Selec PPRA ,

PPRA is a comprehensive monitoring solution designed to ensure the smooth operation of electrical systems. It effectively monitors various parameters including Over Load as per NEMA Curve, Over Current, Under Current / Dry run, Locked current, Over voltage, Under Voltage, and Phase failure. With an electrical connection of 1Ø – 2 and both manual and auto reset options, it offers flexible control. The LED indication displays Power ON, along with current and voltage parameters, providing clear visibility. It measures voltage within the range of 180 to 300V AC (L – N) and boasts a maximum power consumption of 40VA. Its accuracy specifications include Current Accuracy ±5% of rated current and Voltage Accuracy ±1% of 300V, ensuring precise measurements. Equipped with functional features such as Phase Loss detection and multiple time settings, the PPRA is a reliable solution for maintaining optimal electrical system performance. The unit’s compact DIN Rail Mount design and dimensions of DIN 66.50 x 70 x 90 (H x W x L) make it suitable for various industrial applications.


Measuring Parameter Monitors Over Load (As per NEMA Curve), Over Current, Under Current / Dry run, Locked current, Over voltage, Under Voltage, Phase failure
Electrical Connection 1Ø – 2
Test / Reset Manual / Auto reset
LED Indication Power ON, Current and Voltage parameter
Voltage Measuring Range 180 to 300V AC (L – N)
Power Consumption 40VA (max)
Motor Rated Current Measuring 1A to 30A
Output Contact Control Output 1 NO Relay,
Relay Rating 30A@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 10% – 70% of Ir (Rated Current),
Under Current 20% – 80% of Ir (Rated Current),
Locked Current / Stall Current Fixed : 300% of Ir (Rated Current),
Over Voltage Fixed (280V),
Under Voltage Fixed (180V),
Phase Loss Yes (<160V)
Time Setting Power ON Delay 1sec (Fixed)Trip Time Delay 0, 2, 4, 6, 8 & 10 sec,
(Current & Voltage parameters),
Auto Reser Time 15min,
(Current & Voltage parameters),
Phase Loss Trip Time Instantaneous (<120ms)
Auto Restart Attempts 3 (Fixed)
Mounting DIN Rail Mount
Size DIN 66.50 x 70 x 90 (H x W x L)

Additional information

Weight 1 kg

Related Products