{"id":32867,"date":"2026-01-14T15:50:50","date_gmt":"2026-01-14T15:50:50","guid":{"rendered":"https:\/\/c2psu.com\/?post_type=product&p=32867"},"modified":"2026-03-01T12:26:13","modified_gmt":"2026-03-01T12:26:13","slug":"siemens-digital-input-sm-421-16-de-6es7421-7bh01-0ab0","status":"publish","type":"product","link":"https:\/\/www.c2psu.com\/de\/product\/siemens-digital-input-sm-421-16-de-6es7421-7bh01-0ab0\/","title":{"rendered":"Siemens Digital Input SM 421, Potential Isolation 16 DE 6ES7421-7BH01-0AB0"},"content":{"rendered":"
<\/div>\n

Origin: Germany
\nOrder number: 6ES7421-7BH01-0AB0
\nItem number: 6ES7421-7BH01-0AB0
\nBrand: SIEMENS\/Siemens
\nModel: 6ES7421-7BH01-0AB0
\nWorking voltage: 24
\nOutput frequency: 24
\nProduct Certification: Ce
\nWhether Cross-Border Export Is Exclusively Available: No
\nSeries:S7-400
\nMaterial code: 7675625851<\/p>\n

\n
<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

The Siemens 6ES7421-7BH01-0AB0 (SM 421) is an intrinsically safe digital input module for the SIMATIC S7-400 PLC family, specifically designed for use in\u00a0hazardous areas<\/strong>\u00a0. It provides\u00a016 digital inputs<\/strong>\u00a0with 24V DC nominal voltage, featuring\u00a0Ex certification<\/strong>\u00a0for direct connection to field devices in Zone 1 and Zone 2 hazardous areas without external safety barriers . The inputs are isolated in groups of 8, with a backplane bus current consumption of 400 mA . The module supports\u00a0diagnostic interrupts<\/strong>\u00a0and includes a front connector for wiring (screw-type terminals sold separately) . Suitable for process automation applications in chemical, petrochemical, and pharmaceutical industries . This product has a\u00a0discontinued lifecycle status (PM410)<\/strong>\u00a0and is intended as a spare part for legacy Ex-rated systems .<\/p>\n

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\r\n
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