Schneider Electric ATSU01N232LT Altistart U01 Soft Starter 32 A

ATSU01N232LT: Altistart U01 soft starter for TeSys U, 32 A

The ATSU01N232LT is a Schneider Electric soft start and soft stop unit from the Altistart U01 and TeSys U range, rated 32 A for three-phase asynchronous motors. The datasheet drawings show it mounted next to a TeSys U controller-starter on a power connector, with both non-reversing and reversing power bases, so it is the choice when a TeSys U motor feeder needs a gentle start rather than a standalone soft starter. This unit drives 7.5 kW at 230 V or 15 kW at 400 V and works from 200 to 480 V with a 24 V DC control supply. Seven Star LLC supplies the ATSU01N232LT in Oman and the GCC as an independent supplier based in Muscat.

Reading the reference against the datasheet: ATSU01 is the device short name, the digits 232 line up with the 32 A starter rating and N2 with the three-phase 200–480 V power class, and LT goes with the 24 V DC control supply. This is our interpretation, not a published ordering key.

Soft start, soft stop and boost on the ATSU01N232LT

This unit raises the motor voltage along a ramp, with a starting torque of 30 to 80 % of the direct-on-line value and an output voltage that never exceeds the supply. Start time and stop (deceleration) time can each be set from 1 to 10 s, so pumps and conveyors can be brought up and down gently. A BOOST logic input adds a start-up boost for hard-to-move loads. When the ramp ends, an integrated bypass carries the current, so dissipation drops to 2.5 W at full load against 322.5 W in the transient state.

Control uses LI1 (stop), LI2 (run) and BOOST at 24 to 40 V, and the relay output R1 with the logic output LO1 signalling the end of starting. A green LED shows that the starter is powered and a yellow LED shows that nominal voltage has been reached. The control side is galvanically isolated from the power side.

Working beside a TeSys U feeder with the ATSU01N232LT

TeSys U is the controller-starter named in the datasheet drawings. They for this reference show the soft starter alongside a TeSys U controller-starter and control unit, with the power connection made through a connector between the two, and a side-by-side arrangement with either a non-reversing or reversing power base. The power wiring example shows the QF1 controller-starter in front of the soft start and soft stop unit A1, so the TeSys U stays in the feeder while the soft starter shapes the start and stop.

Check the TeSys U base and control unit rating against the 32 A figure before ordering them together, and confirm the pairing in the manufacturer’s combination tables because the datasheet shows the arrangement but does not list every compatible unit.

Mounting and environment for the ATSU01N232LT

The unit measures 314 × 45 × 170 mm and weighs 0.49 kg. It mounts on a 35 mm rail with the power connector to a TeSys U base or in a side-by-side arrangement, vertically within ± 10 degrees. Power terminals take 1 to 10 mm² rigid (1.9 to 2.5 N.m) and control terminals 0.5 to 2.5 mm² (0.5 N.m). Degree of protection is IP20, so it belongs in an enclosure.

Ambient is −10 to 40 °C without derating and up to 50 °C at 2 % per degree; above 1000 m the current derates 2.2 % per additional 100 m. Humidity is 5 to 95 % without condensation. EMC emissions are level B and certifications named are UL, CCC, CSA and C-Tick, with CE marking.

Technical specifications of the ATSU01N232LT

How the ATSU01N232LT differs from the ATS01 starters

Both are 32 A voltage-ramp starters with a bypass. The U01 version adds the TeSys U mounting arrangement, a 24 V DC control supply and the wider 200–480 V supply range.

Selection checklist and use of the ATSU01N232LT in Oman and the GCC

• Motor full-load current compared with 32 A and the motor power with the table above.
• A TeSys U controller-starter in the feeder, or a plan to use the soft starter alone.
• A 24 V DC control supply with 100 mA available.
• Need for soft stop and boost.
• Cabinet temperature compared with the 40 °C derating point.

Typical uses are small pumps, fans and conveyors in utility cabinets and skid-mounted packages in Gulf plants, where TeSys U feeders are already standard. Check the cabinet heat load in summer.

Information to send with an RFQ for the ATSU01N232LT

• Reference ATSU01N232LT and quantity.
• Motor power, full-load current and voltage.
• TeSys U base and control unit references, if used.
• Control supply availability.
• Delivery location and deadline.

Documents and quotation

The manufacturer datasheet for the ATSU01N232LT is attached on this page. It holds the full specification table, the dimension drawings and the mounting and wiring pages summarised above.

Send us the reference ATSU01N232LT, the quantity and the delivery location and Seven Star LLC will reply to your request for quotation. We are an independent supplier based in Muscat.