Beta Manual 19025(1)

GENERAL INFORMATIONDIST. AUTORIZADO®MEX (55) 53 63 23 31QRO (442) 1 95 72 60MTY (81) 83 54 10 18ventas@industrialmagza.comDescriptionRatiotrol Beta controllers statically convert single-phase AC line power to regulated DC foradjustable-speed armature control of shunt-wound and permanent-magnet motors. The controllersare Underwriters Laboratories Listed. (File No. 71E60208)EnclosureTotally enclosed, non-ventilated, constructed of rugged die-cast aluminum alloy. Gasketed,screw fixed cover excludes contaminants. Provision for conduit entry is included top and bottomby two (2) 3/4-14 NPT tapped holes. Standard unit is easily and inexpensively convertibleto NEMA Type 3, 4 or 12.Model TypesTable 1. Ratiotrol Beta Model MatrixFunction Configuration OperatorControlsModelUnidirectionalRun-StopArmature SwitchReversingArmature ContactorReversing and D.B.Open ChassisEnclosedLocal (Integral)Remote (*)Power SourceAndHorsepowerRange115VAC50/60 Hz230VAC50/60 HzRB1 X X XRB1B X X X 1/12 - 1HP N/ARB1S X X XRB1R X X XRB2 X X XRB2B X X XRB2S X X XReconnectableUnits115VAC50/60 Hz230VAC50/60 HzRB2R X X XRB3 X X X 1/12 - 1HP 1/2 - 2HPRB3B X X XRB3R X X X* Operator controls provided by user4 Doc. No. 19025 • Boston Gear ® Ratiotrol ® DC Motor Speed Control