PUMP PROTECTION AGAINST DRY RUNNING - TYPE PMA50...
The PMA50... relay of the series is suitable for dry running pump protection against in single and three phase systems.
Tripping for maximum current, minimum cosphi, phase loss and wrong phase sequence.
The PMA50... is powered by the monitored voltage and has one relay output.


General charcteristics

  • Modular version 
  • Auxiliary supply 50/60Hz:
    - 220-240VAC
    - 380-415VAC
    - 440-480VAC
  • Direct connection (16A max) or by CT
  • External digital input for enabling or resetting
  • 1 relay output with 1 changeover contact rated 8A 250VAC in AC1, energised in normal conditions 
  • Green LED indicator for power on 
  • Red LED indicators for functions
  • Degree of protection: IP40 on front.

     

Order
code

Rated 
current
Ie
[A]

Auxiliary
power
supply
[V]

Functions

PMA50 A240

0.1-16

220-240VAC

Maximum current AC
Minimum cosphi
Phase loss
Wrong phase sequence

PMA50 A415

0.1-16

380-415VAC

PMA50 A480

0.1-16

440-480VAC

 
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