Siemens 3VA1116-5EF36-0JH0 — 160 A MCCB with TM240 Release and Shunt Trip
The Siemens SENTRON 3VA1116-5EF36-0JH0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 160 A, with an insulation voltage Ui of 800 V. It is configured for line protection and carries a TM240 thermal-magnetic overcurrent release. The interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — figures that define its fault-clearing capability at each voltage level and directly govern selectivity coordination with downstream devices. The breaker includes an integrated shunt trip release (STL) and a voltage trigger, plus 2 auxiliary switches and 1 trip alarm switch (HQ configuration). The auxiliary trip accessory is order code 3VA9688-0BL32. There is no undervoltage release, no communication function, no phase failure detection, and no ground fault monitoring — this is a straightforward line-protection MCCB without embedded electronics. The front face carries an IP40 protection class rating. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The breaker is rated for 15,000 mechanical/electrical endurance cycles. Dimensions are 130 mm height, 76.2 mm width, and 70 mm depth — a standard 3-pole MCCB footprint for panel mounting.
Current Rating vs. Ambient Temperature
The 160 A rating holds at ambient temperatures up to 50 °C. Above that, the continuous current derates: 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C. For a panel running warm, the actual load limit is the derated value at the enclosure's internal ambient — not the 160 A nameplate.