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Model 1250 One Conductor, 250 Amp

4 nuts included
Boot Kit available
Available in metric thread (1250-M / 1250-MS / 1250-MSX)
Available with stainless steel ball bearing (1250-SS / 1250-MS) (recommended for wet or corrosive environments)
Available with stainless steel body and bearing (1250-SX / 1250-MSX) (recommended for wet or corrosive environments)
Mercotac model 1250 series are ideal connectors for high-power applications such as on plating electrodes and welding cable reels.

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
1250 1 N/A 250 200 <1m 1200 140 (60) /-20(-29) 250 N/A
1250-SS 1 N/A 250 200 <1m 1200 140 (60) /-20(-29) 250 N/A
1250-M 1 N/A 250 200 <1m 1200 140 (60) /-20(-29) 250 N/A
1250-MS 1 N/A 250 200 <1m 1200 140 (60) /-20(-29) 250 N/A
1250-SX 1 N/A 250 200 <1m 1200 140 (60) /-20(-29) 250 N/A
1250-MSX 1 N/A 250 200 <1m 1200 140 (60) /-20(-29) 250 N/A

"SS" designator indicates stainless steel ball bearing
"M" designator indicates metric thread (M10 x 1.5)
"MS" designator indicates metric thread & stainless steel ball bearing
"SX" designator indicates stainless steel body & bearing
"MSX" designator indicates metric thread & stainless steel body & bearing
Note: The housing of the 1250 series Mercotac connector (anodized aluminum or stainless steel) is electrically "hot" to the internal conductor.

Model 1250 Accessories

57125 Boot Kit for dust and splash protection IP51

Model 1250 Connections

Model 1250 Suggested Mounting Methods

Model 1250 is typically mounted by the threaded stud on either end or by the black body using a set screw. When mounting horizontally, mount the Mercotac so the body of the connector rotates.

Typical Body Mount Dimensions
MODEL HOLE DIAMETER (Ø) * DEPTH
1250, et al 1.248" (31.70) .80" (20.0)
Typical Threaded Contact Mount
1250 (inch) 3/8 - 16 UNC .70" (17.8)
1250-M (metric) M10 X 1.5 .70" (17.8)
*Inch (mm) Tolerance Ø +.001" (+.025)
-.000" (-.000)

Top mount with conductive shaft.

Bottom mount with conductive shaft.

Horizontal mount with conductive shaft.

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