What this MCCB delivers
Three-pole design, line protection version. This is a straightforward thermal-magnetic replacement with electronic precision.
Above that, it derates: 154 A at 55 °C, 148 A at 60 °C, 142 A at 65 °C, 136 A at 70 °C. Maximum power loss is 25.5 W. That's the heat the breaker dumps into the enclosure — factor it into your thermal budget, especially in a multi-breaker lineup.
Auxiliaries and releases
Comes with 2 auxiliary switches (HQ type) and a shunt trip (STL) release. The shunt trip allows remote tripping via a control signal — useful for emergency-stop circuits or interlocking. No undervoltage release fitted; if you need UVR, that's a different variant. The integrated auxiliary trip is order code 3VA9688-0BL32. The supplied basic switch is 3VA2116-5HL36-0AA0 — this is the base breaker without auxiliaries, if you're cross-referencing a panel BOM. Latching endurance is 20 000 operations — standard for this frame size, not a high-cycle application breaker.
