Mingri Electric
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| Code | Description |
|---|---|
| 1 | AC contact |
| 2 | Design code |
| 3 | The basic specification code corresponds to the rated working voltage under AC-3 utilization category; expressed by the numerical value of the rated operating current at 380V. |
| 4 | Main contact pairs: The ones place represents NC (normally closed); The tens digit represents NO (normally open). |
| 5 | Auxiliary contact pairs: The ones place represents NC (normally closed); The tens digit represents NO (normally open). |
1. The contactor features a positive-mounted, direct-action double-break contact structure. The cover and body consist of arc-resistant plastic. Models A9-16 use natural arc extinguishing, while A9-26 to 110 incorporate U-shaped arc extinguishing plates for superior performance with zero arc-over distance. Contacts are silver-based alloy for excellent conductivity and long service life. The iron core uses a compact E-shaped design with flexible coil wiring options.
The base is glass fiber reinforced plastic, ensuring high strength and dielectric properties. Installation supports both screws and DIN rail. All live conductive parts are enclosed for safety.
2. Working Principle: When the control power is applied to the pull-in coil, the magnetic system generates electromagnetic force, driving moving parts to make or break the circuit.
| Circuit | Category | Typical Usage Example |
|---|---|---|
| Main Circuit | AC-1 | Noninductive or micro inductive load, resistance furnace |
| AC-2 | Starting and breaking of wire winding type asynchronous motor | |
| AC-3 | Starting and breaking during operation of cage asynchronous motor | |
| AC-4 | Starting, plug breaking, or reverse revolution of cage asynchronous motor | |
| Auxiliary | AC-15 | Control AC electromagnet load (>72VA) |
| DC-13 | Control DC magnet load |
| Type | Ith (A) | AC-3 Rated Current (Ie) | AC-3 Max Power (KW) | ||||
|---|---|---|---|---|---|---|---|
| 220V | 380V | 660V | 220V | 380V | 660V | ||
| A9-9 | 26 | 9 | 9 | 7 | 2.2 | 4 | 5.5 |
| A9-12 | 28 | 12 | 12 | 9 | 3 | 5.5 | 6.5 |
| A9-26 | 45 | 26 | 26 | 17 | 6.5 | 11 | 15 |
| A9-95 | 145 | 96 | 96 | 65 | 25 | 45 | 55 |
| A9-300 | 450 | 300 | 300 | 280 | 88 | 160 | 220 |
| Type | A | B | C | a | b1 | Mounting Mode |
|---|---|---|---|---|---|---|
| A9-9,12,16 | 44 | 74 | 74 | 35 | 60 | Screw or TH35 rail |
| A9-26 | 54 | 90 | 93.5 | 45 | 80 | Screw or TH35 rail |
| A9-50,63,75 | 70 | 110 | 108 | 60 | 100 | Screw or TH35/TH75 rail |
| A9-95,110 | 90 | 148.5 | 123.5 | 78 | 136 | Screw or TH75 rail |
