60 AMP Mercury Contactors from MDI

MDI 60 AMP Mercury Contactors for Industry from Anderson-Bolds

BUY MDI Mercury Contactors HERE


Description

MERCURY TO METAL CONTACTOR
The mercury relays (mercury contactors) load terminals are isolated from each other by the glass in the hermetic seal. "The plunger assembly", which includes the ceramic insulator, the magnetic sleeve and related parts, floats on the mercury pool. When the coil is powered causing a magnetic field, the plunger assembly is pulled down into the mercury pool which is in turn displaced and moved up to make contact with the electrode, closing the circuit between the top and bottom load terminal, which is connected to the stainless steel can.

To make the unit function as a "Hybrid" time delay, we add a solid state circuit to the coil to delay the power to the coil.

For constant duty applications, a return spring is used in place of the buffer spring.
Contact the factory.

The MDI 60 amp contractors come in 1,2,3 and 4 pole versions and coil voltages can be 6, 12,24,48, 120 volts DC and 24, 120, 240, 277, 480 and 600 volts AC. Normally open contractors are the most common, close on energization. Normally closed are also available. Resistive loads are the more common type of loads but the "H" designated contactors are for inductive loads (with inrush currents). 

MDI 60NO-120A contactor

MDI 260-NO120A Contactor

MDI 360-NO120A Contactor

Features

1. ADVANTAGES OVER ELECTROMECHANICAL AND SOLID STATE RELAYS
2. 1. Superior Performance and Reliability
   2. 1. Long life
      2. Durable
   2. Compact Size
   3. Low, Predictable Contact Resistance
   4. Reduced RFI for Improved Interface Capability
   5. Handles a Variety of Loads
   6. 1. Increases design flexibility
   6. Rapid On-Off Cycling Capability
   7. 1. Mercury quickly dissipates contact heat
   7. Low Coil Power Requirements
   8. Minimal Derating Due to Higher Ambient Temperatures
   9. Quiet Action
2. DESIGN and CONSTRUCTION
3. 1. Contacts are within a hermetically sealed steel body
   2. 1. Impervious to adverse conditions
      2. No external arcing
   2. Arcing is in a gaseous atmosphere
   3. 1. Quenches the arc
      2. Extends relay life
   3. Only one moving part (the plunger)
   4. 1. No buttons to pit, weld or burn out
   4. One coil for each set of contacts
   5. 1. Assures consistent switching
      2. Minimizes pull-in variation between contacts
   5. Epoxy encapsulated
   6. 1. Moisture resistant
      2. High dielectric strength
      3. Permanently fixes contacts to coil; eliminating possible misalignment
      4. Helps dissipate heat and noise
      5. Rugged (impact resistant)
3. BENEFITS
1. Reduction of Operational and Maintenance costs
2. Increases Utilization and Productivity of Equipment
3. 1. By reducing down-time
3. Installation and service is a routine operation
1. Simple to install
2. No sophisticated equipment is required
3. Easy to trouble-shoot

Coil Data

417 Ω

144 mA

17.4 VA

8.7 Watts

• Operate Time: 50 milliseconds
• Release Time: 80 milliseconds
• Contacts:
  • 48 AMP @ 600 VAC Resistive
  • 60 AMP @ 480 VAC Resistive
    • or
  • 60 AMP @ 480 VAC General Purpose
• Contact Resistance: .002 ohm
  • After Cycling Under Load
• Coil: 120V 50/60 Hz
• Coil Terminals: #6 Binding Head Screws
• Load Terminals: 2-8 AWG Compression Type
• Dielectric Withstand: 2500 VAC RMS
• Longevity: Millions of Cycles
• Temperature Range: -35°C to 85°C

• 60NO Only
• AC Resistive
  • 240 VAC @ 60 AMPS
  • 480 VAC @ 60 AMPS
  • 600 VAC @ 48 AMPS
• Tungsten Lamp
  • 120 VAC @ 60 AMPS
• Motor Loads
  • Single Phase
    • Not Recommended

MDI 60NO120A, 60 amp Mercury Contactor, Single Pole, 120vac Coil, 600 max volts

MDI 260NO120A, 60 amp Mercury Contactor, Two Pole, 120vac Coil, 600 max volts

MDI 360NO120A, 60 amp Mercury Contactor, Three Pole, 120vac Coil, 600 max volts

MDI 460NO120A, 60 amp Mercury Contactor, Four Pole, 120vac Coil, 600 max volts

MDI 60NO24D, 60 amp Mercury Contactor, Single Pole, 24vdc Coil, 600 max volts

MDI 260NO24D, 60 amp Mercury Contactor, Two Pole, 24vdc Coil, 600 max volts

MDI 360NO24D, 60 amp Mercury Contactor, Three Pole, 24vdc Coil, 600 max volts

MDI 460NO24D, 60 amp Mercury Contactor, Four Pole, 24vdc Coil, 600 max volts

Anderson-Bolds
216-360-9800
www.anderson-bolds.com

Mercury Displacement Industries Mercury Contactors and Relays in 30, 35, 60 and 100 amps 

MDI 100 Amp 4 Pole Contactors

Anderson-Bolds carries 4 pole 100 AMP contractors from MDI

Buy All MDI Contactors HERE.

Mercury Displacement Industries (MDI) 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.

MDI 4100NO Relays - Note Dimensions below

MDI Four Pole Contactors are 10-1/8 Inches wide, 5-5/32 inches high and 2-11/16 wide.

The 100-AMP normally open contactors are designed and manufactured to high quality specifications and the contactors are commonly used in various heating, lighting, and many other industrial applications including high voltage ultraviolet type loads. The contacts are encased in hermetically sealed stainless steel tubes to provide reliable switching for millions of operations. MDI has manufactured this contactor since 1975. It is available in the single, two, three & four pole models.

MDI 4 Pole 100 AMP Contactor Specifications

* CONTACT RESISTANCE .001 ohms
* DIELECTRIC WITHSTAND 2,500 VAC RMS * OPERATE TIME 50 MILLISECONDS
* RELEASE TIME 80 MILLISECONDS

* RATINGS:
CONTACTS: 80 AMP @ 480 VAC
100 AMP @ 240 VAC
RESISTIVE COIL: 120V 50/60 Hz
RESISTANCE: 95 Ω CURRENT: 411 mA

VA: 65.6 WATTAGE: 28.4

* TEMPERATURE RANGE -35° TO +85° C
* COIL TERMINALS #6 BINDING HEAD SCREWS TORQUE TO 7 IN-LB
* LOAD TERMINALS 2-8 AWG COMPRESSION TYPE TORQUE TO 45 IN-LB
* FOUR POLE / SINGLE THROW * MAGNETICALLY ACTIVATED

* MERCURY CONTACTOR 

* LIFE CYCLE ENDURANCE TESTS: U.L. 508 @ 100,00 & CSA 22.2 @ 250,000 CYCLES 

Part numbers are:

4100NO-120A
4100NO-120AH - For Inductive Loads
4100NO-24A
4100NO-24AH - For Inductive Loads
4100NO-220A
4100NO-220AH - For Inductive Loads
4100NO-480A
4100NO-480AH - For Inductive Loads

4100NO-24D
4100NO-24DH - For Inductive Loads

• 100NO Only - Resistive Loads
• AC Resistive
  • 240 VAC @ 100 AMPS
  • 480 VAC @ 80 AMPS
  • 600 VAC @ 70 AMPS
• Tungsten Lamp
  • 120 VAC @ 100 AMPS
• Motor Loads
• Single Phase

• 100NOH - Inductive Loads
• AC Resistive
  • 240 VAC @ 100 AMPS
  • 480 VAC @ 80 AMPS
  • 600 VAC @ 70 AMPS
• AC Inductive
  (P.F. 0.4 or Greater)
  • 120 VAC @ 100 AMPS
  • 240 VAC @ 100 AMPS
• General Purpose
  (P.F. 0.7 or greater)
  • NC 240 VAC @ 80 AMPS
  • NO(H) 240 VAC @ 100 AMPS
  • 480 VAC @ 80 AMPS
• DC Resistive Heating
  • 48 VDC @ 100 AMPS
  • 125 VDC @ 50 AMPS
  • 250 VDC @ 30 AMPS
• Tungsten Lamp
  • 120 VAC @ 100 AMPS
• Motor Loads
  • Single Phase
    • 120 VAC @ 7.5 H.P.
    • 240 VAC @ 10 H.P.
• Three Phase
• 240 VAC @ 15 H.P.
• 480 VAC @ 20 H.P.

MDI Four Pole Contactors are 10-1/8 Inches wide, 5-5/32 inches high and 2-11/16 wide.

Normally Closed relays available upon request. Used mostly for security issues with power outages, Traffic signals and other emergency situations to turn ON batteries or generators.

Contact Anderson-Bolds

Anderson-Bolds
216-360-9800
www.anderson-bolds.com

Anderson-Bolds Sells MDI Solid State Relays

MDI Solid State Relays from Anderson-Bolds

MDI stocks the Solid State  "Hockey Puck"  design. These offer Direct copper bonding (DCB) technology, LED indication, Built-in varistor 480V and ratings up to 480 VAC and 75 AMPS. Fits and interchanges wilt all brands with the Hockey Puck design.


Buy MDI SSRs HERE

HPR48D25, HPR48A25, HPR48D50, 

HPR48A50, HPR48D75, HPR48A75

This MDI product is intended to replace mechanical contactors especially when switching is frequent. The smallest product width in the range is 2.13" (54mm) (3xDIN) and goes up to 2.84" (72 mm). 2-pole and 3-pole switching options are available. Apart from resistive and slightly inductive loads, the SSR is certified for motor switching with associated motor ratings. Varistors are integrated for output overvoltage protection. A green LED gives indication of control voltage presence. Fan operation is controlled for the versions which have an integrated fan. Specifications are at a surrounding temperature of 25°C unless otherwise specified.

2PSS60A25, 2PSS60A40, 3PSS60A30


This new range of MDI solid state contactors presents an unique opportunity to maximize efficiency in panel space and is an evolution of solid state switches. The nominal current ratings are at 40°C. The smallest width is 17.5mm and is rated at 20 AAC. Power and control terminals allow for safe looping of cables.

Voltage transient protection is standard across the output with a varistor. Specifications are stated at 25°C unless otherwise noted.

SS20AU-1, SS30AU-1, SS40AU-1, SS60AU-1
SS90AU-1, SS20DU-1 , SS30DU-1, SS40DU-1
SS60DU-1, SS90DU-1 

Buy MDI SSRs HERE

Anderson-Bolds
216-360-9800
Contact Anderson-Bolds

MDI 35 Amp Mercury Contactors

Anderson-Bolds stocks MDI ( Mercury Displacement Industries ) Mercury Contactors / Relays.

Mercury Displacement Relays / Contactors are ideally suited for use with electric heaters or any other rapid switching application. We also carry the H Series for Inductive Loads. (See Other Blog) The below contactors are for 35 amp loads, single or three phase resistive loads. Part number with a -18 are the same as the below. The -18 was an option for a metal strap in lieu of plastic. The plastic is no longer available so all units are in a sense the -18 units.

MDI 35NO120A, 35 amp Mercury Contactor, Single Pole, 120vac Coil, 600 max volts

MDI 235NO120A, 35 amp Mercury Contactor, Two Pole, 120vac Coil, 600 max volts

MDI 335NO120A, 35 amp Mercury Contactor, Three Pole, 120vac Coil, 600 max volts

MDI 435NO120A, 35 amp Mercury Contactor, Four Pole, 120vac Coil, 600 max volts

MDI 35NO220A, 35 amp Mercury Contactor, Single Pole, 220vac Coil, 600 max volts

MDI 235NO220A, 35 amp Mercury Contactor, Two Pole, 220vac Coil, 600 max volts

MDI 335NO220A, 35 amp Mercury Contactor, Three Pole, 220vac Coil, 600 max volts

MDI 435NO220A, 35 amp Mercury Contactor, Four Pole, 220vac Coil, 600 max volts

MDI 35NO480A, 35 amp Mercury Contactor, Single Pole, 480vac Coil, 600 max volts

MDI 235NO480A, 35 amp Mercury Contactor, Two Pole, 480vac Coil, 600 max volts

MDI 335NO480A, 35 amp Mercury Contactor, Three Pole, 480vac Coil, 600 max volts

MDI 435NO480A, 35 amp Mercury Contactor, Four Pole, 480vac Coil, 600 max volts

MDI 35NO24A, 35 amp Mercury Contactor, Single Pole, 24vac Coil, 600 max volts

MDI 235NO24A, 35 amp Mercury Contactor, Two Pole, 24vac Coil, 600 max volts

MDI 335NO24A, 35 amp Mercury Contactor, Three Pole, 24vac Coil, 600 max volts

MDI 435NO24A, 35 amp Mercury Contactor, Four Pole, 24vac Coil, 600 max volts

MDI 35NO24D, 35 amp Mercury Contactor, Single Pole, 24vdc Coil, 600 max volts

MDI 235NO24D, 35 amp Mercury Contactor, Two Pole, 24vdc Coil, 600 max volts

MDI 335NO24D, 35 amp Mercury Contactor, Three Pole, 24vdc Coil, 600 max volts

MDI 435NO24D, 35 amp Mercury Contactor, Four Pole, 24vdc Coil, 600 max volts

Anderson-Bolds was the first representative for MDI !!

Call to order, 216-360-9800 or email us.