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Siemens 3RF2120-2AA02 1-Phase Solid State Relay - 20A

Siemens 3RF2120-2AA02 1-Phase Solid State Relay

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ManufacturerSiemens

Part number3RF2120-2AA02

Type Solid State Relay

Phase 1-Phase

Width 22.5 mm

Load Current 20 A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Compact 22.5mm width 20A switching capacity 24-230V AC load 24V DC control voltage Zero-point switching Spring-loaded terminals

Product description

The Siemens 3RF2120-2AA02 is a 1-phase solid state relay from the 3RF21 series, designed for efficient and reliable switching. It features a compact 22.5 mm width, making it ideal for space-constrained control cabinets. This relay handles a load current of 20A at voltages ranging from 24 to 230V AC, with a control voltage of 24V DC. It utilizes spring-loaded terminals for secure connections and operates with zero-point switching for reduced electrical noise.

This solid state relay is well-suited for applications requiring frequent and precise switching, such as in industrial automation, HVAC systems, and control panels. Its wear-free and silent operation makes it ideal for environments where noise sensitivity is a concern, like offices or hospitals. The zero-switching capability minimizes interference with other electronic components.

Stanlo Automation, a veteran-owned business, offers this Siemens 3RF2120-2AA02 as part of its extensive inventory of surplus industrial automation parts. We provide reliable sourcing for your automation needs, ensuring quality and availability. Trust Stanlo Automation for your critical component requirements.

Technical specifications

Type	Solid State Relay
Phase	1-Phase
Width	22.5 mm
Load Current	20 A
Load Voltage	24-230 V AC
Control Voltage	24 V DC
Terminals	Spring-loaded
Switching	Zero-point

Common applications

Industrial Automation

HVAC Systems

Control Panels

Noise-sensitive environments

Lighting Control

Compatible systems

Siemens SIRIUS 3RF21 series

Also known as

Siemens 3RF2120-2AA02 SSR 3RF21 Series Relay Siemens 20A Solid State Relay

Replaces / compatible with

Compatible with Siemens SIRIUS 3RF21 series accessories and heat sinks.

Technical note

Expert tip

Requires adequate heat sinking for operation at rated load, especially in higher ambient temperatures.

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Frequently asked questions

What are the key specifications of the Siemens 3RF2120-2AA02 solid state relay?

The Siemens 3RF2120-2AA02 is a 1-phase solid state relay with a 22.5mm width, capable of switching 20A at 24-230V AC. It features a 24V DC control voltage, spring-loaded terminals, and zero-point switching for reduced electrical noise. It is designed for mounting on cooling surfaces.