Siemens 3RT2336-1AM20 Contactor 4-Pole AC-1, 60A, 208V AC, Size S2 with Aux Contact Original Brand New

Siemens 3RT2336-1AM20 Contactor: Robust 4-Pole AC-1 Switching for Industrial Application

The Siemens 3RT2336-1AM20 is a high-performance 4-pole AC-1 contactor, engineered for reliable switching of non-inductive or weakly inductive loads up to 60 Amps at 400V / 40 °C. Featuring a 208V AC (50/60 Hz) operating mechanism and integrated 1 NO + 1 NC auxiliary contacts, this Size S2 contactor with screw terminals is a versatile solution for diverse industrial control and power distribution needs.

Overview

Part of the renowned Siemens SIRIUS 3RT2 contactor series, the 3RT2336-1AM20 is designed to meet stringent international standards, including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches). Its robust construction and comprehensive protection features ensure safe and efficient operation in demanding environments. This contactor is an excellent choice for applications requiring four-pole switching of resistive loads, disconnecting loads or power generation plants from the grid, and transfer switching.

Key Features & Benefit

• High Current Capacity: Rated for 60 Amps (AC-1) at 400V / 40 °C, making it suitable for significant non-inductive loads.
• Versatile 4-Pole Design: Ideal for multi-phase applications, offering enhanced control and load management.
• Integrated Auxiliary Contacts: Comes with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts, providing immediate feedback and enabling complex control circuits.
• Reliable AC Operation: Features a 208V AC, 50/60 Hz operating mechanism for standard industrial power supplies.
• Secure Screw Terminals: Ensures robust and dependable electrical connections for both main and auxiliary circuits.
• Compact Size S2: Optimized for space-saving integration within control panels and electrical enclosures.
• Compliance with Standards: Manufactured to adhere to global safety and performance standards (IEC 60947 series).
• Enhanced Contact Reliability: Auxiliary contacts are optimized for low-voltage/low-current switching, suitable for solid-state circuits.

Function

• Four-pole Switching: Efficiently controls weak or non-inductive loads (AC-1 category).
• Load Disconnection: Facilitates safe disconnection of loads or power generation plants from the electrical grid.
• Transfer Switching: Enables seamless switching between different power sources or load paths.
• Control Circuit Integration: Auxiliary contacts allow for interlocking, signaling, and sequence control in automation systems.

Protection & Safety:

• Short-Circuit and Overload Protection: All connections (main, auxiliary, control supply) require appropriate protection measures. Refer to the technical product data sheet and configuration manuals for detailed guidance on device combinations (e.g., with overload relays or circuit breakers) and suitable protection devices.
• Overvoltage Protection: The 3RT23 contactors can be retrofitted with surge suppressors (RC elements, varistors, diodes) for damping opening surges in the coil, enhancing longevity and reliability. Note that damping may increase contactor break and delay times.
• Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A. Specific configuration notes in the Equipment Manual must be observed when used with frequency converters.

Connection Methods:

• Main Circuit: Screw terminals with box terminal design. Direct connection with cable lugs is possible when the box terminal is removed.
• Auxiliary and Control Circuit: Secure screw terminals.

Compatibility & Accessories:

• Motor Protection: Compatible with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for robust motor protection against overload.
• Operating Mechanisms: Features a conventional AC operating mechanism.
• Auxiliary Contact Expansion: Basic units are supplied with integrated auxiliary contacts and can be expanded further with additional auxiliary switches (refer to accessory details for permissible configurations).
• Serviceability: Solenoid coil replacement is possible. Contacts can also be replaced for 3RT233 contactors.
• Accessories & Spare Parts: A wide range of accessories and spare parts are available for the SIRIUS 3RT2 contactor series to enhance functionality and maintenance. (See “Accessories and spare parts for SIRIUS 3RT2 contactors” for details).

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