NewTrend · modular AC contactor
Product overview
NewTrend YHC-40 is a two-pole, two-normally-open modular contactor for AC load switching. The AC-7a rating is 40A and the AC-7b motor-duty rating is 15A, at a rated operating voltage of 250VAC for this 2P configuration. Choose a separate AC 24V, AC 48V, AC 110V, AC 230V, DC 12V or DC 24V coil version. The modular body is 36mm wide.
Technical selection summary
| Model | YHC-40 |
|---|---|
| Main contact arrangement | 2P / 2NO |
| Rated operational current, AC-7a | 40A |
| Rated operational current, AC-7b | 15A |
| Rated operational voltage | 250VAC for this 2P configuration |
| Main-circuit frequency | 50Hz |
| Selectable coil versions | AC24V / AC48V / AC110V / AC230V; DC12V / DC24V |
| AC coil frequency | 50/60Hz |
| Main terminals | 1–2 and 3–4 |
| Control terminals | A1–A2 |
| Rated insulation voltage | 500VAC |
| Rated impulse withstand voltage | 4kV |
| Pollution class | 2 |
| Electrical durability | 100,000 operations |
| Maximum switching operations | 100 per day (June2026 catalogue) |
| Contactor enclosure protection | IP20; source specifies IP40 in a matching modular enclosure |
| Operating temperature | -5 to +60°C |
| Storage temperature | -40 to +70°C |
| Tropicalization | Treatment2;95% relative humidity at 55°C (IEC/EN60068-1) |
| Spacer condition | Use a spacer between adjacent units at 50–60°C internal enclosure temperature |
| Overall dimensions (W×D×H) | 36×68×85mm |
| Coil consumption: AC230V reference | Holding 4.6VA / actuation 34VA / maximum power 1.6W |
Operation
- Apply the selected nominal coil voltage to A1/A2. The coil options are separate factory versions; match AC/DC and nominal voltage before connection.
- The two normally-open main contacts use terminals 1–2 and3–4. Select the actual load using its AC-7a or AC-7b utilization category.
- The catalogue specifies a spacer between adjacent contactors when the temperature inside the enclosure is between 50°C and 60°C.
Typical applications
- Lighting and resistive-heating control in building distribution boards
- Ventilation, pumps and domestic-type motor loads selected by the AC-7b rating
- Modular DIN-rail load switching controlled by a timer or automation output
View or download YHC original modular-contactor catalogue, June 2026 (PDF)
Product reference images and drawings
Original YHC model definition, dimensions and operating limits
Original pole and contact combinations, wiring and conditional coil consumption
This page offers the verified 2P 2NO YHC-40 configuration. Match the exact AC/DC coil version to the control supply, and use the 15A AC-7b rating for applicable motor duty. Main-circuit frequency is 50Hz; the AC coil choices are listed at 50/60Hz. Product photographs retain their original technical markings; where visible, the coil label shows the AC 230V example. The family PDF also covers other configurations. Installation and wiring must be performed by qualified electricians.
