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Siemens 3RH1921-2FJ22 Auxiliary Switch Block - 2 NO + 2 NC

Siemens auxiliary switch block with 2 NO + 2 NC contacts.

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ManufacturerSiemens

Part number3RH1921-2FJ22

Contact Configuration 2 NO + 2 NC

Mounting Type Front Mount

Manufacturer Siemens

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12-month warranty

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Veteran-owned

CAGE: 9NK75

2 NO + 2 NC contacts Front mounting SIRIUS compatibility Expands contactor functions

Product description

The Siemens 3RH1921-2FJ22 is an auxiliary switch block designed to expand the functionality of Siemens contactor relays and motor contactors. It features a standard configuration of 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, providing versatile switching capabilities for control circuits. This block is intended for front mounting and integrates seamlessly with compatible Siemens SIRIUS devices.

This auxiliary switch block is crucial for adding auxiliary contacts to motor starters and control systems. It enables more complex control logic, status indication, and interlocking functions within industrial automation environments. The reliable performance of these contacts ensures the integrity of control signals.

Stanlo Automation, a veteran-owned surplus parts distributor, is your source for the Siemens 3RH1921-2FJ22. We specialize in providing high-quality industrial automation components. Rely on Stanlo Automation for your surplus part needs, ensuring operational efficiency and value.

Technical specifications

Contact Configuration	2 NO + 2 NC
Mounting Type	Front Mount
Manufacturer	Siemens

Common applications

Motor Control

Automation Systems

Control Panels

Signaling

Interlocking

Compatible systems

Compatible with Siemens SIRIUS 3RT contactors and 3RH contactor relays

Also known as

3RH19212FJ22, Siemens 3RH1921-2FJ22, SIRIUS 3RH1921-2FJ22

Replaces / compatible with

This product is part of the Siemens SIRIUS line and is designed to augment existing contactor relays and motor contactors. Please consult the successor series (SIRIUS 3RH2) for current offerings.

Technical note

Expert tip

This auxiliary switch block utilizes spring-type terminals, ensuring a secure and reliable connection, which is vital for the consistent performance of control circuits.

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Frequently asked questions

What is the purpose of the Siemens 3RH1921-2FJ22 auxiliary switch block?

The Siemens 3RH1921-2FJ22 auxiliary switch block is used to add extra switching contacts to Siemens contactors and contactor relays. This expansion allows for more complex control sequences, status monitoring, and safety interlocks in industrial automation systems.