160 A MCCB with full-voltage breaking curve
The Siemens SENTRON 3VA1116-4EF36-0BC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 160 A continuously at 40 °C ambient. The current rating holds flat to 160 A up through 50 °C, then derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C — so in a warm panel you lose only 10 A at the top of the operating range. Breaking capacity is specified per voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That gives you a single breaker that can handle high-fault downstream of a transformer or at the service entrance, provided the system voltage matches one of those test points.
Built-in undervoltage release and auxiliary switches
This MCCB ships with an undervoltage release (UVR) integrated — the design designation is undervoltage release (UVR) per the spec — and two auxiliary switches HQ. The UVR trips the breaker when the control voltage drops below a threshold, which is standard for motor feeder circuits where you want a controlled shutdown on loss of control power. The auxiliary switches provide status feedback (open/closed) to a PLC or indication panel. No communication function or ground-fault monitoring is fitted on this variant, so if you need remote trip indication or GF protection, you would add external modules or select a different 3VA option.
Panel fit and thermal management
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that mounts on a DIN rail or directly to a backplate via the screw terminals. The maximum power loss is 40.5 W, so in a sealed enclosure you need to account for that heat rise when sizing ventilation or derating adjacent devices. Insulation voltage is rated at 800 V, which covers 480 V and 600 V class systems with margin. Storage range is -40 °C to 80 °C; operating ambient is -25 °C to 70 °C.