Siemens 6EP1961-2BA00 SITOP select 4-Channel 24V 40A Diagnostics Selectivity Module

The Siemens SITOP select 6EP1961-2BA00 is a 4-channel diagnostics selectivity module that takes a 24 V DC/40 A input and distributes it across four outputs rated 10 A each, with an adjustable current threshold of 2-10 A per channel set by potentiometer. It isolates a faulted branch circuit without tripping the upstream 24 V supply.

Technical Specifications

Certifications & Standards

• CE
• UKCA
• EAC
• CB

Selection Notes

The 2-10 A adjustable threshold and 4x10 A output split let this module protect four 24 V branch circuits from a single 40 A supply, tripping only the overloaded branch instead of the whole bus - the core selectivity function. Compare against lower-current selectivity module variants in the same family, sized for branch loads under 3 A per channel; pick this 6EP1961-2BA00 when individual loads run above 3 A per channel. The blade-type input fuse (15 A, user-replaceable) is the field-serviceable part after a sustained overcurrent event.

Applications

Used downstream of a central 24 V DC power supply to protect multiple independent control circuits - PLC I/O, sensor/actuator branches, valve manifolds - so a short on one branch does not shut down the whole cabinet.