Product identity and role
The Siemens SENTRON 3VA2110-7MN36-0DL0 is a 3-pole molded case circuit breaker (MCCB) designed specifically for motor protection, as per the product designation. It carries a continuous current rating of 100 A across the full ambient temperature range from 40 °C to 70 °C, meaning no derating is required up to that upper limit — a practical advantage for panels with limited airflow or high ambient heat.
Breaking capacity and fault clearance
This MCCB delivers a rated ultimate short-circuit breaking capacity (Icu) of 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. The steep drop at 690 V is characteristic of air-break MCCBs at that voltage; for 690 V applications, verify the available fault current stays under 3.7 kA. The high 330 kA figure at 240 V makes this unit suitable for installation close to large step-down transformers or busway taps where fault current can exceed 200 kA.
Motor protection and auxiliary complement
Designed for motor protection, the 3VA2110-7MN36-0DL0 includes phase failure detection as a built-in function — essential for preventing single-phasing damage on three-phase motor loads. It ships with an undervoltage release (UVR) as the auxiliary release type, which will trip the breaker when supply voltage drops below a threshold, protecting downstream equipment from brownout conditions. The auxiliary switch complement is specified as two auxiliary switches plus one trip alarm switch plus one electrical alarm switch, providing four discrete signal outputs for remote status monitoring or PLC inputs.
Physical integration and environmental limits
Dimensions are 105 mm width, 181 mm height, and 86 mm depth — a standard SENTRON 3VA frame size that mounts on a DIN rail or panel-mount adapter. Operating temperature range is -25 °C to 70 °C, with storage extremes of -40 °C to 80 °C. Maximum power loss is 12.5 W, which should be factored into enclosure thermal calculations for sealed panels.