Siemens 3VL4731-3DC36-0AA0 VL400L Circuit Breaker Very High Breaking Capacity

The Siemens 3VL4731-3DC36-0AA0 is a VL400L circuit breaker designed for very high breaking capacity applications. This 3-pole breaker has a rated current (In) of 315A and an impressive breaking capacity (Icu) of 100kA at 415V AC. It features a TM (Thermomagnetic) trip unit with LI (Long-time and Instantaneous) protection. The overload protection (IR) is adjustable from 250A to 315A, and the short-circuit protection (II) is set from 1575A to 3150A. This model is intended for line protection and is supplied as a spare part, without auxiliary releases or auxiliary/alarm switches.

This circuit breaker is suitable for the most demanding industrial environments requiring the highest levels of fault current interruption. Applications include main power distribution in large facilities, protection of critical equipment, and systems where short-circuit levels are exceptionally high. Its very high breaking capacity ensures maximum safety and reliability under severe fault conditions.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3VL4731-3DC36-0AA0. We provide reliable access to quality surplus components, ensuring your critical systems are protected. Count on Stanlo Automation for your high-capacity circuit breaker needs.