Selec PPRD-4M-1-230V, pump protection relay


PPRD-4M-1-230V is a comprehensive monitoring solution that safeguards against various electrical anomalies. It excels in monitoring Dry/Under Current, Over Current, Locked Current, Over Voltage, Under Voltage, Phase Failure, and Overload conditions, ensuring the integrity of electrical systems. The device’s electrical connection supports 1-Phase-2-Wire setups, while its manual/auto reset capabilities offer flexibility in response.

Its LED indicators provide clear insights into the power status and trip indications, enhancing system visibility. The 3-digit, 7-segment LED display facilitates easy monitoring of power levels. The voltage measuring range spans 180 to 300V AC (Line-to-Neutral), while the motor rated current measuring range extends from 1A to 30A.

Equipped with a control output of 1 NO (Normally Open) relay, rated at 32A@277V AC, the PPRD-4M-1-230V ensures efficient response to detected anomalies. Its accuracy is noteworthy, with current accuracy at ±5% of rated current, voltage accuracy at ±1% of 300V, and time accuracy at ±5% ±100msec.

The device offers an array of functional specifications, including NEMA class-based overload protection, customizable overcurrent ranges, undercurrent monitoring, and locked current detection. Its time settings are adjustable, including power-on delay, trip time delay, recovery time, and reset attempts.

Designed for DIN Rail mounting, the PPRD-4M-1-230V measures 66.50 x 70 x 90mm (Height x Width x Length), ensuring convenient integration within control panels or electrical setups. Its comprehensive features make it a reliable choice for safeguarding electrical systems and ensuring their optimal performance.


Measuring Parameter Monitors Dry/Under Current, Over Current, Locked Current, Over Voltage, Under Voltage, Phase Failure and Overload
Electrical Connection 1Ø – 2
Test / Reset Manual / Auto reset
LED Indication Power ON, Trip indication
Display Power 3 Digits, 7 Segment LED display
Voltage Measuring Range 180 to 300V AC (L – N)
Power Consumption 180 40VA (max)
Motor Rated Current Measuring range 1A to 30A
Output Contact Control Output 1 NO Relay,
Relay Rating 32A@277V AC
Accuracy Current Accuracy ±5% of rated current,
Voltage Accuracy ±1% of 300V,
Time Accuracy ±5% ±100msec
Functional Specifications Over load NEMA class 5, 10, 15, 20, 30,
Over current ranges [Ir (Rated current) + 1 to 32A],
Under current [0.2A to Ir (Rated current) – 1],
Locked current / Stall current [Ir (Rated current) + 1 to 32A],
Over voltage 180V – 300V AC ( L – N ),
Under voltage 180V – 300V AC ( L – N )
Time Setting Power ON delay 1sec (Fixed),
Trip time delay (Current & Voltage parameters) 0 – 999sec Recovery time (Current & Voltage parameters) 1 – 999sec,
Reset attempts 3 (fixed),
Reset Attempt Time Frame 1 – 999 mins
Auto Restart Attempts 3 (Fixed)
Mounting DIN Rail Mount
Size 66.50 x 70 x 90 (H x W x L)

Additional information

Weight 1 kg

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