three-phase motor, IE1
RN 90Sb2
uprated
- 1.85Power, kW
- 2860Speed, rpm
- 2Poles
- 90SIEC frame
- 3.95Amps at 400 V

Specification
- Rated output
- 1.85 kW
- Speed
- 2860 rpm (2-pole)
- Supply
- 230/400 V 50 Hz, three-phase. Also wound for 60 Hz and other voltages to order; the figures here are at 50 Hz.
- Current at 400 V
- 3.95 A
- Efficiency
- 78.7%, IE1
- Power factor
- 0.86
- Starting current
- 6.2 × rated
- Torque
- 6.1 Nm
- Frame
- IEC 90S
- Shaft end
- 24 × 50 mm
- Large flange (B5)
- FF165
- Small flange (B14)
- FT115
- Weight (B3)
- 15 kg
Uprated: Nicolini mark this power as one IEC does not list for the frame. It gives more power in a smaller frame, at lower efficiency.
Pumps it drives
Pumps rated at this motor's speed that need no more than 1.85 kW, where this is the smallest motor that does the job.
Interpump 51 series 4
Bertolini WBL 1
Flanges and couplings
For an IEC 90 frame with a 24 mm shaft, bolting to the small flange (B14). Pick the one made for your pump series.
| Part number | Description | For pump series |
|---|---|---|
| 1.099-528.0 | Hawk motor flange, IEC 90 B14 | NHDP Car Wash, NHDP 120, NHDP 150, NHDP 200, NHDP Chemical, NHDP Stainless Steel Chemical |
| 1.099-534.0 | Hawk motor flange, IEC 90 B14 | CHS 120 |
| ZF070 | Interpump motor flange, IEC 90 B14 | E1, SS1, 44, 58VHT, E2, C2W, 50 and 51 |
| 1.099-542.0 | Hawk flexible coupling, IEC 90, 24 mm motor to 24 mm pump | NHDP Car Wash, NHDP 120, NHDP 150, NHDP 200, NHDP Chemical, NHDP Stainless Steel Chemical, CHD 200, CHS 120 |
| 1.099-544.0 | Hawk flexible coupling, IEC 90, 24 mm motor to 24 mm pump | NMT, NMT Car Wash, NMT High Temperature, NMT Nickel-Plated, NMT - Car Wash Heavy Duty, NMT Chemical, NMT Stainless Steel Chemical |
| ZG070 | Interpump flexible coupling, IEC 90, 24 mm motor to 24 mm pump | E1, SS1, 44, 58VHT, E2, C2W and 50 |
| ZGWW75 | Interpump flexible coupling, IEC 90, 24 mm motor to 24 mm pump | 51 |
Starter
Iskra parts for a direct-on-line starter at 400 V. Choose the contactor coil to match your control voltage.
Contactor
KNL9 contactors, rated 4 kW AC-3 at 400 V
| Coil | Type | Iskra code | Suppliers |
|---|---|---|---|
| 24 V AC B7 | KNL9-01 1NC | 030050615000 | |
| 24 V AC B7 | KNL9-10 1NO | 030050616000 | |
| 42 V AC D7 | KNL9-01 1NC | 030050633000 | |
| 42 V AC D7 | KNL9-10 1NO | 030050634000 | |
| 48 V AC E7 | KNL9-01 1NC | 030050635000 | |
| 48 V AC E7 | KNL9-10 1NO | 030050636000 | |
| 110-125 V AC F7 | KNL9-01 1NC | 030050637000 | |
| 110-125 V AC F7 | KNL9-10 1NO | 030050638000 | |
| 208 V AC | KNL9-01 1NC | 030050819000 | |
| 220-240 V AC M7 | KNL9-01 1NC | 030050475000 | |
| 220-240 V AC M7 | KNL9-10 1NO | 030050474000 | |
| 380-415 V AC Q7 | KNL9-01 1NC | 030050639000 | |
| 380-415 V AC Q7 | KNL9-10 1NO | 030050640000 | |
| 440-460 V AC R7 | KNL9-10 1NO | 030050919000 | |
| 480-520 V AC S7 | KNL9-01 1NC | 030050641000 | |
| 480-520 V AC S7 | KNL9-10 1NO | 030050642000 |
Overload protection
Set to the motor's full-load current, 3.95 A.
Other motors in this range
RN 63a2RN 63b2RN 63c2RN 71a2RN 71b2RN 71c2RN 80a2RN 80b2RN 80c2RN 90La2RN 90Lb2RN 90Sa2RN 100a2RN 100b2RN 112a2RN 112b2RN 112c2RN 132Ma2RN 132Mb2RN 132Sa2RN 132Sb2RN 160La2RN 160Lb2RN 160Ma2RN 160Mb2RN 180La2RN 180Ma2RN 200a2RN 200b2