The HQ-021-MC is developed for professional and industrial applications that demand reliable and stable connection performance. Its compact and practical design allows secure installation and dependable integration into electrical and control systems, supporting consistent operation in challenging environments.
Constructed with durable, high-quality materials, the HQ-021-MC maintains dependable performance under continuous operation and mechanical load. The internal structure is arranged to ensure secure contact and long-term stability, even in applications subject to vibration, repeated use, or environmental stress.
The HQ-021-MC is suitable for a wide range of system configurations, serving as either a main or auxiliary connection component. Controlled manufacturing and inspection processes ensure consistent quality and operational safety. With its emphasis on reliability, adaptability, and extended service life, it is a practical solution for long-term professional applications.

Technical Data
| Series | HQ Insert Series |
| Male / Female | Male |
| Connection Type | Crimp connection |
| Specifications | 3A |
| Number of Connector Contacts | 21 |
| Grounding Contacts | No |
| Rated Current | 6.5 A |
| Rated Voltage | 50 V |
| Rated Pulse Voltage | 0.8 kV |
| Class of Pollution | 3 |
| Insulation Resistance | ≥ 10¹⁰ Ω |
| Working Temperature | -40℃ to +125℃ |
| Mating Cycles | ≥ 500 |
| Insert Material | Polycarbonate |
| Insert Color | RAL 7032 (Light Gray) |
| Flame Retardant Rating (UL94) | V0 |
| Contact Material | Copper Alloy |
| Surface Treatment | Silver-plated / Gold-plated |
| Contact Resistance | ≤ 3 mΩ |
| Wire Gauge (mm²) | 0.09–0.52 mm² |
| Wire Gauge (AWG) | 28–20 AWG |
| Stripping Length | 5 mm |
| Standard | DIN EN 60664 / DIN EN 61984 |
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