Dimensional Data and Shipping Weights
Select desired Dimension or Shipping Weight chart from product selection table below.
7A TS, 7N TS (Non-Bypass)
 2-Position Transfer Switching
7A DTS, 7A CTS, 7N DTS, 7N CTS
 Closed Transition and Delayed Transition Transfer Switching
7A TB, 7N TB
 Automatic Transfer Bypass-Isolation Switching with Transfer Switch Engaged
7A DTB, 7A CTB, 7N DTB, 7N CTB
 Automatic Transfer Bypass-Isolation in Closed Transition and Delayed Transition Switching
Dimensional Data
2-Position Transfer Switching 7A TS, 7N TS (Non-Bypass)
Switch Rating
amps
Poles
Width
inches (mm)
Height
inches (mm)
Depth
inches (mm)
-
Enclosure UL Type 12
-
30, 70,100, 125,
150, 200, 230
2, 3 or 3 with neutral A/B/C
18 (457)
48 (1219)
13 (330)
260, 400
2, 3 or 3 with neutral A/B/C
24 (610)
56 (1422)
14 (356)
600
2, 3 or 3 with neutral A/B/C
24 (610)
63 (1600)
17 (432)
800, 1000
2, 3 or 3 with neutral A/B/C
34 (864)
72 (1829)
20 (508)
1200
2, 3 or 3 with neutral A/B/C
38 (965)
87 (2210)
23 (584)
1600, 20001
2, 3 or 3 with neutral A/B/C
38 (965)
91 (2311)
48 (1219)
1600, 20001
(Front Connected)
2, 3 or 3 with neutral A/B/C
38 (965)
87 (2210)
23 (584)
2600, 30001
2, 3 or 3 with neutral A/B/C
38 (965)
91 (2311)
60 (1524)
40001
2, 3 or 3 with neutral A/C
46 (1168)
91 (2311)
72 (1829)
Open Configuration
-
30, 70,100, 125,
150, 200, 230
2, 3 or 3 with neutral B/C
10-1/4 (260)
10-1/4 (260)
5-1/2 (140)
260, 400
2, 3 or 3 with neutral B/C
18-1/2(470)
25 (635)
8 (203)
600
2, 3 or 3 with neutral B/C
19 (483)
30 (762)
9-7/8 (251)
800, 1000, 1200
2, 3 or 3 with neutral B/C
27 (686)
31 (787)
12-7/8 (327)
1600, 2000
2, 3 or 3 with neutral B/C
33-1/4 (845)
28 (711)
26/1/4 (667)
2600, 3000
2, 3 or 3 with neutral B/C
33-1/4 (845)
28 (711)
30-3/4 (781)
4000
2, 3 or 3 with neutral C
41 (1041)
52 (1321)
25-1/2 (648)
Notes:
1. Enclosures for 1600 - 4000 amp are free-standing with removable top, sides, and back.
2. Consult ASCO for dimensions on enclosures other than UL type.
3. Order accesory 40MY for 1600A and 40NY for 2000A front connected design.

All dimensions and weights shown are approximate and should not be used for construction purposes. Certified dimensions can be furnished upon request.

Shipping Weights
2-Position Transfer Switching 7A TS, 7N TS
Switch Rating
amps
Poles
Enclosed
lb (kg)
Open
lb (kg)
-
30, 70, 100, 125
2
67 (31)
15 (7)
30, 70, 100, 125
3
70 (32)
18 (8)
30, 70, 100, 125
3 with B/C
73 (33)
21 (10)
150, 200, 230
2
69 (32)
17 (8)
150, 200, 230
3
72 (33)
20 (9)
150, 200, 230
3 with B/C
75 (34)
23 (11)
260, 400
2
216 (98)
82 (37)
260, 400
3
223 (101)
89 (40)
260, 400
3 with B/C
230 (105)
102 (46)
600
2
316 (143)
88 (40)
600
3
324 (147)
96 (44)
600
3 with B/C
332 (151)
104 (47)
800, 1000
2
400 (182)
150 (68)
800, 1000
3
420 (192)
170 (78)
800, 1000
3 with B/C
446 (203)
196 (90)
1200
2
685 (312)
150 (68)
1200
3
705 (321)
170 (78)
1200
3 with B/C
731 (333)
196 (90)
1600, 2000
2
1110 (503)
370 (167)
1600, 2000
3
1160 (525)
420 (190)
1600, 2000
3 with B/C
1210 (548)
470 (213)
2600, 3000
2
1365 (620)
405 (184)
2600, 3000
3
1430 (649)
470 (213)
2600, 3000
3 with B/C
1495 (679)
535 (243)
4000
2
2208 (1002)
975 (443)
4000
3
2433 (1104)
1200 (545)
4000
3 with C
2533 (1149)
1300 (590)
Notes:
* Open weights include transfer switch and control panel.
Export shipments may require a wooden box, contact ASCO for weights and dimensions.

All dimensions and weights shown are approximate and should not be used for construction purposes. Certified dimensions can be furnished upon request.

Dimensional Data
Closed Transition and Delayed Transition Transfer Switching
7A DTS, 7A CTS, 7N DTS, 7N CTS
Switch Rating
amps
Poles
Width
inches (mm)
Height
inches (mm)
Depth
inches (mm)
-
Enclosure UL Type 13
-
150, 260, 4001
2, 3 or 3 with neutral A/B
24 (610)
56 (1422)
14 (356)
600
2, 3 or 3 with neutral A/B
24 (610)
63 (1600)
17 (432)
800, 1000
2, 3 or 3 with neutral A/B
34 (864)
72 (1829)
20 (508)
1200
2, 3 or 3 with neutral A/B
38 (965)
87 (2210)
23 (584)
1600, 20002
2, 3 or 3 with neutral A/B
38 (965)
91 (2311)
48 (1219)
1600, 20002
(Front Connected)
2, 3 or 3 with neutral A/B
38 (965)
87 (2210)
23 (584)
30002
2, 3 or 3 with neutral A/B
38 (965)
91 (2311)
60 (1524)
40002
2, 3 or 3 with neutral A/C
46 (1168)
91 (2311)
72 (1829)
Open Configuration
-
150, 260, 400
2, 3 or 3 with neutral B
18-1/2 (470)
25 (635)
8 (203)
600
2, 3 or 3 with neutral B
19 (483)
30 (762)
9-7/8 (251)
800, 1000, 1200
2, 3 or 3 with neutral B
27 (686)
31(787)
12-7/8 (327)
1600, 2000
2, 3 or 3 with neutral B
33-1/4 (845)
28 (711)
26/1/4 (667)
3000
2, 3 or 3 with neutral B
33-1/4 (845)
28 (711)
30-3/4 (781)
4000
2, 3 or 3 with neutral C
41 (1041)
52 (1321)
29-1/2 (749)
Notes:
1. Enclosures for 1600 - 4000 amp are free-standing with removable top, sides, and back.
2. Consult ASCO for dimensions on enclosures other than UL type 1.
3. Order accesory 40MY for 1600A and 40NY for 2000A front connected design.

All dimensions and weights shown are approximate and should not be used for construction purposes. Certified dimensions can be furnished upon request.

Shipping Weights
Closed Transition and Delayed Transition Transfer Switching
7A DTS, 7A CTS, 7N DTS, 7N CTS
Switch Rating
amps
Poles
Enclosed
lb (kg)
Open
lb (kg)
-
150, 260, 400
2
235 (107)
101 (46)
150, 260, 400
3
242 (110)
108 (49)
150, 260, 400
3 with A/B
250 (113)
115 (52)
600
2
335 (152)
107 (48)
600
3
343 (156)
115 (52)
600
3 with A/B
352 (159)
124 (56)
600, 800, 1000
2
420 (192)
175 (80)
600, 800, 1000
3
450 (205)
205(94)
600, 800, 1000
3 with A/B
480 (219)
235 (108)
1200
2
710 (324)
175 (80)
1200
3
740 (337)
205(94)
1200
3 with A/B
770 (351)
235 (108)
1600, 2000
2
1300 (590)
505 (229)
1600, 2000
3
1350 (612)
555 (252)
1600, 2000
3 with A/B
1400 (635)
605 (274)
3000
2
1555 (706)
540(245)
3000
3
1620 (735)
660 (300)
3000
3 with A/B
1685 (765)
725 (329)
4000
2
2360 (1071)
1127 (511)
4000
3
2580 (1171)
1347 (611)
4000
3 with C
2680 (1217)
1447 (657)
Notes:
* Open weights include transfer switch and control panel.
1200-4000 amp enclosures require ventilation openings, refer to drawings for details.
Export shipments may require a wooden box, contact ASCO for weights and dimensions.

All dimensions and weights shown are approximate and should not be used for construction purposes. Certified dimensions can be furnished upon request.

Dimensional Data
Automatic Transfer Bypass-Isolation Switching with Transfer Switch Engaged
7A TB, 7N TB
Switch Rating
amps
Power Connection Configuration
Poles
Width
inches (mm)
Height
inches (mm)
Depth
inches (mm)
-
Enclosure UL Type 1
-
150, 200, 230, 260, 400, 6001
Front Connected
2, 3 or 3 with neutral A/B/C
34 (864)
85 (2159)
28 (711)
8001,4
Front Connected
2, 3 or 3 with neutral A/B/C
38 (965)
91 (2311)
32 (813)
800, 1000, 12001,2
Side/Rear Connected
2, 3 or 3 with neutral A/B/C
38 (965)
91 (2311)
48 (1219)
1600, 20001,2
Side/Rear Connected
2, 3 or 3 with neutral A/B/C
38 (965)
91 (2311)
60 (1524)
30001,2
Side/Rear Connected
3 or 3 with neutral A/B/C
38 (965)
91 (2311)
72 (1829)
40003
Rear Connected
3 or 3 with neutral A/C
96-1/2 (2451)
91 (2311)
72 (1829)
Open Configuration
-
150, 200, 230, 260, 400, 6001
Front Connected
2, 3 or 3 with neutral A/B/C
19-3/4(500)5
61-1/2 (1553)5
22-1/4 (565)5
800, 1000, 12001,2
Rear Connected
2, 3 or 3 with neutral A/B/C
38 (965)
72 (1829)
38 (965)
1600, 2000, 30001,2
Rear Connected
2, 3 or 3 with neutral A/B/C
38 (965)
72 (1829)
38 (965)
Shipping Weights
Automatic Transfer Bypass-Isolation Switching with Transfer Switch Engaged
7A TB, 7N TB
Switch Rating
amps
Poles
Enclosed
lb (kg)
Open1
lb (kg)
-
150, 200, 230, 260, 400, 600
2
990 (450)
Contact ASCO
150, 200, 230, 260, 400, 600
3
1050 (477)
Contact ASCO
150, 200, 230, 260, 400, 600
3 with A/B/C
1110 (505)
Contact ASCO
800, 1000, 1200
2
1510 (685)
920 (417)
800, 1000, 1200
3
1580 (717)
990 (449)
800, 1000, 1200
3 with A/B/C
1650 (748)
1060 (481)
1600, 2000 2
2
2180 (989)
1300 (589)
1600, 2000 2
3
2360 (1070)
1550 (702)
1600, 2000 2
3 with A/B/C
2540 (1152)
1800 (815)
3000 2
3
2730 (1240)
1690 (768)
3000 2
3 with A/B/C
3360 (1525)
1980 (899)
4000 2
3
6300 (2858)
-
4000 2
3 with C
6900 (3130)
-
Notes:
1 Open weights include transfer switch and control panel.
2 1600-4000 amp enclosures require ventilation openings, refer to drawings for details.

Export shipments may require a wooden box, contact ASCO for weights and dimensions.
All dimensions and weights shown are approximate and should not be used for construction purposes. Certified dimensions can be furnished upon request.
Dimensional Data*
Automatic Transfer Bypass-Isolation in Closed Transition and Delayed Transition Switching
7A DTB6, 7A CTB, 7N DTB6, 7N CTB
Switch Rating
amps
Power Connection Configuration
Poles
Width
inches (mm)
Height
inches (mm)
Depth
inches (mm)
-
Enclosure UL Type 1
-
150, 200, 230, 260, 400, 6001
Front Connected
2, 3 or 3 with neutral A/B
34 (864)
85 (2159)
28 (711)
8001,4
Front Connected
2, 3 or 3 with neutral A/B
38 (965)
91 (2311)
32 (813)
800, 1000, 12001,2
Side/Rear Connected
2, 3 or 3 with neutral A/B
38 (965)
91 (2311)
48 (1219)
1600, 20001,2
Side/Rear Connected
2, 3 or 3 with neutral A/B
38 (965)
91 (2311)
60 (1524)
30001,2
Side/Rear Connected
3 or 3 with neutral A/B
38 (965)
91 (2311)
72 (1829)
40003
Rear Connected
3 or 3 with neutral A/C
96-1/2 (2451)
91 (2311)
72 (1829)
Open Configuration
-
150, 200, 230, 260, 400, 6001
Front Connected
2, 3 or 3 with neutral A/B
Contact ASCO6
Contact ASCO6
Contact ASCO6
800, 1000, 12001,2
Side/Rear Connected
2, 3 or 3 with neutral A/B
38 (965)
72 (1829)
38 (965)
1600, 2000, 30001,2
Side/Rear Connected
2, 3 or 3 with neutral A/B
38 (965)
72 (1829)
38 (965)
Notes:
  1. Handles extend 6-1/4 inches.
    2.
  2. Recommended clearance to enclosure: 3 feet (914mm) from rear, 4 feet (1219mm) from front (25 inches required for transfer switch drawout). Side or rear access required.
    3.
  3. For 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).
    4.
  4. Conventional switched neutral is provided on 7A DTB and 7N DTB switching arrangements when specified (optional Code B).
    5.
  5. Specify optional accessory 40HY for 600 amp front-connected arrangement and 40JY for 800 amp. All service and load cables limited to top entry only.
    6.
  6. Contact ASCO for details
    7.

    *All dimensions and weights shown are approximate and should not be used for construction
     purposes.
     Certified dimesions can be furnished upon request.

Shipping Weights
Automatic Transfer Bypass-Isolation in Closed Transi