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Siemens Auxiliary Contact, 2 Contact, 1NC + 1NO, Side Mount, Sirius Classic 3RH1

RS Stock No.:: 746-0718
Mfr. Part No.:: 3RH1921-1JA11
Brand:: Siemens

Siemens Auxiliary Contact, 2 Contact, 1NC + 1NO, Side Mount, Sirius Classic 3RH1

Subtotal (1 unit)*

£10.27

(exc. VAT)

£12.32

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

34 unit(s) ready to ship
Plus 72 unit(s) ready to ship from another location
Plus 999,999,965 unit(s) shipping from 22 September 2025

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Units	Per unit
1 +	£10.27

*price indicative

RS Stock No.:: 746-0718
Mfr. Part No.:: 3RH1921-1JA11
Brand:: Siemens

Siemens 3RH1 Series Auxiliary Contact, 1NC + 1NO Normal State Configuration, Side Mount Mounting Style - 3RH1921-1JA11

This auxiliary contact enhances electrical control systems, ensuring dependable operation across diverse applications. Its integration improves contactor functionality, offering key advantages for automation and electrical systems. The dual configuration of normally closed (NC) and normally open (NO) contacts allows for versatile operations in various settings.

Features & Benefits

• Features 1 NO and 1 NC for adaptable control
• Side mount design optimises space
• Utilises screw terminal connections for secure wiring
• Offers high mechanical endurance with 10 million cycles
• Supports a broad range of operational currents for increased versatility
• Designed for easy integration with 3RT1 contactors

Applications

• Utilised in automation systems for control tasks
• Facilitates status indication in industrial machinery
• Ideal for use with 3RT10 and 3RT12 contactors
• Suitable for safety circuits needing reliable signalling
• Commonly employed in electrical distribution panels

How does the dual contact configuration benefit my system?

The dual configuration allows for both control and signalling functions in one unit, enhancing operational efficiency.

What is the maximum operational temperature for this device?

The device operates effectively in temperatures ranging from -25°C to +60°C, ensuring adaptability to various environments.

Can it be used with other brands' contactors?

While designed for 3RT1 series contactors, compatibility with other brands may vary based on specific electrical requirements.

How should I maintain it for optimal performance?

Regular inspection and cleaning of terminals can help maintain connection integrity and extend the product's lifespan.

What type of cable can be connected to the terminals?

The terminals accommodate solid or stranded cables within a cross-section of 0.5 to 2.5mm², ensuring versatility in installation.

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Number of Contacts	2
	Normal State Configuration	1NC + 1NO
	Mounting Style	Side Mount
	Range	Sirius Classic
	Series	3RH1
	Terminal Type	Screw
	Pole and Throw Configuration	DP

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