The Siemens 3VA1132-6EF36-0KH0 is a 3-pole IEC molded case circuit breaker in the 3VA1 series, built on the 160 A frame with breaking capacity class H — meaning it interrupts 70 kA at 415 V AC. That's the high-breaking variant for this frame size, sized for installations where fault current runs high and the breaker needs to clear a short without upstream devices having to intervene. Rated In = 32 A with a TM240 thermal-magnetic trip unit. Overload protection (Ir) is adjustable 22 A to 32 A; short-circuit protection (Ii) is fixed at 5 to 10 times In. That range covers motor-starting inrush and feeder protection in the same package — the thermal element tracks load heating, the magnetic element catches bolted faults.
Integration notes
Clamp connection terminals accept copper or aluminium conductors without lug kits — saves panel space and a wiring step. The shunt trip (STL) operates on 220-250 V DC or 208-277 V AC, so it can be driven from a control transformer or a DC UPS for remote tripping on emergency-stop or fire-alarm circuits. Two auxiliary switches (HQ) plus one trip alarm switch (HQ) are factory-installed. That gives status feedback for the main contacts and a separate signal for trip events — useful for PLC-based monitoring without adding external relay logic.