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Product description

In the FSA frame-size version, order number Siemens 6SE6440-2UD21-1AA1 identifies a MICROMASTER 440 frequency inverter. The line side is specified for 3 AC 380–480 V with a tolerance of ±10% and 47–63 Hz. For constant-torque operation, the data include 1.1 kW rated motor power, 2.3 kVA output power and a maximum output current of 3.0 A; the associated input current is 2.8 A. The CT ratings include an overload of 150% for 60 seconds and 200% for three seconds. The adjustable output frequency range extends from 0 to 650 Hz. The signal section comprises six digital inputs, two analogue inputs, three relay outputs and two analogue outputs. RS-485 is provided as the serial connection, while RS-232 is listed as an optional version. Both analogue inputs accept voltage or current signals, and the analogue outputs are current outputs. The unit has an IP20 degree of protection and measures 73 × 173 × 149 mm. Net weight is 1.3 kg. Frame size FSA, the three-phase 380–480-V version, the 1.1 kW CT rating and the full order number distinguish this variant within the MICROMASTER-440 range. Supply type, ratings, terminal assignment and the existing parameter backup are also relevant when assigning the unit to an installed system.

Siemens 6SE6440-2UD21-1AA1 Example image – The item supplied will have the stated manufacturer or type number and the stated condition category. Serial number, manufacturing date, labels, colour, packaging and normal signs of use or storage may differ.

Specifications

Manufacturer Siemens
Product range MICROMASTER 440
Manufacturer/order/identification number 6SE6440-2UD21-1AA1
Device type Frequency inverter
Input voltage 3 AC 380–480 V ±10%
Input frequency 47–63 Hz
Rated motor power (CT) 1.1 kW
Output power 2.3 kVA
CT output current max. 3.0 A
CT input current 2.8 A
Output frequency 0–650 Hz
Digital inputs 6
Analogue inputs 2
Relay outputs 3
Analogue outputs 2
Serial interface RS-485; RS-232 optional
Degree of protection IP20
Frame size FSA
Dimensions 73 × 173 × 149 mm
Weight 1.3 kg
Control cabinet with PLC modules and automation components
Industrial production environment

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FAQ

Frequently asked questions

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What are the supply and power ratings of Siemens 6SE6440-2UD21-1AA1?

The line side covers 3 AC 380–480 V ±10% and 47–63 Hz. The CT rated motor power is 1.1 kW, output power is 2.3 kVA and maximum output current is 3.0 A.

Which inputs and outputs are provided on Siemens 6SE6440-2UD21-1AA1?

This version has six digital and two analogue inputs, three relay outputs and two analogue outputs.

What applies if an item develops a defect within 14 days?

For the condition categories “Used, removed from an installation” and “New, old stock”, the contractual 14-day right of return in the event of a defect applies. The defect must occur within 14 calendar days after delivery and be reported in text form within the same period.

In particular, the REHA tamper-evident seal must remain fully intact and our RMA approval is required before return. In an accepted case, we decide between replacement and refund. Details in Section 11 of the Terms.

Which shipping methods and delivery times are available?

The shipping method, shipping cost and estimated delivery time are confirmed for the specific order. Depending on the item, destination and urgency, we can check parcel, express or freight shipping as well as collection.

A delivery date is binding only if we expressly confirm it as binding.

Which payment terms apply?

The payment terms stated in the checkout or order confirmation apply. Depending on the order and customer, payment is made in advance or against invoice.

International deliveries and deliveries to new customers are generally made against advance payment unless we expressly confirm another payment arrangement.

Can I return an item ordered incorrectly or found incompatible?

No. There is no general B2B right of return, exchange, cancellation or withdrawal. Incorrect or duplicate orders and a lack of suitability or compatibility with the customer’s installation are not covered by the contractual 14-day right of return in the event of a defect. Details in Section 12 of the Terms.

Can I request individual pricing for several items?

You may request an individual quotation for several items or larger quantities. We then check availability and pricing for the specific requirement; there is no entitlement to a quantity discount. Open the quick enquiry.

Do you also purchase industrial spare parts?

Yes. You can offer us automation and drive components for purchase. Please provide complete type numbers, quantities, condition details and photographs where possible.

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