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Siemens 3TH4394-0AP0 Contactor Relay - 5 NO + 5 NC, 230V AC

Siemens 3TH4394-0AP0 Contactor Relay with 5 NO + 5 NC contacts.

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ManufacturerSiemens

Part number3TH4394-0AP0

Type Contactor Relay

Manufacturer Siemens

Part Number 3TH4394-0AP0

Contacts 5 NO + 5 NC (1U)

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5 Normally Open Contacts 5 Normally Closed Contacts AC Operation Screw Terminals Flexible Contact Configuration EN 50011 Compliant

Product description

The Siemens 3TH4394-0AP0 is a versatile contactor relay designed for AC operation, featuring a balanced configuration of 5 normally open (NO) and 5 normally closed (NC) auxiliary contacts. It utilizes screw terminals for reliable and secure connections and is rated for 230 V AC at 50 Hz and 277 V AC at 60 Hz, conforming to EN 50011 specifications. The '1U' designation indicates a specific auxiliary contact arrangement.

This contactor relay is suitable for a wide array of control and automation tasks, including complex switching sequences, interlocking functions, and signal monitoring in industrial environments. Its application spans across manufacturing plants, building management systems, and various types of machinery requiring flexible contact configurations.

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Technical specifications

Type	Contactor Relay
Manufacturer	Siemens
Part Number	3TH4394-0AP0
Contacts	5 NO + 5 NC (1U)
Operation	AC
Coil Voltage	230V AC 50Hz, 277V 60Hz
Terminal Type	Screw
Standard	EN 50011

Common applications

Complex Control Circuits

Interlocking Functions

Signal Monitoring

Industrial Control Panels

Automation Systems

Machinery Control

Compatible systems

Industrial control systems Automation machinery Electrical control panels Building automation

Also known as

Siemens 3TH4394 3TH4394 AC Relay

Replaces / compatible with

This contactor relay is designed for AC control systems requiring a balanced set of auxiliary contacts. It can replace or supplement Siemens contactor relays with similar specifications under EN 50011.

Technical note

Expert tip

The 5 NO + 5 NC configuration provides significant flexibility for implementing complex control logic and interlocks within a single component.

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Frequently asked questions

What does the '1U' designation mean on the Siemens 3TH4394-0AP0?

The '1U' designation on the Siemens 3TH4394-0AP0 typically refers to a specific internal configuration or arrangement of its auxiliary contacts, often related to their timing or function within the relay's operation.