Grundfos SEG.40.12.2.50B 96075905 415v Submersible Grinder Pump 1.2kW DN40/50 #4525

Grundfos SEG.40.12.2.50B – 1.2kW 415V Submersible Grinder Pump #4525

The Grundfos SEG range are non-self-priming, single-stage centrifugal sewage pumps with a horizontal discharge port, specifically designed for pumping wastewater containing discharge from toilets. The pump is equipped with an integrated grinder system for reliable operation in pressurised sewage applications.

This unit is supplied as new, unused surplus stock and has not been installed. Minor cosmetic marks may be present from storage.

• Model: SEG.40.12.2.50B
• Grundfos part number: 96075905
• Motor power: 1.2 kW
• Voltage: 3-phase 400–415 V DOL
• Outlet connection: DIN DN40 flange
• Poles: 2-pole motor
• Protection rating: IP68
• Insulation class: F
• Supplied with 2 year guarantee

Need help confirming suitability?
Call us on 01803 220416 for technical advice.

Typical Applications

• Pumping wastewater containing discharge from toilets
• Pressurised sewage systems where small diameter mains are required
• Villages and sparsely populated areas without gravity sewer
• Farm and rural installations
• Sites with large terrain level differences

Key Technical Features

• Integrated grinder system to grind destructible solids into small pieces for transport through small-diameter pipework
• Robust cast iron hydraulic construction with corrosion-resistant stainless steel service clamp
• SmartTrim system for easy impeller clearance adjustment to help maintain efficiency over the pump lifespan
• Thermal switches built into the motor windings providing protection against overheating

Delivery & Shipping

• Next working day dispatch available (order before 4pm)
• Same-day courier available – please call for a quote
• UK and international delivery available
• International shipping costs confirmed after checkout

Manufacturer specification:
Full technical details can be found on the official Grundfos product page:
View Grundfos SEG.40.12.2.50B product information

Frequently Asked Questions

What is the Grundfos SEG pump designed for?

Grundfos SEG grinder pumps are submersible sewage pumps with an integrated grinder system. They are designed to grind destructible solids into small pieces so wastewater containing solids and fibres can be transported through smaller diameter pressure mains.

What does the model designation SEG.40.12.2.50B mean?

• SE – Grundfos sewage pump series
• G – Grinder system in the pump inlet (impeller type)
• 40 – Nominal diameter of outlet port (DN40)
• 12 – Code relating to output power (≈1.2 kW)
• 2 – 2-pole motor
• 5 – 50 Hz
• 0B – 400–415 V DOL supply voltage and starting method

What discharge connection does this pump have?

This pump is supplied with a standard DIN DN40 flange. Because it follows the DIN standard, compatible fittings, guide claws or accessories from Grundfos or other manufacturers can be connected to the outlet.

Where are SEG pumps typically used?

SEG pumps are ideal in situations where a gravity sewer is not available or practical, such as:

• Sparsely populated areas and villages
• Farm or rural installations
• Sites with large terrain level differences
• Pressurised sewer systems where small diameter mains are required

What installation options are available?

The SEG range is designed for two submerged installation types:

• Submerged installation on auto-coupling systems
• Submerged free-standing installation

Does the pump have motor protection?

Yes. Thermal switches are built into the motor windings to provide protection against overheating. These must be connected to a suitable control panel in accordance with Grundfos instructions.

How durable is the construction?

The pump is manufactured from wear-resistant materials including cast iron and stainless steel. A corrosion-resistant stainless steel clamp secures the motor to the pump housing and allows easy servicing of the unit.

What is the SmartTrim system?

SmartTrim allows simple adjustment of the impeller clearance without dismantling the pump, helping to maintain maximum efficiency throughout the pump’s lifespan.

Why choose a grinder pump?

A grinder pump enables wastewater to be pumped through small pressure mains where gravity drainage is not practical, making it suitable for rural properties and sites with long or rising discharge pipework.

Do you offer technical support?

Yes — we can help confirm compatibility with existing pipework, guide-rail systems and control panels. Call 01803 220416 for advice before purchase.

About Our Stock

We specialise in supplying new and unused surplus pumps, allowing us to offer premium equipment at highly competitive prices. All pumps are inspected prior to dispatch and supplied with guarantee.