ADVANTAGES OF PTC STARTING
The primary advantage of the PTC relay is that it
allows a strong current flow through the start winding
of the motor during the initial start.
Appropriate motor design can benefit from savings in
the start winding and from the energy efficiency
improvements obtained with a run capacitor.
One PTC start relay usually fits a complete range of
compressors, thereby reducing inventory, part
numbering, and planning requirements.

ELECTRICA P SERIES PTC STARTING RELAY
P Series PTC Start Relays are compact components,
ideally suited for the starting of hermetic compressors
used in refrigerators, freezers and same commercial
application.

P relay incorporates a PTC (Positive Temperature
Coefficient) ceramic pellet with a low, controlled resistance value at
ambient temperature, which allows the motor to start.
After a short delay the PTC pellet increases its resistance
considerably, and reduces motor stating current to a very low value,
which is anyway sufficient to keep the PTC relay in a non-operating
condition as long as the motor is running. When the motor is
switched off, after a cooling down period (typically 3 minutes at
25°C ambient temperature) the PTC pellet resistance decreases to
its original low value. The relay is ready for another start.

P relay combined unit has been specifically designed to be
coupled with Electrica T series ¾” motor protectors in one compact
package. It offers the user advantages to reduce the number of
components and minimise assembly costs on the compressors.

GENERAL DATA
· Plug-in on three pins hermetic connector
· Rated voltage 115 or 230 Va.c.
· Load controlled Resistive and Inductive
· For Normal pollution condition (according to EN60730)
· Case material: thermoplastic compound
  PTI 250V – UL94 V0 – Rated 140°C
· Max switch head temperature 80°C
· Max mounting face temperature 80°C
· Endurance 100,000 cycles
· Terminals: 4.8 and 6.3 mm quick-connect.
Other options available upon request.
APPROVALS
· IMQ D.A.T. EF959
· VDE 4785 UG
· UL E51436