Siemens 3RF2 Series Solid State Relay, 20 A Load, DIN Rail Mount, 600 V Load, 30 V dc Control

RS Stock No.:: 612-9028
Mfr. Part No.:: 3RF2420-1AC45
Brand:: Siemens

Siemens 3RF2 Series Solid State Relay, 20 A Load, DIN Rail Mount, 600 V Load, 30 V dc Control

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Subtotal (1 unit)*

$694.10

(exc. GST)

$798.22

(inc. GST)

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In Stock

2 unit(s) ready to ship from another location
Plus 5 unit(s) shipping from 05 January 2026

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Units	Per unit
1 - 2	$694.10
3 - 4	$666.34
5 +	$638.57

*price indicative

RS Stock No.:: 612-9028
Mfr. Part No.:: 3RF2420-1AC45
Brand:: 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
	Maximum Load Current	20 A
	Mounting Type	DIN Rail
	Maximum Load Voltage	600 V
	Minimum Load Voltage	48 V
	Maximum Control Voltage	30 V dc
	Minimum Control Voltage	4 V dc
	Switching Type	Zero Crossing
	Control Voltage Range	4 → 30 V dc
	Range	SIRIUS 3RF
	Minimum Load Current	0.5 A
	Number of Poles	3
	Terminal Type	Screw
	Contact Configuration	3P-NO
	Output Device	Thyristor
	Load Voltage Range	48 → 600V
	Series	3RF2
	Maximum Turn On Time	1 (+1/2 cycle) ms
	Dimensions	90 x 112.5 x 100mm
	Depth	112.5mm
	Standards Met	CE, CSA, UL
	Maximum Operating Temperature	+60°C
	Minimum Operating Temperature	-25°C
	Operating Temperature Range	-25 → +60°C
	Length	90mm
	Off State Leakage Current	10 mA
	Height	100mm

	Select all
	Brand Siemens
	Maximum Load Current 20 A
	Mounting Type DIN Rail
	Maximum Load Voltage 600 V
	Minimum Load Voltage 48 V
	Maximum Control Voltage 30 V dc
	Minimum Control Voltage 4 V dc
	Switching Type Zero Crossing
	Control Voltage Range 4 → 30 V dc
	Range SIRIUS 3RF
	Minimum Load Current 0.5 A
	Number of Poles 3
	Terminal Type Screw
	Contact Configuration 3P-NO
	Output Device Thyristor
	Load Voltage Range 48 → 600V
	Series 3RF2
	Maximum Turn On Time 1 (+1/2 cycle) ms
	Dimensions 90 x 112.5 x 100mm
	Depth 112.5mm
	Standards Met CE, CSA, UL
	Maximum Operating Temperature +60°C
	Minimum Operating Temperature -25°C
	Operating Temperature Range -25 → +60°C
	Length 90mm
	Off State Leakage Current 10 mA
	Height 100mm

COO (Country of Origin):: DE

Siemens Solid State Relay, 3 Poles, 48 to 600V AC Operating Voltage Range - 3RF2420-1AC45

Control the flow of current to your devices using this solid state relay from Siemens. As it features zero-cross switching, it helps to reduce noise by turning on when the load current is near 0V. You can snap this unit onto a DIN rail and screw it firmly in place, so installation is quick without the need for specialised tools. Screw terminals help to ensure secure and vibration-proof electrical connections. The relay has built-in short circuit protection to minimise the risk of electrical damage caused by faults. You'll find an SSR like this one used in heating and lighting applications.

Features & Benefits

• Wide operating voltage range between 48 and 600V AC for wide compatibility
• IP20 rating means it's finger-safe and protected against objects larger than 12mm
• Broad operating temperature range between -25°C and +60°C for use in demanding environments

What's the advantage of a solid-state relay?

Unlike electromechanical relays, SSRs have no moving parts. This means there's a very low risk of wear, which prolongs the life of the unit. SSRs also switch on and off much faster than electromechanical relays, so they're a good choice for use in applications where you need sensitive switching.

Zero Voltage Relays

Note

Temperature can affect current rating; please consult the data sheet for potential derating.