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Model 205 Two Conductors, 4 Amps

High-speed model available (205-H)
Low-torque/low-temp. models available (205-L)
Available with stainless steel ball bearing (205-SS)

Mercotac model 205 is ideal for two-wire applications, such as thermocouples, strain gages, eddy current test devices, and wind turbine blade sensors, due to its compact size, quality signal connection, low torque and low cost.
Model 205 replaces the old model 590 for Leslie speakers and Hammond organs.

Model No. Terminals Voltage AC/DC Max Amp Rating Max. Freq. MHz Contact Resistance Max. RPM Temp
Max.F(C) / Min. F (C)
Rotation Torque
(gm-cm)
Circuit Separation
205 2 0-250 4 200 <1m 2000 140 (60) /45(7) 75 >25M
205-SS 2 0-250 4 2000 <1m 3600 140 (60) /45(7) 75 >25M
205-L 2 0-250 4 200 <1m 1200 140 (60) /-20(-29) 20 >25M
205-LS 2 0-250 4 200 <1m 1200 140 (60) /-20(-29) 75 >25M
205-H 2 0-250 4 200 <1m 3600 140 (60) /45(7) 35 >25M
205-HS 2 0-250 4 200 <1m 3600 140 (60) /45(7) 35 >25M

"SS" designator indicates stainless steel ball bearing (recommended for wet or corrosive environments)
"L" designator indicates low torque / low temp.
"LS" designator indicates low temp. & stainless steel ball bearing
"H" designator indicates high RPM
"HS" designator indicates high RPM & stainless steel ball bearing

Model 205 Accessories

592

two contact receptacle w/ 6" wires (18 AWG)

591

two contact receptacle w/ one 6" wire (18 AWG)


594

two contact receptacle w/ two solder holes for 18 AWG wires


595

two contact cap w/ two solder lugs

Receptacle used for mounting to rotating device. Accessories are required for wire connections. Order Separately.

Model 110-T & 105 Connections

Plastic cap with solder lug to attach stationary wire.

Metal receptacle press fits into rotating member of machine.

Cap plugs onto stationary end of 205 for attachment of stationary wire.

Model 205 Suggested Mounting Methods

Model 205 is typically mounted by the knurled metal receptacle, which is press-fit into the rotating member of the machine. When mounting horizontally, mount the Mercotac so the body of the connector rotates.

Receptacle Mount Hole Dimensions
MODEL HOLE DIAMETER (Ø) * DEPTH
591, 592, 594 .283" (7.19) .35" (8.89)
*Inch (mm) Tolerance Ø +.001" (+.025) -.000" (-.000)

Bottom mount with conductive shaft.

Top mount with conductive shaft.

Horizontal mount with electrically insulated shaft.

Horizontal mount with thermal and electrically insulated shaft.

Protective housing mounth with conductive shaft

Vibration isolating mount.

Installation Notes:

  • The up arrow should not point below horizontal
  • Do not solder to or bend connector tabs
  • Avoid lateral forces and mechanical loads (overly stiff or tight wires)
  • Do not rigid mount both ends of connector
  • Limit mounting eccentricity (runout / wobble) to .005" (.13mm)
  • Provide overload protection within the circuit
  • Avoid vibration and bumping motions