160 A MCCB with 187 kA interrupting capacity at 240 V
The Siemens 3VA2116-5JQ32-0JA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a full-scale current of 160 A across the entire ambient range from 40 °C to 70 °C. Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — figures that define the available fault current it can safely clear without upstream coordination failure. The 3-pole design includes a shunt trip (STL) auxiliary release and a communication function, making it suitable for remote-trip and monitored distribution panels.
Selectivity and SCCR headroom
The 187 kA at 240 V and 121 kA at 415 V ratings give this MCCB substantial headroom for high-fault installations. When coordinating downstream branch breakers, the minimum trip setting of 240 A and initial value of 32 A allow selective coordination with smaller molded-case or miniature breakers. The 160 A continuous rating is flat from 40 °C to 70 °C, so no derating is needed in a warm enclosure — a detail that simplifies the panel thermal budget.
Physical integration and environment
Dimensions: 86 mm deep, 105 mm wide, 181 mm high. The 3-pole frame mounts in standard panel or enclosure cutouts; no special adapter plate required. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. Maximum power loss is 25.5 W — factor this into enclosure ventilation if the panel is densely packed.
Auxiliary release and ground-fault monitoring
The shunt trip (STL) auxiliary release allows remote tripping via a control voltage. Ground-fault monitoring uses summation current formation on the L-conductor. There is no undervoltage release on this variant, and the trip indicator is absent — the shunt trip is the sole auxiliary release. The communication function supports integration with higher-level monitoring systems.