Roll over image to zoom
SKU: 98626064
Grundfos SL1.100.150.55.4.50B.C Cast Iron 4-Pole Wastewater Pump for Collection Networks with S-Tube Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Collection systems and large-scale drainage tasks are the focus of the Grundfos SL1.100.150.55.4.50B.C, certified under CE EN12050-1. This cast iron submersible pump is built for permanent installation in civil infrastructure wet wells. It is intended for handling raw wastewater containing large solids in municipal and industrial collection networks.
A 5.5 kW 4-pole motor running at 1463 rpm on a 3 x 415V supply with a rated current of 10.9 Amps powers the pump. It achieves a maximum head up to 16.6 m and maximum flow up to 4332 L/min. The motor is designed for continuous S1 duty in untreated wastewater containing solids at temperatures up to 40°C. The motor is cooled by the surrounding pumped liquid during normal submerged operation.
Handling of untreated wastewater is facilitated by an S-tube impeller providing a 100 mm free passage while helping reduce the risk of clogging. The unit is equipped with a DN 150 inlet and a 6" (150 mm) outlet with DIN flange connections. This single-vane hydraulic path supports the transfer of raw effluents in demanding collection systems.
Built with an EN-GJL-250 cast iron pump housing and motor casing, the unit includes a double SIC/SIC mechanical shaft seal system. Integrated PTC sensors and moisture sensors are used for seal and motor monitoring. Protection also includes thermal switches in the windings, 10 metres of LYNIFLEX power cable, and an IP68 enclosure rating for submerged service. The pump is suitable for installation depths up to 7 metres.
FEATURES
- S-tube impeller with 100 mm free passage for processing wastewater with high solids content.
- 5.5 kW 4-pole motor operating at 1463 rpm on a 3 x 415V three-phase supply with 10.9 Amps rated current.
- DN 150 inlet and 6" (150 mm) discharge connection for efficient large-scale fluid relocation.
- Double mechanical SIC/SIC seals in an oil chamber for redundant moisture defence for the motor.
- Integrated PTC sensors and moisture detection for advanced motor health and active thermal monitoring.
- Built-in thermal switches within the stator windings for automatic protection against electrical damage.
- 10-metre rugged LYNIFLEX power cable and IP68 enclosure for reliable operation in deep wet wells.
- CE EN12050-1 certified for use in wastewater collection networks and civil infrastructure drainage systems.
SPECIFICATIONS
| Max Flow | 4332 L/Min |
| Max Head | 16.6 m |
| Power | 5.5 kW / 415v |
| Rated Current | 10.9 Amps |
| Suitable For | Collection Systems |
| Body Material | Cast iron |
| Liquid Temperature | Maximum 40°C |
| Inlet Size | 150 mm |
| Outlet Size | 150 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
What are the electrical specifications, operating voltage feed, and full-load current for this pump?
Operational electrical specs for Grundfos SL1.100.150.55.4.50B.C denote a 5.5 kW motor fed by a three-phase 415 V line at 10.9 Amps.
How does the single-channel S-tube design enable large fibrous debris to pass without snagging?
Large fibrous debris passes through SL1.100.150.55.4.50B.C without snagging due to its single-channel S-tube geometry providing a 100 mm path.
Which guide rail installation hardware secures this heavy unit to permanent outfall lines?
Permanent outfall lines are secured to SL1-100-150-55-4-50B-C through an automatic coupling system that seals firmly against the discharge elbow.
Across centralized plant intake risers, what maximum fluid throughput is discharged into treatment facilities?
Intake risers feeding treatment plants receive a maximum fluid throughput of 4332 L/Min from SL1 100 150 55 4 50B C.
Across centralized wastewater intake risers, what peak discharge head does this pump develop?
Centralized intake risers operate with SL1/100/150/55/4/50B/C developing a peak discharge head of 16.6 m.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us











