What this MCCB is and what it does
The Siemens 3VA1132-6EF36-0HA0 is a SENTRON 3VA1 molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a continuous current rating of 32 A at 40 °C ambient, with no derating needed up to 50 °C — still 32 A at 50 °C — and only a 2 A drop at 70 °C (30 A). That thermal stability means it holds its full rating across most panel interior temperatures without oversizing. The interrupting ratings are what set this frame apart: 220 kA at 240 V AC, 154 kA at 415 V, and 121 kA at 440 V. At 500 V and 690 V it still clears 17 kA. Those numbers put it in the high-breaking-capacity class — suitable for large transformer secondaries or busway feeds where fault current runs high. The 800 V rated insulation voltage (Ui) confirms it is rated for 690 V line-to-line systems. It is a 3-pole unit with a TM240 thermal-magnetic overcurrent release — the thermal element handles overloads, the magnetic element handles short-circuits. The built-in shunt trip (STL) allows remote tripping via a control voltage, which is useful for emergency-stop circuits or interlocking schemes. No undervoltage release, no ground-fault monitoring, no communication module on this variant.
Panel fit and integration
The 3VA1132-6EF36-0HA0 measures 76.2 mm wide (3 in), 130 mm tall (5.12 in), and 70 mm deep (2.76 in). That 70 mm depth is the body depth — it fits standard MCCB mounting footprints in distribution boards and panel interiors. The 3-pole width matches the standard 3-inch-per-pole spacing for SENTRON 3VA1 frames. Maximum power dissipation is 10.6 W, which should be factored into enclosure thermal calculations. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. That covers most indoor and sheltered outdoor installations. No IP rating is listed, so it is intended for enclosed panel mounting, not washdown or outdoor exposure.