Siemens SIRIUS 3RT1355-6AP36 4-Pole Contactor, AC-1, 200A, 100-250V AC/DC Original Brand New

Siemens SIRIUS 3RT1355-6AP36 4-Pole Contactor – High Performance for AC-1 Application

The Siemens SIRIUS 3RT1355-6AP36 is a robust and reliable 4-pole contactor designed for demanding AC-1 applications, offering exceptional performance in switching weak or non-inductive loads. With a current rating of 200 A at 400 V and 40 °C, this S6 frame size contactor is an ideal solution for disconnecting loads, managing power generation plants from the grid, and transfer switching.

Key Features & Benefit

• Powerful Performance: Rated for 200 A at 400 V (AC-1, 40 °C), suitable for heavy-duty non-inductive loads.
• Versatile Control Voltage: Features a wide-range solid-state operating mechanism accepting 100-250 V AC/DC, ensuring flexible integration into various control systems.
• Comprehensive Auxiliary Contacts: Equipped with 2 NO (Normally Open) and 2 NC (Normally Closed) auxiliary contacts, providing versatile control and feedback options.
• Reliable Connections: Utilizes connection rail/screw terminals for secure and robust wiring of main, auxiliary, and control circuits.
• Integrated Overvoltage Protection: The 3RT13 series contactors come pre-equipped with a varistor for coil damping, protecting against opening surges and enhancing longevity.
• IEC Compliant: Adheres to international standards including IEC 60947‑1, IEC 60947‑4‑1, and IEC 60947‑5‑1 (auxiliary switches), ensuring safety and compatibility.
• Durable Construction: Built for industrial environments, fulfilling requirements for environment category A electromagnetic compatibility.
• High Contact Reliability: Auxiliary contacts are designed for high reliability, even with low voltages (≤ 110 V) and currents (≤ 100 mA), making them suitable for solid-state circuit.

Overview

The Siemens 3RT1355-6AP36 contactor is a crucial component for efficient and safe control of electrical systems. Its design prioritizes robust performance and ease of integration.

Standard:

• IEC 60947‑1
• IEC 60947‑4‑1
• IEC 60947‑5‑1 (auxiliary switches)

Protection & Safety:

Ensuring the longevity and safe operation of the contactor, all connections must be protected against overload and short circuits.

• Main Connections: Refer to the technical product data sheet for specific short-circuit and overload protection details for free-standing contactors. For combinations with overload relays or circuit breakers, consult the Digital or standard Configuration Manuals for load feeders.
• Auxiliary Connections: Information on auxiliary contact protection is available in the technical product data sheet.
• Control Supply Voltage Connections: Protection considers relevant standards for control panel configuration, cable dimensioning, and the selection of suitable power supplies with current-limiting functions. Load characteristics (inrush current peaks, switch-on power, holding power) must be factored in. Additional recommendations for miniature or circuit breakers are available in the “Control panel tip – Selecting and dimensioning suitable power supplies quickly and reliably.”
• Overvoltage Protection: The 3RT13 contactors feature integrated coil damping (varistor) for protection against opening surges. Note that damping may increase break and delay times; refer to the Equipment Manual for details on damping influence.

Connection Methods:

• Main Circuit: Screw terminal with connecting bars accommodate cable lugs or flexible/rigid busbar.
• Auxiliary and Control Circuit: Reliable screw terminals for secure wiring.

Electromagnetic Compatibility (EMC):

The contactor meets the requirements for environment category A. When used with frequency converters, refer to the Equipment Manual for configuration notes.

Contact Reliability of Auxiliary Contacts:

For reliable switching of low voltages and currents (≤ 110 V, ≤ 100 mA), the integrated auxiliary contacts ensure high contact reliability, particularly suitable for solid-state circuits with currents $\ge$ 1 mA at $\ge$ 17 V.

Motor Protection:

For overload protection, the Siemens 3RT13 contactors can be combined with 3RB2 electronic overload relay.

Operating Mechanism:

The 3RT1355-6AP36 features a sophisticated wide-range solid-state operating mechanism, controllable with both 50/60 Hz AC and DC.

• DC control operating range: 0.8 x Us min to 1.1 x Us max
• AC control operating range: 0.85 x Us min to 1.1 x Us max

Maintenance & Expansion:

• Solenoid Coils/Operating Mechanisms/Contacts: It is not possible to change the operating mechanism or contacts for 3RT13 contactor.
• Auxiliary Contacts: This contactor is supplied with two laterally mounted auxiliary switches. The basic unit can be further expanded with additional auxiliary switches, adhering to permissible configuration.

Accessories and Spare Part

For compatible accessories and spare parts, refer to the overview graphic and “Accessories ordering data” for 3RT135 to 3RT137 contactor.

Application

The Siemens 3RT1355-6AP36 contactor is perfectly suited for:

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

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