Mitsubishi Electric S-T25 User Manual

MS-TSeries
A
13
IB(NA)0200004ENG-A（1309）MEE
Magnetic Contactors and Magnetic Starters
INSTRUCTION MANUAL
Magnetic Contactors and Magnetic Starters
NSTRUCTION MANUAL
To ensure proper use of the products listed in this catalog,
please be sure to read the instruction manual prior to use.
Safety Warning
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Mitsubishi Electric S-T25 Specifications

General

Brand	Mitsubishi Electric
Model	S-T25
Category	Controller
Language	English

Summary

Safety Precautions

WARNING Levels

Defines severe risks leading to fatal or major injuries.

CAUTION Levels

Defines moderate risks leading to minor injuries or material damage.

Installation & Operation Warnings

Critical safety warnings for installation, maintenance, and operation.

General Usage Cautions

Cautions regarding modification, mounting, wiring, and operating environment.

Operational Cautions

Cautions on heat, manual operation, contact issues, smoke, voltage, and harmonics.

Mounting and Connection

Mounting Procedures

Instructions for physically installing the product, including position and screws.

Mounting Clearance and Rail

Mounting Separation and Arc Space

Connection Procedures

Guidelines for connecting wires to terminals and coil voltage requirements.

Streamlined Wiring Terminals

Crimp Terminal Wiring

Wiring Diagrams

S-T Series Wiring

Wiring diagrams for S-T series contactors for motor connections.

S-2xT Series Wiring

Wiring diagrams for S-2xT series contactors for motor connections.

TH-T(KP) Series Wiring

MSO-T(KP) Series Wiring

MSO-2xT(KP) Series Wiring

Thermal Overload Relay Maintenance

Heater Rating and Adjustment

Maintenance and Inspection Check List

Troubleshooting List

Contacts Do Not Close

Diagnosing and fixing issues where contacts fail to close.

Contacts Do Not Open

Diagnosing and fixing issues where contacts fail to open.

Coil Burning

Troubleshooting steps for coil burning problems.

Thermal Overload Relay Trips

Troubleshooting reasons and solutions for thermal overload relay trips.

Thermal Overload Relay Malfunctions

Troubleshooting for the relay not functioning or not resetting.

Contact Welding & Arc Issues

Troubleshooting contact welding, large arcs, and abnormal wear.

Contact Failures & Terminal Burning

Overload Relay Trip Causes

Overload Relay Non-Function/Reset