ES - Design 03 EN 733 Centrifugal Pump by Ritz
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The Ritz ES - Design 03 EN 733 is a horizontal standard single-stage centrifugal pump unit designed in accordance with EN 733. It features a 125 mm suction port and a 100 mm discharge port, paired with a 200 mm nominal impeller diameter and hydraulic form .2. The pump casing, suction-side wear ring, and impeller are constructed from EN-GJL-250 and EN-GJL-200 cast iron, complemented by a 1.4021 pump shaft and a single-acting mechanical seal made of SiC-SiC and Viton, rated for a maximum of 110°C and 10 bar. Driven by a Siemens IE3 Premium Efficiency 75 kW three-phase squirrel-cage motor (model 280S/75/2-/B35) operating at 2975 RPM, the unit delivers reliable fluid transfer. The assembly includes a SK 152 disc coupling, standard motor bearings with grease lubrication, PTC thermistor temperature sensors, and an EN-GJL-200 motor housing finished in sky blue resembling RAL 5015.
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Characteristics
| Manufacturer | Ritz |
|---|---|
| Part number | ES - Design 03 EN 733 |
| Inner Code | 1112637 |
Technical specification
| Product type | Centrifugal Pump Unit with IE3 Motor |
|---|---|
| HS-Code | 84137059 |
| Design | EN 733 |
| Discharge nozzle DN | 100 |
| Suction nozzle DN | 125 |
| Nominal impeller diameter | 200 mm |
| Stages | 1-stage |
| Pump casing | EN-GJL-250 |
| Suction-side wear ring | EN-GJL-200 |
| Impeller | EN-GJL-200 |
| Pump shaft | 1.4021 |
| Seal type | Single-acting mechanical seal SiC-SiC, Viton, max. 110°C/10 bar |
| Shaft diameter (pump) | 32 mm |
| Flange diameter | 550 mm |
| Color | Sky blue, similar to RAL 5015 |
| Coupling | Disc coupling SK 152, 2-pole |
| Motor manufacturer | Siemens |
| Motor type | Squirrel-cage motor |
| Motor mounting | IM B 35 |
| Poles | 2 |
| Speed | 2975 rpm |
| Power P2 | 75 kW |
| Power P1 | 79.2 kW |
| Frequency | 50 Hz |
| Operating voltage | 400 V |
| Motor size | 280S |
| Motor efficiency class | IE3 - Premium Efficiency |
| Insulation class | Iso F |
| Protection class | IP 55 |
| Temperature monitoring | 3 PTC thermistor sensors |
| Motor casing | EN-GJL-200 |
| Shaft diameter (motor) | 65 mm |
| Torque | 241 Nm |
| Sound pressure LPFA | 73 dB |
| Nominal current | 128 Amp |
| Direct starting current | 870.4 Amp |
| Star-delta starting current | 290.1 Amp |
| Efficiency 4/4 load | 94.7 % |
| Power factor 4/4 load | 0.89 |
| Supplier motor type | 1LE1503-2DA0 |