What the ratings mean for your panel
The Siemens 3VA1132-6EF36-0JH0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a 32 A continuous rating at 40 °C ambient, and the current holds flat through 50 °C — only dropping to 31 A at 55 °C and 30 A at 70 °C, which means you can load it near its nameplate in a warm enclosure without derating panic. The 3-pole construction and 800 V rated insulation voltage suit it for 400 V three-phase mains, and the 220 kA breaking capacity at 240 V handles high-fault utility feeds. At 415 V it still interrupts 154 kA, and at 690 V it holds 17 kA — that's enough for most industrial service entrances. The 10.6 W maximum power loss is manageable for a 32 A frame; factor it into your enclosure thermal budget if you're stacking several breakers in a row. This breaker ships with a shunt trip release (STL) and two auxiliary switches plus one trip alarm switch HQ. The shunt trip lets you remotely open the breaker via a control signal — useful for emergency-stop circuits or interlocking with a fire-alarm panel. The auxiliary contacts give status feedback to a PLC or indicator lamp. There is no undervoltage release fitted, no ground-fault monitoring, and no communication module; this is a straightforward line-protection device, not a power-monitoring node.
Panel fit and mounting
The MCCB measures 70 mm deep, 76.2 mm wide, and 130 mm tall. It mounts on a DIN rail or can be screw-fixed to a backplate. The 76.2 mm width (3 inches) is the standard 3-pole MCCB footprint — it occupies one 3-module position in a Siemens SENTRON distribution board. The 70 mm depth leaves clearance for rear-connected busbars or cable ducts in a typical 200 mm deep enclosure.
Trip indication and design details
A trip indicator and a voltage trigger are built in. The trip indicator gives a visible flag when the breaker has opened on fault — useful for a technician walking a row of panels. The voltage trigger enables remote tripping via the shunt release. The design is explicitly for line protection (cable and busbar protection), not motor or generator protection. Storage temperature range is -40 °C to 80 °C; operating range is -25 °C to 70 °C.