Integration details
This breaker ships with a shunt trip (STL) rated 12–30 V DC or 24 V AC 50/60 Hz — wired to a remote E-stop or safety PLC, it drops the main contacts on a signal loss. Two auxiliary switches (HQ) plus a separate trip alarm switch (HQ) give status feedback for the controls integrator: one set for the breaker position, one for the faulted state. The N conductor is unprotected (solid neutral), so this is a 3-pole + N configuration, not a 4-pole protected neutral. Panel builders will note the nut keeper kit included for the busbar connection — no dropped hardware inside the enclosure.