Schneider Electric Altistart ATS23 & ATS46 Soft Starters
Reliable Motor Control Solutions for Industrial Applications
The Schneider Electric Altistart ATS23 and ATS46 Soft Starters are engineered to provide smooth motor acceleration and deceleration, reducing mechanical stress, extending equipment lifespan, and improving overall system efficiency. Available in multiple configurations, these soft starters support motor horsepower ranging from 3 HP to 900 HP at 208V, 230V, and 460V.
With models designed for standard applications and specialized pump control, these starters offer flexibility across various industries, including HVAC, manufacturing, water treatment, and heavy-duty machinery operations.
Ordering Guide (.pdf)
Key Features & Benefits:
✔ Reduced Mechanical Stress – Smooth motor ramp-up prevents sudden torque surges, protecting connected equipment.
✔ Energy Efficiency – Limits inrush currents, reducing energy consumption and improving power factor.
✔ Multiple Enclosure Options – Available in Type 1 and Type 12 enclosures to meet different environmental protection requirements.
✔ Advanced Control – Select models feature full voltage bypass, reversing capability, and heavy-duty ratings for demanding applications.
✔ Versatile Motor Compatibility – Supports motors from 3 HP to 900 HP, making it suitable for a wide range of industrial uses.
Model Selection Guide:
ATS23 Soft Starters (Standard & Pump Control)
- ATS23U70N – 3 HP (230V), 5 HP (460V)
- ATS23D12N – 2 HP (208V), 3 HP (230V), 7.5 HP (460V)
- ATS23D30N – 7.5 HP (208V), 10 HP (230V), 20 HP (460V)
- ATS23C41N – 150 HP (208V), 350 HP (460V)
- ATS23C82N – 350 HP (208V), 400 HP (230V), 800 HP (460V)
ATS46 Soft Starters (Heavy-Duty & Bypass Options)
- ATS46D22N – 5 HP (460V)
- ATS46D47N – 15 HP (230V), 30 HP (460V)
- ATS46C17N – 50 HP (208V), 60 HP (230V), 125 HP (460V)
- ATS46C41N – 125 HP (230V), 300 HP (460V)
- ATS46M12N – 400 HP (230V), 900 HP (460V)
ATS46 Enclosure Options & Ratings
| Option | Class 8636 | Class 8638 | Class 8639 |
|---|---|---|---|
| Enclosure Type | Type 1 or 12 | Type 12 | Type 12 |
| Max HP @ 460V | 400 HP | 500 HP | 500 HP |
| Heavy Duty/Long Start | No | Yes | Yes |
| Full Voltage Bypass | No | Yes* | Yes* |
| Reversing Capability | No | Yes | Yes |
(*Full voltage bypass available only with power circuit Type N, i.e., NPA4N.)
Industry Applications:
🔹 HVAC Systems – Efficient control for large fans and pumps.
🔹 Manufacturing & Industrial Automation – Soft start and smooth operation for motors in production lines.
🔹 Water Treatment Plants – Optimized motor control for pumps and filtration systems.
🔹 Heavy Machinery – Reduces wear and tear on motors in demanding environments.
We ship these products worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance.
| MOTOR Horsepower | OPEN STYLE | ||||
| ATS23 | ATS46 All Applications |
||||
| 208V | 230V | 460V | Standard | Pump | |
| — | 3 | 5 | ATS23U70N | ATS23PU70N | |
| 2 | 3 | 7.5 | ATS23D12N | ATS23D12N | |
| 3 | 5 | 10 | ATS23D16N | ATS23D16N | ATS46D17N |
| 5 | 7.5 | 15 | — | ATS46D22N | |
| 7.5 | 10 | 20 | ATS23D30N | ATS23D30N | ATS46D32N |
| 10 | — | 25 | — | ATS46D38N | |
| — | 15 | 30 | ATS23D44N | ATS23PD44N | ATS46D47N |
| 15 | 20 | 40 | — | ATS46D62N | |
| 20 | 25 | 50 | ATS23D72N | ATS23PD72N | ATS46D75N |
| 25 | 30 | 60 | ATS46D88N | ||
| 30 | 40 | 75 | ATS23C10N | ATS23PC10N | ATS46C11N |
| 40 | 50 | 100 | ATS23C15N | ATS23PC15N | ATS46C14N |
| 50 | 60 | 125 | ATS46C17N | ||
| 60 | 75 | 150 | ATS46C21N | ||
| 75 | 100 | 200 | ATS23C24N | ATS23PC24N | ATS46C25N |
| 100 | 125 | 250 | ATS23C30N | ATS23PC30N | ATS46C32N |
| 125 | 150 | 300 | ATS46C41N | ||
| 150 | — | 350 | ATS23C41N | ATS23PC41N | ATS46C48N |
| — | 200 | 400 | ATS46C59N | ||
| 200 | 250 | 500 | ATS23C58N | ATS23PC41N | ATS46C66N |
| 250 | 300 | 600 | ATS46C79N | ||
| 350 | 400 | 800 | ATS23C82N | ATS23PC82N | ATS46M10N |
| 400 | 450 | 900 | ATS23M12N | ATS23PM12N | ATS46M12N |
| ATS46 Options | Class 8636 | Class 8638 | Class 8639 |
| Enclosure | Type 1 or 12 | Type 12 | Type 12 |
| Max HP @ 460 V | 400 | 500 | 500 |
| Heavy Duty/Long Start | N | Y | Y |
| Full Voltage Bypass | N | Y* | Y* |
| Reversing | N | Y | Y |
| Date Available | Sept. ‘97 | May ‘97 | May ‘97 |
| * Full voltage bypass only available w/ power circuit N (i.e. Type NPA4N). | |||
| The Rule | Exceptions | |
| Class | No change in Class 8638=ALTISTART w/ fusible disconnect in Type 12 enclosure |
New classes available 8639=ALTISTART w/ circuit breaker in Type 12 enclosure 8636=ALTISTART w/o disconnect in Type 1 or 12 enclosure |
| Type | Change 1st letter from P to N Same format for Type number |
More models available Heavy duty rating also available (Type L) |
| Forms | No change in forms | Some ATS23 forms not needed D1: Pump option not required — ATS46 soft start performs better than ATS23 pump version without $750 adder Z23: Braking contactor not required — ATS46 soft start performs braking internally Y444: Phase loss relay not required — ATS46 soft start has phase loss protection, even with a shorting contactor |