Siemens 3RT2016-1SB42 SIRIUS Power Contactor, 9A, 4kW, 24V DC, 1NC Original Brand New

Overview

The Siemens 3RT2016-1SB42 is a compact and high-performance SIRIUS power contactor designed for reliable switching of electric motors and other loads up to 9A (AC-3) or 4kW at 400V. As part of the globally approved 3RT2 series, this 3-pole contactor in Size S00 features a low-consumption 24V DC coil with an enhanced operating range of 0.85−1.85⋅Uc​.

The integrated suppressor diode ensures protection against voltage peaks, simplifying wiring and enhancing coil durability. It comes equipped with one normally closed (1 NC) auxiliary contact and uses robust screw terminals for secure, low-maintenance wiring. Ideal for integration into PLC-controlled systems.

Key Features

• Product Number: 3RT2016-1SB42
• Contactor Series: SIRIUS 3RT20
• Operating Current (AC-3e/AC-3): $9\text{ A}$ at $400\text{ V}$
• Operating Power: $4\text{ kW}$ at $400\text{ V}$
• Poles: 3-pole
• Control Voltage (Coil): $24\text{ V DC}$
• Coil Operating Range: 0.85−1.85⋅Uc​ (wide voltage range)
• Surge Protection: Integrated suppressor diode
• Auxiliary Contacts: 1 NC (Normally Closed)
• Terminal Type: Screw terminal
• Frame Size: S00

Benefit

1. High Reliability: Built with Siemens SIRIUS quality for a long mechanical and electrical service life, ensuring maximum plant uptime.
2. Space-Saving Design (Size S00): Ultra-compact size for integration into distribution boards and control cabinets with limited space.
3. Coil Protection: The integrated suppressor diode eliminates the need for external wiring of surge absorbers, providing robust protection for the 24V DC coil.
4. Flexible Voltage Range: The wide operating range of the $24\text{ V DC}$ coil ensures reliable pickup and holding even under significant voltage fluctuations.
5. IEC/EN & UL/CSA Approved: Suitable for worldwide use, meeting major international standards for industrial control gear.

Function/Application

The Siemens 3RT2016-1SB42 power contactor is primarily used for switching motors and resistors in industrial automation, HVAC, pumping, and conveying systems. Its 3-pole design is perfect for three-phase motor control, and the auxiliary contact can be used for feedback or interlocking circuits in the control system. The $24\text{ V DC}$ coil makes it an excellent interface component for PLC (Programmable Logic Controller) and other low-voltage DC control outputs.