The KM-400 contactor is used for controlling electrical circuits in DC and AC electrical installations up to 400A. The KM-400D contactor is designed to operate in ambient temperatures ranging from -60°C to +50°C and at a relative humidity of up to 98%.

Technical Specifications of the KM-400 (KM-400DV) Contactor: • Control circuit voltage (DC), V: 27 (from 24 to 30V) • Working voltage of the main contacts and auxiliary outputs, V: 24-30 • Rated current in the main contacts circuit, A: 400 • Range of switched currents, A: 20-400 • Permissible switching frequency (per minute): 2 • Operating mode: Continuous

The KM-400DV contactor can withstand: • Linear acceleration up to 8g without damage or spontaneous contact opening/closing. • Short-term shaking at mounting points with frequencies from 60 to 100 impacts per minute at an acceleration of 4g.

The KM-400DV contactor is widely used in aviation equipment and also serves as a welding contactor (KM400D) for DC welding machines.

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