Marechal Electric MELTRIC DECONTACTOR DXA Series Operating Instructions

ENGLISH OPERATING INSTRUCTIONS
DXA SERIES
©2024 MELTRIC Corporation. All rights reserved.
meltric.com
MODE D'EMPLOI
INSTRUCCIONES
n
GENERAL
Plugs, receptacles, connectors, inlets and couplers are herein referred to
as "devices". DXA DECONTACTOR™ devices are intended for industrial
applications in potentially explosive atmospheres. In addition to IECEx
and cCSAus hazardous location ratings, they are cCSAus rated for current
interrupting duty and are HP rated for use as a motor disconnecting means.
They are not intended to be used as the primary motor or branch circuit
disconnect switch.
The receptacle safety shutter blocks access to the contacts and creates a
dead front that prevents user exposure to live parts. The opening/closing
of the safety shutter is controlled by the insertion/withdrawal of a plug with
compatible ratings and contact configurations.
WARNING
DANGER
devices. There are inherant dangers associated with electrical products and
failure to follow appropriate safety precautions can result in serious injury or
CAUTION
death. Be sure to disconnect all sources of shock before starting installation
or maintenance.
NOTICE
• All metal parts must be connected to Ground. A Ground connection is
supplied with all
• These devices must be used in accordance with their assigned current,
voltage, IP and Class/Division or Zone hazardous location.
• Any additional components used (e.g. cable entry, adaptor, thread plug,
etc.) must be certified with a protection mode(s) and IP ratings that
are compatible with and maintain the ratings of the device they
are used with. They must be installed according to the
manufacturer's instructions.
• Respect recommended tightening torques (see Table T2).
•
only. Connection to devices not bearing genuine
the warranty and ratings.
• Certification requires that any replacement of component(s) must
be performed under the control of the manufacturer MARECHAL
ELECTRIC S.A.S.
n
RATINGS & CERTIFICATIONS
DXA devices have both cCSAus and IEC ratings for use in hazardous
environments.
Class I Zone 1 AEx de IIC T*Gb Zone 21 AEx tD T*Db
Class 1 Division 2 Group A, B, C, D
Class 2 Division 2 Group E, F, G
This NEC and CEC rating certifies the product for use in applications where
flammable gases, such as acetylene, hydrogen, ethylene or propane, or
dusts, such as magnesium, coal or grain, may be present under abnormal
conditions.
Ex de IIC T*Gb Ex tb IIIC T* Db
This IEC rating certifies the product for use in surface (non-underground)
applications where a high level of protection is required and where
the presence of an explosive atmosphere of any type of gas or dust is likely
to occur. The associated maximum surface temperature of the product is
88°C (190°F), at an ambient temperature of 60°C (140°F).
Short Circuit Make & Withstand Rating
DXA devices are rated to make and withstand short circuit currents with
appropriate fusing as indicated in Table T1. Consult NEC for Short Circuit
Limits.
T1 - Short Circuit Make & Withstanding Ratings
Device
DXA1 - 20 A 25 kA @ 600 Vac RK1 30 A
** DXA1 ratings are based on testing with Mersen Non-Time delay.
Current limiting fuses.
Auxiliary Contact Ratings
Some DXA devices are provided with optional auxiliary contacts that make
after and break before the phase contacts. The ratings for auxiliary contacts
are shown in Table T2.
n
INSTALLATION
T2
1-2-3-N Auxiliary
1 2
Device mm AWG mm
1
DXA1 1.5-6 16-10
Wire capacity is based on certification testing. Wire size should be determined in accordance with
1
the electrical code.
A device intended for flexible connections must be equipped with a flexible cord listed for extra-hard usage and
2
terminated with listed fittings in accordance with all applicable local and national electrical codes
See Figure F1
• Install the receptacle on a downward angle, with the latching pawls at
the top and at the bottom.
• Panel mounted devices must be assembled on a "Ex e" increased
safety enclosure according to the drilling Figure F1.
Figure F1
D
n
WIRING
• The contact terminals are spring-assisted to prevent loosening due to
strand settlement, vibration or thermal cycling.
n
CONDUCTOR PREPARATION
• Remove an adequate length of cable outer sheath according to the
accessory used.
• Ensure that the cable sheathing extends through the cord grip into the
handle or box as required to achieve the intended sealing and cord
gripping performance.
• Strip conductor insulation to the length indicated in Table T2.
• (Do not back terminal screws completely out). Fully insert the conductor
and tighten the terminal screws to the torque indicated in Table T2.
n
GROUNDING CONNECTIONS
DXA1 metal casings are equipped with 3 ground terminals as shown in
Figure F2.
Figure F2
• One ground terminal is factory-wired to the ground contact. This wire
must not be removed as it also grounds the second and third ground
terminals.
• Second ground terminal is used for the ground conductor.
• Third ground terminal is used to ground the accessory (box, handle,
angle).
n COLOR CODED GASKETS
Insert the color-coded gaskets between the device and its rear accessory
(box, handle, angle).
The two protrusions on the gasket must be positioned on the latch sides of
the receptacle/connector and on the catch side for the inlet/plug. This gasket
is needed to maintain the IP rating.
If used in conjunction with finger draw plates, the gasket must be between
the receptacle (or inlet).
n OPERATION
See Figure F3
F3
1
1
Only devices with compatible contact configurations and electrical
•
ratings will mate with each other.
• The receptacle is shielded by a protective lid held in the closed position
by two latches. Depress the latches to release the lid.
• To connect, align the arrow heads on the housings (see Figure F4),
insert the device and turn it clockwise until it hits a stop. The device
is in the rest position and the circuit remains open.
Figure F4
Push the device straight into the complementary device until it becomes
•
securely latched.
• To disconnect, depress the latching pawls simultaneously. The device
returns to its rest position and the circuit is open.
• To remove the device, turn it counter-clockwise and pull.
Replace receptacle lid.
CONNECTION LOCKING (OPTION)
n
With the plug fully mated to the receptacle, insert the metal locking pin
through the hole in the pawl on the receptacle and place a padlock or other
locking device through one of the holes on locking pin. This will prevent
unintended disconnection.
PLUG LOCKOUT (OPTION)
n
• To prevent the plug from being inserted into a receptacle, place a
padlock or other lockout device through the hole provided in the
plug casing.
MAINTENANCE
n
• IEC/EN 60079-17 & UL 60079-17standard: Explosive atmospheres
– Part 17: "Electrical installations inspection and maintenance",
foresees very strict requirements regarding the maintenance of electric
installations which must be imperatively respected.
• Ensure that the fixing screws, caps and cable glands are tight.
• Verify that the weight of the cable is supported by the strain relief
mechanism and not by the terminal connections.
• Check the cleanliness of contacts.
• To inspect the contacts, depress the springloaded ejection ring on two
opposite points. The safety shutter can then be rotated clockwise to
inspect contact tips.
• Any deposit can be rubbed off with a clean cloth or compressed air.
In case of damage, contact your supplier to have them replaced by the
•
manufacturer.
• Do not forget to re-lock the safety shutter after inspection.
• Inspect periodically IP gaskets for wear and resilience. Replace as
required.
• Check regularly the continuity of the ground circuit by electric tests.
MANUFACTURER'S RESPONSIBILITY
n
MELTRIC
's responsibility is strictly limited to the repair or replacement of
®
any product that does not conform to the warranty specified in the purchase
contract. MELTRIC
damages associated with the loss of production, work, profit or any financial
loss incurred by the customer.
MELTRIC
® Corporation shall not be held liable when its products are used
in conjunction with products not bearing the
The devices that are not marked with the
shall void all warranties on the product and listing is invalidated.
MELTRIC Corporation is an ISO 9001 certified company. Its products are
designed, manufactured and rated in accordance with applicable UL, CSA,
and IEC standards. MELTRIC
in accordance with Marechal keying standards established to ensure
intermatablility with similarly rated products manufactured by Marechal
Electric Group.
Nous
We
Déclarons sous notre seule responsabilité que notre appareil :
Declare under our sole responsibility that our device:
Type Intensité
Type Intensity
DXA1
20 A
: Une étude comparative des normes EN IEC 60079-0 : 2018 et EN 60079-0 : 2012 + A11:2013, EN 60079-7 (A1 :2018 et 2015) montre que le
(**)
matériel n'est pas concerné par les modifications substantielles.
A comparative study of the standards EN IEC 60079-0:2018 et EN 60079-0:2012 + A11:2013, EN 60079-7 (A1:2018 and 2015) shows that the
products are not concerned by the substantial modifications.
Satisfait aux dispositions des Directives Européennes n° :
(Et aux décrets d'application dans les Etats Membres)
Satisfies to the measures set by the European Directives n°:
(And to its application decrees in the Member States)
Est conforme aux exigences de la (des) norme(s) :
Complies to the standard(s) requirements:
N° de Notification de l'Evaluation relatif à la Qualité : LCIE 00 ATEX Q 8001 selon l'Annexe IV réalisé par l'organisme notifié n° 0081 :
Quality Assessment Notification N°: LCIE 00 ATEX Q 8001 according to Annex IV carried out by Notified Body N° 0081:
LCIE – 33, avenue du Général Leclerc – 92260 Fontenay-Aux-Roses – France
MARECHAL ELECTRIC S.A.S. au capital de 5 341 400 € - SIRET 552 149 577 00058 - NAF 2733Z – N° TVA FR16552149577
MELTRIC Corporation / 4765 W. Oakwood Park Drive Franklin, WI 53132
These instructions must be followed to ensure the
proper installation, operation and maintenance of the
devices must be used with
m
arechal
1-2-3-N
1 2
A-B
AWG mm inch
2
-- -- 12 0.50
A
2
m
shall not be liable for any penalties or consequential
®
MARECHAL ELECTRIC S.A.S.
5, avenue du chemin de presles
94410 - Saint-Maurice - France
Marquage
Marking
 II 2 G D
Ex db eb IIC T* Gb Ex tb IIIC T* Db
-55°C  Ta  +60 °C
*
-55°C  Ta  +40 °C
LCIE 15 ATEX 3033 X
5, avenue du chemin de Presles 94410 Saint-Maurice FRANCE - +33 (0)1 45 11 60 00 - contact@marechal.com
Tel. : 800 433 7642 / Fax : 414 433-2701 / e-mail : mail@meltric.com
A manufacturer of products using MARECHAL
metal accessories.
Rating Fuse
m
arechal
Auxiliary 1-2-3-N
A-B
mm inch mm inch
-- -- 12 0.50
4x
Ø
A
2
arechal
® designs and manufactures its products
Déclaration UE de Conformité
EU Declaration of Conformity
Tel : +33 (0)1 45 11 60 00
Fax : +33 (0)1 45 11 60 60
E-mail : contact@marechal.com
Prise de courant pour usages industriels type DXA1.
Plug and socket-outlet for industrial uses type DXA1.
Caractéristiques d'étanchéité
watertightness
characteristics
IP66/IP67
T5 T88°C
T6 T68°C
2014/34/UE du 26 février 2014 (ATEX)
2014/35/UE du 26 février 2014 (limite de tension)
2011/65/UE + amd n° 2015/863 du 31/03/2015 (RoHS)
2014/34/EU dated February 26, 2014 (ATEX)
2014/35/EU dated February 26, 2014 (Low voltage)
2011/65/EU + amd No 2015/863, date:2015/03/31 (RoHS)
IEC 60309-1 ed. 5.0
Saint-Maurice,
Anne LE GUENNEC
Responsable Produits Ex
Ex-Proof Product Manager
complementary devices
parts will void
Type*
Auxiliary 1-2-3-N
A-B
inch-
mm inch Nm
lbs
-- -- 0.8 7.1
DXA1 inch mm
A 1.89 48
D 2.24 57
Ø
.196 (#9) 5
3
3
technology trademark.
technology trademark
Conformes aux normes suivantes :
Complies with the following
standards:
EN IEC 60079-0 : 2018 (**)
EN 60079-1 : 2014
EN IEC 60079-7:2015/A1:2018 (**)
EN 60079-31 : 2014
2023-02-16
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INSDXA B
TECHNOLOGY
®
Auxiliary
A-B
3 (Philips)
inch-
Nm
lbs
3x0.75 mm
-- --
1/8"
INSDXA B