Atlas Copco WEDA S30N | Submersible Sludge Pump — 3 HP, 220–240V 1-Phase, 230 GPM, 3" Discharge

Designed for the toughest sludge-handling jobs in mining, civil construction, and heavy industry, the Atlas Copco WEDA S30N is a 3 HP 220–240V 1-Phase 60 Hz submersible pump engineered to move semi-solid, abrasive, fibrous, or thickened liquids that ordinary dewatering pumps simply can't handle. With 230 gpm of flow at heads to 52 ft and a 2-inch solids passage, the S30N is the workhorse of the WEDA Sludge family.

What the S30N Is Built To Pump

The WEDA S30N is purpose-engineered for media that combine high specific gravity, abrasive content, and viscous behavior — the kind of fluid that destroys ordinary impellers in days, not years:

• 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

220–240V 1-Phase Power — Why It Matters

This single-phase variant runs on 220–240V service. Single-phase wiring keeps the install simple — no neutral-balancing, no phase rotation to verify. The Y-series winding configuration is durable, parts-supported worldwide, and matches the most common voltage available on contractor-grade generators and industrial sites.

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. The S30N straddles that line and is the most-deployed model in the range.

Key Differentiators

• Vortex impeller in high-chrome cast-iron alloy — the eye of the impeller sits recessed in the volute so 2-inch solids pass without contact. Wear life is measured in years on typical mining duty, not months.
• Double mechanical seal in stainless-steel cartridge — two seal faces separated by an oil-filled chamber; the primary seal can fail without immediate motor flooding. Cartridge design simplifies replacement.
• Dry-running capability via oversized motor and integrated heat dissipation jacket — the S30N tolerates sump-out conditions that would burn out a conventional submersible.
• 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 cable-failure mode that drops out most submersible pumps.

Application Profiles

Mining: The S30N is one of the most-deployed Atlas Copco pumps in North American mining — tailings management, shaft dewatering, pit sumps, and slurry transfer. The 2-inch solids passage handles typical mine-water debris.

Construction: Foundation drilling, deep excavation dewatering, tunnel face control, and bridge-deck pour-prep. The 230 gpm capacity is large enough for serious work but small enough to be deployed by one person.

Sewage and bypass: Municipal and industrial bypass pumping — particularly during force-main repairs or lift-station rebuilds where the host pump is offline.

Industrial: Process tank cleanout, oil-field produced water, refinery wastewater, ash sluicing at power plants.

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 the Atlas Copco North American distribution centers and supported through the Power Connect online portal. Field service is available through the Atlas Copco dealer network.

SKU 3081620407 · WEDA S30N · 220–240V 1-Phase 60 Hz · 3" discharge · 2" solids · CSA listed · backed by Atlas Copco's industrial pump service network.