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Siemens 3RH1921-1MA11 Auxiliary Switch Block - 1 NO + 1 NC

Siemens 3RH1921-1MA11 2-pole auxiliary switch block with 1 NO + 1 NC contacts.

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ManufacturerSiemens

Part number3RH1921-1MA11

Contacts 1 NO + 1 NC

Poles 2

Terminal Type Screw

Standards EN 50005

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Veteran-owned

CAGE: 9NK75

1 NO + 1 NC configuration Screw terminal connections EN 50005 compliant Cable entry at the bottom Phased-out product

Product description

The Siemens 3RH1921-1MA11 is a 2-pole auxiliary switch block offering 1 normally open (NO) and 1 normally closed (NC) contact configuration. It is designed for motor contactors, compliant with EN 50005 standards, and features bottom cable entry with screw terminals.

This versatile auxiliary switch block is suitable for a wide range of control and signaling applications in industrial automation, including motor control circuits, interlocking, and status feedback. Its placement with bottom cable entry is useful in various mounting scenarios.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RH1921-1MA11 to meet your automation component needs. We are dedicated to providing quality and reliable parts for your critical systems.

Technical specifications

Contacts	1 NO + 1 NC
Poles	2
Terminal Type	Screw
Standards	EN 50005
Cable Entry	Bottom
Product Type	Auxiliary Switch Block

Common applications

Motor control

Control panels

Automation systems

Machine building

Safety circuits

Interlocking

Compatible systems

Siemens Motor Contactors (verify specific model and size)

Also known as

Siemens 3RH1921-1MA11 SIRIUS auxiliary switch Siemens 1NO1NC auxiliary

Replaces / compatible with

This is a phased-out product. The successor is the SIRIUS 3RH2 series.

Technical note

Expert tip

The bottom cable entry is a key feature of this auxiliary switch block, offering flexibility in wiring installations within industrial control cabinets.

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Frequently asked questions

Can you describe the contact configuration and mounting features of the Siemens 3RH1921-1MA11 auxiliary switch block?

The Siemens 3RH1921-1MA11 auxiliary switch block has a 2-pole setup with 1 normally open (NO) and 1 normally closed (NC) contact. It also features bottom cable entry.