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    MDI

    Mercury Displacement Industries or known better as MDI Inc. Got our start in 1975 as a small family owned business. Specializing in producing mercury relays and other mercury related products. In 1990, MDI added mercury floats to its list of manufactured products. MDI quietly became a leader for both relay and float switches.

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    Picture of 120V 30A 1POLE N/O CONTACTOR

    120V 30A 1POLE N/O CONTACTOR

    MERCURY DISP:30NO-120A
    SKU: MERCURY DISP:30NO-120A
    $56.23
    Picture of 120V 30A N/O CONTACTOR

    120V 30A N/O CONTACTOR

    MERCURY DISP:330NO-120A
    SKU: MERCURY DISP:330NO-120A
    $138.09
    Picture of 120V 30A N/O CONTACTOR & BRKT

    120V 30A N/O CONTACTOR & BRKT

    MERCURY DISP:330NO-120AU
    SKU: MERCURY DISP:330NO-120AU
    $148.16
    Picture of 120V 35A 1P N/O CONTACTORW/BKT

    120V 35A 1P N/O CONTACTORW/BKT

    MERCURY DISP:35NO-120ATU
    SKU: MERCURY DISP:35NO-120ATU
    $80.63
    Picture of 120V 35A 2P N/O CONTACTOR

    120V 35A 2P N/O CONTACTOR

    MERCURY DISP:235NO-120AT-18
    SKU: MERCURY DISP:235NO-120AT-18
    $143.49
    Picture of 120V 35A 2P N/O TB CONTACTOR

    120V 35A 2P N/O TB CONTACTOR

    MERCURY DISP:235NO-120A-18
    SKU: MERCURY DISP:235NO-120A-18
    $132.16
    Picture of 120V 35A N/O TOP TERM. CNTCTR

    120V 35A N/O TOP TERM. CNTCTR

    MERCURY DISP:35NO-120ATB
    SKU: MERCURY DISP:35NO-120ATB
    $80.63
    Picture of 1POLE 35AMP N/O 24V COIL

    1POLE 35AMP N/O 24V COIL

    MERCURY DISP:35NO-24AH
    SKU: MERCURY DISP:35NO-24AH
    $65.95
    Picture of 20-275V 1PH SOLID STATE RELAY

    20-275V 1PH SOLID STATE RELAY

    MERCURY DISP:SS40AU-1
    SKU: MERCURY DISP:SS40AU-1
    $275.26
    Picture of 220V 3POLE 30AMP CONTACTOR

    220V 3POLE 30AMP CONTACTOR

    MERCURY DISP:330NO-220AU
    SKU: MERCURY DISP:330NO-220AU
    $166.91
    Picture of 220V COIL 2P 35A CONTACTOR

    220V COIL 2P 35A CONTACTOR

    MERCURY DISP:235NO-220A-18
    SKU: MERCURY DISP:235NO-220A-18
    $136.45
    Picture of 24V 35A 2PNO CONTACTOR W/QC

    24V 35A 2PNO CONTACTOR W/QC

    MERCURY DISP:235NO-24AF
    SKU: MERCURY DISP:235NO-24AF
    $134.15
    Picture of 24V COIL 3P 35AMP CONT

    24V COIL 3P 35AMP CONT

    MERCURY DISP:235NO-24A-18
    SKU: MERCURY DISP:235NO-24A-18
    $132.76
    Picture of 24VAC1-POLE30AMPN/O CONTACTOR

    24VAC1-POLE30AMPN/O CONTACTOR

    MERCURY DISP:30NO-24A
    SKU: MERCURY DISP:30NO-24A
    $56.23
    Picture of 24VDC 35A 1P CONTACTOR

    24VDC 35A 1P CONTACTOR

    MERCURY DISP:35NO-24DT
    SKU: MERCURY DISP:35NO-24DT
    $67.98
    Picture of 24VDC 35A 1P CONTACTOR

    24VDC 35A 1P CONTACTOR

    MERCURY DISP:35NO-24DTB
    SKU: MERCURY DISP:35NO-24DTB
    $80.63
    Picture of 277V 35A 2P N/O CONTACTOR

    277V 35A 2P N/O CONTACTOR

    MERCURY DISP:235NO-277A-18
    SKU: MERCURY DISP:235NO-277A-18
    $169.21
    Picture of 277V 35A N/O 1P CONTACTOR

    277V 35A N/O 1P CONTACTOR

    MERCURY DISP:35NO-277AH
    SKU: MERCURY DISP:35NO-277AH
    $91.23
    Picture of 277V CONTACTOR

    277V CONTACTOR

    MERCURY DISP:235NO-277A
    SKU: MERCURY DISP:235NO-277A
    $181.65
    Picture of 2P 24V 35A N/O TOPTERMCONTACTR

    2P 24V 35A N/O TOPTERMCONTACTR

    MERCURY DISP:235NO-24AT-18
    SKU: MERCURY DISP:235NO-24AT-18
    $125.55
    Picture of 2P 35AMP 24VDC CONTACTOR

    2P 35AMP 24VDC CONTACTOR

    MERCURY DISP:235NO-24DT-18
    SKU: MERCURY DISP:235NO-24DT-18
    $125.55
    Picture of 2P 60A MERCURY RLY 120V COIL

    2P 60A MERCURY RLY 120V COIL

    MERCURY DISP:260NO-120A-18
    SKU: MERCURY DISP:260NO-120A-18
    $176.66
    Picture of 3 POLE 60AMP N/O 120V CONTACTR

    3 POLE 60AMP N/O 120V CONTACTR

    MERCURY DISP:360NO-120A
    SKU: MERCURY DISP:360NO-120A
    $356.03
    Picture of 3 POLE 60AMP N/O 120V CONTACTR

    3 POLE 60AMP N/O 120V CONTACTR

    MERCURY DISP:360NO-120A-18
    SKU: MERCURY DISP:360NO-120A-18
    $356.03
    Picture of 3 POLE 60AMP N/O 24V CONTACTOR

    3 POLE 60AMP N/O 24V CONTACTOR

    MERCURY DISP:360NO-24A
    SKU: MERCURY DISP:360NO-24A
    $356.03
    Picture of 30A 24V N/O CONTACTOR

    30A 24V N/O CONTACTOR

    MERCURY DISP:230NO-24A
    SKU: MERCURY DISP:230NO-24A
    $144.47
    Picture of 35A N/O CONTACTOR

    35A N/O CONTACTOR

    MERCURY DISP:L35NO-24AF
    SKU: MERCURY DISP:L35NO-24AF
    $129.77
    Picture of 3P 60AMP 24VDC CONTACTOR

    3P 60AMP 24VDC CONTACTOR

    MERCURY DISP:360NO-24D-18
    SKU: MERCURY DISP:360NO-24D-18
    $274.61
    Picture of BLUE ABS FLOAT RATED N/C 180F

    BLUE ABS FLOAT RATED N/C 180F

    MERCURY DISP:JE62CW1000-W
    SKU: MERCURY DISP:JE62CW1000-W
    $122.43
    Picture of CONTACTOR,2PULL,35A,N/O

    CONTACTOR,2PULL,35A,N/O

    MERCURY DISP:L235NO-24AF
    SKU: MERCURY DISP:L235NO-24AF
    $129.77
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