Atlas Copco WEDA S30N | Submersible Sludge Pump — 4 HP, 460V 3-Phase, 250 GPM, 3" Discharge

Designed for the toughest sludge-handling jobs in mining, civil construction, and heavy industry, the Atlas Copco WEDA S30N is a 4 HP 460V 3-Phase 60 Hz submersible pump engineered to move semi-solid, abrasive, fibrous, or thickened liquids that ordinary dewatering pumps simply can't handle. With 250 gpm of flow at heads to 58 ft and a 2-inch solids passage, the S30N is the workhorse of the WEDA Sludge family.

What the S30N Is Built To Pump

• Mine tailings and process slurry up to 30% solids by volume
• Raw and partially treated municipal sewage
• Bentonite and drilling mud from foundation, geothermal, or water-well drilling
• Concrete washdown and ready-mix plant residue
• Aggregate processing fines and gravel-pit sediment
• Wastewater from food, dairy, beverage, and meat-packing operations
• Storm runoff with heavy organic and inorganic load
• Tank, basin, and clarifier cleanout — including settled sludge layers

460V 3-Phase Y-Series Power — Why It Matters

The 460V Y-series variant cuts cable cost on long runs (smaller conductor for the same kW) and is the dominant industrial voltage on commercial, industrial, and large construction sites in North America. The Y-series winding configuration is durable and globally parts-supported.

Engineering Specifications

The WEDA Sludge Architecture

The S30N is the size where Atlas Copco's sludge-pump engineering really shines. Below this point, drainage pumps with oversized passages can often substitute. Above this point — at the S50, S60, and the L-series slurry pumps — you're into industrial three-phase territory exclusively.

Key Differentiators

• Vortex impeller in high-chrome cast-iron alloy — 2-inch solids pass without contact. Wear life is measured in years on typical mining duty.
• Double mechanical seal in stainless-steel cartridge — two seal faces separated by an oil-filled chamber; cartridge design simplifies replacement.
• Dry-running capability via oversized motor and integrated heat dissipation jacket.
• Optional built-in starter and motor protection — plug-and-play wiring, no separate control panel required for most installs.
• Aluminum-alloy upper body with cast-iron wear components — light enough to be hauled into a manhole, durable enough for continuous-duty pumping.
• Sealed cable entry with strain relief — eliminates the most common failure mode of submersible pumps.

Application Profiles

Mining: Tailings management, shaft dewatering, pit sumps, and slurry transfer.

Construction: Foundation drilling, deep excavation dewatering, tunnel face control, and bridge-deck pour-prep.

Sewage and bypass: Municipal and industrial bypass pumping during force-main repairs or lift-station rebuilds.

Industrial: Process tank cleanout, oil-field produced water, refinery wastewater, ash sluicing at power plants. The 460V variant is the standard pick where industrial 480V service is available — the most economical option on long cable runs.

Service and Parts Support

Genuine Atlas Copco WEDA service kits cover seal assemblies, impeller replacements, motor end caps, and the full hydraulic restoration package. Parts are stocked in Atlas Copco's North American distribution centers and supported through the Power Connect online portal. Field service is available through the dealer network.

SKU 3081620418 · WEDA S30N · 460V 3-Phase Y-Series 60 Hz · 3" discharge · 2" solids · CSA listed · backed by Atlas Copco's industrial pump service network.