Siemens 3VA1032-4ED36-0AE0 — SENTRON MCCB, 32 A, Line Protection
The Siemens 3VA1032-4ED36-0AE0 is a SENTRON molded case circuit breaker (MCCB) configured for line protection, rated 32 A continuous at 40 °C ambient across a 3-pole frame. It carries a TM210 thermal-magnetic overcurrent release — the fixed thermal element handles overloads, the magnetic trip handles short-circuits, and the 210 designation means the magnetic pickup is fixed at 10× In (320 A). Rated insulation voltage is 800 V, so it can sit on a 480/277 V or 600 V panel without derating the insulation system. Breaking capacity is the headline number for an MCCB: this unit delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA at 240 VAC means it can interrupt a fault current of that magnitude without welding contacts or rupturing the case — critical for high-available-fault installations like transformer secondaries or large motor control centers. The 11.9 kA at 690 V is the limiting case for 690 V line-ups; verify your available fault current stays under that threshold.
Thermal Derating and Panel Fit
The 32 A rating holds from 40 °C through 50 °C, then derates to 31 A at 55–60 °C and 30 A at 65–70 °C. If the breaker sits in a crowded enclosure with ambient above 50 °C, you lose 1–2 A of headroom — account for that in the load schedule. Maximum power loss is 10.6 W per pole, so three poles dissipate roughly 32 W total; that heat must be vented or the enclosure must be sized to keep internal ambient below the derating curve. Physical footprint: 70 mm deep, 76.2 mm wide, 130 mm tall. The 76.2 mm (3 in) width is a standard 3-pole MCCB pitch.
Auxiliary Switching and Variant Note
This variant ships with provision for up to 4 auxiliary switches (HQ type) — the basic switch supplied is order code 3VA10324ED360AA0. That means the breaker comes with the internal mechanism for auxiliary contacts, but the actual switch modules are ordered separately and snap into the designated slots. No undervoltage release, no ground-fault monitoring, no communication module on this version — it is a straight line-protection MCCB with thermal-magnetic trip only.