Siemens SIRIUS 3RT2336-1AH20 Contactor AC-1, 60A, 4-Pole, 48V AC, S2 Size Original Brand New

Siemens SIRIUS 3RT2336-1AH20 AC-1 Contactor – Robust Switching for Non-Inductive Load

The Siemens SIRIUS 3RT2336-1AH20 is a high-performance 4-pole contactor specifically designed for AC-1 applications, ensuring reliable switching of weak or non-inductive loads. With a current rating of 60 A at 400 V / 40 °C, this Size S2 contactor is an ideal solution for a wide range of industrial power control scenarios, including disconnecting loads from the grid, transfer switching, and general non-inductive load management.

Key Features & Specification

• Product Number: 3RT2336-1AH20
• Contactor Type: AC-1 (for non-inductive or slightly inductive loads)
• Current Rating: 60 A (at 400 V / 40 °C)
• Poles: 4-pole
• Control Supply Voltage: 48 V AC, 50/60 Hz
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC) integrated
• Terminal Type: Screw terminal for secure and straightforward wiring
• Size: S2 – Compact and robust design for various panel installation.

Overview & Standards Compliance:

Built to meet stringent international standards, the Siemens 3RT2336-1AH20 adheres to IEC 60947‑1, IEC 60947‑4‑1, and IEC 60947‑5‑1 (for auxiliary switches), guaranteeing high quality, safety, and performance in demanding industrial environments.

Comprehensive Protection Features:

This contactor is designed with protection in mind, emphasizing the safeguarding of all connections against short circuit, overload, and overvoltage:

• Main Circuit Protection: For detailed guidance on protecting standalone contactors or combinations with overload relays and circuit breakers (motor feeders), refer to Siemens’ technical product data sheets and digital/configuration manuals for load feeders.
• Auxiliary & Control Circuit Protection: Information on auxiliary contact protection is available in the technical product data sheet. For control supply voltage connections, relevant standards for control panel configuration and components (e.g., cable dimensioning) must be considered. Options like suitable current-limiting power supplies or miniature circuit breakers can be utilized for protection.
• Overvoltage Protection: 3RT23 contactors can be retrofitted with surge suppressors such as RC elements, varistors, or diode assemblies (available as accessories) to dampen opening surges in the coil, protecting against voltage spikes.

Flexible Connection Methods:

The 3RT2336-1AH20 (a 3RT233 contactor) features robust screw terminals with a box terminal for main circuit connections. Direct connection with cable lugs is possible by removing the box terminal. Auxiliary and control circuits utilize convenient screw terminals.

Electromagnetic Compatibility (EMC):

This contactor fulfills the requirements for environment category A, ensuring reliable operation in industrial settings. When used with frequency converters, specific configuration notes from the Equipment Manual should be observed for optimal performance.

High Contact Reliability:

The integrated auxiliary contacts of the 3RT2336-1AH20 ensure a high level of contact reliability, especially suitable for switching low voltages (≤ 110 V) and low currents (≤ 100 mA), making them ideal for solid-state circuits with currents ≥ 1 mA at 17 V and higher.

Motor Protection Compatibility:

For comprehensive motor protection, the 3RT2336-1AH20 can be seamlessly combined with Siemens 3RU2 thermal overload relays or 3RB3 electronic overload relays.

Advanced Operating Mechanism:

Equipped with a conventional AC operating mechanism, the control is straightforward via the A1 – A2 control supply voltage connection.

Maintainability & Expandability:

The 3RT2336-1AH20 allows for solenoid coil replacement, extending its operational lifespan. The basic unit includes two integrated auxiliary contacts (1 NO + 1 NC) and can be further expanded with additional auxiliary switches for increased functionality (adhering to permissible configurations).

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