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Depluggable Terminal Strips for Panel / Chassis Mounting

321-S (-DS) 10.00 mm (0.394 in) Spacing   -   1-12 poles Print this page

  • Plug
  • Recommended mounting hardware: M3.5 pan head screw (#6-32 pan head screw) or similar sized sheet metal screw, self-tapping screw or rivet.
Technical Data

Center to Center Spacing: 10.000 mm (0.394 in)

Nominal Cross Section: 2.5 mm2 (3875 mils2)

Wire Stripping Length: 6.000 mm (0.236 in)

Bill of Materials

Molding : Polyamide, UL 94, V-2

Color : Off-white

Temperature limits : Short Time : 140°C (284°F)
Continuous : 105°C (221°F)Low Limit : -40°C (-40°F)

Ambient Temp. Range (°C) : 0°C to 0°C

Comparative Tracking Index : CTI ≥ 600 V

Oxygen Index Rating : 25 %


Terminal Body: Tin plated copper alloy

: Tin plated copper alloy

Screw: Yellow chromate passivated, zinc plated, steel M3



Whether panel, chassis, printed circuit or wire harness mounted, the 300 series terminal blocks are robust and versatile assets to complement your wiring needs. Male or female plugs can be on the wire harness or they can be on the panel, chassis or PCB. Male and female components can be adjusted for "connect ground first" type configurations where one of the components male or female is extended forward more than the other poles. Configurations with both male and female components can be designed to mate their appropriate counterparts. Plug in directions and wire entries can be oriented almost anyway possible with respect to the mounting surface. Insertion and extraction forces can be optimized for ease of use or for robustness to vibrations by utilizing different available models and sizes. All are designed to assure;od stable electrical conductivity,;od heat dissipation and repeated cycles of use. They can be specially marked to your specifications.

The screw tightened connections result in high contact forces thus promoting safe wire secureness and retention, low electrical resistance and safe reusable connections. All wire retention screws are captive in their towers and they cannot fall out during transportation, installation and use. Wire protectors are available to protect small gauge stranded wires from screw damage.

Visual Description
  • RoHS WEEE Pb free surface compliant
Approval Information UL File No. E69841  |  CSA File No. LR24322
    TYPE (Spacing)
    Current (A)
    Voltage (V)
    Screw Tightening
  • 321-S (-DS)
    10.00 mm
     B, D, E 
     4.5 lbfin 
  • 321-S (-DS)
    10.00 mm
     15 10
     300 300
     B D, E
     26-10 26-10
     0.51 Nm 0.51 Nm
  • Version DS is CSA certified for 26-12 AWG.
Plug-in direction parallel with wire entry direction
Please fill in the How to Order box
Wire protector:
Plated component: terminal body
Ordering Notes
Series 300-S Terminal Strips can be supplied in other colors. Male plugs may be supplied with a longer pin to engage ground first and disengage ground last. Please consult factory.








WECO Electrical Connectors Inc.
18050 Trans-Canada Highway, Kirkland, QC Canada H9J 4A1
Tel.: 1.514.694.9136 fax.: 1.514.694.0956
Toll free.: 1.800.724.2928 (US and CAnada only)