Siemens Contact block with 1NC, screw terminal Part number 3SU1400-2AA10-1CA0

Product Overview

Contact module with 1 contact element, 1 NC, screw-type terminal, for floor mounting from the SIRIUS ACT series. This contact block combines the unique floor/base mounting configuration with normally closed functionality, designed to control the flow of electricity through switches in switching power circuits.

Key Features

• 1 Normally Closed (NC) contact element
• Screw-type terminal connection for reliable wiring
• Floor/base mounting configuration - unique mounting option in the series
• Innovative snap-on concept for easy installation with one hand and without special tools
• Constructed from highly durable wear-resistant materials
• Part of the SIRIUS ACT portfolio with worldwide product approvals
• Silver alloy contacts for reliable electrical performance

Technical Specifications

• Contact Configuration: 1 Normally Closed contact
• Contact Material: Silver alloy
• Voltage Rating: Up to 500V AC/DC
• Current Rating: 10A at 24V AC, 6A at AC-15 230V, varying ratings based on voltage
• AC Current Ratings: 10A at 24/48/110 VAC, 8A at 230/400 VAC, 6A at 24/48/110/230 VAC, 3A at 400 VAC, 1.4A at 500 VAC
• DC Current Ratings: 10A at 24 VDC, 5A at 48 VDC, 2.5A at 110 VDC, 1A at 230 VDC, 0.3A at 230/400/500 VDC
• Connection Type: Screw connection
• Mounting Method: Floor fastening/Base mounting
• Dimensions: 33.2mm H x 9.8mm W x 27.7mm D
• Protection Rating: Connection IP20/Enclosures IP40
• Net Weight: 0.008 kg
• Packaging Dimensions: 78.00 x 107.00 x 17.00 mm
• Country of Origin: Germany
• EAN: 4011209950924
• UPC: 804766073373

Compliance & Standards

• RoHS compliant since 01.10.2014
• WEEE (2012/19/EU) Take-Back Obligation: Yes
• Export Control Regulations: AL: N / ECCN: N

Applications This floor/base mounted contact module with normally closed functionality is ideal for safety-critical applications where fail-safe operation is required and mounting from below or at the base level is preferred. Perfect for emergency stop circuits, safety interlocks, alarm monitoring systems, and applications where the contact needs to be closed in the rest position. Commonly used in control panels, machinery bases, and applications where access from the rear or bottom is more convenient.

Mounting & Installation

• Floor/base mounting design - mounts from below or at base level
• Snap-on concept allows one-hand installation
• No special tools required for assembly
• Compatible with SIRIUS ACT command and signaling devices
• Alternative mounting option to standard front plate mounting

Floor/Base Mounting Benefits

• Rear access installation: Ideal when front panel space is limited
• Protected mounting: Contact module is less exposed than front-mounted variants
• Space efficient: Allows for more compact front panel designs
• Maintenance accessibility: Easy access from behind or below the panel
• Flexible panel design: Enables creative control panel layouts
• Reduced front panel complexity: Keeps the operator interface clean and simple

Normally Closed Contact Advantages

• Fail-safe operation: Contact is closed in rest position, opens when activated
• Safety applications: Ideal for emergency stop and safety interlock circuits
• Alarm systems: Perfect for monitoring applications where open circuit indicates fault
• Power control: Suitable for applications requiring power interruption upon activation
• Fault detection: Enables detection of broken wires or connection failures
• Compliance ready: Meets requirements for safety-rated applications

Screw Terminal Advantages

• Secure connections: Reliable mechanical connection for industrial environments
• High current capacity: Suitable for demanding electrical loads
• Easy maintenance: Standard screwdriver access for connection changes
• Vibration resistant: Mechanical screw connection withstands industrial vibrations
• Wide wire compatibility: Accommodates various wire types and gauges

Product Classification

• eClass: 27-37-13-02
• ETIM: EC000041
• UNSPSC: 39-12-22-21

Download existing graphical data for this product:

• Product Datasheet (PDF)
• Product Details and Documentation