Description
The Grundfos 81U15336 is a Grundfos Accessory / Spare Part / Control. Genuine Grundfos accessory, control component, spare part, or sensor. Rated 440-480DV, 3.0-Phase, 60 Hz.
Genuine Grundfos Part
OEM component engineered and manufactured to Grundfos specifications. Maintains pump performance and warranty coverage.
Full Traceability
Genuine Grundfos parts carry manufacturer traceability from production through delivery. No counterfeit risk.
Authorized Source
PumpStop is an authorized Grundfos distributor. All parts are genuine — not aftermarket, not surplus.
Confirm Compatibility
Always verify part number against your pump model number and serial number before ordering. Contact PumpStop for parts identification assistance.
Technical Support Available
PumpStop technical team can identify correct parts from pump nameplate data, serial number, or model code. Call (781) 281-8905 or chat.
Contact for Availability
Parts availability varies. Contact PumpStop to confirm stock, lead time, and pricing before placing an order.
| Model Number | 81U15336 |
| Product Series | ACC |
| Series Description | Grundfos Accessory / Spare Part / Control |
| Power | 60HP |
| Voltage | 440-480DV |
| Phase | 3.0-Phase |
| Frequency | 60 Hz |
| Motor Speed | 3570rpm |
| Full Load Current | 69A |
| Motor Type | INNOMOTICS |
| Motor Protection | PTC |
| Motor Efficiency Class | IE3 / NEMA Premium |
| Motor Efficiency | IE3 93,6% |
| Insulation Class | F |
| Protection Class (IP) | TEFC |
| Max Ambient Temperature | 131°F |
| Min Ambient Temperature | -4°F |
| Electrical | Verify supply voltage, phase, and frequency match nameplate before installation: 440-480DV, 3.0-Phase, 60 Hz. |
| Temperature limits | Do not exceed max fluid temperature per nameplate or max ambient temperature 131°F. Exceeding limits damages seals and motor insulation. |
| Dry running | Do not run dry. ACC pumps use the pumped fluid to lubricate the shaft seal. Dry running destroys the seal within seconds. Install dry-run protection on all automatic installations. |
| Maintenance | Refer to the Grundfos Installation and Operating Manual (IOM) for correct installation, commissioning, and maintenance. Contact PumpStop for documentation. |
- Approvals for motor
- CE
- Bearing insulation type N-end
- N
- Breakdown torque
- 330-330 %
- Built-in motor protection
- PTC
- Cable gland entry
- 2xM50x1
- Colour/Type
- Black
- Cooling
- IC 411
- Cos phi 1/2
- 0.8
- Cos phi 3/4
- 0.87
- Diameter
- 2.17 in
- Enclosure class (IEC 34-5)
- IP55
- Energy approvals for motor
- CE
- Flange size for motor
- FF400
- IE efficiency
- IE3 94
- IE Efficiency class
- IE3
- Insulation class (IEC 85)
- F
- Length of shaft end
- 4.33 in
- Locked-rotor torque
- 240-240 %
- Mains frequency
- 50 Hz
- Maximum current consumption
- 81.9/47.3 A
- Moment of inertia
- 6.289 lb ft²
- Motor
- FF400
- Motor efficiency at 1/2 load
- 94.4-94.4 %
- Motor efficiency at 3/4 load
- 94.5-94.5 %
- Motor efficiency at full load 1
- 94.0-94.0 %
- Motor type
- SIEMENS
- Mount. design. acc. IEC 34-7
- IM B5
- Net weight
- 739.0 lb
- Number of poles
- 2
- Power factor 1
- 0.89
- R1 ohm
- 0.108 ohm
- Range of ambient temperature
- -4 .. 131 °F
- Rated current
- 78/45 A
- Rated full-load torque 1
- 120-120 Nm
- Rated power - P2
- 45 kW
- Rated speed
- 2960 rpm
- Rated voltage
- 3 x 380-420D/660-725Y V
- Shaft diameter
- 2.17 in
- Starting current
- 690-690 %
- Thermal protec
- external
- Tropic protec
- NO
- Type
- Black
- Winding 2
- PHASE 2
- Winding 3
- PHASE 3
Dimensional Drawing
Wiring Diagram
