Mitsubishi Elevator Contactor SDN21 AC Magnetic Contactor with Silver Alloy Contacts and Compact Cabinet-Mount Design for Anti-Vibration Performance

Mitsubishi Elevator Contactor SDN21 AC Magnetic Contactor For Elevator Control Cabinet 

The SDN21 is an original‑equivalent magnetic AC contactor specially manufactured for Mitsubishi elevator control cabinets. Built with high‑quality silver alloy contact points, durable coil assembly and arc‑suppression structure, it delivers stable electrical switching performance with low contact burnout. This contactor features compact cabinet‑mount design, precise dimension matching for Mitsubishi elevator control systems, easy direct replacement during maintenance and modernization. Strictly tested to meet elevator industry electrical safety standards, it resists frequent on‑off cycling caused by continuous elevator operation. Excellent anti‑vibration capability adapts to elevator cabinet working conditions, effectively reducing fault risks caused by poor contact. Widely stocked spare part for elevator repair, retrofit and component renewal projects.

Functions

1. Mainly controls switching of elevator drive, door machine and auxiliary circuits inside the elevator control cabinet.
2. Conducts frequent make‑and‑break operations for electric circuits, transmitting control signals to realize elevator start‑stop and logic execution.
3. Silver alloy contacts ensure stable current transmission, avoid arc damage during circuit switching to protect peripheral electrical components.
4. Auxiliary contact provides feedback signal for elevator control system to monitor contactor working status for safety interlock logic.

Rich Content 

Working ambient temperature:‑10℃ ~ +55℃; Relative humidity ≤90%, non‑condensing. Suitable for indoor elevator machine room and control cabinet installation. Keep away from corrosive gas, conductive dust, water splash and strong vibration sources. Rated for repeated frequent switching cycles typical of elevator operation. Regular inspection for contact abrasion and coil aging is recommended during routine elevator maintenance. Applicable for passenger elevators and light‑duty freight elevators equipped with Mitsubishi control systems. Perfect replacement for broken, worn‑out or faulty old SDN21 contactors to restore normal elevator running performance.