We source directly from Eaton - 100% genuine, new-in-box certified parts.
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Eaton / Moeller Series
420A, 3P, soft starter, premium pump control with level/edge sense and inline or inside-the-delta wiring
The Eaton S811+ model S811+U42P3S premium soft starter is a high-capacity, intelligent motor starting solution designed for demanding three-phase motor applications. Rated at 420 A with a U-frame construction, it operates over a wide voltage range of 200–600 V at 47–63 Hz. The unit includes a digital interface module with LCD display, Modbus RTU communication, and a 24 Vdc control supply for advanced monitoring and control. Premium features such as level/edge sensing, pump control with extended ramp, and support for both inline (default) and inside-the-delta wiring configurations provide smooth starting and stopping while reducing mechanical stress. Built-in overload protection and a bypass contactor simplify installation and enhance motor protection in industrial environments.
Country of Origin: DO
HTS Code: 8536.50.4000
We source directly from Eaton - 100% genuine, new-in-box certified parts.
| Brand | Eaton |
|---|---|
| Series | S811+ |
| Product Type | Soft Starter |
| Amperage Rating | 420 A |
| Full Load Current Range | 131–420 FLA |
| Number of Poles | Three-pole |
| Phase | Three-phase |
| Frame Size | U |
| NEMA Rating | NEMA 0 |
| Configuration | Inline (default) or Inside-the-Delta |
| Horsepower Rating | 350 hp |
| Bypass | Contactor |
| Brake Chopper | No brake chopper |
| Operating Voltage | 200–600 V |
|---|---|
| Voltage Rating | 480 V |
| Frequency Rating | 47–63 Hz |
| Control Voltage | 24 Vdc |
| AC Control Voltage (Max) | 240 Vac |
| DC Control Voltage (Max) | 120 Vdc |
| Communication | Modbus RTU |
| User Interface | Digital Interface Module |
| Display | LCD |
| Wire Size | #4 AWG–500 kcmil |
| Number of Conductors | 1–2 |
| Operating Temperature | -30°C to -50°C |
| Options | Premium; 600 V rated; pump control and extended ramp; level/edge sense; inline or inside-the-delta wiring |
| Product Dimensions (L × W × H) | 7.16 in × 7.73 in × 12.72 in |
| Product Volume | 704.011 in³ |
| Product Weight | 48 lb |
| Packaging Dimensions (L × W × H) | 19 in × 14.5 in × 12.72 in |
| Packaging Weight | 48 lb |
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Doing business with KM Parts has been a game-changer for our company. Their vast inventory and prompt same-day shipping have significantly minimized our downtime. The team's expertise and willingness to go the extra mile have made them an invaluable partner in our industrial automation needs.
We only sell authorized Eaton/Moeller parts. No knock-offs, no used parts, all warrantied. As the largest authorized stocking USA distributor representing Eaton/Moeller, we’re here to help your company run smoothly, with the best parts available, at competitive pricing, and with minimal downtime.
