Siemens 3RT2337-1AP60 Contactor 4-Pole, 110A AC-1, 220/240V AC Coil, S2 Size Original Brand New

Overview

The Siemens 3RT2337-1AP60 is a high-performance 4-pole power contactor designed for reliable switching of non-inductive or weakly inductive loads (AC-1) up to 110 Amperes at 400V and 40°C. Part of the SIRIUS 3RT23 series, this robust S2 size contactor features a versatile 220 V AC (50 Hz) / 240 V AC (60 Hz) operating coil and comes equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, making it suitable for a wide range of industrial control applications. Its user-friendly screw terminals ensure secure and straightforward wiring.

Key Benefit

• High Current Capacity: Handles up to 110 Amperes (AC-1) for demanding non-inductive load switching.
• Versatile Coil Voltage: Operates efficiently with both 220 V AC (50 Hz) and 240 V AC (60 Hz) control supply voltages.
• Integrated Auxiliary Contacts: Includes 1 NO + 1 NC auxiliary contacts for seamless integration into control circuits, offering feedback and interlocking possibilities.
• Robust & Reliable: Built to Siemens’ stringent quality standards, ensuring long-term performance and durability in industrial environments.
• Easy Installation: Features convenient screw terminals for quick and secure wiring.
• Compact S2 Size: Optimized for space-saving integration within control panels.
• Safety & Compliance: Conforms to international standards like IEC 60947, ensuring safe and compliant operation.

Function & Features

The Siemens 3RT2337-1AP60 contactor excels in various applications, primarily focusing on 4-pole switching of AC-1 loads.

• AC-1 Load Switching: Specifically designed for switching non-inductive or weakly inductive loads such as resistive heaters, lighting circuits, or isolation applications.
• Disconnecting Loads/Power Generation Plants: Ideal for isolating equipment or power generation units from the electrical grid.
• Transfer Switching: Can be utilized in transfer switching applications for power distribution.
• Integrated Auxiliary Contacts: The built-in 1 NO and 1 NC auxiliary contacts allow for critical feedback to control systems, enabling status indication, interlocking functions, and sequence control.
• Screw Terminal Connections: Provides secure and reliable electrical connections for both main and auxiliary circuits.
• Standards Compliance: Adheres to key international standards including IEC 60947-1 (General Rules), IEC 60947-4-1 (Contactors and Motor-Starters), and IEC 60947-5-1 (Control Circuit Devices and Switching Elements).
• Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A, ensuring reliable operation in industrial settings.
• Coil Damping (Optional): Can be retrofitted with surge suppressors (RC elements, varistors, diodes) to dampen opening surges in the coil, protecting sensitive control components (ordered separately).
• Contact Reliability: Auxiliary contacts are designed for high contact reliability, even at low voltages (≤ 110 V) and currents (≤ 100 mA), making them suitable for solid-state circuits.
• Overload Protection (with Accessories): Compatible with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for comprehensive motor and circuit protection (ordered separately).
• Replaceable Solenoid Coil: The solenoid coil for this 3RT233 contactor can be replaced, extending the product’s lifespan and simplifying maintenance.

Protection & Safety Guidelines

For optimal performance and safety, it is crucial to implement appropriate protection measures for all connections of the Siemens 3RT2337-1AP60 contactor.

• Short-Circuit and Overload Protection (Main Connections): Refer to the technical product data sheet for information on protecting a free-standing contactor. For device combinations (contactor with overload relay or circuit breaker as motor feeder), consult the Digital Configuration Manual for load feeders or the Configuration Manual for load feeders.
• Short-Circuit and Overload Protection (Auxiliary Connections): Specific protection information for auxiliary contacts is available in the technical product data sheet.
• Short-Circuit and Overload Protection (Control Supply Voltage): Adhere to relevant standards and regulations for control panel configuration and cable dimensioning. Consider power supplies with current-limiting functions and select suitable protection devices based on contactor load characteristics (inrush current, switch-on power, holding power). For further recommendations, consult the “Control panel tip – Selecting and dimensioning suitable power supplies quickly and reliably” guide.
• Overvoltage Protection (Control Supply Voltage): The 3RT23 contactors can be retrofitted with surge suppressors (RC elements, varistors, diodes, or diode assemblies) to dampen opening surges in the coil. These accessories must be ordered separately. Note that damping may increase break times and delay times of contacts.

Connection Methods

• Main Circuit: Screw terminals with a box terminal. Direct connection to the connecting bar with cable lugs is possible when the box terminal is removed.
• Auxiliary and Control Circuit: Screw terminals.

Accessories & Spare Parts

Expand the functionality and extend the lifespan of your Siemens 3RT2337-1AP60 contactor with compatible accessories and spare parts.

• Surge Suppressors: For coil damping (RC elements, varistors, diodes).
• Auxiliary Switches: Additional auxiliary switches can be mounted to expand control possibilities (observe permissible configurations).
• Overload Relays: Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays for motor protection.
• Replacement Solenoid Coils: Available for maintenance and repair.

For a complete list of compatible accessories and ordering data, please refer to the “Accessories and spare parts for SIRIUS 3RT2 contactors and SIRIUS 3RH2 contactor relays” documentation.

For more high-quality industrial automation products, visit Turll today!