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Siemens 3TK5222-0AL2 AC-1 Contactor - Size 8, 315A

Siemens Size 8, 3-pole, 315A AC-1 Contactor with 2NO/2NC auxiliary contacts.

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ManufacturerSiemens

Part number3TK5222-0AL2

Type Contactor

AC Rating AC-1

Size 8

Poles 3-pole

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315A AC-1 rating Size 8 power 207kW switching capacity 2 NO + 2 NC auxiliary contacts 230V AC coil operation Robust industrial design

Product description

The Siemens 3TK5222-0AL2 is a Size 8, 3-pole AC-1 contactor rated for 315 Amps and 207 kW at 400/380V. It features 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts for control and signaling. This AC-operated contactor has a coil voltage of 230V AC at 50/60 Hz.

This heavy-duty contactor is designed for switching non-inductive or slightly inductive loads, such as resistive heating circuits, lighting, or motor feeders where direct-on-line starting is employed. It is suitable for industrial applications in manufacturing plants, power distribution, and control systems requiring robust switching capabilities.

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Technical specifications

Type	Contactor
AC Rating	AC-1
Size	8
Poles	3-pole
Current Rating	315A (AC-1)
Power Rating	207kW (at 400/380V)
Auxiliary Contacts	2 NO + 2 NC
Coil Voltage	230V AC
Frequency	50/60 Hz

Common applications

Motor starting (DOL)

Resistive heating circuits

Lighting control

Industrial power distribution

Control panels

Heavy-duty switching

Compatible systems

Siemens control circuits 230V AC control voltage Industrial power distribution panels

Also known as

Siemens 315A Contactor 3TK5 Contactor Size 8 Siemens AC-1 Contactor 3TK5222

Replaces / compatible with

Direct replacement for Siemens 3TK5 series contactors of the same rating. Compatible with various Siemens control accessories.

Technical note

Expert tip

For motor applications, ensure this contactor is appropriately sized for the motor's starting current and duty cycle, or select a contactor with a suitable AC-3 rating.

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Frequently asked questions

What type of load is the Siemens 3TK5222-0AL2 contactor primarily designed for?

The Siemens 3TK5222-0AL2 is an AC-1 rated contactor, meaning it is designed for switching non-inductive or slightly inductive loads, such as resistive heating elements or general power distribution, rather than motor loads which typically require AC-3 ratings.