contactor relay can be used.
Using models for coalescence and breakage from literature, DSA is successfully applied to the case of a laboratory scale rotating disk contactor.
The WR Series Room Thermostats are designed to directly control individual heaters or, by using an external contactor, can control several heaters.
They also provide contactor switching for corridor lighting and other key loads.
This £ 300,000 project, also designed by NPS, was completed in April and the main contactor was R G Carter Thetford Limited.