DC coil contactor for 24V control circuits
The Mitsubishi SD-N21DC24V is a DC-operated contactor with a 24V coil, designed for switching loads in control panels where a DC control voltage is standard.
Coil voltage and DC switching suitability
The 24V DC coil means this contactor pulls in on a standard 24 VDC control supply — common in PLC-driven panels and battery-backed systems. As a DC-operated contactor, the SD-N21DC24V is built for DC coil control; the main contacts switch AC loads typical of motor and heater circuits in industrial panels.