This data sheet lists the features and specifications of Hongfa Relay General Purpose Power Relays in detail, including operating voltage, current, rated load, ambient temperature, contact resistance, operating time, release time, mechanical life, electrical life, weight, etc.
The HF420 series is a miniature intermediate power relay with a life expectancy of over 100 million operations. It offers DC coil voltages up to 115 V, rugged construction, and options for dry‑circuit contacts rated at 2 A, 3 A, 5 A or 7.5 A. Both sealed and unsealed versions are available in 2‑, 4‑ and 6‑pole configurations.
The document includes detailed contact and coil data, mechanical and electrical life ratings, environmental limits, and complete outline dimensions, wiring diagrams and PCB layouts for each pole configuration. Ordering information lists the various part numbers for unsealed and sealed types.
| Life expectancy | greater than 100 million operations |
|---|---|
| Contact rating A | 2 A 26 VDC/115 V AC |
| Contact rating B | 3 A 28 VDC/115 V AC |
| Contact rating C | 5 A 26 VDC/115 V AC |
| Contact rating D | 7.5 A 28 VDC/115 V AC |
| Mechanical life | 1 × 10⁶ operations |
| Electrical life | 1 × 10⁶ operations |
| Vibration resistance | 1.5 mm, 10 to 55 Hz |
| Shock resistance | 196 m/s² (20 g) |
The HF420 relay is rated for a life expectancy greater than 100 million operations.
The HF420 relay can be driven with DC coil voltages up to 115 V, and it also supports 115 V AC coil operation.
Yes, sealed versions are offered for both 2‑pole and 4‑pole configurations.