What this 3VA1032-4ED36-0DH0 is and what it does
The Siemens 3VA1032-4ED36-0DH0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in three-phase distribution panels. It's a 3-pole unit rated for 32 A continuous at 40 °C, with a rated insulation voltage of 800 V. The key spec here is the interrupting capacity: 121 kA at 240 V AC, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — that's serious fault-clearing capability for high-available-fault-current installations like main switchboards or large sub-distribution boards. The breaker includes an undervoltage release (UVR) as standard, plus two auxiliary switches and a separate trip alarm switch (HQ).
Breaking capacity — what those numbers mean for your panel
The 121 kA at 240 V and 75.6 kA at 415 V tell you this breaker can safely interrupt a fault current up to those levels without welding its contacts or exploding the arc chamber. For a site electrical engineer sizing SCCR on a 480 V panel, the 52.5 kA at 440 V figure is the one that governs — that's well above typical transformer-fed fault currents in most industrial plants, so it gives you headroom for selectivity with downstream breakers. The 11.9 kA rating at 690 V is what you'd use for 600 V class systems in Canada or some mining applications.
Mounting and integration
The breaker measures 76.2 mm wide (3 inches), 130 mm tall, and 70 mm deep. That width is a standard MCCB footprint for a 3-pole unit in a distribution panelboard or motor control center bucket. The depth of 70 mm means it fits flush in most enclosures without protruding past the deadfront. No communication function on this variant — it's a plain line-protection breaker, not a metering or communicating unit. The trip indicator gives a visual flag when the breaker has tripped on fault, which helps a field tech identify the problem circuit without pulling the cover.