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Siemens 3RQ4118-2AE01 — Motor Control Accessories

Siemens 3RQ4118-2AE01 SIRIUS coupling relay, 115 V AC/DC, 6

MPN3RQ4118-2AE01

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Siemens SIRIUS 3RQ4 coupling relay, narrow design, 3RQ4118-2AE01, 115 V AC/DC coil, 1 change-over contact, 6 A thermal current, push-in spring-loaded terminals, 6.2 mm width.

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Siemens 3RQ4118-2AE01 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RQ4118-2AE01 — Specifications
Parameter	Value
Group code	R711
Product group	4950
Product class	A: Standard product which is a stock item could be returned within the returns guidelines/period.
Series	SIRIUS 3RQ4 coupling relays, narrow design
Export control regulations	AL : N / ECCN : EAR99
Compliance with the substance restrictions according to RoHS directive	Since: 26-09-24

Product details

The Siemens 3RQ4118-2AE01 is a SIRIUS 3RQ4 coupling relay in the narrow 6.2 mm housing. It's an output coupler with a plug-in relay, meaning the relay base stays wired and the relay module snaps in or out without disturbing the terminals. The coil is rated for 115 V AC/DC, and the single change-over contact is rated for a thermal current of 6 A. The contacts are hard gold-plated, which is the detail that matters for low-level or dry switching circuits — standard silver-tin contacts can oxidize and fail to conduct at signal-level currents, but the gold plating keeps the path reliable down into the milliampere range.

Termination and panel fit

Termination is via spring-loaded push-in terminals. The relay is 6.2 mm wide.

Frequently asked questions

What does the hard gold-plated contact mean for my application?

Hard gold plating on the contacts prevents oxidation and ensures reliable switching at low currents and voltages — think PLC inputs, signal-level loads, or dry circuits where standard contacts might not conduct. The 6 A thermal current rating still covers higher loads, but the gold is there for the low-level end.