Fuji Electric TK13, TK13-TN, TK26, TK25, TK26E Instruction Manual
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Thermal Overload Relays
Note!
Please give careful consideration in handling this
instruction manual and make sure that it is
delivered without fail over to the hands of the
person who takes the final responsibility for
operation and maintenance.
Type TK13
*1, *2, *3
TK25 *3
TK26
*1, *2, *3
TK26E *3
*1: L (Long-time operating type),
Q (Quick operating type)
*2: H (Separate mounting type)
*3: A (Auto-reset type)
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1. Introduction
Thank you for purchasing the thermal overload relays manufactured by Fuji Electric. Please confirm that the
delivered product matches your requirements including ratings and specifications. In case the product is damaged
or accessories are not included in the package, or if there is a defect in the product, please contact our nearest
sales office.
Please read this instruction manual carefully and familiarize yourself with the contents before using the product.
Please make sure that this instruction manual is delivered to the final user and is properly kept for easy access
while the product is in use. If this instruction manual is lost, you can download one from our website.
URL: http://www.fujielectric.co.jp/fcs/
2. Safety Precautions
This product must be handled by a person who has sufficient knowledge and skills to ensure safe use of the
product.
Before using the product, read this instruction manual and other attached documents to familiarize yourself with
the contents to ensure proper use of the product. Use the product only after you have gained sufficient
knowledge about the product, safety information, and relevant precautions.
After reading the documents, keep them in a place where people who use the product can access any time.
In this instruction manual, safety precautions are classified as “Warning” and “Caution”.
Indicates a potentially hazardous situation, which, if not avoided, may result in death or serious
injury.
Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate
injury, or property damage.
It must be noted that items described in may lead to a serious result depending on situations.
Be sure to observe these precautions because every one of them is important.
The warnings and cautions described in this instruction manual are listed below.
Precautions: General
Read the instruction manual carefully before using the product so that you can
use it safely.
Warning
Do not touch the product or attempt to access the product while the power is turned ON. Otherwise, electric
shock or burn may occur.
Be sure to turn OFF the power supply before performing maintenance or inspection. Otherwise, electric
shock may occur.
Caution
When installing the product, provide a space equal to or larger than the value specified in the instruction
manual. Otherwise, burn or fire may occur.
For wiring, use wire sizes appropriate for the applied voltage and flowing current and tighten them to the
tightening torques specified in the instruction manual. Otherwise, fire may occur.
Use attached terminal screws. Due to loosening, etc., fire may occur.
Do not touch the product immediately after the power is turned OFF. Because the product is hot, you may
get burnt.
Do not modify or disassemble the product. Doing so may cause trouble.
Dispose of the product as an industrial waste.
Caution
Caution
Warning
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Contents
1. Introduction ......................................................................................................................................................... - 2 -
2. Safety Precautions.............................................................................................................................................. - 2 -
3. Structure, Part Name, and Manufacturing Lot Number ...................................................................................... - 4 -
3.1 Structure and Part Name .................................................................................................................................. - 4 -
3.2 Type and Specifications Indication Example ..................................................................................................... - 4 -
3.3 Interpretation of Manufacturing Lot Number ..................................................................................................... - 4 -
4. Unpacking ........................................................................................................................................................... - 5 -
5. Precautions in Handling, Unpacking, and Storage ............................................................................................. - 5 -
6. Mounting ............................................................................................................................................................. - 5 -
7. Wiring ................................................................................................................................................................. - 6 -
8. Usage Instructions .............................................................................................................................................. - 7 -
9. Maintenance and Inspection ............................................................................................................................... - 9 -
9.1 Inspection before Operation .............................................................................................................................. - 9 -
9.2 Periodical Inspection ......................................................................................................................................... - 9 -
10. Additional Information Related to UL and CSA Standards ...............................................................................- 10 -
10.1 Short circuit protective devices (SCPD) ........................................................................................................- 10 -
10.2 Wiring diagram .............................................................................................................................................. - 11 -
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3. Structure, Part Name, and Manufacturing Lot Number
3.1 Structure and Part Name
Thermal overload relay
3.2 Type and Specifications Indication Example
(2) Main nameplate (type and rating)
3.3 Interpretation of Manufacturing Lot Number
Example:
3 2 01
(a) (b) (c)
(a) Last digit of the Christian year (3: Year 2013)
(b) Manufactured month (2: February)
1 … January
2 … February
:
9 … September
0 … October
X … November
Y … December
(c) Manufactured day (01: 1st)
Operating part
Main nameplate
(laser printing)
Type
Rating
Manufacturing lot
number
NC contact
NO contact
Main circuit
Adjustment dial
Operating
indicator
Reset bar
Mounting leg
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