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 380V. Example: When fully adjusted to minimum settings, starting voltage is 0V with a soft start time of 0 seconds (0 seconds not recommended). With a 220V power supply and settings adjusted halfway, the starting voltage is 55V and soft start time is approximately 22 seconds. With a 380V power supply and settings adjusted halfway, the starting voltage is 95V and soft start time is approximately 22 seconds. With a 220V power supply and settings at maximum, the starting voltage ranges from 110V to 220V, with a soft start time of about 15 seconds. With a 380V power supply and settings at maximum, the starting voltage ranges 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 voltage ratings 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. An ideal replacement for traditional star/delta starters, autotransformer starters, magnetic reduced-voltage starters, inverters, and other reduced-voltage starting devices. 220V single-phase motor soft start module (motor conversion method) 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) Select model based on actual working current using formula: Power ÷ Voltage × 5. Example: For an 8000W motor at 220V — 8000 ÷ 220 × 5 = 181.81A; select 200WA model as closest match. This soft start module is compatible with motors regardless of capacitor use. Motors above 2000W require a heat sink for continuous operation. 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, 60Hz Soft start time is adjustable between 0–30 seconds (refers to full ramp from 0V to 220V or 0V to 380V). Gradually increases starting voltage from 0–50% up to rated voltage (220V–380V). Two operational methods: 1. Close switch to energize main power and initiate soft start. 2. Use external switch control: close to start, open to stop. Soft start module variants: 1. SSR-40WA-R1 includes soft start function only (no soft stop). 2. SSR-40WA-R2 includes both soft start and soft stop functions (voltage ramps down smoothly upon stop command). Note: 1. Do not apply voltage directly to the control switch. 2. Do not use a multimeter on the load side to assess product condition. 3. Performance subject to field testing. Operating temperature range: -25°C to 60°C