Overview
The Siemens 3RT1481-6AF36 power contactor is designed for heavy-duty industrial operations requiring robust switching of high current circuits. With an AC-1 rating of 900 A at 690 V and a temperature capacity of 40 °C, this 3-pole contactor ensures exceptional reliability. Equipped with conventional auxiliary contacts (2 NO + 2 NC) and screw terminals, it offers flexible control solutions for both main and auxiliary circuits. Ideal for industrial motor controls, power distribution, and automation systems.
Benefits and Features
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High Current Rating: Ideal for switching large non-inductive or slightly inductive loads with its 900 A (AC-1) capacity.
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Flexible Control: Operates reliably across a universal control voltage range (110-127V AC / 100-110V DC), ensuring compatibility with various control panels.
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Integrated Auxiliary Contacts: Features a conventional drive and 2 NO + 2 NC auxiliary contacts built-in for seamless integration into interlocking and control circuits.
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Robust Terminal Design: Offers secure and efficient connections with a busbar connection for the main circuit and screw terminals for the control and auxiliary circuits.
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Space-Saving and Reliable: Designed for long-term reliability and efficient use of panel space, characteristic of the Siemens SIRIUS line.
Functions & Features
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Main Circuit: Busbar connection for efficient power distribution.
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Control Voltage: Uc: 110-127 V AC (50-60 Hz) or 100-110 V DC.
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Auxiliary Contacts: 2 normally open (NO) + 2 normally closed (NC) for additional control functions.
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Temperature Rating: Operates efficiently at 40 °C ambient temperature.
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Reliable Switching: High endurance and consistent operation for heavy industrial use.
Application
The 3RT1481-6AF36 is the go-to solution for switching high-current, resistive loads such as:
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Heating elements and furnaces
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Power factor correction systems
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Isolation of main distribution lines
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High-capacity lighting and signaling systems
For more information on the Siemens 3RT1481-6AF36 or to explore our full range of industrial control products, visit turll today!













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