Siemens SIRIUS 3RT2336-1NP30 Contactor, AC-1, 60A, 400V, 4-Pole, 175-280V AC/DC, Integrated Varistor, Screw Terminal, Size S2 Original Brand New

Siemens SIRIUS 3RT2336-1NP30 Contactor – Robust & Reliable Switching for AC-1 Loads

The Siemens SIRIUS 3RT2336-1NP30 Contactor is a robust and highly reliable component engineered for the efficient switching of resistive loads (AC-1) across a diverse range of industrial and commercial applications. As a cornerstone of Siemens’ acclaimed SIRIUS modular system, this contactor delivers exceptional performance within a compact Size S2 frame, ensuring high contact reliability and seamless integration into your control panels.

Key Features & Benefit

• High Performance AC-1 Switching: Rated for 60A at 400V / 40°C, specifically designed for reliable switching of non-inductive or weakly inductive loads.
• Universal Control Voltage: Features a wide-range solid-state operating mechanism accepting 175-280V AC/DC (50/60 Hz), providing flexible control options.
• Integrated Varistor: Equipped with an integrated varistor for effective damping of opening surges in the coil, enhancing component longevity and system stability.
• 4-Pole Configuration: Provides four main poles for comprehensive circuit control.
• Convenient Auxiliary Contacts: Includes 1 NO (normally open) + 1 NC (normally closed) integrated auxiliary contacts for signaling and control circuit integration.
• Secure Screw Terminals: Utilizes robust screw terminals for secure and reliable electrical connections.
• Compact Size S2: Optimized for space-saving installation within control cabinets.
• Part of the SIRIUS Modular System: Ensures easy compatibility and expansion with other Siemens SIRIUS components.
• High Contact Reliability: Guarantees dependable operation, particularly for low-voltage and low-current applications (up to 110V / 100mA).

Compliance & Protection

This contactor adheres to international standards including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 (for auxiliary switches). Proper protection of connections against short circuits, overload, and overvoltage is crucial for safe operation. Refer to relevant standards (e.g., for cable dimensioning) and consider suitable power supplies with current-limiting functions, miniature circuit breakers, or equipment circuit breakers for control circuits. Overvoltage protection for the control supply voltage connection is provided by the integrated varistor, or can be retrofitted with accessory RC elements, varistors, diodes, or diode assemblies for other 3RT23 contactors (if not already equipped).

Connection Methods:

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

Electromagnetic Compatibility:

The 3RT2336-1NP30 fulfills the requirements for environment category A.

Motor Protection:

For overload protection of motor-driven loads (AC-3), 3RU2 thermal overload relays or 3RB3 electronic overload relays can be directly mounted onto 3RT23 contactors.

Operating Mechanism:

This contactor features a wide-range solid-state operating mechanism, allowing for universal AC or DC operation. Control is via the A1-A2 control supply voltage connection.

Maintenance & Expansion:

The solenoid coil for the 3RT2336-1NP30 can be replaced. For 3RT233 contactors, only the contacts can be replaced.

The basic unit includes two integrated auxiliary contacts (1 NO + 1 NC) and can be further expanded using additional auxiliary switches (permissible configurations must be observed).

Application

The Siemens 3RT2336-1NP30 contactor is ideally suited for:

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

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