The PM12 electromagnetic starter is mainly intended for switching electric drives and current collectors, as well as remote switching electric drives. One of the main advantages of starters of this series is the execution on the same mechanism of different capacities. It is mainly supplied with the RTL TU3 425-041-05758109-2008 current relay to protect the drive from overloads, including those caused by a break in one of the phases. Starters of this series of Russian production, they are produced by the Kursk Electrical Equipment Plant. They have a wear resistance class “B”.
Starters for starters
To increase the number of auxiliary contacts, the plant produces PCL and PKB prefixes for magnetic PM12 starters. To ensure a delay on or off, there is a PVL prefix, which provides a delay in the closure and opening of the contacts of the auxiliary circuit for up to 180 s. Installing consoles on magnetic starters is very simple - by clicking.
In own case
There are PM12 starters equipped with their own protection with a degree of IP 5.4. The number 5 indicates that the device is completely protected from contact. A certain amount of dust may get inside the device, but this will not interfere with its operation. The number 4 indicates that the spray flying in any direction should not affect its operation. They come with Start and Stop buttons located directly on the chassis.
Reverse execution
Also, magnetic starters of this manufacturer can be reversed. That is, in fact, paired. This rather interesting engineering solution allows to save a lot of space. Plus, mechanical blocking of starters is additionally provided, which increases operational safety.
terms of Use
PM12 magnetic starters can be operated in the environment with a degree of pollution 3. Moreover, their operating temperature is from -40 to +40. The manufacturer indicates that the operating temperature may be +55, but at the same time, the rated currents should be reduced by 10%. For proper operation, the height above sea level should be no more than 2000 m. It is also indicated by the manufacturer that the height can reach 4300 m above sea level, and at a voltage of 380 V it is necessary to select a starter so that the maximum current consumption is less by 10% than nominal.
Installation conditions
The PM12 starter is mounted on a vertical plane with the leads of the electromagnetic coil up and down, and when mounted on a DIN rail, it can deviate 15 degrees left-right. Depending on the environment, starters are available in degrees of protection 0.0, 2.0, and 5.4. The manufacturer claims that all electromagnetic starters PM12 manufactured by him are made of high quality materials and alloys. Testing of products, in particular electromagnetic relays, consoles, current relays, should ensure reliable operation. A current relay using the most modern bimetallic alloys will reliably protect equipment from abnormally high currents, as well as from the breakdown of one of the phases. Starters are made in the same color scheme, have an attractive appearance and are made quite aesthetically pleasing.