Emerson SolaHD STC-642 Series User manual

Surge Protective Devices
STC642 Series

Safety Information
Important Information
Read these instructions carefully and look at the equipment to become
familiar with the device before trying to install, operate, service or maintain it.
The following special messages may appear throughout thisbulletin or on the
equipment to warn of potential hazards or to call attention to information that
clarifies or simplifies a procedure.
The addition of either symbol to a “Danger”or “Warning” safety label
indicates that an electrical hazard exists which will result inpersonal
injury if the instructions are not followed.
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messagesthat follow this
symbol to avoid possible injury or death.
DANGER
DANGER indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided,
could result in minor or moderateinjury.
NOTICE
NOTICE is used to address practices not related to physical injury. The safety
alert symbol shall not be used with this signal word.
Please Note
Electrical equipment should be installed, operated, serviced, and maintained only
by qualified personnel. No responsibility is assumed by Appleton Grp LLC d/b/a
Appleton Group for any consequences arising out of the use of this material.
A qualified person is one who has skills and knowledge related to the
construction, installation, and operation of electrical equipment andhas received
safety training to recognize and avoid the hazards involved.

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STC642 Series
Introduction
The SolaHD STC642036 Series surge protective device, (SPD) is a two-pair (four or ve wire) module
implementing three-stage hybrid technology. This SPD addresses overvoltage transients with gas tubes and
silicon avalanche components. In addition, sneak and fault currents are mitigated with self resettable fuses
(PTCs). The PTCs increase resistance several orders of magnitude when over-currents exceed certain levels. A
normal state resumes when over-currents are removed. The ability to self-restore in this manner signicantly
increases suppressor performance and survivability.
The STC642036 is gold-plated, double sided and is designed to mate with the gold-plated female terminal
connector base. When snapped together, the data circuits “pass thru” the protector in a serial fashion from
the four “Field Side” terminals to the four “Equipment Side” terminals. Terminals 1 or 10 of the base must be
attached to Building- Approved Ground.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E,
NOM-029-STPS or CSA Z462.
• This equipment must only be installed and serviced by qualied electrical personnel.
• Turn o󰀨 all power supplying this equipment before working on or inside equipment.
• Always use a properly rated voltage sensing device to conrm power is o󰀨.
• Replace all devices, doors and covers before turning on power to this equipment.
• This equipment must be e󰀨ectively grounded per all applicable codes. Use an equipment-grounding conductor to
connect this equipment to the power system ground.
• Conrm that the Surge Protective Device voltage rating on the module or nameplate label is not less than the
operating voltage.
• This equipment must be installed inside an enclosure and located so, as to prevent accidental contact with
terminals during maintenance or servicing.
• Do not place this product in service on any line capable of supplying more than 150 mA continuously.
Failure to follow these instructions will result in death or serious injury.
WARNING: This product can expose you to chemicals including DINP, which is known to the State of California
to cause cancer, and DIDP which is known to the State of California to cause birth defects or other reproductive
harm. For more information go to: www.P65Warnings.ca.gov.

STC642 Series
Page: 2
NOTICE
HAZARD OF MIS-INSTALLATION
• Only install this protective device in indoor applications and on communication loop circuits which have been
isolated from the public switch telephone network (PSTN).
• Do not expose the communication loop to contact with the electric light or power conductors.
• Install the protectors as per the applicable requirements of the National Electric Code, ANSI/NFPA 70.
• DO NOT daisy chain grounds. Ground connections are not for shield termination. Install ground in accordance
with all applicable codes.
Failure to follow these instructions can result in equipment damage.
Installation
1. Turn off all power supplying this equipment before working on or inside equipment.
2. Mount the base in desired location, preferably as close to load equipment as possible and in close
proximity to a building approved grounding point using (2) #4 screws.
Refer to Figure 1 for steps 3–5:
3. Attach eld side pairs (26-10 AWG) to positions 3/5 and 7/9. Torque wires to 7 in-lbs [0.8 N-m].
4. Attach equipment side pairs (26-10 AWG) to positions 2/4 and 6/8. Torque wires to 7 in-lbs [0.8 N-m].
5. Attach ground wire (10 AWG) to positions 1 or 10 on base. Torque wire to 7 in-lbs [0.8 N-m].
6. Insert the module into keyed base. See Figure 2.
7. Replace the barrier, cover/door and/or trim to the equipment.
8. Equipment may be re-energized after all the above steps are complete.

Page: 3
STC642 Series
Figure 1: Base Terminal Assignments (Dimensions: in./[mm])
2.125
[53.98]
2.4
[60.96]
Unprotected Pair 2
Unprotected Pair 1
Protected Pair 2
Protected Pair 1
Keying Pin
Even TerminalsOdd Terminals
Field Side
Equipment Side
9
7
5
3
1
10
8
6
4
2
1.0
[25.40]
{}
}
{
Ground Terminal 1 or 10 to Building Approved Ground (preferably AC Power ground)
Figure 2: Plug SPD Module into base.
Base
SPD Module

STC642 Series
Page: 4
General Technical Specifications
Operating Voltage 36 VDC
Breakdown Voltage 43 VDC
Operating Current 0.15 A
Peak Surge Current 10 kA (8 x 20 µs)
Frequency Range 0 to 20 MHz
Insertion Loss < 0.1 dB at 50 MHz
SPD Technology GDT, SAD, with Series PTC
Connection Type Terminal Block with mechanical lugs
Terminals accept up to 10 AWG
Operating Temperature -40°C to +85°C
Dimensions (in./[mm]) 2.0 x 1.0 x 2.5 in.
[50.8 x 25.4 x 63.5 mm]
(SPD module + Base)
Weight (oz/[kg]) 1 oz [0.03 kg]
Certifications UL 497B
Limited warranty 5 Years
Model Reference
Model Application
STCDRS036 36 VDC (5–36 VDC Operating Voltages)
3 Stage L-L & L-G Hybrid
Base is included.
Accessory
STC642DINKIT DIN Mounting Kit for STC642 Series

Page: 5
STC642 Series
Technical Support
Website: www.solahd.com
Technical Support E-Mail: [e-mail]
Toll-Free: [phone]
USA: [phone]
Warranty
Please refer to the “Terms & Conditions of Sale” document.
While every precaution has been taken to ensure accuracy and completeness in this manual, Appleton Grp LLC d/b/a Appleton Group
assumes no responsibility, and disclaims all liability for damages resulting from use of this information or for any errors or omissions.
STC642DINKIT

STC-642 Series
A272-138 Rev. 3 12/2020
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