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Siemens SIRIUS 3RF2 Solid-State Contactor | 3RF2340-1AA04 | 40A

Siemens SIRIUS 3RF2 Solid-State Contactor

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ManufacturerSiemens

Part number3RF2340-1AA04

Type Solid-State Contactor

Phase 1-Phase

Rated Current 40A (AC-51 @ 40°C)

Output Voltage 48-460V AC

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1-Phase Solid-State Switching 40A Current Rating 48-460V AC Output 24V DC Control Screw Terminals Zero Point Switching

Product description

The Siemens 3RF2340-1AA04 is a 1-phase solid-state contactor from the SIRIUS 3RF2 series. It is rated for AC-51 at 40A and 40°C, with an output voltage range of 48-460V AC and a control voltage of 24V DC. This contactor features screw terminals for easy connection and zero-point switching for reduced electrical noise.

This solid-state contactor is ideal for switching resistive and inductive loads in various industrial applications, including motor control, heating systems, and lighting control. Its semiconductor-based switching offers longer life and reduced maintenance compared to electromechanical contactors.

Stanlo Automation, a veteran-owned surplus parts distributor, provides this Siemens solid-state contactor. Ensure reliable and efficient switching in your automation systems by sourcing from us.

Technical specifications

Type	Solid-State Contactor
Phase	1-Phase
Rated Current	40A (AC-51 @ 40°C)
Output Voltage	48-460V AC
Control Voltage	24V DC
Terminals	Screw
Switching	Zero Point Switching

Common applications

Motor Control

Heating Elements

Lighting Control

Industrial Automation

Process Control

Compatible systems

AC Motors Resistive Loads Inductive Loads

Also known as

SIRIUS 3RF2 Contactor Siemens SSR 40A Solid State Relay

Replaces / compatible with

Solid-state contactors are an alternative to electromechanical contactors, offering longer lifespan and reduced maintenance.

Technical note

Expert tip

When used for switching motor loads, ensure the contactor is adequately sized for the motor's locked-rotor current and starting characteristics.

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Frequently asked questions

What is the control voltage for the Siemens 3RF2340-1AA04 solid-state contactor?

The Siemens 3RF2340-1AA04 solid-state contactor operates with a 24V DC control voltage. This low DC voltage is used to switch the higher AC output voltage.