Siemens 3RF2 Series Solid State Relay, 40 A Load, Panel Mount, 600 V Load, 30 V dc Control

RS Stock No.:: 612-9040
Mfr. Part No.:: 3RF2440-1AC45
Brand:: Siemens

Siemens 3RF2 Series Solid State Relay, 40 A Load, Panel Mount, 600 V Load, 30 V dc Control

Subtotal (1 unit)*

£243.21

(exc. VAT)

£291.85

(inc. VAT)

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In Stock

3 unit(s) ready to ship
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Plus 999,999,996 unit(s) shipping from 20 October 2025

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Units	Per unit
1 +	£243.21

*price indicative

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RS Stock No.:: 612-9040
Mfr. Part No.:: 3RF2440-1AC45
Brand:: Siemens

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Maximum Load Current	40 A
	Mounting Type	Panel Mount
	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 Cross
	Control Voltage Range	4 → 30 V dc
	Minimum Load Current	0.5 A
	Range	SIRIUS 3RF
	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	1/2 cycle + 1 ms
	Dimensions	157.5 x 121 x 100mm
	Minimum Operating Temperature	-25°C
	Maximum Operating Temperature	+60°C
	Standards Met	CE, CSA, UL
	Depth	121mm
	Length	157.5mm
	Off State Leakage Current	10 mA
	Height	100mm
	Operating Temperature Range	-25 → +60°C

	Select all
	Brand Siemens
	Maximum Load Current 40 A
	Mounting Type Panel Mount
	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 Cross
	Control Voltage Range 4 → 30 V dc
	Minimum Load Current 0.5 A
	Range SIRIUS 3RF
	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 1/2 cycle + 1 ms
	Dimensions 157.5 x 121 x 100mm
	Minimum Operating Temperature -25°C
	Maximum Operating Temperature +60°C
	Standards Met CE, CSA, UL
	Depth 121mm
	Length 157.5mm
	Off State Leakage Current 10 mA
	Height 100mm
	Operating Temperature Range -25 → +60°C

COO (Country of Origin):: DE

Siemens Solid State Relay, 3 Phases, 0.9W Power Loss - 3RF2440-1AC45

Use this solid state relay from Siemens to quickly and reliably control the electrical load to your circuit. When the control terminals receive a voltage, a diode emits a light that energises an optocoupler, closing the contacts and allowing the full current to flow through the circuit. This relay has compact dimensions of just 95 (H) x 119.5 (W) x 130mm (D), so it's a good choice for installation in applications where space is at a premium. As it has no moving parts, there's no risk of mechanical wear, so you can be sure of the unit's long service life in applications such as motors, pumps and compressors.

Features & Benefits

• Screw terminals for a secure electrical connection, even with vibration
• 'On' delay of just 1ms for fast switching
• Wide operating voltage range between 48 and 600V AC for compatibility with low-voltage and medium-voltage applications
• IP20 rating means it's finger-safe and protected against objects larger than 12mm

What's the operating temperature range of this product?

This SSR has a wide operating temperature range between -25°C and +60°C, so it's suitable for use in harsh industrial environments.

Zero Voltage Relays

Note

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