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Siemens 3TX4001-2A Auxiliary Contact Block

 Siemens 3TX4001-2A Auxiliary Contact Block

This legacy Siemens SIRIUS front-mounted auxiliary contact features 1 Normally Closed (NC) contact, compatible with 3TF3 / 3TF4 contactors. Original production discontinued on Oct 01, 2021 with no identical OEM replacement. Recommended drop-in alternative: domestic compatible 3TY7561-1AA00, or upgrade to 3RH2911-1AA01 for 3RT6 series contactors. Model Code Breakdown Code Segment Definition 3TX Base designation for Siemens SIRIUS snap-on front auxiliary…

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