APR-S
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Reverse Protection Relay APR-S CSM_APR-S_DS_E_3_2 Uses Voltage Detection to Determine Reverse Revolution of Three-phase Motor • Detects motor reversal due to incorrect wiring. • Direction of motor revolution is detected as soon as power is applied to the Relay. If the power is reversed, the magnetic contactor locks in the open state. • The magnetic contactor can also be wired to protect it from being closed in open phase. • Small, plug-in Relay that needs no adjustment. • Uses voltage detection method to operate independently of load current. Model Number Structure ■ Model Number Legend APR-SD 1 2 1. Reverse Protection Relay 2. Control Power Supply Voltage None: 200/220 VAC 380: 380/400 VAC 440: 440 VAC Ordering Information■ List of Models Supply voltage

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Specifications ■ Ratings/Characteristics Type Operation • Suppose the motor revolves in the forward direction when the input terminals © ©, and ® of the APR-S are connected, in this sequence, to the power lines. The APR-S Relay turns ON when the phase sequence of the voltage is in the forward direction, that is, when the power lines R, S, and T are energized in this sequence. When the Relay turns ON, terminals © and © conduct, energizing the contactor. If one of the three phases is reversed, the Relay does not turn ON and the contactor is not energized. • To protect the motor from damage...

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Accessories (Order Separately) ■ Dimensions APR-S (Bottom View) (Bottom View)

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APR-S ■ Accessories for Track Mounting PFP-100N/PFP-50N Socket Mounting Track 7.3±0.15 1,000 (500)* * The dimensions given in parentheses are for the PFP-50N Socket Mounting Track. PFP-100N2 Socket Mounting Track 16

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Safety Precautions ■ Correct Use • With the APR-S, APR-S380, or APR-S440 an open phase at startup can be prevented only if connections are external and wiring has been performed to detect reverse phase and open phase at startup when the power supply is turned ON. When doing so, use an SE Static Motor Relay. An open phase when the power supply is turned ON can be detected only when it occurs between the APR-S, APR-S380, or APR-S440 and the power supply. An open phase cannot be detected on the load side. • Suppose the motor revolves in the forward direction when the input terminals 6, 4, and...

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Terms and Conditions Agreement Read and understand this catalog. Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Warranties. (a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron disclaims all other warranties, express or implied. (b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS...

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