Marechal EVO | The First Separable Switch Disconnector

Published 16 Sep 2019

Marechal EVO The First Plug, Switch & Disconnector Combined to Provide 3-in-1 Power Connections

Marechal EVO The First Separable, Switch-Disconnector


A Separable Switch & Disconnector

Marechal Electric introduced to the market their first switch disconnector 40A and first separable switch disconnector. The uniquely and ergonomically designed Marechal EVO combines three products in one – switch, disconnector and plug offering greater safety, easier use and less space for installation.

Below describes the features and benefits of Marechal’s new twist and switch technology.

The range of Marechal switches, plugs and sockets are available in a range of current ratings, switching capabilities, voltage supply and hazardous area certifications (according to ATEX & IECEx) for safe use in potentially explosive atmospheres – this includes oil, gas and petrochem industries with hazardous area Zones 1 & 2 (Gas) and Zones 21 & 22 (Dust).

Marechal EVO | The First Plug, Switch & Disconnector Combined to Provide 3-in-1 Power Connections

Marechal EVO | The First Separable Switch-Disconnector


Marechal EVO is created mainly to enhance the safety for user and installations. Its flawless design enables the opening and separation, even if there is an overintensity or overvoltage default. Nowdays, with a typical switch-disconnector, in case of overintensity, you can’t be guaranteed of the disconnection if the contacts melt. With EVO, the division is apparent as the product is split into in two parts.

Marechal EVO 3-in-1 Power Connections Plug, Switch & Disconnector

Marechal EVO The First Separable Switch-Disconnector



The industry has a new safety reflex thanks to its rotary twist: lining up both “O” and placing simultaneously the two parts of the switch disconnector without any powering. Twisting the EVO into the “OFF” position means it is prepared for connection without any power running through it.

The main benefit of the EVO in this position is to have a waterproof product without power.

Twist once more to place the product into the “ON” position meaning the EVO is powered but still watertight.

​EVO offers a positive break indication that reflects the exact position of the contacts.

Mating Position

OFF position IP66 IP67, padlockable

ON position IP66 IP67 lockable

Mating Position OFF position IP66/IP67, padlockable ON position IP66/IP67 lockable
Marechal EVO - First Detachable Switch-Disconnector

Marechal EVO – First Detachable Switch-Disconnector

Suitable for arduous environments with an operating temperature of between -25°C to +60°C as the separation shows the exact position of the contacts and promises 100% safety during any maintenance operation.

The design of the EVO provides greater flexibility and suitability in the most challenging applications in terms of hygiene, robustness and reliability.

The switch disconnector manufactured by Marechal can be used in all industries as it is very easy to install: only one tool is needed!  Using a screwdriver the installer can easily put the switch isolator in the correct place.


The unique technology incorporates functionalities of a 40A switch, a disconnector and an industrial connector available with self-cleaning silver contacts with silver tips and bespoke “twist” mechanism.

Merging three products into one streamlines your electrical installation and the ergonomic design makes managing and cleaning simpler. The product is watertight (IP66 / IP67), in the ON and OFF positions.

Safety is Marechal’s main priority when it comes to the EVO40. A visible and detachable break ensures the safe isolation of any low electrical circuit (AC-23 18.5 kW, AC-3 11 kW).

EVO40 complies with the IEC 60204-1 standard for machine safety and the switch disconnector is adapted for all motor plugging configuration up to 6 poles + earth.

A strong and durable switch that can be installed on a wall or in-line for mobile installations and can be lockable and padlockable in ON and OFF positions.

Switch Isolator Plug


  • Function: electrical disconnection of the circuit
  • Two position (open/closed)
  • IEC 60947-3 compliance
  • Resistance to short-circuit current
  • Padlockable
  • Manual control
  • Clearly visible isolation


  • Function: connect, carry and break the current
  • IEC 60947-3 compliance
  • AC-3 on load breaking
  • Mechanical and electrical endurance
  • Padlockable

Marechal EVO

Features & Benefits

  • 1 switch + 1 isolator + 1 socket outlet – Simplification and economy
  • Smooth crevice free design, no visible fixing screws – Easy to clean
  • Positive, clearly visible and detachable breaking – 100% assured safety
  • No access to live parts – User safety and compliance with standards
  • Disconnection speed independent of operator use – Easy to use
  • Up to 6 poles + earth – Ability to connect power and/or control signals
  • Automatic IP66/IP67 sealing in ON and OFF positions – Suitable for harsh industrial environments
  • Suitable for frequent switching of mixed resistive and inductive circuits
  • 3 possible installations – In line coupler, on an enclosure & a wall box
EVO Technical Specification
Mechanical Endurance > 10,000 cycles
Electrical Endurance 1500 cycles
Ui: Rated Insulation Voltage 1000 V AC/1500 V DC
Ith: Conventional Thermal Current in Free Air 40 A
Uimp: Rated Impulse Withstand Voltage 8 kV
AC-23A – 400 V AC 18.5 kW
AC-3 – 690 V AC 11 kW
Irms: Peak-to-Peak Current with Fuses (kA) 10 kA
Icm: Rated short-time making capacity (kA peak) 1 kA
Cable Cross-Section Cu (sqmm) 2.5 – 10 sqmm flexible
2.5 – 16 sqmm stranded
Degree of Protection (IEC 60529) IP66/IP67
Shock Resistance (IEC62262) IK09
Ambient Air Temperature – 25ºC / + 60ºC

Marechal EVO40 Part Numbers

Marechal EVO Outlet Inlet Straight Sleeve 70º Inclined Sleeve Handle Wall Box
Voltage Poles Outlet Inlet Straight Sleeve 70º Inclined Sleeve Handle  90º Wall Box
200-250 V AC 2P+E 8144032 8148032 51LM0 51LM7 51LP0D21(2) 51LC9000
3P+E 8144033 8148033
4P+E 8144034 8148034
6P+E 8144036 8148036
380-480 V AC 2P+E 8144012 8148012 51LM0 51LM7 51LP0D21(2) 51LC9000
3P+E 8144013 8148013
4P+E 8144014 8148014
6P+E 8144016 8148016
500-690 V AC 2P+E 8144052 8148052 51LM0 51LM7 51LP0D21(2) 51LC9000
3P+E 8144053 8148053
4P+E 8144054 8148054
6P+E 8144056 8148056
Other Voltages 2P+E 8144122 8148122 51LM0 51LM7 51LP0D21(2) 51LC9000
3P+E 8144123 8148123
4P+E 8144124 8148124
6P+E 8144126 8148126

(1) Without thread, entry upwards. Reversible at 50° with downward entry.
(2) Gland size 5-21 mm.

Compliance With IEC StandardsIEC Standards
  • IEC/EN 60947-3/-4/-5 – Low voltage switchgear and control gear: Switches, disconnectors, switch-disconnectors and fuse-combination units
  • IEC/EN 60309-1/-4 – Plugs, socket outlets and couplers for industrial purposes
  • IEC/EN 61984 – Plugs, socket-outlets and couplers for industrial purposes
  • European Directive 2006/42/CE, ISO12100, IEC/EN60204-1 – Safety for machines and applications


Marechal Plugs

Industrial Power Plugs – Marechal Decontactors with 16A to 700A current ratings and 1,000 volt power supply.

Hazardous Area Plugs Sockets - Marechal

Hazardous Area Plugs & Sockets – ATEX certified for explosive atmospheres Zone 1 & Zone 2 (Gas) and Zone 21 & Zone 22 (Dust).



Thorne & Derrick are Specialist Distributors of Hazardous Area & Explosion Proof Equipment with IECEx & ATEX Certifications to the onshore and offshore oil, gas, petrochemicals and process industries.

Key Product Categories: Control Panels | Plugs & Sockets | Isolators | Enclosures & Junction Boxes | Lighting | Control Stations | Motor Starters | Heat Trace Cables & Systems | Gas Detection & Detectors | Fire Detection & Detectors | Heat Detectors | Electrical Heating & Heaters

➡ Also Process Instrumentation Products: Ashcroft Pressure Gauges | ASCO Valves | Katronic Flow Meters | KROHNE Flow Meters VEGA Level Sensors | Rotronic Temperature & Humidity Sensors | SIKA Pressure Gauges

Specialists to the Process & Hazardous Area Industries

Specialists to the Process & Hazardous Area Industries

Further Reading