Siemens 3VA1032-4ED32-0JA0 — 32 A SENTRON MCCB for Line Protection
The Siemens 3VA1032-4ED32-0JA0 is a SENTRON molded case circuit breaker (MCCB) rated for 32 A continuous current (Iu) at 40 °C, with a 3-pole configuration and a TM210 thermal-magnetic overcurrent release. It's built for line protection duty — meaning it sits upstream of branch circuits, not as a motor-protective device — and carries a 121 kA interrupting rating at 240 V, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V. That keeps the BOM simple: what you spec is what you get, and there's no risk of a field adjustment drifting out of coordination. It's a clean, no-frills line protection breaker for a panel that already has its monitoring handled upstream.
Thermal Derating — What the 32 A Rating Actually Means in a Warm Panel
At 55 °C it derates to 30.72 A, at 60 °C to 30.08 A, at 65 °C to 29.44 A, and at 70 °C to 28.8 A. Plan your load at 28.8 A if the ambient at the breaker face hits 70 °C. That's standard for a panel-mounted MCCB; no special gasketing needed for a dry indoor enclosure.
Lifecycle and Sourcing — Current Production, No Phase-Out Signal
The integrated auxiliary trip is a separate order code, 3VA9688-0BL32, which you'd order alongside the breaker if your design requires a shunt-trip function. The breaker itself ships without auxiliary contacts or a ground-fault monitoring module — those are add-on accessories, not built in.
For a line protection breaker that sees infrequent switching (maybe a few cycles a year for maintenance isolation), that's more than adequate. If you're using it as a disconnect switch under load, factor in the electrical endurance curve from the device manual.