Leviton powerswitch MDS3 Manual

powerswitch ®
WARNING
• TO AVOID FIRE, SHOCK, OR DEATH; TURN OFF POWER AT CIRCUIT BREAKER OR FUSE AND TEST THAT
POWER IS OFF BEFORE WIRING, OR SERVICING DEVICE.
• TO AVOID FIRE, SHOCK OR DEATH, DISCONNECT ALL POWER SUPPLIES TO ENCLOSURE BEFORE
EXPOSING INTERIOR. MORE THAN ONE SUPPLY DISCONNECT MAY BE REQUIRED
TO DE-ENERGIZE THIS EQUIPMENT BEFORE SERVICING.
• Separate overcurrent protection must be provided in accordance with the NEC
appropriate.
• This enclosure includes a lockout provision (in the OFF position) for a suitable padlock. USE ONLY a padlock with
a shackle diameter of 1/4 inch (6.35 mm) to isolate power from the connected equipment in compliance with OSHA
Lockout/Tagout Regulation 29 CFR Part 1910.147. NOTE: Lockout feature does NOT interrupt the power supplied to
the switch within the enclosure.
FEATURES
• Provides ON-OFF switched control of a directly connected load.
• Meets the requirements of Outdoor/Indoor (IP66, IP67, IP68, IP69K NEMA Type 3R, 4X, 12, 13 Watertight, Corrosion
Resistant) and Indoor (Type 12 Dust tight) installations.
• The cover cannot be opened or removed when the handle is in the "ON" position.
• This product is certified by NSF ® International for use in food processing facilities.
• Normally open and normally closed auxiliary contact (if used) is rated 10A-600VAC.

INSTALLATION

STEPS
1. Mount Safety Disconnect Switch.
2. Remove enclosure cover by loosening two cover screws and lifting cover off hinges.
3. Remove switch (see REMOVE SWITCH section). This is recommended to prevent steel debris from entering switch
components.
4. Drill or punch conduit hole in desired location(s). See Table 1 for fitting size.
5. Install conduit fitting. Ensure "O" ring is properly seated and the inside locking ring is seated tightly against the inside
surface of enclosure to ensure proper grounding.
6. Re-install switch (see REPLACE SWITCH section).
7. Connect wires (see WIRING section).
8. Replace cover and hand thread screws to engagement. NOTE: Handle must be in the "OFF" position to close cover.
Tighten screws to 15-18 in.-lbs. (1.7-2.0 N-m) torque.
Captive cover screw (2)
ON/OFF
handle
Drill point
Drill point for
breather drain
Mounting feet
Listed/certified
conduit hub rated
type 3R, 4X, 12
(not provided)
Condensation
drip loops
4.75"
Top or bottom conduit connection/wire entry
MDS6-AX depicted (60A)

WIRING

NOTE: Use conductors with insulation rated 75˚C or higher having sufficient ampacity in accordance with the 60˚C column of Table 310.15(B)(16) of the 2014 NEC
NOTE: Ensure that there are no stray conductor strands. DO NOT tin conductors.
1. WARNING: TO AVOID FIRE, SHOCK, OR DEATH; TURN OFF POWER AT CIRCUIT BREAKER OR FUSE AND TEST THAT POWER IS OFF BEFORE WIRING, OR SERVICING DEVICE.
2. Strip all conductors approximately 1/2" (13.0 mm). NOTE: Refer to conductor sizes accepted for specific switch below.
3. Connect conductors per appropriate WIRING DIAGRAM (see reverse side).
4. Tighten all terminal screws per specific torque values below:
MDS3-AX, MDS3-AC
Torque:
Switch terminals: 7 in-lbs. (0.8 N-m)
Neutral terminals: 7.1-8.9 in-lbs. (0.8-1.0 N-m)
Ground terminals: 7.1-8.9 in-lbs. (0.8-1.0 N-m)
Auxiliary contact*: 7 in-lbs. (0.8 N-m)
*(if used)
Conductor sizes accepted:
Switch terminals: #14 - #8 AWG.
Neutral terminals: #14 - #8 AWG.
Ground terminals: #14 - #8 AWG.
Auxiliary contact*: #18 - #14 AWG.
*(if used)
MDS3-AX - SSCR Rating:
Suitable for use on a circuit capable of delivering not
more than 10kA rms symmetrical amperes, 600V
max., when protected by 60A, Class J fuses.
Short circuit ratings at 600VAC
kA Fuse / A Class of fuse
10 60 J
HP Rating: 30/32A-600VAC Max.
Rating Poles HP Rating
30/32A 2 120 VAC 1 Ø 2 HP
30/32A 2 208-240 VAC 1Ø 5 HP
30/32A 2 480 VAC 1 Ø 5 HP
30/32A 2 600 VAC 1 Ø 5 HP
30/32A 3 120/208 VAC 3 Ø 10 HP
30/32A 3 208-240 VAC 3 Ø 10 HP
30/32A 3 480 VAC 3 Ø 20 HP
30/32A 3 600 VAC 3 Ø 25 HP
Auxiliary Contact Rating
10A 1 600 VAC
Safety Disconnect Switch in Watertight Enclosure
MDS3-AC, MDS3-AX - Rated: 30/32A-600VAC Max. MDS8-AC, MDS8-AX - Rated: 80A-600VAC Max.
MDS6-AC, MDS6-AX - Rated: 60A-600VAC Max.
® Article 220 or CEC, Section B as
Lift cover
off hinges
Drill point
Breather drain
(not supplied)
NOTE: Enclosure to be mounted such that drain
will always be on the bottom as shown)
Listed/certified
Mounting
conduit hub rated
holes for
type 3R, 4X, 12
enclosure
(not provided)
10.12"
Note: Auxiliary
Contact, if used
Condensation
drip loops
Dual top or bottom conduit connection/wire entry
MDS6-AX, MDS6-AC
Torque:
Switch terminals: 18 in-lbs. (2 N-m)
Neutral terminals: 31 in-lbs. (3.5 N-m)
Ground terminals: 31 in-lbs. (3.5 N-m)
Auxiliary contact*: 7 in-lbs. (0.8 N-m)
*(if used)
Conductor sizes accepted:
Switch terminals: #14 - #4 AWG.
Neutral terminals: #14 - #1/0 AWG.
Ground terminals: #14 - #2 AWG.
Auxiliary contact*: #18 - #14 AWG.
*(if used)
MDS6-AX - SSCR Rating:
Suitable for use on a circuit capable of delivering not
more than 100kA rms symmetrical amperes, 600V
max., when protected by 100A, Class J or T fuses.
Short circuit ratings at 600VAC
kA Fuse / A
100 100
HP Rating: 60A-600VAC Max.
Rating Poles HP Rating
60A 2 120 VAC 1 Ø
60A 2 208-240 VAC 1 Ø
60A 2 480 VAC 1 Ø
60A 2 600 VAC 1 Ø
60A 3 208-240 VAC 3 Ø
60A 3 480 VAC 3 Ø
60A 3 600 VAC 3 Ø
Auxiliary Contact Rating
10A 1 600 VAC
Cat. Nos.
MDS1-AC, MDS1-AX - Rated: 100A-600VAC Max.
Aux Contact Rated: 10A, 600V
CAUTIONS
• For installation only by an electrician in accordance with the National Electrical Code
Code (CEC) and local codes.
• Use this device with copper or copper clad wire only.
• Ensure that the rating marked on the device is correct for the intended installation.
• Suitable as Motor Disconnect on a circuit capable of delivering not more than:
- MDS3-AC, MDS3-AX - 10kA rms symmetrical amperes, 600V max., when protected by 60A, Class J fuses.
- MDS6-AC, MDS6-AX - 100kA rms symmetrical amperes, 600V max., when protected by 100A, Class J or T fuses.
- MDS8-AC, MDS8-AX - 100kA rms symmetrical amperes, 600V max., when protected by 100A, Class J or T fuses.
- MDS1-AC, MDS1-AX - 65kA rms symmetrical amperes, 600V max., when protected by 100A, Class J fuses.

INSTALLATION INSTRUCTIONS

NOTES:
• For NEMA Type 4X, Type 12 and IP69K applications, enclosure must be mounted by means of mounting feet.
Do not drill or punch any holes into enclosure for mounting purposes.
• Use of a UL Listed Watertight conduit fitting required to maintain the NEMA Type 4X, Type 12 and IP69K ratings.
Leviton conduit hubs (see Table 1) are rated for Type 4X and Type 12 applications. NOTE: If required, use only a listed/
certified breather drain rated for Type 4X, Type 12 and/or IP69K depending on required environmental application. Drill or
punch a 0.796" (20.2 mm) diameter hole through the bottom of the enclosure at the drill point provided.
• Mounting feet will accept up to 1/4" (6 mm) screws.
• Drill points provided for conduit entry.
• When using top or side feed conduit entrance, always form condensation drip loops in wiring as shown.
TABLE 1
Cat. No. Hub Trade Size
MDS3 3/4" (19.05 mm)
MDS6 1-1/4" (31.75 mm)
MDS8 1-1/4" (31.75 mm)
MDS1 1-1/4" (31.75 mm)
Switch
DIN rail
Ground bus
Neutral bus
Mounting
holes for
enclosure
10.12"
Note: Auxiliary
Contact, if used
4.75"
MDS8-AX depicted (80A)
MDS8-AX, MDS8-AC
Torque:
Switch terminals:
Neutral terminals:
Ground terminals:
Auxiliary contact*:
*(if used)
Conductor sizes accepted:
Switch terminals:
Neutral terminals:
Ground terminals:
Auxiliary contact*:
*(if used)
MDS8-AX - SSCR Rating:
Suitable for use on a circuit capable of delivering not
more than 100kA rms symmetrical amperes, 600V
max., when protected by 100A, Class J or T fuses.
Short circuit ratings at 600VAC
Class of fuse kA
J or T 100
HP Rating: 80A-600VAC Max.
Rating Poles
2 HP 80A 2 120 VAC 1 Ø
10 HP 80A 2 208-240 VAC 1 Ø
20 HP 80A 2 480 VAC 1 Ø
20 HP 80A 2 600 VAC 1 Ø
20 HP 80A 3 208-240 VAC 3 Ø
40 HP 80A 3 480 VAC 3 Ø
40 HP 80A 3 600 VAC 3 Ø
Auxiliary Contact Rating
10A 1 600 VAC
Min QTY Required Leviton Cat. No.
1
1
2
2
Note: Auxiliary
Listed/certified
Contact, if used
conduit hub rated
type 3R, 4X, 12
(not provided)
Condensation
drip loops
Top or bottom conduit connection/wire entry
Listed/certified
conduit hub rated
type 3R, 4X, 12
(not provided)
Condensation
drip loops
5.75"
Feed through conduit connection/wire entry
MDS1-AX depicted (100A)
® or Table 2 of the Canadian Electrical Code.
Torque:
18 in-lbs. (2 N-m) Switch terminals:
31 in-lbs. (3.5 N-m) Neutral terminals:
31 in-lbs. (3.5 N-m) Ground terminals:
7 in-lbs. (0.8 N-m) Auxiliary contact*:
*(if used)
Conductor sizes accepted:
#14 - #4 AWG. Switch terminals:
#14 - #1/0 AWG. Neutral terminals:
#14 - #2 AWG. Ground terminals:
#18 - #14 AWG. Auxiliary contact*:
*(if used)
MDS1-AX - SSCR Rating:
Suitable for use on a circuit capable of delivering not
more than 65kA rms symmetrical amperes, 600V
max., when protected by 100A, Class J fuses.
Short circuit ratings at 600VAC
Fuse / A Class of fuse
100 J or T
HP Rating: 100A-600VAC Max.
HP Rating Rating
2 HP 100A
10 HP
100A
20 HP 100A
20 HP
100A
20 HP
100A
40 HP
100A
40 HP
100A
100A
100A
10A
PK-A3191-10-00-0C
® (NEC ® ), the Canadian Electrical
ENGLISH
Conduit Hole
HUB-034 1.05" (26.67 mm)
HUB-114 1.66" (42.16 mm)
HUB-114 1.66" (42.16 mm)
HUB-114 1.66" (42.16 mm)
Mounting
holes for
enclosure
8.38"
Note: Auxiliary
3.5"
Contact, if used
MDS3-AX depicted (30A)
Mounting
holes for
enclosure
11.38"
Note: Auxiliary
Contact, if used
MDS1-AX, MDS1-AC
27 in-lbs. (3 N-m)
53 in-lbs. (6.0 N-m)
31 in-lbs. (3.5 N-m)
7 in-lbs. (0.8 N-m)
#8 - #1/0 AWG.
#6 - #1/0 AWG.
#14 - #2 AWG.
#18 - #12 AWG.
kA Fuse / A Class of fuse
65 100 J
Poles HP Rating
2 110-120 VAC 1 Ø 7.5 HP
2 220-240 VAC 1 Ø 20 HP
2 277 VAC 1 Ø 25 HP
2 440-480 VAC 1 Ø 30 HP
3 550-600 VAC 3 Ø 30 HP
3 110-120 VAC 3 Ø 15 HP
3 220-240 VAC 3 Ø 40 HP
3 440-480 VAC 3 Ø 60 HP
3 550-600 VAC 3 Ø 50 HP
Auxiliary Contact Rating
1 600 VAC