The Siemens SENTRON 3VA2116-5HN32-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous current, designed for line protection in distribution panels and industrial switchboards. It carries an undervoltage release (UVR) as standard, so a drop in supply voltage below the release threshold trips the breaker — useful for preventing motor re-acceleration after a sag or outage without a separate control relay.
Breaking capacity across the voltage curve
The interrupting rating is not a single number — it depends on the system voltage. At 240 V this MCCB clears 187 kA; at 415 V and 440 V it holds 121 kA; at 500 V it drops to 75.6 kA; and at 690 V it is rated 3.7 kA. For a 400 V panel with a transformer-fed fault current of, say, 85 kA, the 121 kA rating at 415 V gives headroom. At 690 V the 3.7 kA limit means this breaker is not the right choice for a high-fault 690 V bus — that is a coordination call the site electrical engineer needs to make.
Thermal derating and ambient temperature
The 160 A continuous rating holds flat from 40 °C through 70 °C ambient — no derating curve to apply in a warm enclosure. That simplifies panel design: the breaker delivers its full nameplate current inside a switchboard running at 60 °C without a de-rate factor. Maximum operating temperature is 70 °C; storage range is -40 °C to 80 °C.
Panel fit and dimensions
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint for DIN-rail or screw-mount installation in a distribution board. The 86 mm depth (3.39 in) fits typical shallow enclosures; verify the gland plate clearance if the breaker sits near a back-panel door.