The HMK-003/4-FC is a versatile industrial connector engineered for reliable signal and power transmission in harsh operating environments. Equipped with an IP67 protection rating, it delivers robust defense against dust ingress and water immersion, ensuring consistent performance in challenging industrial settings. Its rugged metal housing and gold-plated contacts are precision-machined to resist corrosion and minimize contact resistance (<50mΩ), guaranteeing long-term stability.
With a current rating of 15A and voltage rating of 600V AC/DC, this connector meets the power demands of industrial systems while maintaining exceptional signal integrity. It operates seamlessly across an extreme temperature range of -40°C to +105°C and withstands vibration, shock, and chemical exposure, making it ideal for demanding multi-application scenarios.
Compatible with standard industry interfaces, the HMK-003/4-FC supports tool-free quick mating for efficient installation and maintenance. Suitable for industrial automation, robotics, power distribution, and heavy machinery, it integrates durability, versatility, and reliable performance to fulfill the stringent requirements of industrial IoT and mission-critical systems.

Technical Data
| Series | HM modular insert series |
| Module size | Single module |
| Connection type | Crimp connection |
| Male/female | Female |
| Number of connector contacts | 3+4 (total 7 contacts) |
| Rated current | 40A (main rating); 10A (auxiliary rating) |
| Rated voltage | 830V |
| Rated pulse voltage | 8kV |
| Class of pollution | 3 |
| Insulation resistance | ≥10¹⁰Ω |
| Working temperature | -40℃...+125℃ |
| Mating cycles | ≥500 |
| Inserts material | Polycarbonate |
| Inserts color | RAL 7032 (light gray) |
| Flame retardant rating as per UL94 | V0 |
| Contact material | Copper alloy |
| Surface treatment | Silver-plated; Gold-plated |
| Contact resistance | ≤1mΩ (main contacts); ≤3mΩ (auxiliary contacts) |
| Wire gauge (mm²) | 1.5-6mm² (main wires); 0.14-2.5mm² (auxiliary wires) |
| Wire gauge (AWG) | 16-10 AWG (main wires); 26-14 AWG (auxiliary wires) |
| Maximum cable diameter | 5mm |
| Standard | DIN EN 60664; DIN EN 61984 |
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