3RT1466-6AF36

What type of component is this?

This is a 3-pole power contactor designed for switching high-current loads in general automation and industrial power circuits. It is suited to applications where dependable switching of substantial AC loads is required.

What kinds of applications is it typically used in?

It is commonly used in larger motor and power switching duties, including control panels, distribution assemblies, industrial machinery, HVAC equipment and other heavy-duty automation systems where a high-capacity contactor is needed.

How many main poles does it have?

It has 3 main poles with 3 normally open main contacts, making it suitable for three-phase switching applications.

What is the rated current of the main circuit?

This unit is rated at 400 A in AC-1 duty up to 690 V at 40 °C ambient temperature. For AC-3 duty, the rated current is 138 A at 400 V, which is useful when considering motor-related switching duties.

What coil voltage does it require?

The control supply voltage is 110 to 127 V AC at 50/60 Hz or 110 to 127 V DC. That gives flexibility where either AC or DC control circuits are used.

Can it be used with both AC and DC control circuits?

Yes. The coil is designed for AC/DC operation across the 110 to 127 V range, so it can be integrated into either type of control scheme where the specified voltage is available.

Are auxiliary contacts included?

Yes. The contactor includes 2 normally open and 2 normally closed auxiliary contacts as standard, which can be useful for interlocking, signalling and control logic.

Does it have built-in surge suppression?

Yes. This version includes a varistor as the surge suppressor, helping to manage switching transients on the control side.

What connection style does it use?

The main current circuit uses bar or busbar-style connections, while the auxiliary and control circuits use screw-type terminals. This arrangement suits high-current installations with conventional panel wiring practices.

What conductor sizes can be connected?

For the main contacts, the connectable conductor cross-section is 70 to 240 mm², with AWG compatibility from 2/0 to 500 kcmil. For the auxiliary contacts, the typical range is 0.5 to 4 mm², depending on conductor type.

What are the physical dimensions?

The contactor is approximately 210 mm high, 145 mm wide and 202 mm deep. Its listed weight is 6.3 kg, so panel layout and mounting strength should be considered during design.

Can it be mounted side by side with other devices?

Yes. Side-by-side mounting is supported. Clearance requirements still need to be observed, including forward, upward, downward and side spacing depending on surrounding grounded or live parts.

What is the enclosure protection rating?

The front is rated IP00 as standard, with IP20 on the front when used with a cover or box terminal arrangement. The terminals themselves are rated IP00.

What ambient conditions is it designed for?

It is intended for operation in ambient temperatures from -25 °C to +60 °C, with storage down to -55 °C and up to +80 °C. The maximum installation altitude is 2,000 m above sea level.

How durable is it in mechanical operation?

The typical mechanical service life is up to 10,000,000 operating cycles, which makes it a strong option for demanding industrial switching applications.

Does this contactor provide short-circuit protection by itself?

No. The contactor itself does not provide short-circuit protection, so suitable upstream protective devices must be selected as part of the overall panel design.

What mounting method does it use?

It is designed for screw fixing on a vertical mounting surface. The specified mounting arrangement also allows for some rotational and tilt tolerance during installation.

Is this a suitable option for high-power panel builds?

Yes. With its S10 frame size, 400 A AC-1 rating, busbar main connections and built-in auxiliary contacts, the 3RT1466-6AF36 is well suited to substantial panel-based switching duties where a robust conventional contactor is required.