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Siemens VL400N Circuit Breaker 3vl4740-1dc36-2pd1

Siemens VL400N circuit breaker with TM LI trip unit.

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ManufacturerSiemens

Part number3VL4740-1DC36-2PD1

Part Number 3vl4740-1dc36-2pd1

Manufacturer Siemens

Series VL400N

Type Molded Case Circuit Breaker

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55kA breaking capacity TM LI trip unit Adjustable overload and short-circuit protection 24V DC undervoltage release 3-pole design Includes auxiliary switch kit

Product description

The Siemens 3vl4740-1dc36-2pd1 is a VL400N molded case circuit breaker designed for robust protection in industrial electrical systems. It features a standard breaking capacity (Icu) of 55 kA at 415V AC and is a 3-pole device for line protection.

Equipped with a TM LI trip unit, it offers adjustable overload (In=400A, Ir=320...400A) and short-circuit protection (Ii=2000...4000A). This breaker also includes a 24 V DC undervoltage release and a mounting kit for auxiliary/alarm switches (2 AUX, 1 AS).

Stanlo Automation, a veteran-owned surplus distributor, provides reliable Siemens circuit breakers like the 3vl4740-1dc36-2pd1. We help ensure the safety and continuity of your power distribution systems.

Technical specifications

Part Number	3vl4740-1dc36-2pd1
Manufacturer	Siemens
Series	VL400N
Type	Molded Case Circuit Breaker
Poles	3
Icu	55kA @ 415V AC
Trip Unit	TM LI
In	400A
Ir	320-400A
Ii	2000-4000A
Undervoltage Release	24 V DC
Aux Switches	2 AUX (1 NO+1 NC) + 1 AS (1 NO)

Common applications

Power distribution

Motor protection

Industrial control panels

Electrical safety

Switchgear

Compatible systems

Siemens SIVACON S8 Industrial power distribution systems Control panels

Also known as

Siemens VL400N Breaker 3vl400 Circuit Breaker Siemens Molded Case Switch

Replaces / compatible with

This circuit breaker is designed to replace or serve as an equivalent to other Siemens VL400N series breakers with similar specifications.

Technical note

Expert tip

The 24 V DC undervoltage release requires a stable DC power source and is crucial for safety interlocks, ensuring the breaker trips when voltage drops below a critical level.

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Frequently asked questions

What are the protection features of the Siemens 3vl4740-1dc36-2pd1 circuit breaker?

The Siemens 3vl4740-1dc36-2pd1 features overload protection (LI trip unit with adjustable Ir) and short-circuit protection (adjustable Ii). It also includes a 24 V DC undervoltage release for added safety and protection against voltage fluctuations.