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Siemens 3TH4391-0A Contactor Relay: 9 NO, 1 NC, AC Operation

Siemens 3TH4391-0A Contactor Relay: 9 NO + 1 NC, AC operation.

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ManufacturerSiemens

Part number3TH4391-0A

Contacts 9 NO + 1 NC

Operation AC

Standard EN 50011

Terminal Type Screw terminal

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12-month warranty

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CAGE: 9NK75

9 Normally Open Contacts 1 Normally Closed Contact Screw Terminals AC Operation EN 50011 Compliant

Product description

The Siemens 3TH4391-0A is a high-quality contactor relay designed for reliable electrical control. It features a 9 NO (Normally Open) and 1 NC (Normally Closed) contact configuration, operating on AC voltage. This relay is built to meet industrial standards for performance and durability.

This contactor relay is suitable for a wide range of industrial automation applications, including motor control, lighting control, and general switching operations. It is commonly used in control panels for manufacturing equipment, building automation systems, and other electrical distribution applications.

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Technical specifications

Contacts	9 NO + 1 NC
Operation	AC
Standard	EN 50011
Terminal Type	Screw terminal

Common applications

Motor Control

Lighting Control

Control Panels

Industrial Automation

Electrical Switching

Compatible systems

Industrial control panels PLC systems Motor starter circuits

Also known as

Siemens 3TH4391 3TH4391 Contactor

Replaces / compatible with

Replaces older Siemens contactor relay models with similar configurations. Compatible with standard industrial control systems.

Technical note

Expert tip

Ensure proper wiring and adherence to EN 50011 standards for safe and effective operation.

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Frequently asked questions

What are the contact specifications for the Siemens 3TH4391-0A?

The Siemens 3TH4391-0A features a configuration of 9 Normally Open (NO) and 1 Normally Closed (NC) contacts, suitable for various control circuits.