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Description
ATS48C21QMain Range of product Altistart 48 Product or component type Soft starter Product destination Asynchronous motors Product specific application Heavy duty industry and pumps Device short name ATS48 Power supply voltage 230 415 V 15 10 % Motor power kW 55 kW at 230 V connection in the motor supply line for standard applications 90 kW at 230 V connection to the motor delta terminals for severe applications 90 kW at 400 V connection in the motor supply
Main
| Range of product | Altistart 48 |
| Product or component type | Soft starter |
| Product destination | Asynchronous motors |
| Product specific application | Heavy duty industry and pumps |
| Device short name | ATS48 |
| Power supply voltage | 230...415 V - 15...10 % |
| Motor power kW | 55 kW at 230 V connection in the motor supply line for standard applications 90 kW at 230 V connection to the motor delta terminals for severe applications 90 kW at 400 V connection in the motor supply line for severe applications 110 kW at 230 V connection to the motor delta terminals for standard applications 110 kW at 400 V connection in the motor supply line for standard applications 132 kW at 400 V connection to the motor delta terminals for severe applications 160 kW at 400 V connection to the motor delta terminals for standard applications 45 kW at 230 V connection in the motor supply line for severe applications |
| Power dissipation in W | 468 W for severe applications 580 W for standard applications |
| Utilisation category | AC-53A |
| Type of start | Start with torque control (current limited to 5 In) |
| Icl nominal current | 210 A for connection in the motor supply line for severe applications 210 A for connection in the motor supply line for standard applications 364 A for connection to the motor delta terminals for severe applications 364 A for connection to the motor delta terminals for standard applications |
| IP degree of protection | IP00 |
Complementary
| Assembly style | With heat sink |
| Function available | External bypass (optional) |
| Power supply voltage limits | 195…456 V |
| Power supply frequency | 50...60 Hz - 5...5 % |
| Power supply frequency limits | 47.5...63 Hz |
| Device connection | To the motor delta terminals In the motor supply line |
| Factory setting current | 195 A |
| [Uc] control circuit voltage | 220 - 15 % to 415 + 10 %, 50/60 Hz |
| Control circuit consumption | 50 W |
| Discrete output number | 2 |
| Discrete output type | (LO1) logic output 0 V common configurable (LO2) logic output 0 V common configurable (R1) relay outputs fault relay NO (R2) relay outputs end of starting relay NO (R3) relay outputs motor powered NO |
| Output absolute accuracy precision | +/- 5 % |
| Minimum switching current | 10 mA at 6 V DC for relay outputs |
| Maximum switching current | Logic output 0.2 A at 30 V DC Relay outputs 1.8 A at 230 V AC inductive load, cos phi = 0.5 20 ms Relay outputs 1.8 A at 30 V DC inductive load, cos phi = 0.5 20 ms |
| Discrete input number | 5 |
| Discrete input type | PTC, 750 Ohm at 25 °C (Stop, Run, LI3, LI4) logic, <= 8 mA 4300 Ohm |
| Discrete input voltage | 24 V <= 30 V |
| Discrete input logic | Positive logic Stop, Run, LI3, LI4 at State 0: < 5 V and <= 2 mA at State 1: > 11 V, >= 5 mA |
| Starting current | 0.4...1.3 Icl adjustable |
| Analogue output type | Current output AO: 0-20 mA or 4-20 mA, impedance <500 Ohm |
| Communication port protocol | Modbus |
| Connector type | 1 RJ45 |
| Communication data link | Serial |
| Physical interface | RS485 multidrop |
| Transmission rate | 4800, 9600 or 19200 bps |
| Max nodes number | 31 |
| Protection type | Phase failure: line Thermal protection: motor Thermal protection: starter |
| Marking | CE |
| Type of cooling | Forced convection |
| Operating position | Vertical +/- 10 degree |
| Height | 380 mm |
| Width | 320 mm |
| Depth | 265 mm |
| Net weight | 18.2 kg |
| Motor power range AC-3 | 30…50 kW at 200…240 V 3 phases 55…100 kW at 380…440 V 3 phases 55…100 kW at 200…240 V 3 phases 110…220 kW at 380…440 V 3 phases 110…220 kW at 200…240 V 3 phases |
| Motor starter type | Soft starter |
Environment
| Electromagnetic compatibility | Conducted and radiated emissions level A conforming to IEC 60947-4-2 Damped oscillating waves level 3 conforming to IEC 61000-4-12 Electrostatic discharge level 3 conforming to IEC 61000-4-2 Immunity to electrical transients level 4 conforming to IEC 61000-4-4 Immunity to radiated radio-electrical interference level 3 conforming to IEC 61000-4-3 Voltage/current impulse level 3 conforming to IEC 61000-4-5 |
| Standards | EN/IEC 60947-4-2 |
| Product certifications | GOST SEPRO CSA C-Tick NOM 117 TCF UL CCC DNV |
| Vibration resistance | 1 gn (f= 13…200 Hz) conforming to EN/IEC 60068-2-6 1.5 mm (f= 2…13 Hz) conforming to EN/IEC 60068-2-6 |
| Shock resistance | 15 gn for 11 ms conforming to EN/IEC 60068-2-27 |
| Noise level | 54 dB |
| Pollution degree | Level 3 conforming to IEC 60664-1 |
| Relative humidity | 0…95 % without condensation or dripping water conforming to EN/IEC 60068-2-3 |
| Ambient air temperature for operation | 40…60 °C (with current derating of 2 % per °C) -10…40 °C (without) |
| Ambient air temperature for storage | -25…70 °C |
| Operating altitude | <= 1000 m without > 1000...2000 m with current derating of 2.2 % per additional 100 m |
Offer Sustainability
| Sustainable offer status | Green Premium product |
| REACh Regulation | REACh Declaration |
| EU RoHS Directive | Pro-active compliance (Product out of EU RoHS legal scope) EU RoHS Declaration |
| Mercury free | Yes |
| RoHS exemption information | Yes |
| China RoHS Regulation | China RoHS declaration |
| Environmental Disclosure | Product Environmental Profile |
| Circularity Profile | End of Life Information |
| WEEE | The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins |
Contractual warranty
| Warranty | 18 months |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 652 reviews
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Product Reviews
★★★★★ 5
Excellent value for money!
Size: 934W-Z, Color: Black, Size: 934W-Z, Color: Black
I absolutely love this office chair! I needed a chair that could support my standing desk without sacrificing comfort, and this one completely exceeded my expectations. It's incredibly sturdy and durable, well-made, and the height adjustment is super convenient, making it easy to find the perfect fit. Even during long hours of work, the seat is comfortable, and the ergonomic design effectively reduces pressure on my back and legs. I love its clean, modern look—it fits my home office perfectly. Assembly was quick and easy, and for this price, the quality is absolutely fantastic!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
★★★★★ 5
Perfect chair!
Size: 934-Z, Color: Blue, Size: 934-Z, Color: Blue
I have an adjustable-height desk (also purchased from Amazon) and needed a drafting chair for those times when my body gets tired of standing. This chair fits the bill and then some! I put it together myself; it took me about an hour, but would take me about half that next time, since now I know what to do (and what NOT to do!). All the parts were there; there are even spare parts (see photo). All the holes were drilled in exactly the right places, too, which isn't always the case when I buy things from Amazon (my standing desk is a great example). The chair fits me; I'm short (5'3.5"), and often the seats of furniture are too deep for me to rest my feet flat on the floor. The depth of the seat on this chair is just a little over 18 inches, and with the adjustable footrest ring, it's perfect. I don't think a tall or heavy person would fit in it, to be honest. But it's perfect for those of us who are vertically challenged. I love that it glides easily on my hardwood floors and that it turns 360 degrees. The chair comes in numerous luscious colors, so take your pick! It is very sturdy, has good lumbar support, and the seat and seat back are very comfortable. And the arms flip up, which was an absolute must when I was shopping for this chair. I got it on sale, too -- $109.00 -- and I'm delighted with this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
★★★★★ 5
Excellent adjustable drafting chair
Size: 934-Z, Color: Blue
Excellent chair design, extremely comfortable and exceptionally easy instructions to follow making for simple assembly. Love the amply wide cushioned seat and ergonomic backrest. The height adjustment feature works perfectly as well as positioning of the foot ring . Having the ability to raise the arms is also a big plus! I highly recommend this product for attractive appearance, comfort features, functionality and operation. Really nice chair!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 4
Comfortable, stylish, and perfect for long work hours 💗✨
Size: 934-Z, Color: Pink
I bought this chair because I spend a lot of time working and needed something comfortable but also stylish, and I absolutely love it.
Since I started using it, I feel much better support in my back thanks to the lumbar support. It makes a big difference, especially during long work hours. The adjustable footrest is also a feature I didn’t know I needed, but now I use it all the time.
The flip-up armrests are very convenient because I can adjust them depending on what I’m doing or move them out of the way when needed.
The pink color is beautiful and adds a soft, elegant touch to my workspace. It looks great in a modern home office.
It feels sturdy, well-made, and very stable. Overall, it’s a great purchase that improved both my comfort and the look of my workspace.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
All-around thumbs up!
Size: 934W-Z, Color: Black
So far, so awesome. Easy to assemble, comfortable, arrived quickly and is exactly what I was looking for. I have a tall work bench in my new studio so I needed a chair that we could allow me to sit higher than a regular office chair and allow me to get off my feet after standing on the concrete floor. Plus its a nice looking chair that I am sure will last a long time. I love the flip-up arms and the lumbar support. This is just right!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
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