Marechal DS7C3 Star-Delta Motor Connectors – AC-22 50A 500V

Marechal DB3 Motor Switches - 7.5kW 40A AC-3 Load Break Switch

motor connectors

marechal ds7c3

Marechal DS7C3  Star-Delta motor connectors have current ratings of 50A with the ability to connect motors with two operating speeds.

Marechal DS7C3  motor connectors guarantee the safety of personnel throughout an operation on the load (motor load or highly inductive) and a maximum voltage of 500 V.

Marechal DS7C3 motor connectors

Technical Specification

Rated Current (with wiring according to standard) 50A
Maximum Voltage 500V
Ingress Protection Lid Closed IP55
Ingress Protection Connected Plug IP54
Impact Resistance (poly casing) IK08
Impact Resistance (metal casing) IK09
Ambient Temperature -40ºC to +60ºC
Flexible Wiring (Min-Max) 2.5mm² – 10mm²
Stranded Wiring (Min-Max) 2.5mm² – 16mm²
Pre-wired auxiliary contacts (5 A) screw-type
Keying Positions 5

Load Break Capability of Connector

  • Comply with IEC EN 60309-1 and IEC EN 60309-4 standards  – 50 A / 500 V
  • Load-break capability according to IEC EN 60947-3 / AC-22 : – 50 A / 500 V


Marechal DS7C3 Star-Delta Motor Connector – AC-22 50A 500V 1

Marechal DS7C3 Plug Assembly manufactured from metal with IP55 protection and 50amp current supply is configured using associated wall mounting socket, plug, wall box, outlet, inlet and handles.

A full range of boxes, sleeves, handles, adaptors and accessories can also be supplied. Marechal’s Star-Delta range of plugs and sockets are suitable for rated currents from 30A up to 50A and maximum voltage from 415V-500V

Marechal DS7C3 Motor connectors

Marechal Part Number Marechal DN9C Marechal DS7C3
Imax per phase 30 Amp 50 Amp
Umax 415 V 500 V
AC-22 switching capability  30 A / 415 V 50 A / 500 V
Same Dimension as DN1 DS6
Auxiliary contacts (max) 2 3
Keying Positions (To distinguish between different power supplies & applications) 2 5
Ambient Temperature -40 °C to +60 °C for all
Wiring (terminals) screw-type

Marechal DS7C3 – Socket Outlets & Inlets
Umax (V) / lmax (A) Polarity Marechal Socket Outlet (Female) DS7C3 50A Marechal Inlet (Male) DS7C3 50A
500 / 50 6P+E 3934561 3938561
500 / 50 6P+E+3 aux 3934561972 3938561972
Power Distribution & Control In Hazardous Areas

T&D also distribute hazardous area isolators, control panels and distribution boards, electrical enclosures and motor starters certified according to ATEX for use in Zone 1 & Zone 2 (gas/vapour) explosive atmospheres.

Hazardous Area ATEX Zone 1 Zone 2 - Power Distribution

Data Sheets