Robertshaw Temperature Control Refrigeration

The Robertshaw MT-512E-2HP is an electronic temperature control for refrigeration applications, rated for a 2 horsepower load.

The horsepower rating is the specification that determines what the control can switch directly, and it is easily overlooked on electronic controls.

Where a control switches a compressor directly, its output relay must be rated for that motor's running and starting current. Horsepower ratings on control outputs exist precisely to express this, since motor loads are characterised by horsepower rather than by a simple current figure.

Exceeding the rating welds the output relay, and a welded output leaves the compressor running continuously with no means of stopping it through the control.

The alternative arrangement is for the control to switch a contactor coil, with the contactor switching the compressor. This is a pilot duty application requiring only a modest output rating, and it is the correct approach for larger loads.

Establishing which arrangement an installation uses before selecting a replacement control avoids fitting a control whose output is inadequate.

Where a control of insufficient rating must be used, adding a contactor is the remedy rather than accepting the overload.

Applications include commercial refrigeration, coolers, freezers, and food service refrigeration equipment.

Brand

Robertshaw

SKU

MT-512E-2HP

Category

Temperature Controls

Weight

0.45 lbs

Dimensions

3.30" x 3.00" x 1.40"

Price

$118.00

Availability

In stock

Rating

0 / 5.0