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Siemens 3TX7002-1FB02 Coupling Relay

Siemens 3TX7002-1FB02 phased-out coupling relay, 2 CO, gold-plated, 24-240V AC/DC.

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ManufacturerSiemens

Part number3TX7002-1FB02

Type Coupling Relay

Contacts 2 CO (Change-over)

Contact Plating Hard Gold-Plated

Enclosure Industrial

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2 Change-over contacts Hard gold-plated contacts for reliability Wide voltage range (24-240V AC/DC) Industrial enclosure Suitable for low-level switching Phased-out product

Product description

The Siemens 3TX7002-1FB02 is a phased-out coupling relay housed in an industrial enclosure, featuring two change-over (CO) contacts with hard gold-plated surfaces. It operates across a wide voltage range of 24-240V AC/DC, ensuring flexibility in various power systems.

This relay is engineered for demanding industrial environments, offering reliable switching performance with its gold-plated contacts, which are ideal for low-level signal switching and preventing contact oxidation. Applications include automation, process control, and critical interface functions.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, carries the Siemens 3TX7002-1FB02. Contact us to acquire this discontinued but high-quality relay.

Technical specifications

Type	Coupling Relay
Contacts	2 CO (Change-over)
Contact Plating	Hard Gold-Plated
Enclosure	Industrial
Input Voltage	24-240 V AC/DC
Output Rating	Dependent on load

Common applications

Industrial automation

PLC interfacing

Signal isolation

Control panel applications

Precision switching tasks

Compatible systems

Control systems requiring a reliable coupling relay with 2 CO contacts, gold-plated for low-level switching, and a wide voltage range of 24-240V AC/DC

Also known as

Siemens 3TX7002-1FB02 relay

Replaces / compatible with

The preferred successor for the Siemens 3TX7002-1FB02 is the 3RQ2000-1CW01 coupling relay, which offers similar functionality with hard gold-plated contacts and a wide voltage range in an industrial enclosure.

Technical note

Expert tip

The hard gold plating on the 3TX7002-1FB02 ensures excellent performance even when switching very low currents or voltages, common in sensitive control circuits.

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Frequently asked questions

Why are the contacts on the Siemens 3TX7002-1FB02 gold-plated?

The hard gold-plated contacts on the Siemens 3TX7002-1FB02 provide superior conductivity and resistance to oxidation. This makes the relay ideal for switching low-level signals or in environments where reliable contact is critical.