Table of Contents
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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.
Thermal Overload Relays
Type TK13
TK25
TK26
TK26E
*1: L (Long-time operating type),
Q (Quick operating type)
*2: H (Separate mounting type)
*3: A (Auto-reset type)
Note!
*1, *2, *3
*3
*1, *2, *3
*3
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Table of Contents
Related Manuals for Fuji Electric TK26
Summarization of Contents
Safety Precautions
General Safety and Precautions
Covers general guidance, and definitions of Warning and Caution to ensure safe use of the product.
Specific Safety Warnings and Cautions
Details specific warnings about electrical hazards, burns, and operational cautions for safe product handling.
Structure, Part Name, and Manufacturing Lot Number
Structure and Part Name
Illustrates and labels the main components of the thermal overload relay, including operating parts and terminals.
Type and Specifications Indication Example
Explains how to read the type and rating information indicated on the product's main nameplate.
Interpretation of Manufacturing Lot Number
Provides a guide to decode the manufacturing lot number, including year, month, and day.
Wiring
Connectable Wire Size and Tightening Torque
Specifies the types of wires, sizes, stripping lengths, and required tightening torques for terminal connections.
Connecting Two Crimp Terminals
Illustrates the correct method for connecting two crimp terminals, including protrusion limits.
Wire Gauge Compliance
Adherence to UL/CSA standards requires specific wire sizes and types for safe and compliant wiring.
Usage Instructions
Mounting and Removing from Magnetic Contactor
Details the procedures for attaching and detaching the thermal overload relay to a magnetic contactor.
Removing the Terminal Cover
Explains the method for safely removing the terminal cover using a screwdriver or similar tool.
Current Setting and Resetting
Covers adjusting the current setting dial, understanding the operating indicator, and performing manual/auto reset.
Application to Single-Phase or DC Motors
Guides on wiring and setting adjustments for single-phase or DC motor applications, including phase loss protection.
Maintenance and Inspection
Inspection Before Operation
Checks for loose screws, wire scraps, or improper reset state due to transit shock before initial use.
Periodical Inspection
Recommends initial and periodic inspections, including retightening terminals and renewal timing.
Additional Information Related to UL and CSA Standards
Short Circuit Protective Devices (SCPD)
Lists compatible circuit breakers and fuses for various thermal overload relay and contactor combinations.
Wiring Diagram
Provides schematic diagrams for 3-wire and 2-wire control circuits, including operational notes.
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