Authenticity and condition
Product authenticity and actual condition, including new condition when offered as new, are checked before final approval and recorded in the quotation.
6DD1681-0EB36DD1681-0EB3Product image is not available.Verify the part number and specifications; the image alone does not establish suitability.
Delivery to your location is confirmed separately.
Source reviewed: 2026-10-22
Siemens SB61 6DD1681-0EB3 connects 8 digital inputs with 24/48 VDC to 24 VDC conversion, per the official ST70 2021 catalogue. Confirm host configuration, wiring and current availability before ordering.
Product authenticity and actual condition, including new condition when offered as new, are checked before final approval and recorded in the quotation.
The part number, revision, firmware or version is checked against your requirements. Apparently similar products may differ in price because of their version or condition.
Specialist products have a lead time. The valid delivery estimate is stated in the quotation after checking availability and specifications.
Category similarity does not establish compatibility or replacement suitability.
6ES7421-1BL01-0AA0Input signal 0: -30..5 V DCInput signal 1: 13..30 V DC
6ES7421-1EL00-0AA0Isolation check voltage: 1500 VACMaximum 5 V backplane current (mA): 200
6ES7421-1FH20-0AA0Isolation check voltage: 1500 VACMaximum 5 V backplane current (mA): 80
6ES7421-7BH01-0AB0Isolation check voltage: 500 VDCMaximum 5 V backplane current (mA): 130