Siemens Auxiliary Contact, 2 Contact, 2 NC, 3RH, Snap-On, 10 A, 3RH1921-1EA02

View all Auxiliary Contacts

Subtotal (1 unit)*

R 271,16

(exc. VAT)

R 311,83

(inc. VAT)

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RS stock no.:
159-419
Mfr. Part No.:
3RH1921-1EA02
Manufacturer:
Siemens
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Brand

Siemens

Number of Contacts

2

Product Type

Auxiliary Contact

Normal State Configuration

2 NC

Series

3RH

Mount Type

Snap-On

Terminal Type

Screw

Minimum Operating Temperature

-25°C

Rated Insulation Voltage Ui

500V

Maximum Operating Temperature

60°C

Standards/Approvals

RoHS, and KC, UKCA, CE, UL, CCC

Siemens 3RH Series Auxiliary Contact, 10A Contact Current, 500V Rated Insulation Voltage - 3RH1921-1EA02


This auxiliary contact is a Snap-on auxiliary switching device designed to extend control capabilities in electrical systems. It provides additional normally closed switching points for monitoring or interlocking purposes and is intended for attachment to compatible contactors and control modules within industrial automation and electrical installations.

Features and Benefits:


• Two normally closed contacts offering simple state monitoring
• Rated operational current 10A enabling moderate control loads
• Rated insulation voltage 500V supporting higher-voltage circuits
• Screw terminals for secure conductor connections
• Snap-on mounting for Rapid installation onto existing devices

Applications


• Suitable for adding feedback to industrial contactors
• Ideal for interlock circuits in motor control panels
• Used with control relays in automation racks
• Can be used for status indication on distribution switchgear

What Terminal type does it use for wiring?


It uses screw terminals that provide clamped conductor connections for standard control wiring.

How many switching elements are provided and what is their configuration?


There are two switching elements configured as normally closed contacts for circuit interruption when actuated.

What mounting method is required for installation?


The unit employs a Snap-on mount for direct attachment to compatible contactor bodies or mounting rails.

What temperature range should be observed for reliable operation?


The operating environment should remain within -25°C to 60°C to maintain specification compliance.

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