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Siemens 3RQ3018-1AB01 Phased-Out Coupler with Gold Contacts

Siemens 3RQ3018-1AB01 phased-out output coupler with gold contacts.

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ManufacturerSiemens

Part number3RQ3018-1AB01

Contacts 1 CO (Hard Gold-Plated)

Voltage 24V AC/DC

Width 6.2 mm

Terminals Screw

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1 Changeover Contact Hard Gold-Plated Contacts 24V AC/DC Operation Screw Terminals 6A Thermal Current Compact 6.2mm Width

Product description

The Siemens 3RQ3018-1AB01 is an output coupler relay, now a phased-out model, with the 3RQ4018-1AB01 designated as its successor. This relay is equipped with one change-over (CO) contact that is hard gold-plated, enhancing reliability for low-power switching. It operates on 24 V AC/DC and uses screw terminals for secure connections. The device has a thermal current rating of 6 A and a narrow width of 6.2 mm.

This hard gold-plated contact version is particularly suited for applications requiring high contact reliability with small signals or in environments with potential contact contamination. It serves to isolate and amplify signals from control devices like PLCs to actuators or indicators.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, stocks the Siemens 3RQ3018-1AB01. Secure this reliable component for your needs and experience our commitment to quality and customer service.

Technical specifications

Contacts	1 CO (Hard Gold-Plated)
Voltage	24V AC/DC
Width	6.2 mm
Terminals	Screw
Thermal Current	6 A
Status	Phased-out

Common applications

Low-Level Signal Switching

PLC Output Isolation

Control Systems

Automation Interfaces

Machine Control

Compatible systems

Digital PLC outputs Control signal interfaces Automation circuits

Also known as

Siemens 3RQ3018-1AB01 Siemens Gold Contact Coupler

Replaces / compatible with

This is a phased-out product; the preferred successor is the Siemens 3RQ4018-1AB01. It provides a reliable output interface for control systems.

Technical note

Expert tip

The hard gold plating ensures a low contact resistance and high switching reliability, especially important for interfacing with PLCs or sensitive digital inputs.

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Frequently asked questions

Why choose the Siemens 3RQ3018-1AB01 with hard gold-plated contacts?

The hard gold-plated contacts on the Siemens 3RQ3018-1AB01 are designed for enhanced reliability when switching low currents or in environments where oxidation or contamination could affect standard contacts. This makes it ideal for sensitive signal applications.