MPI

      CROSS REFERENCE

 

Toronto Plant
21 Meteor Dr., Toronto
Ontario, Canada
M9W 1A3
Ph:(416) 675-7329
Ph:(800) 817-3486
Fx:(416) 675-7349

sajr@rogers.com

Buffalo Shipping
1010 Niagara St.
Buffalo NY USA
14213

Master Card, Visa, American Express

MDI Mercury Relays and SSR Relays - Morheat

MDI Mercury Relays are all designed and built to meet the most exacting demands of industry. They are ideal replacements for solid state relays and mechanical contactors. They have proved their ability to stand up under the most adverse conditions of temperature, dust and moisture, in all types of applications.
Contactors are hermetically sealed with high quality glass to metal seals and the stainless steel tube is totally encapsulated in high grade UL approved epoxy to prevent moisture damage and voltage breakdown.
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.

  1. MDI - Mercury Relays
  2. Solid State Relays
  3. MPI - Mercury Relays

 

MDI - Mercury Relays


 MDI - Mercury Relays

 MDI - Mercury Relays

MDI - Mercury Relays

30, 35, 60, 100 Amp Series
1, 2, 3, 4 Pole
Line Volts - 600, 3500VAC
UL, CSA, CE Approvals
30 Amp Economy Series (pdf)
35 Amp Series (pdf)
60 Amp Series (pdf)

100 Amp Series (pdf)
150 Amp Series (html)

Solid State Relays


Solid State Relays

Solid State Relays

Spec Sheets (pdf)
15, 25, 40, 50, 75, 100, 150 Amp Series
1, 3 Pole
Line Volts - 240, 600, 3500VAC
UL, CSA, CE Approvals

MPI - Mercury Relays

150 AMP Mercury Contactors

MDI 150 Main

COIL VOLTAGE: Up to 480 VAC , up to 250 VDC
PULL-IN VOLTAGE: 70% of rated voltage
DROP-OUT VOLTAGE: 65% of rated voltage
TIMING: Closing and opening between 40 and 90 milliseconds
CONTACT BOUNCE: None
CONTACT RESISTANCE: .001 ohm
CONTACT MODE: Norm, open, single throw
CONTACT RATING: *See below
DIELECTRIC WITHSTAND: 2500 V. RMS
LIFE EXPECTANCY: 25 million mechanical 5 million resistive load
TEMPERATURE RANGE: -35 degrees to 70 degrees C
NOTE: Values are typical, not absolute
150 AMP CONTACTOR
150NO-120AH *150 A. 480 V 120V 60 Hz .190 11 S.P.S.T.N.O.
2150NO-120AH AC Gen. Purpose 120V 60 Hz .380 22 D.P.S.T.N.O.
3150NO-120AH 120 A. 120 V. 120V 60 Hz .570 33 T.P.S.T.N.O. Tungsten
*CONTACT RATING PER POLE (RESISTIVE ONLY)
Volts 60 Hz
240V - 150Amps
277 - 140Amps
480 - 130Amps
600 - 120Amps

 

MPI - Mercury Relays

MDI-150-1 pole

MDI-150-2 pole

MDI-1503 pole

GENERAL INFORMATION - MDI Mercury Relays

MDI 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 proved their ability to stand up under the most adverse conditions of temperature, dust and moisture, in all types of applications. All the care required for the manufacture of high-grade instruments is used in the manufacture of the switches. All switch parts are specially cleaned, and contamination is avoided by use of tweezers, gloves, etc., when making assemblies.
Mercury Contactors are hermetically sealed with high quality glass to metal seals.
The stainless steel tube is totally encapsulated in high grade UL approved epoxy to prevent moisture damage and voltage breakdown through the protective coating.
The coils are wound on compact nylon bobbins and molded onto the metal tube to provide minimum power loss. This allows for low coil power required to actuate the contactor. This also enables the units to handle high loads with minimum derating due to higher ambient temperatures.
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. Other coil voltages available upon request.
In multiple pole units each tube is actuated by its own coil. This eliminates pull-in variation between contact tubes, assuring consistent switching.

FEATURES - MDI Mercury Relays


ADVANTAGES OVER ELECTROMECHANICAL AND SOLID STATE RELAYS

  1. Superior Performance and Reliability
    • Long life
    • Durable
  2. Compact Size
  3. Low, Predictable Contact Resistance
  4. Reduced RFI for Improved Interface Capability
  5. Handles a Variety of Loads
    • Increases design flexibility
  6. Rapid On-Off Cycling Capability
    •  Mercury quickly dissipates contact heat
  7. Low Coil Power Requirementsv H) Minimal Derating Due to Higher Ambient Temperatures
  8. Quiet Action

DESIGN & CONSTRUCTION

  1. Contacts are within a hermetically sealed steel body
      •  Impervious to adverse conditions
      •  No external arcing
  2. Arcing is in a gaseous atmosphere
      • Quenches the arc
      • Extends relay life
  3. Only one moving part (the plunger)
      • No buttons to pit, weld or burn out
  4. One coil for each set of contacts
      • Assures consistent switching
      • Minimizes pull-in variation between contacts
  5. Epoxy encapsulated
      • Moisture resistant
      • High dielectric strength
      • Permanently fixes contacts to coil; eliminating possible misalignment
      • Helps dissipate heat and noise
      • Rugged (impact resistant)

BENEFITS

  1. Reduction of Operational and Maintenance costs
  2. Increases Utilization and Productivity of Equipment
      • By reducing down-time
  3. Installation and service is a routine operation
      • Simple to install
      • No sophisticated equipment is required
      • Easy to trouble-shoot
2012 © MorHEAT Inc. Designed by Khaztech.
MPI