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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
4.5 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Real walnut wood. High quality.
Color: Walnut Wood, Size: Large, Color: Walnut Wood, Size: Large
This is authentic walnut wood. I was apprehensive at first. My fear was that it was pine stained to the color of walnut. I thought the wood stain would come off on my wrists and wear over time.
Turns out this is a genuine chunk of walnut! Worth the $20. I laser engraved my logo onto it and it revealed that it’s 100% walnut to the core.
Elegant solution. Perfectly comfortable. Way less corny than those squishy wrist rests from the 2000’s. Nice rubber gaskets on the bottom to keep it from slipping. Does not move while in typing.
The exact right size for supporting your wrist on a full size Keychron keyboard. I’m using it with a P6 Ultra. But it would fit any full size Keychron keyboard.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Surprisingly comfortable and stylish wrist rest!
Color: Walnut Wood, Size: Large
This wrist rest is the perfect compliment to my desk set up. I was hesitant about buying a wood product like this, but I’ve been pleasantly surprised how comfortable and smooth it is during extended use. For the price, it feels like a premium product, and I love that it stays put with the rubber feet. The size is perfect for a full-size keyboard, with just the right thickness to keep your wrist and palms comfortable. If you’re looking for an elevated way to decorate your desk while protecting your wrist, this is a great choice.
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Reviewed in the United States on March 29, 2026
★★★★★ 5
Great wrist rest with a modern look!
Color: Walnut Wood, Size: Medium, Color: Walnut Wood, Size: Medium
This is a great looking addition to my desk. It’s a just the right length to fit my keyboard and I love the walnut coloring! It’s real wood and has nice rubber feet on the bottom to keep it from moving around. The angle is nice for my wrists and it’s easy to clean with just a damp cloth. If I ever wear this one out (which I doubt) I’d buy another!
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Reviewed in the United States on March 31, 2026
★★★★★ 5
Super comfortable - much better than memory foam wrist rests!
Color: Walnut Wood, Size: Large, Color: Walnut Wood, Size: Large
Get this wrist rest - you won't be disappointed. Had ergonomic keyboards and have tried memory foam rest in the past and this is much better. Smooth wood, perfect height and very supportive to keep wrists in neutral position when typing. Got the 17.3" and like that there's ample room to not feel squashed, but probably could have done with the medium length. Great angle for my mechanical keyboard. Love it!
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Reviewed in the United States on April 6, 2026
★★★★★ 4
What an excellent wrist rest! Except for this one thing....
Color: Walnut Wood, Size: Large
This is a solid piece of wood with great quality. Fantastic large rubber grips on the bottom (left and right sides only).
Pro: I use it for editing and gaming. And though I thought the wood might be a bad choice in the long run, it turns out it's pretty nice. Not as comfortable as a gel rest but I knew what I was getting when I ordered it. I buy things for function AND aesthetics. I love how this looks. The uniqueness is really something. I got the natural one instead of the black so that the grains and lines can be easily seen.
Con: Unfortunately, after almost 2 months, the wood has warped some. Not enough to effect my typing but, enough that I notice it. The warp is the kind where the opposite angled corners go up and down. While the other 2 corners are fine. In my case, the top left and bottom right, when pressed independently, rock the wrist rest. The top right and bottom left stay grounded. This is why I took a star off. Because there's no way this should be happening.
So, looks and quality are up there. The rubber grips are solid. Why it's warping is puzzling to me. NO liquid wasted on it. Or, extreme temperature changes have happened. I've made sure the rubber grips. And that the surface the rest sits on (a glass mouse scrolling top by Superglide) is clean. Yet, I get this slight rocking. It bugs me this all happened right after the return window closed. I would've simply exchanged it. I love it too much. I mean, this is, again, a SOLID piece of wood. Maybe this won't happen for everyone. I mean, it's wood. Eh
I would still recommended this regardless.
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Reviewed in the United States on November 24, 2025