Siemens 3VL4740-2PB36-2PB1 VL400N 3-Pole Circuit Breaker
Siemens 3VL4740-2PB36-2PB1 VL400N 3-Pole Circuit Breaker with Aux Contacts
The Siemens 3VL4740-2PB36-2PB1 is a VL400N molded case circuit breaker, specifically a 3-pole unit designed for line protection. It offers a very high breaking capacity (Icu) of 70kA at 415V AC and is equipped with an electronic trip unit (ETU) with LI functionality. The rated current is 400A, with an adjustable overload protection (IR) from 160A to 400A and short-circuit protection (II) settings adjustable from 500A to 4000A (delayed) and 1.25 to 10 x IN (instantaneous). A key feature of this model is the inclusion of 2 auxiliary contacts (2 normally open/2 normally closed), which can be used for signaling or remote indication. It is supplied as a spare part for replacement purposes.
This circuit breaker is ideal for applications requiring detailed monitoring and control, such as in sophisticated industrial automation systems, control cabinets, and power distribution units where auxiliary contacts are needed for interlocking or status feedback. The combination of high breaking capacity and signaling capabilities makes it a versatile component.
Stanlo Automation, your veteran-owned source for surplus automation parts, offers the Siemens 3VL4740-2PB36-2PB1. Secure reliable and cost-effective components for your critical systems from our inventory.
| Part Number | 3VL4740-2PB36-2PB1 |
| Manufacturer | Siemens |
| Series | VL400N |
| Poles | 3 |
| Rated Current (In) | 400A |
| Rated Voltage | 415V AC |
| Breaking Capacity (Icu) | 70kA |
| Trip Unit | ETU, LI |
| Overload Protection (IR) | 160-400A |
| Short-Circuit Protection (II) | 500-4000A (delayed), 1.25-10xIN (instantaneous) |
| Auxiliary Contacts | 2 NO/NC |