Grundfos S1.80.125.400.4.62H.C.374 Cast Iron 43 kW Sewage Pump for Sewage Transfer with 1-Channel Impeller

With a maximum head of 57.5 m and flow capacity of 6600 L/min, the Grundfos S1.80.125.400.4.62H.C.374.G.N.D.513GPA submersible sewage pump is suited to wastewater, process water and unscreened raw sewage transfer. The Variant C cooling jacket enables continuous submerged operation at depths up to 20 m in municipal collection and industrial effluent applications.

Power comes from a 43 kW motor (P2) operating at 1464 rpm from a 415 V three-phase supply, drawing 86 A with 89% efficiency at both full and 3/4 load. The 374 mm impeller delivers the specified head and flow characteristics, with DN125 outlet and DN80 inlet connections carrying a PN10 pressure rating.

Hydraulic performance is achieved through a 1-channel cast iron impeller with 80 mm free passage, with the impeller diameter and channel configuration matched to the H lifting height class requirements of this Range 62 model. The single-channel design provides stable hydraulic behaviour across the operating range.

Cast iron construction with IP68 enclosure and Class F insulation provides submerged durability, while the primary silicon carbide and secondary silicon carbide-carbon shaft seals prevent liquid ingress. Integrated moisture sensors are fitted as standard, with the pump supplied on 15 m of H07RN-F AT cable and supporting Star/Delta starting.

FEATURES

• Range 62 Motor Design: The motor frame incorporates standardized external and internal dimensions, cooling system configuration, shaft seal arrangement and bearing specification common to all pumps in the Range 62 series.
• 1-Channel Cast Iron Impeller: The single-channel impeller design provides stable hydraulic performance across the operating range while maintaining efficient solids handling capability for municipal wastewater applications.
• 80 mm Free Passage: The internal clearance through the impeller and volute allows solids and unscreened sewage particulates to pass without blocking the hydraulic flow path during operation.
• DN125 / DN80 Connection: The outlet connection is sized at DN125 with a PN10 pressure rating, while the inlet connection is DN80, matching the hydraulic design requirements of this configuration.
• Variant C Cooling Jacket: The integrated cooling jacket surrounds the motor stator to dissipate heat during continuous submerged operation, maintaining stable motor temperatures in wet well installations.
• IP68 Enclosure Protection: The motor housing is fully sealed against permanent submersion, with the IP68 rating confirming suitability for continuous operation at depths up to 20 m.
• Silicon Carbide Shaft Seals: The primary shaft seal uses silicon carbide faces while the secondary seal employs a silicon carbide-carbon combination, providing two-stage protection against liquid ingress into the motor compartment.
• Integrated Moisture Sensors: Sensors are fitted within the motor housing to detect the presence of moisture, providing early indication of potential seal degradation or liquid ingress during service.

IMPORTANT: Bulk freight charges apply. Please contact us for a freight quote before ordering.