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Table of Contents
"MD2SR" Series:
Heavy Duty Single T hrow Safety Switch with Interlocked
Appleton Powertite Compatible Receptacle.
Class I Div. 2 Group B, C, D, T 3C
Class II Div. 1 Group F, G
NEMA Type 3, 3R, 4, 4X, 12 (Screw Cover Option)
Electrical Rating:
Maximum Voltage: 600 VAC at 60 Hz, 250 VDC 30, 60 or
100 Amperes, depending on current rating of product (See
product nameplate for details).
Read instructions carefully and with full understanding for safe installation and operation.
TABLE A - HORSEPOWER RATING:
DC
VOLTS
VOLTS
250
600
250
600
250
600
250
600
250
600
250
600
FIGURE A
g.
AC
CATALOG
AMPER ES
NUMBERS
30
MD2SR3023F
MD2SR3034F
30
MD2SR3023U
MD2SR3034U
60
MD2SR6023F
MD2SR6034F
60
MD2SR6023U
MD2SR6034U
100
MD2SR1023F
MD2SR1034F
100
MD2SR1023U
MD2SR1034U
INSTRUCTION SHEET
Instructions for Installation, Operation and Maintenance of
"MD2SR" Interlocked Receptacle with Switch: 30, 60 & 100
Ampere.
Compliances:
UL Listed, File No. E10784
UL 1682 Standard for Plugs, Receptacles, and Cable
Connectors of the Pin and Sleeve Type
UL 1010 - Plug Combinations for use in Hazardous Location
UL98
- Enclosed and Dead-Front Switches
UL50
- Enclosures for Electrical Equipment
UL894 - Switches for use in Hazardous Locations
NEC wire bending space, Table 373-6(8).
SWITCH
TYPE
STAN D A R D
FUSED
NON-FUSED
FUSED
NON-FUSED
FUSED
NON-FUSED
STANDARD FEATURES:
• Epoxy coated finish on receptacle and disconnect switch
housing.
• Current carrying parts in housing are all plated copper,
receptacle contacts are brass.
• Lugs - front removable, standard mechanical lugs on
incoming line. Lay-in ground lug.
• Screw cover assembly provided for use on receptacle
housing, instead of flip cover assembly to meet NEMA
Type 4 and 4X environmental conditions.
Except as expressly provided by Appleton Electric, LLC
(Appleton) in writing, Appleton products are intended for ulti
mate purchase by industrial users and for operation by per
sons trained and experienced in the use and maintenance of
this equipment and not for consumers or consumer use.
Appleton warranties do not extend to, and no reseller is
authorized to extend Appleton's warranties to, any consumer.
330140
H.P. R ATING
AC
MAX
7.5
20
--
30
15
50
--
50
30
50
---
50
Page 1
Rev. C 07 /08/04
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Table of Contents
Summary of Contents for EGS Appleton MD2SR Series
- Page 1 330140 INSTRUCTION SHEET Instructions for Installation, Operation and Maintenance of "MD2SR" Series: "MD2SR" Interlocked Receptacle with Switch: 30, 60 & 100 Heavy Duty Single T hrow Safety Switch with Interlocked Ampere. Appleton Powertite Compatible Receptacle. Compliances: Class I Div. 2 Group B, C, D, T 3C UL Listed, File No.
- Page 2 APPLICATION: • Designed to supply three(3) phase, grounded electrical power to portable or fixed electrical equipment such as welders, infrared ovens, batch feeders, conveyors and truck and marine docks. • Designed to provide an interlocked receptacle for use in hazardous locations, as defined in the National Electrical Code (NEC).
- Page 3 FIGURE B: CONTACT PHASE INDENTIFICATION MARKINGS GROUND CONTACT FUSES SHOWN LINE CONTACT NOT INCLUDED IDENTIFICATION WITH UNIT MARKING PADLOCK HOLE FUSE COVER CUT AWAY CLASS II INTERLOCKED TO SHOW RECEPTACLE ASSEMBLY --� FUSE HOLDER (P OWERTITE COMPATIBLE) (ASSEMBLY VIEW WITH COVER REMOVED) - UNIT SHOWN IS CAT. NO. MD2SR1034F Rev.
- Page 4 FIGURE C: MD2SR INTERLOCKED RECEPTACLE REDUCER BUSHING FUSES SHOWN NOT INCLUDED WITH UNIT (ASSEMBLY VIEW COVER REMOVED) - UNIT SHOW IS CAT. NO. MD2SR1034F CATALOG NUMBER DIMENSION "A" , ______ 16.7" ------ MD2SR3023F (42.3 CM) 3.0" MD2SR3023U (7.6 CM) MD2SR3034F MD2SR3034U MD2SR6023F 19.3"...
- Page 5 INSTA LLATION INSTRUCTIONS FOR "MD2SR" SERIES RECEPTACLES 30, 60 & 100 AMP INSTALL ATION 1. PREPARE MOUNTING POSITION: Owners are responsible for damages or injuries if these rules are not followed. WARNING • Before starting with the installation, make sure the enclosed switch assembly is suitable for the intended location according to the National Electrical Code or Canadian Electrical Code.
-
Page 6: Electrical Testing
5. WIRING (CONTINUED): TABLE D: TERMINAL WIRE RANGE AND STRIPPING GUIDE AMPERE STRIP LENGTH (INCHES) TERMINAL WIRE RANGE lAWG) RATING CONDUCTOR "A" BUILDING WIRE #8 - #6(CU) #6 - #2(CU) #4 - #4/0(CU) =� � ��� Z)l---�- �LINE CONDUCTORS l><XXXXX� � �� ::8)1-... -
Page 7: Maintenance
10. OPERATION: A. With an appropriate mating plug engaged, the Receptacle can now be turned to the "ON" position by lifting the Operating Handle @ to the upper-most position. • Safety feature - T he Receptacle is interlocked to the Operating Handle Mechanism so that a mating plug may not be inserted or removed when the switch is in the "ON"... - Page 8 D. SWIT CHING MECHANISM REPLACEMENT: To Remove Switching Mechanism • Remove LAB 1 O Switch by following the instructions in 12 B. • Remove four Mounting Screws ® for Switch Mounting Bracket ®, remove Switch Mounting Bracket. • For fused units, remove Rod Assembly. •...
-
Page 9: Reference Number
H. GROUND LUG REPLACEMENT: • Referring to "FIGURE B", loosen the Ground Lug Screw and remove ground wire from the Lug. • Remove Ground Lug Mounting Screw from the Mounting Plate. • Replace Ground Lug@ with the appropriate one shown in "TABLE E". •... - Page 10 WARNING If any parts of the "MD2SR" unit appear to be missing, broken or show signs of damage: DISCON TINUE USE IMMEDIAT ELY! This condition could cause serious / fatal personal injury due to electrocution and / or equipment damage. Repair with the proper replacement part(s) before continuing service.
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