refer to the motor nameplate for the full load current the service factor and or the motor classi ?cation