Grundfos SE.100.110.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Wastewater with Open S-Tube Impeller

Operational load scaling for municipal drainage networks is supported by the heavy-duty structural foundation of the Grundfos SE.100.110.4.52H.N.51D.A.T. This submersible pump addresses the requirements for the removal of contaminated liquids in collection pits where reliable solids passage is required for maintenance. The system maintains stable performance in permanent submerged environments with liquid temperatures up to 40 degrees Celsius. Maintaining operational flow behavior in deep subsurface pits is essential for drainage transfer duties.

Hydraulic capacity is driven by an 11 kW four-pole motor operating on a 415v three-phase supply with a rated current of 23 Amps. This assembly generates a maximum flow of 6660 L/Min and achieves a maximum head of 22.4 m. The motor utilizes a star-delta starting method to manage peak electrical loads and ensure torque stability during initial activation cycles. Operating at a rated speed of 1481 rpm, the unit ensures consistent pressure behavior for high-volume wastewater handling infrastructure.

Internal centrifugal design utilizes a high-efficiency Open S-Tube impeller to facilitate the passage of solids in suspension without internal contact. This configuration handles particles through the housing, preventing the internal clogging that could compromise volumetric throughput during prolonged service. By utilizing the Open S-Tube principle, the unit minimizes internal friction and vibration to protect the rotating assembly during high-volume discharge. The hydraulic setup is intended for wastewater handling in municipal collection systems.

Mechanical construction features a heavy-duty cast iron body and motor shell with an IP68 protection rating for depths up to 20 m. Longevity is anchored by a double mechanical shaft seal arrangement featuring silicon carbide faces and an oil bath for motor protection. This model includes integrated thermistors and moisture sensors for proactive monitoring and early fault detection of the Class H insulation motor assembly. The architectural casting features a 331 kg net weight and DN 150 connections for high-capacity integration into standard municipal networks.

Features

• Open S-Tube impeller configuration facilitates high-efficiency liquid handling and prevents internal blockages in municipal networks.
• Heavy-duty cast iron housing and motor shell provide the structural durability needed for permanent submerged installations up to 20 m deep.
• Double mechanical shaft seal featuring silicon carbide faces in an oil bath ensures the motor remains shielded from liquid ingress.
• IP68 protection rating confirms the unit is suitable for continuous duty in submerged environments up to 20 m deep.
• Integrated thermistors and moisture sensors enable real-time monitoring to safeguard the Class H insulated motor assembly.
• Four-pole motor operating at 1481 rpm provides the hydraulic torque required for processing high-volume wastewater collection.
• Standardized DN 150 inlet and DN 100 outlet connections allow for high-capacity liquid transfer through municipal pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.