Siemens Control relay, screw terminal, 10-pole, 10NO, 24VDC, 10A Part number 3TH4310-0BB4

Product Overview

The Siemens 3TH4310-0BB4 is a 4-pole industrial control relay designed for reliable control and auxiliary switching functions in electrical automation systems. It operates with a 24 V DC coil and features 4 normally open (NO) contacts for signal switching, control logic, and interlocking applications. Built with a compact housing and robust mechanical endurance, it is ideal for integration into control panels, motor circuits, and PLC interfaces.

Key Features

• Type: Industrial control relay with 4 NO contacts
• Control Voltage: 24 V DC coil for direct current control circuits
• Contact Configuration: 4 normally open (NO) contacts
• Rated Operational Current: 10 A at AC-15, 230 V
• Electrical Endurance: Up to 1 million operating cycles under nominal load
• Mechanical Durability: Up to 30 million operating cycles
• Mounting: DIN-rail or screw-mountable base for easy installation
• Terminal Type: Screw terminals for secure and easy wiring
• Design: Compact size suitable for standard control panels
• Country of Origin: Germany

Technical Specifications

• Product Series: SIRIUS 3TH4 Control Relays
• Rated Coil Voltage: 24 V DC
• Number of Contacts: 4 NO
• Contact Rating: 10 A at AC-15, 230 V / 5 A at DC-13, 24 V
• Rated Insulation Voltage: 690 V
• Rated Impulse Withstand Voltage: 6 kV
• Operating Frequency: 10–50 operations per minute (mechanical)
• Switching Capacity: 2,000 VA (AC-15) / 120 W (DC-13)
• Mounting Type: DIN-rail or front panel mounting
• Connection Type: Screw terminals (M3.5)
• Ambient Temperature Range: -25 °C to +60 °C
• Mechanical Life: Up to 30 million operations
• Electrical Life: Up to 1 million operations (AC-15)
• Protection Class: IP20 (finger-safe terminals)
• Dimensions (W × H × D): 45 mm × 58 mm × 73 mm
• Weight: Approx. 0.18 kg

Compliance & Certifications

• Standards: IEC 60947-5-1 (Control Circuit Devices and Switching Elements)
• CE Marking: Conforms to EU safety and EMC directives
• UL / CSA Certified: Approved for industrial control applications in North America
• RoHS Compliant: Free from hazardous substances
• REACH Conformant: Meets EU environmental and chemical safety requirements
• Protection Class: IP20 (finger-safe terminal design)

Applications

Ideal for auxiliary control, signaling, and interlocking functions in electrical automation systems. Commonly used in motor control centers, PLC interfaces, and switching cabinets. Suitable for applications in manufacturing, building automation, and process industries requiring reliable control and compact design.