Siemens Auxiliary switch block, screw, 4-pole, 1NO + 2NC

Product Overview

The Siemens 3RH1911-1HA12 is a front-mounted auxiliary switch block featuring 1 NO + 2 NC contacts, designed for motor contactors according to EN 50012 standards. This SIRIUS auxiliary switch block provides reliable switching capabilities for control circuit applications.

Key Features:

• Contact Configuration: 1 NO + 2 NC contacts (1 normally open + 2 normally closed)
• Identification Number: 22 E according to EN 50012
• Mounting Type: Front mounting (snap-on design)
• Terminal Type: Screw terminal connections
• Pole Configuration: 3-pole (4-pole auxiliary switch block)
• Size Compatibility: Size S00 motor contactors

Technical Specifications:

• Current Rating: 10A at 240V DC (DC-13), 6A at 24V DC (DC-13)
• AC Current Rating: 6A at 220-230V (AC-15), 0.3A at 24V (AC-15)
• Voltage Rating: 690V insulation voltage, 6kV surge voltage rating
• Contact Rating: 10A at AC-12
• Operating Voltage: A600/Q600 specification
• Standards Compliance: IEC 60947-5-1, EN 60947 (VDE 0660), UL 508

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

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

Compatibility Range: Compatible with Sirius size S00 contactors including 3RT1015, 3RT1016, 3RT1017, 3RT1316, 3RT1317, 3RT1515, 3RT1516, 3RT1517, 3RT1617 contactors and 3RH relays.

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-type 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 can be extended with auxiliary switch blocks to provide additional switching capabilities as required by the application.

Physical Specifications:

• Net Weight: 0.039 kg
• Package Dimensions: 44.00 x 42.00 x 57.00 mm
• Country of Origin: Czech Republic

Standards & Compliance:

• EAN: 4011209267367
• UPC: 754554415864
• RoHS: Compliant since 01.07.2006
• WEEE: Take-back obligation applies

Download existing graphical data for this product:

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