Siemens 3RT1355-6AF36 Contactor 4-Pole, 200A, AC-1, 48-130V AC/DC, Screw Terminal Original Brand New

Siemens 3RT1355-6AF36 Contactor: High-Performance 4-Pole Switching Solution

Overview

The Siemens 3RT1355-6AF36 is a robust and highly reliable 4-pole contactor designed for switching non-inductive or weakly inductive loads (AC-1) up to 200 Amperes at 400 Volts and 40°C. Part of the SIRIUS 3RT13 series, this S6 frame size contactor features a versatile 48-130 V AC/DC wide-range solid-state operating mechanism, offering flexible control options. With 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, along with convenient connection rail and screw terminals, it’s an ideal choice for a variety of industrial applications, including disconnecting loads, power generation plant integration, and transfer switching.

Built to Siemens’ stringent quality standards, the 3RT1355-6AF36 ensures long-term performance and electromagnetic compatibility in demanding environments. Its integrated coil damping (varistor) provides enhanced protection and reliability.

Key Benefit

• Versatile AC-1 Switching: Safely and efficiently handles 4-pole switching of non-inductive or weakly inductive loads, perfect for heating, lighting, and distribution applications.
• Wide-Range Control: The 48-130 V AC/DC solid-state operating mechanism offers exceptional flexibility and simplifies inventory management.
• High Current Capacity: Rated for 200 Amperes at 400 Volts, suitable for significant power loads.
• Integrated Protection: Equipped with an integrated varistor for coil damping, protecting against overvoltage surges and enhancing device longevity.
• Reliable Auxiliary Contacts: Features 2 NO + 2 NC auxiliary contacts for versatile control circuit integration, with high contact reliability even at low voltages/currents.
• Robust Connection Options: Offers both connection rail and screw terminals for secure and flexible wiring, accommodating cable lugs or busbars.
• Industrial Standard Compliance: Adheres to essential international standards like IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1, ensuring safety and compatibility.

Function & Features

• Main Circuit:
  • Designed for AC-1 applications (non-inductive or weakly inductive loads).
  • Rated current: 200 A at 400 V/40 °C.
  • 4-pole configuration.
  • Connection via screw terminals with connecting bars, suitable for cable lugs, flexible, or rigid busbars.
• Control Circuit:
  • Wide-range solid-state operating mechanism: 48-130 V AC/DC (50/60 Hz).
  • Integrated varistor for coil damping and overvoltage protection.
  • Operating range: 0.8 x Us min to 1.1 x Us max (DC control), 0.85 x Us min to 1.1 x Us max (AC control).
• Auxiliary Contacts:
  • Equipped with 2 NO + 2 NC auxiliary contacts as supplied, laterally mounted.
  • High contact reliability, suitable for solid-state circuits ($\ge 1\text{ mA}$ at $\ge 17\text{ V}$).
  • Expandable with additional auxiliary switches (permissible configuration must be observed).
• Electromagnetic Compatibility: Fulfills requirements for environment category A.
• Motor Protection Integration: Compatible with 3RB2 electronic overload relays for comprehensive motor protection.
• Durability & Serviceability:
  • Note: Operating mechanism and contacts are not replaceable for this 3RT13 model.
  • All connections require suitable short-circuit and overload protection.

Application Areas

The Siemens 3RT1355-6AF36 contactor is ideally suited for:

• Four-pole switching of weak or non-inductive loads (AC-1) in industrial and commercial settings.
• Disconnecting loads or power generation plants from the grid, providing a reliable isolation point.
• Transfer switching applications, enabling seamless transitions between power sources.
• General control and power distribution in automation systems.

Protection Guidelines

For optimal performance and safety, all connections (main, auxiliary, and control supply voltage) must be protected against overload and short circuits.

• Main Connections: Refer to the technical product data sheet for free-standing contactor protection. For device combinations (e.g., contactor with overload relay/circuit breaker), consult the Digital Configuration Manual for load feeders.
• Auxiliary Connections: Information on auxiliary contact protection is available in the technical product data sheet.
• Control Supply Voltage: Adhere to relevant standards for control panel configuration. Consider power supplies with current-limiting functions and suitable protection devices like miniature circuit breakers. The load characteristics of the contactor (inrush current peaks, switch-on/holding power) must be factored in.

Connection Methods

• Main Circuit: Screw terminals with connecting bars, compatible with cable lugs, flexible, or rigid busbars. Bus connectors can also be fitted (see accessories).
• Auxiliary and Control Circuit: Screw terminals for reliable connections.

Accessories and Related Product

• For overload protection, the Siemens 3RB2 electronic overload relays can be mounted directly onto the 3RT13 contactors.
• Refer to the “Accessories ordering data” or the overview graphic for mountable accessories for 3RT135 to 3RT137 contactors.
• Please note that the operating mechanism and contacts are not replaceable for this 3RT13 model.

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