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Power Controls > Solid State Contactors > Mercury Displacement Relays

Please be aware of NYS laws applicable to Mercury Relays prior to purchasing!

Environmental Conservation Law Article 27 Title 21 Mercury-Added Consumer Products Law - Exhibit 1

Sections 5 - 8  applicable to Industrial use of products which include mercury.

5. On or after January first, two thousand six, no person shall sell, offer for sale or distribute the following mercury-added consumer products:

(a) mercury barometers;
(b) mercury esophageal dilators, mercury bougie tubes or mercury gastrointestinal tubes;
(c) mercury flow meters;
(d) mercury hygrometers or mercury psychrometers; and
(e) mercury pyrometers;

The provisions of this subdivision shall not apply to the sale or distribution of any mercury-added consumer product delineated in this subdivision if such product is used to replace a product that is a component in a larger product in use prior to January first, two thousand six, or the resale of any mercury-added consumer product delineated in this subdivision manufactured before December thirty-first, two thousand five.

6. On or after January first, two thousand seven, no person shall sell, offer for sale or distribute any mercury hydrometer or mercury manometer. The provisions of this subdivision shall not apply to the sale or distribution of any mercury-added consumer product delineated in this subdivision if such product is used to replace a product that is a component in a larger product in use prior to January first, two thousand seven, or the resale of any mercury-added consumer product delineated in this subdivision manufactured before December thirty-first, two thousand six.

7. On or after January first, two thousand eight, no person shall sell, offer for sale or distribute any mercury switch or mercury relay individually or as a product component. The provisions of this subdivision shall not apply to the sale or distribution of any mercury-added consumer product delineated in this subdivision if such product is used to replace a product that is a component in a larger product in use prior to January first, two thousand eight, or the resale of any mercury-added consumer product delineated in this subdivision manufactured before December thirty-first, two thousand seven.

8. On or after January first, two thousand twelve, no person shall sell, offer for sale or distribute any mercury sphygmomanometer, mercury wetted reed relay, mercury flame sensor, mercury thermometer, or mercury thermostat, except for mercury thermostats used by a blind or visually impaired person. The provisions of this subdivision shall not apply to the sale or distribution of any mercury-added consumer product delineated in this subdivision if such product is used to replace a product that is a component in a larger product in use prior to January first, two thousand twelve or the resale of any mercury-added consumer product delineated in this subdivision manufactured prior to January first, two thousand twelve.

For more information see the DEC NY site: http://www.dec.ny.gov/chemical/8853.html





MDI Mercury Relays

Mercury Displacement Relays are all designed and built to meet the most exacting demands of industry. They have won their high place in the electrical field by doing the tough and tricky jobs that ordinary equipment could at best do in an uncertain manner. They have proven their ability to stand up under the most adverse conditions of temperature, dust and moisture, in all types of applications.

Inert gases internally prevent excessive arcing between the mercury and the electrodes which enables the unit to function for millions of cycles with very low contact resistance, and minimum deterioration of the internal parts.



Available in all standard coil voltages, in single, two and three pole arrangements.

Available as replacement contactors

30 Amp Normally Open Contactors

35/60 Amp Contactors Normally Open / Closed

100 Amp Contactors Normally Open / Closed



Solid State Relays



Solid State Relays











Solid State Relays

Spec Sheet
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