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Siemens 3VL9400-1UD00 Undervoltage Release Unit

Siemens 3VL9400-1UD00 undervoltage release with 24V AC coil for 3VL circuit breakers.

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ManufacturerSiemens

Part number3VL9400-1UD00

Type Undervoltage Release Unit

Coil Voltage 24V AC

For use with Siemens 3VL Circuit Breakers (CG, LG frames)

Installation Right-hand accessory compartment

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Provides undervoltage protection 24V AC coil voltage For 3VL CG and LG frames Installs in accessory compartment Genuine Siemens spare part

Product description

The Siemens 3VL9400-1UD00 is an undervoltage release unit designed as an accessory for Siemens 3VL circuit breakers, including models with CG and LG frames. This unit features a 24V AC coil and is intended for installation in the right-hand side accessory compartment. It is supplied as a spare part exclusively for replacement purposes.

This undervoltage release is a critical safety device that automatically trips the circuit breaker when the supply voltage drops below a certain threshold, preventing damage to connected equipment. It is commonly used in applications where stable power is essential and equipment protection is paramount.

Stanlo Automation, a veteran-owned company, offers genuine Siemens 3VL9400-1UD00 undervoltage release units. We are dedicated to providing reliable surplus industrial components to meet your operational needs with efficiency and trust.

Technical specifications

Type	Undervoltage Release Unit
Coil Voltage	24V AC
For use with	Siemens 3VL Circuit Breakers (CG, LG frames)
Installation	Right-hand accessory compartment
Application	Spare Part for Replacement Purposes

Common applications

Industrial Power Systems

Motor Control

Safety Systems

Process Automation

Electrical Protection

Compatible systems

Siemens 3VL Circuit Breakers (CG frame) Siemens 3VL Circuit Breakers (LG frame)

Also known as

Siemens 3VL9400-1UD00 UVR 3VL CG LG frame undervoltage release Siemens 24V AC trip unit

Replaces / compatible with

This undervoltage release unit is a spare part for Siemens 3VL circuit breakers with CG and LG frames, intended solely for replacement in the right-hand accessory compartment.

Technical note

Expert tip

This undervoltage release must be wired to a reliable 24V AC control circuit to ensure proper operation and safety tripping when needed.

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Frequently asked questions

What is the operating voltage for the Siemens 3VL9400-1UD00 undervoltage release unit?

The Siemens 3VL9400-1UD00 undervoltage release unit operates with a coil voltage of 24V AC. This is the voltage required to energize the release and enable its protective function, which trips the circuit breaker upon voltage loss.