Overview
The Siemens SIRIUS 3RT2326-1AP60 is a high-performance 4-pole contactor designed for switching non-inductive or weakly inductive loads (AC-1) up to 40A at 400V / 40°C. This robust and reliable device features a 220V AC (50Hz) / 240V AC (60Hz) control supply voltage, making it versatile for various industrial applications. Equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, along with secure screw terminals, the 3RT2326-1AP60 offers flexible integration into control circuits. Its compact S0 size ensures efficient use of panel space. Part of the trusted Siemens SIRIUS modular system, this contactor adheres to stringent international standards like IEC 60947, ensuring safety and dependable operation.
Key Features & Function
- 4-Pole AC-1 Operation: Specifically designed for switching resistive or slightly inductive loads, ideal for heating, lighting, or distribution applications.
- High Current Rating: Handles up to 40 Amperes (AC-1) at 400V / 40°C, providing ample capacity for demanding loads.
- Versatile Coil Voltage: Operates with 220V AC (50Hz) or 240V AC (60Hz) control supply voltage for broad compatibility.
- Integrated Auxiliary Contacts: Features 1 NO (Normally Open) and 1 NC (Normally Closed) auxiliary contact for feedback, interlocking, and control circuit integration.
- Secure Screw Terminals: Ensures reliable and robust electrical connections for both main and auxiliary circuits.
- Compact S0 Size: Optimized dimensions for space-saving installation in control panels and enclosures.
- Standards Compliance: Manufactured in accordance with IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches), guaranteeing international quality and safety.
- Expandable Design: Can be expanded with additional auxiliary switches and integrated into motor protection schemes using Siemens 3RU2 thermal or 3RB3 electronic overload relays.
- Electromagnetic Compatibility (EMC): Fulfills requirements for environment category A, ensuring reliable operation in industrial settings.
- High Contact Reliability: Auxiliary contacts are suitable for switching low voltages (≤ 110V) and low currents (≤ 100mA), ideal for solid-state circuits.
- Overvoltage Protection: Can be retrofitted with surge suppressors (RC elements, varistors, diodes) for enhanced coil protection.
Benefit
- Reliable Performance: Siemens’ renowned engineering ensures long-term operational stability and safety for your electrical systems.
- Cost-Effective Solution: Durable design and expandability reduce maintenance and replacement costs.
- Easy Integration: Standardized design and screw terminals facilitate quick and straightforward installation and wiring.
- Space Saving: The compact S0 size helps optimize panel layout and reduce overall system footprint.
- Enhanced Safety: Built-in protection guidelines for short-circuit, overload, and overvoltage ensure the safety of equipment and personnel.
- Versatile Application: Ideal for a wide range of non-motor applications, including heating, lighting, power distribution, and transfer switching.
- Future-Proof: Part of the modular SIRIUS system, allowing for easy upgrades and integration with other Siemens control devices.
Application
The Siemens SIRIUS 3RT2326-1AP60 contactor is ideally suited for:
- Four-pole switching of resistive and weakly inductive loads (AC-1)
- Controlling heating elements, lighting systems, and distribution circuits
- Disconnecting loads or power generation plants from the grid
- Transfer switching applications
- Integration into control panels for various industrial machinery and processes
Standards & Protection:
- Standards: IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1 (auxiliary switches)
- Short-circuit and Overload Protection: Main, auxiliary, and control supply voltage connections require appropriate external protection measures (e.g., fuses, circuit breakers). Refer to technical product data sheets and configuration manuals for detailed guidance.
- Overvoltage Protection: Retrofittable with external surge suppressors for coil protection.
Connection Methods:
- Main Circuit: Screw terminals
- Auxiliary and Control Circuit: Screw terminals
Motor Protection: While primarily for AC-1 loads, for applications requiring motor protection with 3RT23 contactors, Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays can be directly mounted.













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