Siemens 6AG1 443-5DX05-4XE0
€2,010.00
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Siemens 6ES7331-7KF02-0AB0
€100.00
excl. VAT
Product condition:
Used, removed from an installation
The item comes from dismantled equipment. We have not carried out an electrical inspection or a comprehensive operational check. Signs of age, use, installation or removal may be present. 14-day right of return in the event of a defect. See Terms and Conditions
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Product description
The Siemens 6ES7331-7KF02-0AB0 is wired via a 20-pin front connector, through which eight analog measuring channels reach the backplane bus of the SIMATIC S7-300. As SM 331 analog input module, it converts process values from field devices into digital measured values for the CPU. Voltage ranges from ±80 mV to ±10 V, currents such as 4 to 20 mA or ±20 mA at 25 Ω input resistance and thermocouples of types E, J, K, L and N can be parameterized per channel. Four of the eight inputs handle resistance measurements up to 600 Ω or evaluate Pt100 and Ni100 in two-, three- or four-wire connection. Transducers can be connected as two-wire or four-wire devices; for thermocouples, internal and external reference junction compensation is available. The integration time of 2.5, 16.67, 20 or 100 ms determines resolution and interference suppression: the range extends from 9 bit with fast conversion up to 14 bit with 10-Hz suppression. A diagnostic interrupt can be parameterized for channels 0 and 2, as can a limit value interrupt; group errors are indicated by a red SF LED. The channels are isolated from the backplane bus and the electronics supply; the isolation test voltage is 500 V DC. The load side is supplied with 24 V DC at a maximum of 30 mA, a maximum of 50 mA is drawn from the backplane bus, and the power loss is typically 1 W. For shipping from Germany to the United States and other international destinations, the relevant figures are a weight of 250 g and dimensions of 40 × 125 × 117 mm. Shielded signal cables may be up to 200 m long, 50 m for 80-mV ranges and thermocouples.
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
Unless expressly confirmed, technical information is provided to identify the device type. The complete manufacturer or type number is decisive.
| Manufacturer | Siemens |
|---|---|
| Product series | SIMATIC S7-300 |
| Manufacturer/order/ID number | 6ES7331-7KF02-0AB0 |
| Module function | SM 331 analog input module, isolated |
| Analog inputs | 8 (4 of them for resistance measurement) |
| Measurement types | Voltage, current, thermocouple, resistance thermometer, resistance |
| Current ranges | 0–20 mA, 4–20 mA, ±3.2 mA, ±10 mA, ±20 mA (input resistance 25 Ω) |
| Voltage ranges | ±80 mV, ±250 mV, ±500 mV, ±1 V, ±2.5 V, ±5 V, ±10 V, 1–5 V |
| Thermocouples and resistance thermometers | Type E, J, K, L, N; Pt100 and Ni100 |
| Resolution | 9/12/14 bit, max. 15 bit incl. sign |
| Integration time | parameterizable 2.5 / 16.67 / 20 / 100 ms |
| Load voltage L+ | 24 V DC, reverse polarity protected; max. 30 mA |
| Backplane bus current consumption | max. 50 mA from 5 V DC |
| Power loss | typ. 1 W |
| Diagnostics and interrupts | Diagnostic interrupt (channels 0 and 2) and limit value interrupt parameterizable, SF LED |
| Electrical isolation | Channels to backplane bus and electronics supply, test voltage 500 V DC |
| Connection | 20-pin front connector; shielded max. 200 m |
| Dimensions | 40 × 125 × 117 mm |
| Weight | 250 g |
Product status and export data
| Product status (manufacturer) | Discontinued since 01/10/2025 |
|---|---|
| Commodity code | 85389091 |
| Country of origin | Germany |
| Export list number (AL) | N |
| ECCN | 9N9999 |
Manufacturer information for order number 6ES7331-7KF02-0AB0, as of 21/10/2026. Not a statement about the individual unit supplied; does not replace an export control review.
Siemens SIMATIC S7 error codes
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How many channels of the 6ES7331-7KF02-0AB0 measure resistance?
Of the eight analog inputs, four handle resistance measurement and resistance thermometers such as Pt100 and Ni100.
Which thermocouples are supported?
Types E, J, K, L and N can be parameterized, with internal or external reference junction compensation.
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.
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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.
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