Long lifespan, low power consumption, and flexible procurement options make the SRUH (22FH) Relay a high-value choice for heavy-duty applications. Even under high load and high frequency operation at 20A, it ensures long-term trouble-free operation, significantly reducing downtime maintenance costs and replacement frequency. Its ultra-wide nominal voltage range of 5-48VDC and low-power coil configuration of 0.36W/0.45W not only adapt to diverse heavy-duty circuit designs but also help optimize energy consumption in end products, enhancing market competitiveness. From a procurement perspective, the product can cover different power and safety level requirements without customization. The PCB terminal design simplifies the assembly process. Leveraging Songle's 200 million unit production capacity and end-to-end quality control ("mold manufacturing - metal processing - finished product inspection"), it ensures consistent quality and stable supply for every product. Combined with globally synchronized professional after-sales support, it allows buyers to achieve optimal balance in three core dimensions: quality assurance, delivery efficiency, and cost control.
20A switching capability
UL insulation system: Class F, Class B
Sealed and flux proofed types available
Standard PCB layout
| Parameter | Specification |
| Contact arrangement | A/B/C |
| Contact rating | 16A/20A 250VAC; 20A 125VAC |
| Contact resistance | ≤100mΩ |
| Electrical endurance | 10⁵ / 10⁴ |
| Mechanical endurance | 10⁷ |
| Parameter | Specification |
| Nominal voltage | 5–48VDC |
| Power dissipation | 0.36W, 0.45W |
| Pick-up voltage(Max) | 75% of nominal voltage |
| Drop-out voltage(Min) | 10% of nominal voltage |
| Parameter | Specification |
| Ambient temperature | –40°C~+85°C/+105°C |
| Dielectric strength (Between coil and contacts) | 1500VAC, 2500VAC (1min) |
| Dielectric strength (Between open contacts) | 1000VAC (1min) |
| Insulation resistance (500VDC) | 100MΩ |
| Wiring diagram (Bottom view) |
|
| Installation hole drawing (Bottom view) | |
| Termination | P.C.B. |
| Weight | 16g |
| Safety approval |
Address
CW7, Area A, Zhejiang Yuandong Industrial City, Yuyao City, Zhejiang Province, China
Tel
