Siemens 3RT2 Control Relay 3NO, 9 A F.L.C, 22 A Contact Rating, 24 Vdc, 3P, SIRIUS Part number 3RT2016-1HB42

Product Overview

The Siemens 3RT2016-1HB42 is a 3-pole SIRIUS 3RT2 coupling contactor (size S00) with screw-terminal main connections, designed for control via a 24 V DC coil. It is rated for AC-3 duty up to 9 A at 400 V (approx. 4 kW) and AC-1 current up to 22 A at 400 V. The unit features one normally-closed auxiliary contact and is built for reliable switching in control circuits and automation processes.

Key Features

• Coupling/contact relay for motor control and automation switchgear
• Size S00 compact footprint – three main poles
• Rated control coil: 24 V DC (0.7…1.25 × Us)
• Screw-type terminals for main and auxiliary circuit wiring
• Auxiliary contact: 1 NC (normally closed) for control feedback
• High insulation and surge voltage resistance: 6 kV typical
• Extensive endurance: approx. 30 million mechanical operations

Technical Specifications

• Article Number: 3RT2016-1HB42
• Series: SIRIUS 3RT2, coupling contactor / relay type
• Frame Size: S00
• Main Poles: 3 (three-phase)
• Rated Operational Current (AC-3, 400 V): 9 A
• Rated Operational Current (AC-1, 400 V): 22 A
• Control Coil Voltage: 24 V DC
• Auxiliary Contacts: 1 NC
• Insulation Voltage (Ui): 690 V
• Surge Voltage Resistance: 6 kV
• Mechanical Service Life (Typical): 30 000 000 operations
• Ambient Operating Temperature: –25 °C to +60 °C

Compliance & Certifications

• Manufactured to Siemens SIRIUS motor-control component standards
• Designed in accordance with IEC/EN standards for coupling contactors and relays

Applications

Ideal for automation control circuits, PLC-driven contactor switching, coupling operations and panel-mounted starters where compact size and reliable screw-terminal wiring are required. Suitable for use in machine automation, conveyor systems, modular switchgear and other industrial applications where a 24 V DC control signal is used.