Siemens 3VA2116-5HN32-0AH0 — 160 A MCCB, 3-Pole, 187 kA IC
The Siemens SENTRON 3VA2116-5HN32-0AH0 is a 3-pole molded case circuit breaker rated for 160 A continuous current at 40 °C through 70 °C — no derating needed across that full ambient span, which simplifies panel design in warm enclosures. Interrupting capacity reaches 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA rating at 240 V means it handles high-fault scenarios typical of large transformer secondaries or busway taps without needing an upstream current-limiting fuse. Rated insulation voltage is 800 V, so it's suitable for 480/277 V and 600 V delta systems with margin. The breaker is designed for line protection — no undervoltage release, no ground-fault monitoring, no communication module. It's a straight thermal-magnetic or electronic-trip MCCB for feeder or main service.
Mounting & panel fit
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. That 86 mm depth is the key number for enclosure back-panel clearance — it fits standard 200 mm deep industrial enclosures with room for wiring gutters. The width of 105 mm is the 3-pole frame footprint; verify busbar or lug spacing against the panel layout. Maximum power loss is 25.5 W at rated current. That's the heat to vent in the enclosure — factor it into thermal calculations if the panel is sealed or has limited airflow.
Lifecycle & sourcing
The auxiliary switch configuration is factory-integrated: 2 auxiliary switches plus 1 trip alarm switch (HQ type). That's a fixed assembly — you're not adding a field-installable accessory block. The supplied basic switch order code is 3VA21165HN320AA0, which confirms the internal mechanism variant.