Siemens 3VL4740-1AA36-0AA0 VL400N Circuit Breaker Standard Breaking Capacity
Siemens 3VL4740-1AA36-0AA0 VL400N 3-pole circuit breaker, 400A
The Siemens 3VL4740-1AA36-0AA0 is a VL400N circuit breaker designed for standard breaking capacity applications. This 3-pole unit has a rated current (In) of 400A and a breaking capacity (Icu) of 55kA at 415V AC. It is equipped with a TM (Thermomagnetic) trip unit offering LI (Long-time and Instantaneous) protection. The overload protection (IR) is adjustable from 315A to 400A, and the short-circuit protection (II) is set from 1950A to 3900A. This model is intended for line protection and is provided as a spare part, without auxiliary releases or auxiliary/alarm switches.
This circuit breaker is suitable for general power distribution and protection in industrial and commercial settings where a standard breaking capacity is adequate. It is commonly used in manufacturing plants, building services, and other applications requiring reliable overcurrent protection. The thermomagnetic trip unit ensures dependable operation for overload and short-circuit events.
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| Part Number | 3VL4740-1AA36-0AA0 |
| Manufacturer | Siemens |
| Series | VL400N |
| Poles | 3 |
| Rated Current (In) | 400A |
| Breaking Capacity (Icu) | 55kA at 415V AC |
| Trip Unit | TM, LI |
| Overload Protection (IR) | 315-400A |
| Short-Circuit Protection (II) | 1950-3900A |
| Application | Line Protection |
| Type | Spare Part |