Siemens 3RF2 Series Solid State Relay, 20 A Load, DIN Rail Mount, 460 V Load, 30V Control

RS Stock No.:: 203-2092
Mfr. Part No.:: 3RF2320-1AA44
Manufacturer:: Siemens

Siemens 3RF2 Series Solid State Relay, 20 A Load, DIN Rail Mount, 460 V Load, 30V Control

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MYR814.03

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RS Stock No.:: 203-2092
Mfr. Part No.:: 3RF2320-1AA44
Manufacturer:: Siemens

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Product Type	Solid State Relay
	Maximum Load Current	20A
	Mount Type	DIN Rail
	Maximum Load Voltage	460V
	Minimum Load Voltage	48V
	Maximum Control Voltage	30V
	Minimum Control Voltage	4V
	Series	3RF2
	Terminal Type	Screw
	Contact Configuration	SPST
	IP Rating	IP20
	Switching Function	Zero Cross Switching
	Minimum Operating Temperature	-25°C
	Maximum Operating Temperature	60°C
	Standards/Approvals	RoHS
	Length	123.5mm
	Height	100mm
	Width	22.5mm
	Output Type	MOSFET

	Select all
	Brand Siemens
	Product Type Solid State Relay
	Maximum Load Current 20A
	Mount Type DIN Rail
	Maximum Load Voltage 460V
	Minimum Load Voltage 48V
	Maximum Control Voltage 30V
	Minimum Control Voltage 4V
	Series 3RF2
	Terminal Type Screw
	Contact Configuration SPST
	IP Rating IP20
	Switching Function Zero Cross Switching
	Minimum Operating Temperature -25°C
	Maximum Operating Temperature 60°C
	Standards/Approvals RoHS
	Length 123.5mm
	Height 100mm
	Width 22.5mm
	Output Type MOSFET

COO (Country of Origin):: DE

Siemens 3RF2 Series Solid State Contactor, 20A Maximum Load Current, 48-460V Operating Voltage - 3RF2320-1AA44

This solid state contactor is a single-pole device designed for AC switching in industrial control systems. It utilises MOSFET output stages with zero-cross switching to manage single-phase loads up to 20A within an AC operating range of 48-460V and delivers Rapid on/off response suitable for frequent switching. The unit mounts on standard 35mm DIN rail and provides finger-safe access from the front for panel installation in factory, machine control and process environments.

Features and Benefits:

• 20A rated current reduces heat in continuous AC-1 applications
• Zero-cross switching minimises inrush and electromagnetic disturbance
• MOSFET output gives low off-state leakage for safer standby
• 4 to 30V control range allows low-voltage drive from PLC outputs
• IP20 protection enables safe front access in enclosed panels

Applications

• Suitable for heater and resistive element switching in machinery
• Used with PLCs for automated single-phase load control
• Ideal for Compact control panels requiring space-saving devices
• Can be used for frequent switching in packaging lines
• Suitable for retrofit of electro-mechanical contactors to solid state

What control current is required at the minimum control voltage?

At 4V control input the device typically draws 18mA.

How does ambient temperature affect continuous load capacity?

Rated current applies up to 40°C

derating is required above this temperature.

What conductor sizes are accepted at the main terminals?

Solid or stranded conductors from 1.5…6mm² can be connected for the main contacts.

How is the device secured to the panel or rail?

It fits 35mm mounting rails and can be screw-fixed for side-by-side mounting.