Lafert Single-Phase Motors – AMM, AMME, AMMHE and AMD
Lafert single-phase capacitor motors for 230 V 50 Hz, 0.09 – 2.2 kW, frame 56 – 100: standard AMM, high-starting-torque AMME with electronic starting device, IE2 AMMHE / AMMEHE, and dual-voltage AMD / AMDE for 115 / 230 V.
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Which single-phase series?
| Series | Capacitors | Starting torque | Efficiency | Supply |
|---|---|---|---|---|
| AMM | Run capacitor | Low (0.2 – 1.3 × MN) | Standard | 230 V 50 Hz |
| AMME | Run + start capacitor, electronic starting device SE | High (1.0 – 3.4 × MN) | Standard | 230 V 50 Hz |
| AMMHE | Run capacitor | Low (0.3 – 1.0 × MN) | IE2 | 230 V 50 Hz |
| AMMEHE | Run + start capacitor | High (1.0 – 3.2 × MN) | IE2 | 230 V 50 Hz |
| AMD / AMDE | Run (+ start) capacitor | Low / high | Standard | 115 / 230 V 50 Hz |
Choose the start-capacitor version (AMME, AMMEHE, AMDE) for loads that start under torque – compressors, conveyors, pumps against pressure. The time between stop and restart must be more than 15 seconds. For fans and small centrifugal pumps the run-capacitor version is enough.
AMMHE / AMMEHE – IE2 single-phase, 230 V 50 Hz
Same ratings for both; starting torque shown for each version. ** available only as AMMEHE.
2 pole – 3000 rpm (14 models)
| Type | kW | rpm | In @230 V (A) | IE2 η | MA/MN AMMHE | MA/MN AMMEHE | Weight (kg) |
|---|---|---|---|---|---|---|---|
| AMMHE 56Z AA 2 | 0.12 | 2700 | 0.9 | 53.6% | 0.9 | 2.6 | 3.9 |
| AMMHE 63Z XA 2 | 0.12 | 2850 | 0.9 | 53.6% | 0.9 | 1.8 | 5.0 |
| AMMHE 63Z AA 2 | 0.18 | 2820 | 1.3 | 60.4% | 1.0 | 1.8 | 5.1 |
| AMMHE 63Z BA 2 | 0.25 | 2780 | 1.7 | 64.8% | 0.9 | 1.9 | 5.7 |
| AMMHE 71Z AA 2 | 0.37 | 2800 | 2.4 | 69.5% | 0.9 | 2.1 | 8.5 |
| AMMHE 71Z BA 2 | 0.55 | 2890 | 3.2 | 74.1% | 0.7 | 2.2 | 8.6 |
| AMMHE 80Z AA 2 | 0.75 | 2850 | 4.3 | 77.4% | 0.8 | 3.2 | 11.8 |
| AMMHE 80Z BA 2 | 1.1 | 2790 | 6.4 | 79.6% | 0.7 | 2.8 | 12.0 |
| AMMHE 90S AA 2 | 1.1 | 2865 | 6.5 | 79.6% | 0.4 | 2.4 | 17.3 |
| AMMHE 90L BA 2 | 1.5 | 2870 | 8.5 | 81.3% | 0.5 | 2.5 | 18.7 |
| AMMHE 90L CA 2 | 1.8 | 2840 | 9.9 | 82.2% | 0.5 | 1.8 | 19.3 |
| AMMHE 90L DA 2 | 2.2 | 2920 | 11.8 | 83.2% | 0.4 | 1.4 | 19.7 |
| AMMHE 100L XA 2 | 1.8 | 2900 | 9.5 | 82.2% | 0.4 | 2.1 | 26.5 |
| AMMHE 100L AA 2 | 2.2 | 2890 | 11.6 | 83.2% | 0.4 | 2.2 | 26.6 |
4 pole – 1500 rpm (11 models)
| Type | kW | rpm | In @230 V (A) | IE2 η | MA/MN AMMHE | MA/MN AMMEHE | Weight (kg) |
|---|---|---|---|---|---|---|---|
| AMMHE 63Z AA 4 | 0.12 | 1360 | 0.9 | 59.1% | 0.8 | 1.8 | 4.9 |
| AMMHE 63Z BA 4 | 0.18 | 1340 | 1.3 | 64.7% | 0.5 | 2.3 | 5.0 |
| AMMHE 71Z XA 4 | 0.18 | 1390 | 1.2 | 64.7% | 0.7 | 2.0 | 8.5 |
| AMMHE 71Z AA 4 | 0.25 | 1395 | 1.6 | 68.5% | 0.5 | 2.9 | 8.9 |
| AMMHE 80Z AA 4 | 0.37 | 1445 | 2.2 | 72.7% | 0.4 | 2.1 | 12.8 |
| AMMHE 80Z BA 4 | 0.55 | 1450 | 3.4 | 77.1% | 0.4 | 2.3 | 13.1 |
| AMMHE 90S XA 4 | 0.75 | 1440 | 4.2 | 79.6% | 0.4 | 1.9 | 17.6 |
| AMMHE 90L AA 4 | 1.1 | 1445 | 6.0 | 81.4% | 0.4 | 2.4 | 18.0 |
| AMMHE 90L BA 4 | 1.5 | 1435 | 8.3 | 82.8% | 0.3 | 1.8 | 20.0 |
| AMMEHE 100L AA 4** | 1.8 | 1470 | 9.8 | 83.5% | – | 1.4 | 25.0 |
| AMMEHE 100L BA 4** | 2.2 | 1465 | 11.9 | 84.3% | – | 1.0 | 27.5 |
AMM – standard single-phase, 230 V 50 Hz
AMME (with start capacitor) is built on the same platform, 0.12 – 2.2 kW in 2 and 4 pole and 0.15 – 1.5 kW in 6 pole, with starting torque 1.0 – 3.4 × MN.
2 pole – 3000 rpm (12 models)
| Type | kW | rpm | In @230 V (A) | η | MA/MN | Weight (kg) |
|---|---|---|---|---|---|---|
| AMM 56Z AA 2 | 0.12 | 2600 | 1.2 | 47% | 1.3 | 3.0 |
| AMM 63Z AA 2 | 0.18 | 2710 | 1.2 | 58.5% | 1.2 | 5.0 |
| AMM 63Z BA 2 | 0.25 | 2760 | 1.7 | 68.6% | 1.0 | 5.5 |
| AMM 71Z AA 2 | 0.37 | 2780 | 3.1 | 57.6% | 0.8 | 7.1 |
| AMM 71Z BA 2 | 0.55 | 2740 | 3.9 | 69% | 0.7 | 8.5 |
| AMM 80Z AA 2 | 0.75 | 2800 | 5.3 | 65% | 0.6 | 11.4 |
| AMM 80Z BA 2 | 1.1 | 2730 | 6.5 | 74% | 0.5 | 11.8 |
| AMM 90S AA 2 | 1.1 | 2830 | 7.5 | 68% | 0.4 | 15.3 |
| AMM 90L BA 2 | 1.5 | 2835 | 9.3 | 73% | 0.5 | 17.3 |
| AMM 90L CA 2 | 1.8 | 2790 | 10.8 | 73% | 0.6 | 18.7 |
| AMM 90L DA 2 | 2.2 | 2770 | 14.6 | 73% | 0.2 | 19.3 |
| AMM 100L AA 2 | 2.2 | 2795 | 12.8 | 75% | 0.4 | 24.5 |
4 pole – 1500 rpm (12 models)
| Type | kW | rpm | In @230 V (A) | η | MA/MN | Weight (kg) |
|---|---|---|---|---|---|---|
| AMM 56Z AA 4 | 0.09 | 1340 | 1.0 | 45% | 0.5 | 3.5 |
| AMM 63Z AA 4 | 0.12 | 1385 | 1.0 | 50% | 0.7 | 4.5 |
| AMM 63Z BA 4 | 0.18 | 1280 | 1.6 | 50% | 0.8 | 4.9 |
| AMM 71Z AA 4 | 0.25 | 1270 | 2.5 | 52.1% | 0.7 | 7.2 |
| AMM 71Z BA 4 | 0.37 | 1370 | 2.8 | 62% | 0.8 | 8.5 |
| AMM 80Z AA 4 | 0.37 | 1390 | 2.8 | 60% | 0.5 | 9.8 |
| AMM 80Z BA 4 | 0.55 | 1390 | 4.0 | 67% | 0.5 | 11.3 |
| AMM 80Z CA 4 | 0.75 | 1445 | 4.9 | 73% | 0.3 | 12.8 |
| AMM 90L AA 4 | 1.1 | 1415 | 7.4 | 70% | 0.5 | 15.4 |
| AMM 90L BA 4 | 1.5 | 1430 | 9.0 | 79% | 0.5 | 17.6 |
| AMM 100L AA 4 | 1.8 | 1380 | 12.0 | 70% | 0.3 | 22.8 |
| AMM 100L BA 4 | 2.2 | 1450 | 12.5 | 81% | 0.4 | 23.8 |
6 pole – 1000 rpm (7 models)
| Type | kW | rpm | In @230 V (A) | η | MA/MN | Weight (kg) |
|---|---|---|---|---|---|---|
| AMM 71Z AA 6 | 0.18 | 840 | 1.9 | 48% | 0.8 | 6.3 |
| AMM 80Z AA 6 | 0.25 | 900 | 2.2 | 56% | 0.3 | 8.8 |
| AMM 80Z BA 6 | 0.37 | 925 | 2.8 | 60% | 0.4 | 10.0 |
| AMM 90L AA 6 | 0.55 | 950 | 3.4 | 72% | 0.4 | 16.5 |
| AMM 90L BA 6 | 0.75 | 890 | 4.8 | 71% | 0.5 | 18.0 |
| AMM 100L AA 6 | 1.1 | 950 | 7.1 | 69% | 0.2 | 19.0 |
| AMM 100L BA 6 | 1.5 | 870 | 10.0 | 66% | 0.4 | 22.5 |
AMD / AMDE – dual voltage 115 / 230 V
Single-phase motors that can be connected for 115 V or 230 V 50 Hz: 0.11 – 2.2 kW in 2 and 4 pole and 0.15 – 1.5 kW in 6 pole, frame 63 – 100. AMDE adds the start capacitor and electronic starting device for high starting torque. Typical for equipment shipped to markets with different supply voltages.
How to read a Lafert single-phase type
Construction
| Feature | Standard design |
|---|---|
| Degree of protection | IP55 |
| Terminal box | Plastic UL 94 V0, on top (left / right possible), 1 × M16 (56 – 71) or 1 × M20 (80 – 100) |
| Capacitors | Run capacitor to EN 60252-1 in the terminal box; electrolytic start capacitor (duty 3 s ON / 3 min OFF) on E versions |
| Mounting | IM B3, B5, B14 (small and large B14 flange) |
| Removable feet | Frame 71 – 100, for easy change of terminal box position |
| Shaft | 9 j6 (56) to 28 j6 (100) |
Frequently asked questions
What is the difference between AMM and AMME?
AMM has only a run capacitor and low starting torque. AMME adds a start capacitor switched by an electronic starting device, giving 1.0 – 3.4 times rated torque at start.
Which single-phase motor for a compressor?
A start-capacitor version: AMME, or AMMEHE if you need IE2 efficiency.
Are Lafert single-phase motors available for 60 Hz?
The catalogue ratings are for 230 V 50 Hz. For 60 Hz IE2 single-phase motors please ask us with your voltage.
How do I reverse the direction of rotation?
On single-voltage motors by swapping the ends of the main winding; on dual-voltage motors by swapping the auxiliary winding ends, as shown in the connection diagram in the terminal box.
Need Lafert single-phase motors?
Send us the type from the nameplate, or kW, poles and the machine it drives, and we reply with a quotation.
Data from the Lafert catalogue 10-260/24 at rated voltage. Technical data are subject to change by the manufacturer; final values are confirmed with the quotation. Lafert is a trademark of Lafert S.p.A.