Siemens 3RF2310-1AA04 Industrial Control Relay Module

Siemens 3RF2310-1AA04 is a one-channel Sirius Classic DIN-rail solid-state relay (SSR) with zero-cross switching designed to switch AC mains loads from a 24 V DC control signal. It provides a single normally open output rated AC-51 for loads up to 10 A and up to 460 V AC, with a 40 °C ambient temperature rating, and uses screw-terminal connections for dependable field wiring in control cabinets. This phase-out device emphasizes low power consumption and compact DIN-rail mounting suitable for panel installations. The input drive is 24 V DC, enabling direct interfacing with typical PLC outputs, while the SSR’s zero-cross switching helps minimize electrical noise and impulsive stress on connected equipment. Siemens positions this module within the Sirius Classic range, and a direct substitute is available: 3RF3310-1AA04-0KN0. Applications include single-channel switching of heaters, valves, or similar AC-powered devices in automation panels, where galvanic isolation between control and power circuits and proven long-term reliability are required.