Eaton A210 Instruction Leaflet

Also see for A210: Instruction leaflet

2 EATON CORPORATION www.eaton.comInstruction Leaflet IL16963Effective May 2011A210, A250Size 00, 0 or 1Reversing Motor ControllerTYPE B OVERLOAD RELAY (See Figure 1)This A210 or A250 motor controller is usually equipped with aType B block type ambient compensated overload relay (with grayreset rod). The controller can also be supplied with a non-ambientcompensated overload relay (with red reset rod). The relay is ofthe bimetal actuated type equipped with a normally-closed controlcontact. An optional isolated normally-open control circuit contact isavailable for field mounting. When the overload relay trips, a yellowdot will appear flush with the molded surface below the reset rod.Resetting the relay returns this indicator to its normal concealedposition.TYPE A OVERLOAD RELAY (See Figure 4)The A210 or A250 motor controller can be equipped with a Type Ablock type non-ambient compensated overload relay (unmarked andwith red reset rod) or with a block type temperature compensatedoverload relay (marked “ambient compensated” and with gray resetrod). The relay is of the bimetal actuated type equipped with tripindicator, trip adjustment covering ± 15% of rating and a normally-closed control contact. It may be operated with either hand orautomatic reset.Reset operation is determined by the positionof the plate on the loadside of the overload base. Position the reset plate away from thepanel to set the “hand” position. Loosen the locking screw, movethe reset plate toward the panel, and retighten the screw to set the“auto” position.Automatic reset should not be used with 2-wire control circuitswhere automatic starting of the motor may be hazardous.Figure 2. A210 Dimension Drawing (Dim. in inches)Figure 3. A250 Dimension Drawing (Dim. in inches)Figure 4. Type A Block Overload Relay (OLR)