Crestron CSTC Commercial Lighting Cabinets
Introduction
Crestron® CSTC enclosures are designed to house Crestron’s commercial dimming and switching modules. The enclosures
are designed to accept either 208Y/120VAC or 480Y/277VAC feeds and are designed to house individual branch circuit
breakers. The enclosures come standard with main lugs. Convection cooling assures quiet and reliable operation without fans.
All CSTC enclosures are factory assembled and tested prior to shipping. On-site installation is fast and easy with all wiring
terminations clearly labeled and accessible from the front. Three enclosure sizes are available: CSTC-1 series (four module
capacity) CSTC-2 series (eight module capacity), and CTSC-3 series (12 module capacity). These enclosures are designed
for surface wall-mount installation.
Part Numbers:
CSTC-X-YYY-ZZ, where:
X = Cabinet size (1, 2, or 3 module bays). One-bay units hold four modules. Two-bay units hold eight modules.
Three-bay units hold 12 modules.
YYY = Input Voltage; 120 or 277.
ZZ = Branch breaker capacity; 30 or 60 circuit breakers.
CSTC-1-277-30/60 Overall Dimensions (Front, Side, Bottom, and Internal Views)
10.6 in
(269 mm)
10.1 in
(256 mm)
7.0 in
(177 mm)
4.0 in
(101 mm)
2.5 in (63 mm)
SPACE BETWEEN
INSIDE OF CABINET
AND BREAKER
"B"
PANEL;
60 BREAKER
ENCLOSURES
ONLY
EMPTY MODULE
BAY
5.5 in
(139 mm)
8.8 in
(223 mm)
2.50 in (63 mm)
SPACE BETWEEN
BREAKERS
14.8 in
(375 mm)
8.8 in
(223 mm)
5.5 in
(139 mm)
INSIDE OF CABINET
"A"
PANEL
43.6 in
(1107 mm)
2.5 in (63 mm)
SPACE BETWEEN
AND BREAKER
55.9 in
(1419 mm)
"B" PANEL;
60 BREAKER
ENCLOSURES
ONLY
35.0 in
(889 mm)
(822 mm)
32.4 in
33.8 in
(858 mm)
"A" PANEL
(8X) Ø 0.4 in (10 mm)
MOUNTING HOLES
16.0 in
(406 mm)
TYP OF ALL
MODULE BAY
COVER
3.9 in
TYP OF 4
(99 mm)
Crestron Electronics, Inc. Installation Guide – DOC. 6524B
15 Volvo Drive Rockleigh, NJ 07647 (2016616)
Tel: 888.CRESTRON 07.07
Fax: 201.767.7576 Specifications subject to
www.crestron.com change without notice.
Commercial Lighting Cabinets Crestron CSTC
CSTC-1-120-30/60 Overall Dimensions (Front, Side, Bottom, and Internal Views)
10.6 in
(269 mm)
10.1 in
(256 mm)
7.0 in
(177 mm)
4.0 in
(101 mm)
2.9 in (73 mm)
SPACE BETWEEN
INSIDE OF CABINET
AND BREAKER
"B"
PANEL;
60 BREAKER
ENCLOSURES
ONLY
EMPTY MODULE
55.9 in
(1419 mm)
"B" PANEL;
60 BREAKER
ENCLOSURES
ONLY
35.0 in
(889 mm)
(822 mm)
32.4 in
33.8 in
(858 mm)
"A" PANEL
(8X) Ø 0.4 in (10 mm)
MOUNTING HOLES
16.0 in
(406 mm)
TYP OF ALL
MODULE BAY
COVER
(99 mm)
3.9 in
TYP OF 4
11.2 in
(284 mm)
BAY
8.8 in
(223 mm)
3.2 in (81 mm)
SPACE BETWEEN
BREAKERS
14.8 in
(376 mm)
8.8 in
(223 mm)
2.9 in (73 mm)
SPACE BETWEEN
INSIDE OF CABINET
AND BREAKER
"A"
PANEL
39.7 in
(1008 mm)
2 • Commercial Lighting Cabinets: CSTC Installation Guide – DOC. 6524B
Crestron CSTC Commercial Lighting Cabinets
T
CSTC-2-277-30/60 Overall Dimensions (Front, Side, Bottom, and Internal Views)
10.6 in
(269 mm)
10.1 in
(256 mm)
7.9 in
(200 mm)
4.0 in
(101 mm)
72.9 in
(1851 mm)
"B" PANEL;
60 BREAKER
ENCLOSURES
ONLY
35.0 in
(889 mm)
33.8 in
(858 mm)
32.4 in
(822 mm)
"A" PANEL
17.3 in
(439 mm)
TYP OF ALL
MODULE BAY
COVER
(10X) Ø 0.4 in (10 mm)
MOUNTING HOLES
2.5 in (63 mm)
SPACE BETWEEN
INSIDE CABINET
AND BREAKER
(139 mm)
"B"
PANEL;
60 BREAKER
ENCLOSURES
ONLY
EMPTY MODULE
5.5 in
BAY
8.8 in
(223 mm)
2.50 in (63 mm)
SPACE BETWEEN
BREAKERS
14.8 in
(375 mm)
8.8 in
(223 mm)
2.5 in (63 mm)
SPACE BETWEEN
INSIDE OF CABINE
AND BREAKER
"A"
PANEL
60.6 in
(1539 mm)
1.9 in
(48 mm)
TYP OF 4
Installation Guide – DOC. 6524B Commercial Lighting Cabinets: CSTC • 3
Commercial Lighting Cabinets Crestron CSTC
CSTC-2-120-30/60 Overall Dimensions (Front, Side, Bottom, and Internal Views)
10.6 in
(269 mm)
10.1 in
(256 mm)
(200 mm)
7.9 in
4.0 in
(101 mm)
72.9 in
(1851 mm)
"B" PANEL;
60 BREAKER
ENCLOSURES
ONLY
35.0 in
(889 mm)
33.8 in
(858 mm)
32.4 in
(822 mm)
"A" PANEL
17.3 in
(439 mm)
TYP OF ALL
MODULE BAY
COVER
(10X) Ø 0.4 in (10 mm)
MOUNTING HOLES
2.9 in (73 mm)
SPACE BETWEEN
INSIDE OF CABINET
AND BREAKER
"B"
PANEL;
60 BREAKER
ENCLOSURES
ONLY
EMPTY MODULE
BAY
11.2 in
(284 mm)
8.8 in
(223 mm)
3.2 in (81 mm)
SPACE BETWEEN
BREAKERS
14.8 in
(375 mm)
8.8 in
(223 mm)
2.9 in (73 mm)
SPACE BETWEEN
INSIDE OF CABINET
AND BREAKER
"A"
PANEL
56.8 in
(1442 mm)
1.9 in
(48 mm)
TYP OF 4
4 • Commercial Lighting Cabinets: CSTC Installation Guide – DOC. 6524B
Crestron CSTC Commercial Lighting Cabinets
CSTC-3-277-30/60 Overall Dimensions (Front, Side, Bottom, and Internal Views), Lower Module Bays Uncovered
10.6 in
35.0 in
(889 mm)
33.8 in
(858 mm)
32.4 in
(822 mm)
21.5 in
(546 mm)
TYP OF ALL
(10X) Ø 0.4 in (10 mm)
MOUNTING HOLES
(269 mm)
10.1 in
(256 mm)
7.9 in
(200 mm)
4.0 in
(101 mm)
2.5 in (63 mm)
SPACE BETWEEN
INSIDE CABINET
AND BREAKER
5.5 in
(139 mm)
"B"
PANEL;
60 BREAKER
ENCLOSURES
ONLY
8.8 in
(223 mm)
14.8 in
(375 mm)
8.8 in
(223 mm)
2.5 in (63 mm)
SPACE BETWEEN
INSIDE OF CABINET
AND BREAKER
"A"
PANEL
90.0 in
(2286 mm)
"B" PANEL;
60 BREAKER
ENCLOSURES
ONLY
"A" PANEL
MODULE BAY
COVER
1.9 in
(48 mm)
TYP OF 4
EMPTY MODULE
BAY
2.5 in (63 mm)
SPACE BETWEEN
BREAKERS
77.6 in
(1971 mm)
Installation Guide – DOC. 6524B Commercial Lighting Cabinets: CSTC • 5
Commercial Lighting Cabinets Crestron CSTC
CSTC-3-120-30/60 Overall Dimensions (Front, Side, Bottom, and Internal Views), Lower Module Bays Uncovered
10.6 in
(269 mm)
10.1 in
(256 mm)
7.9 in
(200 mm)
4.0 in
(101 mm)
2.9 in (73 mm)
SPACE BETWEEN
INSIDE CABINET
AND BREAKER
"B"
PANEL;
60 BREAKER
ENCLOSURES
ONLY
EMPTY MODULE
BAY
11.2 in
(284 mm)
8.8 in
(223 mm)
3.2 in (81 mm)
SPACE BETWEEN
BREAKERS
14.8 in
(375 mm)
8.8 in
(223 mm)
2.9 in (73 mm)
SPACE BETWEEN
INSIDE OF CABINET
AND BREAKER
"A"
PANEL
73.8 in
(1874 mm)
90.0 in
(2286 mm)
"B" PANEL;
60 BREAKER
ENCLOSURES
ONLY
35.0 in
(889 mm)
33.8 in
(858 mm)
32.4 in
(822 mm)
"A" PANEL
21.5 in
(546 mm)
TYP OF ALL
MODULE BAY
COVER
(10X) Ø 0.4 in (10 mm)
MOUNTING HOLES
1.9 in
TYP OF 4
(48 mm)
Industry Compliance
This product is Listed to applicable UL Standards and requirements by Underwriters Laboratories Inc.
(E227280)
6 • Commercial Lighting Cabinets: CSTC Installation Guide – DOC. 6524B
Crestron CSTC Commercial Lighting Cabinets
Installation
The enclosure is designed for surface mounting on a wall.
CAUTION: These enclosures house equipment that needs to be air-cooled. Therefore, mount in a well-ventilated area. The
ambient temperature range should be 32°F to 104°F (0°C to 40°C). The relative humidity should range from 10% to 90%
(non-condensing). Furthermore, allow adequate clearance in front of the vented cover for servicing and ventilation.
NOTE: The enclosure must be mounted by a licensed electrician in accordance with all national and local codes. Pay special
attention to code requirements for maximum circuit breaker height when mounting CSTC enclosure on a wall. Refer to
diagrams on pages 1 through 6 for specific dimensions.
NOTE: Enclosures are intended for indoor use only.
Wiring
CSTC enclosures are shipped with lighting modules installed. Incoming feed conductors must be connected to the main lugs.
Lighting modules must be connected to loads. “B” panels (60 breaker enclosures only) must be wired to the “A” panel as
shown in the following diagrams.
“A” Panel to “B” Panel Wiring, 277 Volt Enclosures
FROM MAIN CIRCUIT BREAKER
(PROVIDED BY OTHERS)
N A B C N
“B” PANEL
“A” Panel to “B” Panel Wiring, 120 Volt Enclosures
A B C N
“A” PANEL
FROM MAIN CIRCUIT BREAKER
(PROVIDED BY OTHERS)
WHEN WIRING “A” PANEL, REFER TO
WIRE RANGE AND TORQUE SETTINGS
FOR SUBFEED LUGS ON PAGE 8.
WHEN WIRING “B” PANEL, REFER TO
WIRE RANGE AND TORQUE SETTINGS
FOR MAIN LUGS ON PAGE 8.
WHEN WIRING “A” PANEL, REFER TO
WIRE RANGE AND TORQUE SETTINGS
FOR SUBFEED LUGS ON PAGE 8.
WHEN WIRING “B” PANEL, REFER TO
WIRE RANGE AND TORQUE SETTINGS
FOR MAIN LUGS ON PAGE 8.
N A B C N
“B” PANEL
A B C
“A” PANEL
Installation Guide – DOC. 6524B Commercial Lighting Cabinets: CSTC • 7
Commercial Lighting Cabinets Crestron CSTC
NOTE: Wiring for main lugs must use copper or aluminum conductors only – rated 75°C. Refer to individual module
installation guides for appropriate load wiring.
NOTE: All wiring must be installed in accordance with all local and national electrical codes.
Tighten all terminal block screws to the torque specified in the module’s installation guide. Use the following table to
determine appropriate wire gauge and tightening values.
CAUTION: Failure to properly tighten lugs may result in poor electrical connection and overheating of the terminals.
Wire Gauge and Torque Values
120 Volt Models 277 Volt Models
TERMINAL CONNECTOR MAX
WIRE RANGE
Main Lugs &
Neutral Main
Lugs
Subfeed Lugs
(60 circuit only)
Neutral Bars 14-10 (CU) or 12-10 (AL)
10-2/0 (CU) or
6-2/0 (AL)
6 - 300 kcmil (CU or AL)
(2) 4-1/0 (CU or AL)
(2) 4 - 300 kcmil (CU or AL)
8 (CU or AL)
6-4 (CU or AL)
TORQUE CONNECTOR MAX
WIRE RANGE
15 lb-ft
21 lb-ft
15 lb-ft
28 lb-ft
20 lb-in
25 lb-in
35 lb-in
6-350 kcmil (CU or AL)
1/0-750 kcmil (CU or AL)
(1) 1/0-750 kcmil (CU or AL)
(2) 1/0-350 kcmil (CU or AL)
14-6 (CU or AL)
14-2/0 (CU or AL)
TORQUE
275 – 300 lb-in
275 – 300 lb-in
24 – 35 lb-in
40 – 50 lb-in
NOTE: 208Y/120 panels have a maximum current of 225A. 480Y/277 panels have a maximum current of 250A.
Further Inquiries
If you cannot locate specific information or have questions after reviewing this guide, please take advantage of Crestron's
award winning customer service team by calling the Crestron corporate headquarters at 1-888-CRESTRON
[1-888-273-7876]. For assistance in your local time zone, refer to the Crestron website (http://www.crestron.com/offices) for
a listing of Crestron worldwide offices.
You can also log onto the online help section of the Crestron website (http://www.crestron.com/onlinehelp
about Crestron products. First-time users will need to establish a user account to fully benefit from all available features.
) to ask questions
8 • Commercial Lighting Cabinets: CSTC Installation Guide – DOC. 6524B
Crestron CSTC Commercial Lighting Cabinets
Return and Warranty Policies
Merchandise Returns / Repair Service
1. No merchandise may be returned for credit, exchange, or service without prior authorization from
CRESTRON. To obtain warranty service for CRESTRON products, contact an authorized
CRESTRON dealer. Only authorized CRESTRON dealers may contact the factory and request an
RMA (Return Merchandise Authorization) number. Enclose a note specifying the nature of the
problem, name and phone number of contact person, RMA number, and return address.
2. Products may be returned for credit, exchange, or service with a CRESTRON Return Merchandise
Authorization (RMA) number. Authorized returns must be shipped freight prepaid to
CRESTRON, 6 Volvo Drive, Rockleigh, N.J. or its authorized subsidiaries, with RMA number
clearly marked on the outside of all cartons. Shipments arriving freight collect or without an RMA
number shall be subject to refusal. CRESTRON reserves the right in its sole and absolute
discretion to charge a 15% restocking fee, plus shipping costs, on any products returned with an
RMA.
3. Return freight charges following repair of items under warranty shall be paid by CRESTRON,
shipping by standard ground carrier. In the event repairs are found to be non-warranty, return
freight costs shall be paid by the purchaser.
CRESTRON Limited Warranty
CRESTRON ELECTRONICS, Inc. warrants its products to be free from manufacturing defects in materials and
workmanship under normal use for a period of three (3) years from the date of purchase from CRESTRON,
with the following exceptions: disk drives and any other moving or rotating mechanical parts, pan/tilt heads and
power supplies are covered for a period of one (1) year; touchscreen display and overlay components are
covered for 90 days; batteries and incandescent lamps are not covered.
This warranty extends to products purchased directly from CRESTRON or an authorized CRESTRON dealer.
Purchasers should inquire of the dealer regarding the nature and extent of the dealer's warranty, if any.
CRESTRON shall not be liable to honor the terms of this warranty if the product has been used in any
application other than that for which it was intended, or if it has been subjected to misuse, accidental damage,
modification, or improper installation procedures. Furthermore, this warranty does not cover any product that
has had the serial number altered, defaced, or removed.
This warranty shall be the sole and exclusive remedy to the original purchaser. In no event shall CRESTRON
be liable for incidental or consequential damages of any kind (property or economic damages inclusive) arising
from the sale or use of this equipment. CRESTRON is not liable for any claim made by a third party or made by
the purchaser for a third party.
CRESTRON shall, at its option, repair or replace any product found defective, without charge for parts or labor.
Repaired or replaced equipment and parts supplied under this warranty shall be covered only by the unexpired
portion of the warranty.
Except as expressly set forth in this warranty, CRESTRON makes no other warranties, expressed or implied,
nor authorizes any other party to offer any warranty, including any implied warranties of merchantability or
fitness for a particular purpose. Any implied warranties that may be imposed by law are limited to the terms of
this limited warranty. This warranty statement supersedes all previous warranties.
Trademark Information
All brand names, product names and trademarks are the sole property of their respective owners. Windows is a registered trademark of
Microsoft Corporation. Windows95/98/Me/XP/Vista and WindowsNT/2000 are trademarks of Microsoft Corporation.
Installation Guide – DOC. 6524B Commercial Lighting Cabinets: CSTC • 9
Commercial Lighting Cabinets Crestron CSTC
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10 • Commercial Lighting Cabinets: CSTC Installation Guide – DOC. 6524B
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