Specifications

ASIA • AUSTRALIA • BRAZIL • CANADA • GERMANY • JAPAN • MEXICO • SOUTH AFRICA • UNITED ARAB EMIRATES • UNITED KINGDOM • UNITED STATES
Florham Park, New Jersey 07932 USA
Publication 3040
© Automatic Switch Co. 1998
Printed in the U.S.A.
800-937-ASCO
www.asco.com
Automatic Transfer Bypass-Isolation in Closed Transition and
Delayed Transition Switching. 7A DTB, 7A CTB, 7N DTB, 7N CTB
Enclosed UL Type 1
150, 260, 400
1,5
2, 3 or 3 with neutral C 28½ (724) 74 (1880) 19 (483)
600, 800
2
2, 3 or 3 with neutral B/C 36 (914) 90 (2286) 22 (559)
1000, 1200
3
2, 3 or 3 with neutral B/C 38 (965) 91 (2311) 60 (1524)
1600, 2000
3
2, 3 or 3 with neutral B/C 38 (965) 91 (2311) 60 (1524)
3000
4
2, 3 or 3 with neutral C 78 (1981) 91 (2311) 72 (1829)
4000
4
2, 3 or 3 with neutral C 96½ (2451) 91 (2311) 72 (1829)
Open Configuration
150, 260, 400
1,5
2 or 3 14 ¾ (375) 61½ (1553) 22¼ (565)
150, 260, 400
1,5
3 with neutral C 19¾ (500) 61½ (1553) 22¼ (565)
600, 800
2
2 or 3 23¾ (603) 67¼ (1708) 24¾ (629)
600, 800
2
2, 3 or 3 with neutral B/C 27¼ (692) 67¼ (1708) 24¾ (629)
1000, 1200
3
2, 3 or 3 with neutral B/C 38 (965) 72 (1829) 38 (965)
1600, 2000
3
2, 3 or 3 with neutral B/C 38 (965) 72 (1829) 38 (965)
Switch Rating Poles Width Height Depth
amps inches (mm) inches (mm) inches (mm)
150, 260, 400 2 340 (154) 145 (66)
150, 260, 400 3 350 (158) 155 (70)
150, 260, 400 3 with C 360 (163) 165 (75)
600, 800 2 695 (315) 385 (175)
600, 800 3 710 (322) 400 (181)
600, 800 3 with B/C 750 (340) 440 (200)
1000, 1200 2 2045 (928) 1225 (556)
1000, 1200 3 2265 (1027) 1415 (642)
1000, 1200 3 with B 2485 (1127) 1575 (714)
1600, 2000 2 2315 (1050) 1435 (651)
1600, 2000 3 2495 (1132) 1685 (764)
1600, 2000 3 with B 2675 (1213) 1935 (878)
3000 3 5100 (2314) ----
3000 3 with C 5500 (2495) ----
4000 3 6300 (2858) ----
4000 3 with C 6900 (3130) ----
Notes: * Open widths include transfer switch, bypass-isolation switch and control panel. 1000-4000 amp enclosures
require ventilation openings, refer to drawings for details.
Shipping Weights
Automatic Transfer Bypass-Isolation in Closed Transition and
Delayed Transition Switching. 7A DTB, 7A CTB, 7N DTB, 7N CTB
Switch Rating Poles Enclosed Open*
amps lb (kg) lb (kg)
Notes: 1.Handles extend 3½ inches (89mm).
2.Handles extend 6¼ inches (159mm) standard enclosures for 600 - 800 amp sizes are suitable for top
cable entrance only. Specify 44” wide enclosure for bottom cable entry.
3.Recommended clearance to enclosure: 3 feet (914mm) from rear, 4 feet (1219mm) from front
(25 inches required for transfer switch drawout).
4.For 3000 - 4000 amp sizes, ATS and bypass sections can be reversed, contact ASCO. Recommended clearance
to enclosure: 3 feet (914mm) from rear, 5 feet (1524mm) from front (3 feet required for transfer switch rollout).
5.400 amp, 7A DTB and 7N DTB with neutral code B are 36 (914)W x 90 (2286)H x 22 (559)D.
6. Overlapping neutral (code C) not available on 7A DTB and 7N DTB switching arrangements.