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The SINOVA 3MT7 contactor (size 0, 3-pole) is engineered for reliable switching of three-phase loads — including motors, heating, lighting, and other industrial AC equipment. It features three main NO contacts and a control coil (typically 220 V AC), delivering a nominal motor switching capacity of up to ~5.5 kW at 400 V.
With a compact footprint, screw-type terminals, and standard DIN-rail or screw mounting, this contactor is well-suited for control panels, motor starters, HVAC systems, pumps, and building-automation applications. Built to meet industrial insulation and surge-resistance requirements (insulation rated for 1,000 V, surge resistance 6 kV) and offering a mechanical life of up to 10 million switching cycles, it provides durable and stable performance for frequent operations.
| Parameter | Value |
|---|---|
| Product series | SINOVA 3MT7 |
| Contactor size | Size 0 |
| Number of main poles | 3 |
| Main contacts | 3 × NO |
| Rated operational current (AC-3, 400 V) | 12 A |
| Rated operational current (AC-1, 400 V, 40 °C) | 25 A |
| Rated motor power (AC-3, 400 V) | Approx. 5.5 kW |
| Operational voltage (main circuit) | Up to 690 V AC |
| Coil voltage | Typically 220 V AC (50/60 Hz) |
| Coil pick-up power | 80 VA |
| Coil holding power | 12 VA (50 Hz) / 11 VA (60 Hz) |
| Total power loss (hot) | 7.5 W (approx. 2.5 W/pole) |
| Insulation voltage | 1,000 V |
| Surge voltage resistance | 6 kV |
| Protection class (front) | IP20 |
| Mechanical life | 10 million operations |
| Switching frequency (no-load) | 1,800 ops/hour |
| Switching frequency (loaded) | AC-1: 600 ops/hour, AC-3: 750 ops/hour |
| Operating temperature | –5 °C to +55 °C |
| Storage temperature | –25 °C to +70 °C |
| Maximum installation altitude | 2,000 m |
| Terminal type | Screw-type |
| Mounting | DIN-rail or screw-mount |
| Approx. weight | 0.354 kg |
| Auxiliary contacts (if included) | 1 × NO instantaneous |