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Siemens 3TX4440-2A Auxiliary Switch Block - 4 NO Screw Terminal

Siemens 3TX4440-2A Auxiliary Switch Block with 4 NO screw terminals.

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ManufacturerSiemens

Part number3TX4440-2A

Type Auxiliary Switch Block

Contacts 4 NO

Terminal Type Screw

Standard EN 50005

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4 NO contacts Screw terminal connection Designed for Siemens contactor relays and motor contactors High mechanical endurance IP20 protection Snap-on mounting

Product description

The Siemens 3TX4440-2A is an auxiliary switch block featuring four normally open (4 NO) contacts with screw terminals, designed for use with contactor relays and motor contactors according to EN 50005 standards. It offers a robust 10A current rating at 240V AC, a substantial mechanical service life of 10,000,000 cycles, and an IP20 front protection class.

This auxiliary switch block is crucial for expanding the control capabilities of Siemens contactors in diverse industrial applications. It is widely employed in manufacturing facilities, automation systems, and electrical control panels to provide additional monitoring, interlocking, and control functions.

Stanlo Automation, a trusted veteran-owned surplus parts distributor, stocks the Siemens 3TX4440-2A. We are committed to providing quality surplus components and excellent service to support your industrial automation needs.

Technical specifications

Type	Auxiliary Switch Block
Contacts	4 NO
Terminal Type	Screw
Standard	EN 50005
Rated Current	10A at 240V AC
Mechanical Service Life	10,000,000 cycles
IP Rating	IP20

Common applications

Motor control

Contactor relay applications

Automation systems

Control panels

Interlocking

Signaling circuits

Compatible systems

Siemens contactor relays and motor contactors (EN 50005)

Also known as

Siemens 3TX4440-2A

Replaces / compatible with

Compatible with Siemens contactor relays and motor contactors conforming to EN 50005.

Technical note

Expert tip

The snap-on mounting design ensures quick integration with compatible Siemens contactor relays and motor contactors.

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Frequently asked questions

What is the contact configuration of the Siemens 3TX4440-2A?

The Siemens 3TX4440-2A auxiliary switch block features four normally open (4 NO) contacts. This configuration is useful for providing multiple 'on' signals or completing circuits when the main contactor is energized.