The Schneider Electric TeSys K LC7K12017B7 is a three-pole contactor rated for control applications, with a 24 V AC coil and one normally closed auxiliary contact. Its rated operational current is 12 A in AC-3 duty at ≤440 V, and it carries motor power ratings of 4 kW at 480 V AC, 5.5 kW at 380–415 V AC, and 3 kW at 220–230 V AC (50/60 Hz). The utilisation categories cover AC-3 (motor starting), AC-1 (resistive loads), and AC-4 (plugging/inching).
The 4 kW / 5.5 kW motor power figures across voltage ranges let you match the contactor to standard three-phase induction motors without oversizing. Flame retardance meets V1 per UL 94, plus NF F 16-101 and NF F 16-102 requirements — relevant for rail or transit applications where fire-smoke-toxicity limits apply.
Physical integration
The contactor measures 45 mm wide, 58 mm high, and 57 mm deep. The 3 NO pole composition with 1 NC auxiliary means it can directly replace a similar TeSys K unit in a control panel without re-wiring the auxiliary circuit, provided the coil voltage matches.