Ratings
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Discover the HIITIO HCF40B Series DC Contactor, a compact and reliable solution designed for high-voltage DC applications. This contactor features a maximum switching voltage of up to 750VDC, rated current of 40A, and a single-pole single-throw normally open (SPST-NO) main contact configuration with no auxiliary contacts. Powered by a 12VDC or 24VDC coil, it operates efficiently in extreme environments from -40°C to +85°C and 5% to 85% RH. Weighing only about 55g, its small size and light weight make it ideal for space-constrained installations.
| Parameter | Value |
|---|---|
| Max. Switching Voltage | 450VDC / 750VDC (model dependent) |
| Rated Current | 40A |
| Contact Arrangement | SPST-NO |
| Contact Voltage Drop | ≤0.4V (at 40A) |
| Limiting Short-time Current | 60A: 1800s; 80A: 60s; 160A: 5s; 240A: 3s |
| Coil Voltage | 12VDC / 24VDC |
| Pick-up Voltage | ≤9VDC (12V) / ≤18VDC (24V) |
| Drop-out Voltage | ≥1VDC (12V) / ≥2VDC (24V) |
| Rated Operating Power | Approx. 3W |
| Operate Time | Max: 30ms |
| Release Time | Max: 10ms |
| Mechanical Life | 2×10^5 operations |
| Electrical Life (Resistive Load) | Varies by model (e.g., 40A 750VDC: 50,000 ops making only) |
| Dielectric Strength | ≥2500VAC (open contacts) / ≥3000VAC (contacts to coil) |
| Insulation Resistance | ≥1000MΩ (750VDC) |
| Shock Resistance (Functional) | 20g, half-sine wave 11ms |
| Vibration Resistance (Functional) | 49m/s² (10~500Hz) |
| Weight | Approx. 55g |
HIITIO® was established in 2018 as a result of Hecheng Electric introducing a mature R&D team. HIITIO specializes in producing high-voltage DC electrical devices for EV, solar energy systems, and energy storage applications.
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