Siemens Auxiliary switch block, screw, 2NO, size S00

Product Overview

The Siemens 3RH1911-1FA20 is a front-mounted auxiliary switch block featuring 2 NO (normally open) contacts, designed for Size S00 auxiliary and motor contactors according to EN 50005 standards. This SIRIUS auxiliary switch block provides reliable switching capabilities for control circuit applications.

Key Features:

• Contact Configuration: 2 NO contacts (2 normally open)
• Identification Number: 20 according to EN 50005
• Mounting Type: Front mounting (snap-on design)
• Terminal Type: Screw terminal connections
• Pole Configuration: 2-pole auxiliary switch block
• Size Compatibility: Size S00 for auxiliary and motor contactors

Technical Specifications:

• Current Rating: 10A at 240V
• Standards Compliance: IEC 60947-5-1, EN 60947 (VDE 0660), UL 508
• Operating Standards: AC and DC operation capability
• Contact Type: Two normally open contacts
• Installation: Snap-on front mount design

Installation Features: The auxiliary switch block features a snap-on front mount design with screw terminal connections. Only one auxiliary block can be mounted per contactor, providing reliable and secure installation for industrial applications.

Applications: Designed for use with 3RH11 control relays and 3RT101 contactors. The auxiliary switch block provides additional normally open contacts for control circuit applications, signaling, and switching functions in industrial automation systems.

Compatibility Range: Compatible with Sirius size S00 contactors including 3RT1015, 3RT1016, and 3RT1017 models. Additional contact arrangements are available such as the 3RH1911-1FA11 or 3RH1911-1FA02 for different switching requirements.

Design Advantages: The 3RT1 contactors are suitable for use in any climate and are safe from touch to DIN VDE 0106 Part 100. The contactors are available with screw connections or with Cage Clamp connections, providing flexible installation options.

Terminal Configuration: Features standard-compliant terminal designations with screw terminal connections for reliable and secure wire connections. The auxiliary contact block integrates seamlessly with the basic contactor units.

Expandability: An auxiliary contact is integrated in the basic unit of size S00 contactors. The basic units of sizes S0 to S3 only contain the main conducting paths and can be extended with auxiliary switch blocks to provide additional switching capabilities.

System Integration: Cabinet units with 2 NO + 2 NC configurations are available with terminal designations according to standards. The modular design allows for flexible system configuration based on application requirements.

Physical Specifications:

• Net Weight: 0.033 kg
• Package Dimensions: 44.00 x 42.00 x 57.00 mm
• Country of Origin: Czech Republic

Standards & Compliance:

• EAN: 4011209267299
• UPC: 754554415789
• RoHS: Compliant since 01.07.2006
• WEEE: Take-back obligation applies

Download existing graphical data for this product:

• Product Datasheet
• Technical Specifications
• Installation Guidelines
• Product Documentation
• Compatibility Informatio