Mitsubishi S-T12 AC Magnetic Contactor, 3Pole 13A 5.5kW 1NO1NC Multi Optional Coil Voltage

Mitsubishi S-T12 AC Contactor

Mitsubishi S-T12 is a miniaturized high-performance AC magnetic contactor in the updated S-T series.

This S-T12 unit delivers reliable stable switching for small and medium industrial motor loads.

Available Optional Coil Voltages (Front Display)

AC100V (100–127V wide range for low-voltage industrial AC control circuits)

AC200V (200–240V wide range for mainstream global industrial AC systems)

AC400V (380–440V wide range for high-voltage three-phase power equipment)

Unique Product Strengths

Mitsubishi S-T12 adopts compact mini-width design to save valuable cabinet inner space.

This magnetic contactor supports three universal AC coil voltages for global site matching.

Built-in 1NO1NC auxiliary contacts meet basic interlock and signal feedback needs.

Optimized arc runner structure enhances safety during frequent switching operations.

High mechanical endurance effectively reduces long-term equipment maintenance costs.

Core Technical Specifications

Electrical Performance Parameters

Operation type: AC coil operated non-reversing industrial contactor

Rated AC-3 operational current: 13A at 200V three-phase industrial operation

Universal rated current: 7A at maximum 690V AC industrial working voltage

Main pole configuration: 3-pole standard industrial main circuit structure

Auxiliary contact layout: 1NO + 1NC built-in signal control contacts

AC-3 power rating: 3.5kW(240V), 5.5kW(440V), 5.5kW(690V)

Operating frequency: 50Hz and 60Hz dual universal frequency compatibility

Mechanical service life: 10,000,000 no-load switching operation cycles

Electrical service life: 100,000 standard AC3 load switching cycles

Mechanical & Structural Data

Mounting method: Standard 35mm DIN rail and screw fixed dual installation

Operating temperature range: -10°C to +40°C standard ambient environment

Wiring mode: Stable screw-clamp terminal connection industrial design

Protection grade: IP20 finger-safe and dust-proof safety protection structure

Product dimensions: 43mm width, 75mm height, 78mm depth

Unit weight: 0.27kg per standalone contactor unit

Compliance standards: EN60947-4-1, IEC60947-4-1, JIS C8201-4-1

Industrial Application Coverage

This magnetic contactor controls medium fan and pump motors in automation systems.

It provides stable power switching for standard packaging and processing machinery.

The industrial contactor fits compact automation panel component layouts perfectly.

It serves circuit control tasks for small-scale factory automation equipment.

Professional Installation & Usage Tips

Mount Mitsubishi S-T12 firmly on DIN rails for fast and standardized assembly.

Select matched AC coil voltage to avoid coil overheating and operational faults.

Install surge suppressors to shield circuits from industrial voltage spikes.

Check terminal connections regularly to ensure stable long-term circuit operation.