Mitsubishi SD-T21DC 24V 48V 125V DC Contactor, 3Pole 9A 11kW 2NO2NC DIN Rail Magnetic Switch

Mitsubishi SD-T21DC Multi-Voltage DC Contactor

Mitsubishi SD-T21DC is a premium non-reversing magnetic contactor for industrial DC control circuits.

This Mitsubishi SD-T21DC unit supports 24V, 48V and 125V DC coil voltage configurations.

Core Technical Specifications

Electrical Performance Parameters

Available coil voltages: 24V DC, 48V DC, 125V DC

Rated operational current: 9A at 690V AC three-phase

Main pole configuration: 3-pole main circuit structure

Maximum operational voltage: 690V AC industrial standard

Auxiliary contact specification: 2NO + 2NC expandable contacts

AC-3 power rating: 5.5kW (240V), 11kW (440V), 7.5kW (690V)

Standard operating frequency: 50Hz and 60Hz universal compatibility

Mechanical & Structural Data

Installation method: Standard 35mm DIN rail mounting structure

Mechanical service life: 10,000,000 no-load switching operations

Operating temperature range: -10°C minimum to +40°C maximum

External protection grade: IP20 finger and dust safety protection

Wiring structure: Reliable screw-clamp terminal connection design

Overall product weight: 0.59kg per standalone contactor unit

Unique Product Strengths

This dc coil contactor eliminates buzzing noise present in traditional AC coil devices.

Multi voltage coil options adapt to diverse industrial dc control power systems.

Extra 2NO2NC auxiliary contacts enrich motor control switch circuit logic.

Long mechanical endurance lowers maintenance frequency for automation panel layouts.

Compact industrial contactor design saves cabinet space for integrated wiring.

Industrial Application Coverage

Mitsubishi SD-T21DC handles stable power switching for medium-sized drive motors.

This Mitsubishi SD-T21DC model suits fan, pump and process machinery control systems.

It acts as core magnetic contactor for packaging and material handling equipment.

The unit supports safe circuit control for elevator and logistics automation devices.

Professional Installation & Usage Tips

Install Mitsubishi SD-T21DC on standard DIN rails for stable and fast assembly work.

Select matched coil voltage to avoid burnout of internal coil components.

Equip surge suppressors to resist transient voltage spikes in industrial circuits.

Utilize auxiliary contacts to expand interlock and signal feedback functions.