Siemens SIRIUS 3RT2336-1AK60 Contactor, 4-Pole AC-1, 60A, 110V AC Coil, S2 Size Original Brand New

Siemens SIRIUS 3RT2336-1AK60 4-Pole Contactor for AC-1 Application

The Siemens SIRIUS 3RT2336-1AK60 is a high-performance 4-pole contactor designed for switching AC-1 category loads. With a robust 60 A rating at 400 V and 40 °C, this S2 size contactor is ideal for applications involving resistive, non-inductive, or slightly inductive loads. Its 110 V AC (50 Hz) / 120 V AC (60 Hz) coil ensures reliable operation, while the integrated 1 NO + 1 NC auxiliary contacts provide essential feedback and control options. Featuring convenient screw terminals, the 3RT2336-1AK60 offers secure and straightforward installation.

Overview and Application

The Siemens 3RT2336-1AK60 contactor is a versatile component for various industrial and commercial applications. It excels in:

• Four-pole switching of weak or non-inductive loads (AC-1)
• Disconnecting loads or power generation plants from the grid
• Transfer switching

While this specific model is optimized for AC-1 applications, Siemens also offers special versions of the 3RT23 contactors for switching motor-driven loads (AC-3).

Protection and Reliability:

Siemens contactors are engineered for reliable performance and safety. All connections must be appropriately protected against overload and short circuits. For detailed information on protecting main connections (free-standing contactor, or in combination with overload relays/circuit breakers), auxiliary connections, and control supply voltage connections, refer to the technical product data sheet and relevant configuration manuals.

Protection against overvoltage at the control supply voltage connection is possible by retrofitting 3RT23 contactors with surge suppressors like RC elements, varistors, or diodes (available separately as accessories). Note that damping can influence the contactor’s break times and the opening/closing delay times of auxiliary contacts.

Connection Methods:

• Main Circuit: The 3RT233 contactors, including the 3RT2336-1AK60, utilize robust screw terminals with a box terminal design.
• Auxiliary and Control Circuit: Screw terminals ensure secure connections for auxiliary and control circuits.

Electromagnetic Compatibility (EMC):

These contactors meet the requirements for environment category A, ensuring reliable operation in typical industrial settings. When used with frequency converters, specific configuration notes in the Equipment Manual must be observed.

Contact Reliability of Auxiliary Contacts:

For switching low voltages ($\le$ 110 V) and low currents ($\le$ 100 mA), the auxiliary contacts of 3RT23 contactors are highly reliable. They are particularly suitable for solid-state circuits with currents $\ge$ 1 mA at voltages of 17 V and higher.

Motor Protection Integration:

For comprehensive motor protection, 3RU2 thermal overload relays or 3RB3 electronic overload relays can be easily mounted directly onto the 3RT23 contactors, creating a compact and efficient motor feeder solution.

Operating Mechanism:

The 3RT23 contactors, including this model, are available with conventional AC or DC operating mechanisms, or with a wide-range solid-state operating mechanism that accepts universal AC or DC actuating voltage. Control is via the A1-A2 control supply voltage connection (refer to the technical data sheet for operating ranges).

Maintenance and Expandability:

The solenoid coil of the 3RT2336-1AK60 can be replaced. Additionally, the basic unit comes with two integrated auxiliary contacts (1 NO + 1 NC) and can be further expanded with additional auxiliary switches, adhering to permissible configurations.

Accessories and Spare Parts:

A wide range of accessories and spare parts are available for 3RT23 contactors to meet various application requirements. Please refer to the SIRIUS 3RT2 contactors accessories catalog for details.

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