The start potentiometer sets the initial voltage to 200V when adjusted halfway. The soft start potentiometer has a maximum duration of 30 seconds, corresponding to the full 380V output. Example: When all settings are at minimum, starting voltage is 0V and soft start time is 0 seconds (0 seconds is not recommended). With a 220V power supply and settings adjusted halfway, the starting voltage is 55V with a soft start time of approximately 22 seconds. With a 380V power supply and settings adjusted halfway, the starting voltage is 95V with a soft start time of approximately 22 seconds. With a 220V power supply and settings at maximum, the output rises from 110V to 220V with a soft start time of approximately 15 seconds. With a 380V power supply and settings at maximum, the output rises from 190V to 380V with a soft start time of 15 seconds. General recommendation for selection margin: SSR-60WA-R for 2.2kW applications. This product is commonly used with motors operating at the following voltages: 220V (50Hz, 60Hz) 230V (50Hz, 60Hz) 240V (50Hz, 60Hz) These three voltages are supported by this product. Single-phase 220V soft start module applications include: Petroleum, chemical, fire protection, construction, metallurgy, building materials, mining, environmental protection, and other industrial fields. Suitable for fans, pumps, belt conveyors, ball mills, car wash machines, conveyors, and compressors. It serves as a suitable replacement for traditional reduced-voltage starting methods such as star/delta starters, auto-transformers, magnetic controllers, and inverters. 220V single-phase motor soft start module (motor control method) Available models: SSR-20WA-R1 (1kW) SSR-40WA-R1 (1.5kW) SSR-60WA-R1 (2kW) SSR-100WA-R1 (4kW) SSR-150WA-R1 (6kW) SSR-200WA-R1 (8kW) Selection guide: Calculate based on 5 times the actual operating current: Power ÷ Voltage × 5 Example: For an 8000W motor at 220V: 8000 ÷ 220 × 5 = 181.81A; select the closest model, SSR-200WA-R1 (200A). This soft start module is compatible with motors regardless of capacitor use. For motors operating continuously above 2000W, a heatsink is required. Voltage compatibility: (220V + 0V = single-phase 220V AC) (230V + 0V = single-phase 230V AC) (240V + 0V = single-phase 240V AC) (220V + 220V = two-phase 380V–400V AC) Frequency: 50Hz or 60Hz Soft start time is adjustable from 0 to 30 seconds (refers to the ramp-up time from 0V to 220V or 0V to 380V) Gradually increases the starting voltage from 0–50% up to the rated voltage (220V–380V) Two operation modes: 1. Close the switch to energize the main power and initiate soft start. 2. Use the switch to control operation: close to start, open to stop. The soft start module offers two versions: 1. SSR-40WA-R1 includes soft start only (no soft stop) 2. SSR-40WA-R2 includes both soft start and soft stop functions (voltage ramps down similarly to startup) Note: Do not apply voltage directly to the control switch. Do not use a multimeter on the load side to assess product functionality. Performance subject to field testing. Operating temperature range: -25°C to 60°C