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Mitsubishi Electric S-T21 User Manual

Mitsubishi Electric S-T21
32 pages
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MS-TSeries
A
13
IB(NA)0200004ENG-A1309MEE
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
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
www.MitsubishiElectric.co.jp/melfansweb
Eco Changes is the Mitsubishi Electric
Group
,
s environmental statement, and
expresses the Group
,
s stance on
environmental management. Through a
wide range of businesses, we are helping
contribute to the realization of a
sustainable society.
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Mitsubishi Electric S-T21 Specifications

General IconGeneral
Main Contact MaterialSilver alloy
Number of Outputs16
Program Memory8K steps
MountingDIN Rail Mount
Operating Temperature55°C
Storage Temperature-20°C to 70°C
Coil Voltage24V DC

Summary

Safety Precautions

Safety Warning Categories

Classifies hazards into WARNING (fatal/major injury) and CAUTION (minor injury/material damage) based on handling mistakes.

Key Safety Instructions

Highlights critical safety actions such as disconnecting power, avoiding live parts, not modifying, securing mounting space, and using correct wiring.

Working Environment

Mounting and Connection

Product Mounting

Details correct vertical mounting, tolerance limits, screw tightening torque, and environmental requirements for mounting.

Mounting Clearance and Arc Space

Specifies minimum separation distances between contactors and grounding metal to ensure safety and prevent electrical interference.

Connection Methods

Covers matching coil voltage/frequency and connecting wires to terminal screws with self-lifting plates.

Wiring Diagrams and Schematics

S-T Series Wiring Diagrams

Illustrates various wiring configurations for S-T series contactors with 3-phase and single-phase motors.

S-2xT Series Wiring Diagrams

Presents wiring diagrams for S-2xT series contactors, covering different motor types and configurations.

TH-T Series Wiring Diagrams

Shows representative wiring diagrams for TH-T series contactors used with 3-phase and single-phase motors.

Thermal Overload Relay Maintenance

Heater Rating and Adjustment

Explains how to adjust the thermal overload relay's settling current using the knob and the reset procedure after tripping.

Maintenance and Inspection Checklist

Troubleshooting Common Issues

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