SMA Sunny Boy 3800TL-US User manual

SB3-5TLUS22-IA-en-16 | Version 1.6
CA
US
PV Inverter
SUNNY BOY
3000TL-US / 3800TL-US / 4000TL-US /
5000TL-US / 6000TL-US / 7000TL-US / 7700TL-US
Installation Manual

SMA America, LLC 
Installation Manual SB3-5TLUS22-IA-en-16 3
Copyright © 2014 SMA America,LLC. All rights reserved.
No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form
or by any means, electronic, mechanical, photographic, magnetic or otherwise, without the prior
written permission of SMA America,LLC.
Neither SMA America,LLC nor SMA Solar Technology Canada Inc. makes representations, express
or implied, with respect to this documentation or any of the equipment and/or software it may
describe, including (with no limitation) any implied warranties of utility, merchantability, or fitness for
any particular purpose. All such warranties are expressly disclaimed. Neither SMA America,LLC nor
its distributors or dealers nor SMA Solar Technology Canada Inc. nor its distributors or dealers shall
be liable for any indirect, incidental, or consequential damages under any circumstances.
(The exclusion of implied warranties may not apply in all cases under some statutes, and thus the
above exclusion may not apply.)
Specifications are subject to change without notice. Every attempt has been made to make this
document complete, accurate and up-to-date. Readers are cautioned, however, that
SMAAmerica,LLC and SMA Solar Technology Canada Inc. reserve the right to make changes
without notice and shall not be responsible for any damages, including indirect, incidental or
consequential damages, caused by reliance on the material presented, including, but not limited to,
omissions, typographical errors, arithmetical errors or listing errors in the content material.
All trademarks are recognized even if these are not marked separately. Missing designations do not
mean that a product or brand is not a registered trademark.
SMA America, LLC
3801 N. Havana Street
Denver, CO 80239 U.S.A.
SMA Solar Technology Canada Inc.
2425 Matheson Blvd. E
8th Floor
Mississauga, ON L4W 5K5
Canada

IMPORTANT SAFETY INSTRUCTIONS SMA America, LLC
4 SB3-5TLUS22-IA-en-16 Installation Manual
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the following products:
• Sunny Boy 3000TL-US (SB 3000TL-US-22)
• Sunny Boy 3800TL-US (SB 3800TL-US-22)
• Sunny Boy 4000TL-US (SB 4000TL-US-22)
• Sunny Boy 5000TL-US (SB 5000TL-US-22)
• Sunny Boy 6000TL-US (SB 6000TL-US-22)
• Sunny Boy 7000TL-US (SB 7000TL-US-22)
• Sunny Boy 7700TL-US (SB 7700TL-US-22)
This manual must be followed during installation and maintenance.
The product is designed and tested according to international safety requirements, but as with all
electrical and electronic equipment, certain precautions must be observed when installing and/or
operating the product. To reduce the risk of personal injury and to ensure the safe installation and
operation of the product, you must carefully read and follow all instructions, cautions and warnings
in this manual.
Warnings in this Document
A warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice,
which, if not correctly performed or adhered to, could result in damage to or destruction of part or all
of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury.
Symbol Description
DANGER indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could result
in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.

SMA America, LLC Warnings on this Product
Installation Manual SB3-5TLUS22-IA-en-16 5
Warnings on this Product
The following symbols are used as product markings with the following meanings.
Symbol Description
Warning regarding dangerous voltage
The product works with high voltages. All work on the product must only be
performed as described in the documentation of the product.
Beware of hot surface
The product can become hot during operation. Do not touch the product during
operation.
Electric arc hazards
The product has large electrical potential differences between its conductors. Arc
flashes can occur through air when high-voltage current flows. Do not work on the
product during operation.
Risk of fire
Improper installation of the product may cause a fire.
Observe the operating instructions
Read the documentation of the product before working on it. Follow all safety
precautions and instructions as described in the documentation.

General Warnings SMA America, LLC
6 SB3-5TLUS22-IA-en-16 Installation Manual
General Warnings
General Warnings
All electrical installations must be made in accordance with the local and NationalElectrical Code®
ANSI/NFPA 70 or the Canadian Electrical Code® CSAC22.1. This document does not and is not
intended to replace any local, state, provincial, federal or national laws, regulation or codes
applicable to the installation and use of the product, including without limitation applicable
electrical safety codes. All installations must conform with the laws, regulations, codes and
standards applicable in the jurisdiction of installation. SMA assumes no responsibility for the
compliance or non-compliance with such laws or codes in connection with the installation of the
product.
The product contains no user-serviceable parts.
For all repair and maintenance, always return the unit to an authorized SMA Service Center.
Before installing or using the product, read all of the instructions, cautions, and warnings in this
manual.
Before connecting the product to the electrical utility grid, contact the local utility company. This
connection must be made only by qualified personnel.
Wiring of the product must be made by qualified personnel only.

SMA America, LLC Table of Contents
Installation Manual SB3-5TLUS22-IA-en-16 7
Table of Contents
1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Skills of Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 DC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Type Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.1 Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.2 DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.3 Symbols on the Type Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4 Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5 Communication Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.6 Secure Power Supply (SPS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.7 Fan Retrofit Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.8 Arc-Fault Circuit Interrupter (AFCI). . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.9 SD Card Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.10 Varistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.11 SMA OptiTrac Global Peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1 Selecting the Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Mounting the Wall Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . 28
5.3 Mounting the Inverter and DC Disconnect. . . . . . . . . . . . . . . . . . . . . 30
5.4 Attaching the Anti-Theft Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.1 Safety during Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table of Contents SMA America, LLC
8 SB3-5TLUS22-IA-en-16 Installation Manual
6.2 Overview of the Connection Area. . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2.1 Connection Area of the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2.2 Connection Area of the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . 35
6.3 AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.3.1 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.3.2 Connecting the Inverter to the Utility Grid . . . . . . . . . . . . . . . . . . . . 37
6.4 DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.4.1 Safety during DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.4.2 Conditions for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.4.3 Connecting the PV Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.5 Connecting the Secure Power Supply Module . . . . . . . . . . . . . . . . . 44
7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.1 Making Settings via the Rotary Switches . . . . . . . . . . . . . . . . . . . . . . 47
7.1.1 Overview of the Rotary Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.1.2 Changing the Country Data Set and the Display Language . . . . . . 49
7.1.3 Changing the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.2 Commissioning the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.1 Changing the Country Data Set Using a Communication Product . . 52
8.2 Activating and Setting SMA OptiTrac Global Peak . . . . . . . . . . . . . 52
9 Display and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.1 Switching On the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.2 Calling Up Messages of the Start Phase . . . . . . . . . . . . . . . . . . . . . . 53
9.3 LED Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
10 Disconnecting the Inverter from Voltage Sources . . . . . . . . . . 55
10.1 Disconnecting the DC Disconnect from Voltage Sources. . . . . . . . . . 57
11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
11.1 Event Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
11.2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
11.3 Cleaning the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

SMA America, LLC Table of Contents
Installation Manual SB3-5TLUS22-IA-en-16 9
11.4 Cleaning the Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
11.4.1 Sunny Boy 3000/3800/4000/5000/6000TL-US . . . . . . . . . . . . 71
11.4.2 Sunny Boy 7000/7700TL-US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
11.5 Checking the PV System for Ground Faults . . . . . . . . . . . . . . . . . . . . 74
11.6 Replacing DC Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
11.7 The Message "Electr. arc detected" is displayed. . . . . . . . . . . . . . . . 78
12 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12.1 Disassembling the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12.2 Packing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
12.3 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
13 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
13.1 DC/AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
13.1.1 Sunny Boy 3000TL-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
13.1.2 Sunny Boy 3800TL-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
13.1.3 Sunny Boy 4000TL-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
13.1.4 Sunny Boy 5000TL-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
13.1.5 Sunny Boy 6000TL-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
13.1.6 Sunny Boy 7000TL-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
13.1.7 Sunny Boy 7700TL-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
13.2 Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
13.3 General Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
13.4 DC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
13.5 Climatic Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
13.6 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
13.7 Torques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
13.8 Data Storage Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
14 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
15 Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
16 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

1 Information on this Document SMA America, LLC
10 SB3-5TLUS22-IA-en-16 Installation Manual
1 Information on this Document
Validity
This document is valid for the following device types as of firmware version HP V02.05.00.R,
KP V02.50.55.R:
• Sunny Boy 3000TL-US (SB 3000TL-US-22)
• Sunny Boy 3800TL-US (SB 3800TL-US-22)
• Sunny Boy 4000TL-US (SB 4000TL-US-22)
• Sunny Boy 5000TL-US (SB 5000TL-US-22)
• Sunny Boy 6000TL-US (SB 6000TL-US-22)
• Sunny Boy 7000TL-US (SB 7000TL-US-22)
• Sunny Boy 7700TL-US (SB 7700TL-US-22)
Target Group
This document is for qualified persons. Only persons with the appropriate skills are allowed to perform
the tasks described in this document (see Section2.2 "Skills of Qualified Persons", page12).
Additional Information
Links to additional information can be found at www.SMA-Solar.com.
Symbols
Document title Document type
Capacitive Leakage Currents Technical information
Shade Management Technical information
Module Technology Technical information
Symbol Explanation
Indicates information that is important for a specific topic or
objective, but is not safety-relevant.
☐ Indicates a requirement for meeting a specific goal.
☑ Desired result
✖ A problem that could occur

SMA America, LLC 1 Information on this Document
Installation Manual SB3-5TLUS22-IA-en-16 11
Nomenclature
Complete designation Designation in this document
SMA America Production, LLC SMA
SMA Solar Technology Canada Inc. SMA
Sunny Boy Inverter, product

2 Safety SMA America, LLC
12 SB3-5TLUS22-IA-en-16 Installation Manual
2 Safety
2.1 Intended Use
The Sunny Boy is a transformerless PV inverter which converts the direct current of a PV array into
grid-compliant alternating current and feeds it into the utility grid.
The inverter can be installed in the following grid configurations:
• 208Y/120 VAC Wye
• 120/240 VAC Split phase
The inverter is transformerless and has no galvanic isolation. Therefore, the inverter may only be
operated with ungrounded PV arrays. Furthermore, the PV array must be installed in accordance with
the National Electrical Code®, Article 690.35 "Ungrounded Photovoltaic Power Systems" and the
locally valid regulations for ungrounded PV arrays. Additionally, the PV array (PV modules and
cabling) must have protective insulation and the PV modules used must be suitable for use with this
inverter. PV modules with a high capacity to ground may only be used if their coupling capacity does
not exceed 1,400 nF (for information on how to calculate the coupling capacity, see Technical
Information "Capacitive Leakage Currents" at www.SMA-Solar.com).
All components must remain within their permitted operating ranges at all times.
The inverter is suitable for indoor and outdoor use.
• Do not mount the inverter on flammable construction materials.
• Do not mount the inverter in areas where highly flammable materials are stored.
• Do not mount the inverter in areas having a potentially explosive atmosphere.
Only use this product in accordance with the enclosed documentation and with the local standards
and directives. Any other use may cause injury to persons or property damage. For safety reasons,
it is forbidden to modify the product or install components that are not explicitly recommended for this
product or distributed by SMA.
The enclosed documentation is an integral part of this product.
• Read and adhere to the documentation.
• Keep the documentation in a convenient place for future reference.
2.2 Skills of Qualified Persons
The tasks described in this document may only be performed by qualified persons. The qualified
person must have the following skills:
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing and using electrical
devices and plants
• Training in the installation and commissioning of electrical devices and plants
• Knowledge of all applicable standards and directives
• Knowledge of and adherence to this document and all safety precautions

SMA America, LLC 2 Safety
Installation Manual SB3-5TLUS22-IA-en-16 13
2.3 Safety Precautions
Danger to life from electric shock due to high voltages in the inverter
High voltages that can cause fatal electric shocks are present in the live components of the inverter.
• All work on the inverter may only be carried out by qualified persons.
• Prior to performing any work on the inverter, disconnect the inverter on the AC and DC sides
(see Section10 "Disconnecting the Inverter from Voltage Sources", page55).
• Only operate the inverter with the enclosure lid closed.
• Do not open the upper enclosure lid.
Danger to life from electric shock due to damaged devices
Operating a damaged inverter can lead to hazardous situations that result in death or serious
injuries due to electric shock.
• Only operate the inverter if it is technically safe and in full working order.
• Check the inverter regularly for visible damage.
• Only operate the inverter if there is no visible damage.
Risk of burns due to hot surfaces
The surface of the inverter can become very hot. Touching the surface can result in burns.
• Do not touch hot surfaces.
• During operation, do not touch any parts other than the lower enclosure lid of the inverter.
• Observe the safety messages on the inverter.
Damage to the inverter due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through electrostatic
discharge.
• Ground yourself before touching any components.
Observe local regulations
All electrical installations must comply with the electrical standards applicable on-site and the
National Electrical Code® (ANSI/NFPA 70). Installations in Canada must comply with the
applicable Canadian standards.

3 Scope of Delivery SMA America, LLC
14 SB3-5TLUS22-IA-en-16 Installation Manual
3 Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage.
Contact your distributor if the scope of delivery is incomplete or damaged.
Figure1: Components included in the scope of delivery
Item Quantity Description
A1Inverter
B 1 Wall mounting bracket for the inverter
C1DC Disconnect
D 1 Wall mounting bracket for the DC Disconnect
E 3 M5 x 8 cheese-head screw
F 2 M5 x 12 cheese-head screw
G 1 M6 x 16 cheese-head screw
H 6 M5 conical spring washer (including 1 spare)
I1M6 conical spring washer
K 1 Installation manual, user manual, production test report,
supplementary sheet with the default settings

SMA America, LLC 4 Product Description
Installation Manual SB3-5TLUS22-IA-en-16 15
4 Product Description
4.1 Sunny Boy
The Sunny Boy is a transformerless PV inverter which converts the direct current of a PV array into
grid-compliant alternating current and feeds it into the utility grid.
Figure2: Sunny Boy design
Item Description
A Cooling fins
B Type label
CDisplay
D Lower enclosure lid screws
ELEDs
FDC Disconnect
GLower enclosure lid
H Upper enclosure lid

4 Product Description SMA America, LLC
16 SB3-5TLUS22-IA-en-16 Installation Manual
The Sunny Boy is a multi-string inverter that has two input areas, A and B, each with its own
MPP tracker. This continually determines the maximum power point and controls the voltage on the
PV modules accordingly. The two separate MPP trackers make it possible to connect different
PV strings to input areas A and B. The PV strings may vary in the number of PV modules, their
orientation to the sun and shading.
Symbols on the Inverter
Symbol Description Explanation
Inverter This symbol defines the function of the
green LED. The green LED indicates the
operating state of the inverter.
Observe the documentation. This symbol defines the function of the
red LED. The red LED indicates an error.
Read this document for instructions on
how to correct the error.
Communication This symbol defines the function of the
blue LED. The blue LED indicates the
communication state of the inverter.
Equipment grounding
conductor terminal
Connection for the AC equipment
grounding conductor

SMA America, LLC 4 Product Description
Installation Manual SB3-5TLUS22-IA-en-16 17
4.2 DC Disconnect
The DC Disconnect is a DC load-break switch which safely disconnects the PV array from the inverter.
Figure3: DC Disconnect design
Symbols on the DC Disconnect
Item Description
A Bracket for grounding the DC Disconnect enclosure
B Rubber grommet for the enclosure opening
C Bracket for hanging in the retainer
D Type label 1
EConduit knockouts
F Type label 2
G Enclosure lid screws
HEnclosure lid
ISwitch
Symbol Description Explanation
Equipment grounding
conductor terminal
Connection for the DC equipment
grounding conductors

4 Product Description SMA America, LLC
18 SB3-5TLUS22-IA-en-16 Installation Manual
4.3 Type Labels
4.3.1 Sunny Boy
The type label provides a unique identification of the inverter. The type label is located on the
right-hand side of the enclosure.
Figure4: Type label design
The information on the type label is required for both safe operation of the inverter and for customer
support from the SMA Service Line. The type label must remain permanently affixed to the inverter.
Item Description Explanation
A Model Inverter device type
B S/N Inverter serial number
C Date of manufacture Inverter manufacture date (month/year)
D Device-specific characteristics ‒

SMA America, LLC 4 Product Description
Installation Manual SB3-5TLUS22-IA-en-16 19
4.3.2 DC Disconnect
The type label provides a unique identification of the DC Disconnect. The type label is located on the
right-hand side of the enclosure.
Figure5: Layout of the type label
You will require the information on the type label to use the DC Disconnect safely and when seeking
customer support from the SMA Service Line. The type label must remain permanently affixed to the
DC Disconnect.
Item Description Explanation
A‒ Product name
B Item No. DC Disconnect device type
CDate of manufacture DC Disconnect manufacture date
(month/year) of the
D Device-specific characteristics ‒
E Serial No. DC Disconnect serial number

4 Product Description SMA America, LLC
20 SB3-5TLUS22-IA-en-16 Installation Manual
4.3.3 Symbols on the Type Labels
Symbol Description Explanation
Danger to life due to high
voltages
The product operates at high voltages.
All work on the inverter may only be
carried out by qualified persons.
Risk of burns due to hot surfaces The product can become hot during
operation. Avoid contact during
operation. Allow the product to cool
down sufficiently before carrying out
any work. Wear personal protective
equipment such as safety gloves.
Observe the documentation. Observe all documentation that is
supplied with the product.
ETL test mark The product has been certified by
Intertek as being in accordance with the
applicable directives.
FCC test mark The product complies with the
requirements of the applicable
FCC standards.