Home › Manufacturers › Siemens › 3TF6844-0CM7

Siemens

Siemens 3TF6844-0CM7 630A Vacuum Contactor

Siemens 3TF6844-0CM7 Vacuum Contactor AC-3e/AC-3 630A

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3TF6844-0CM7

Rating AC-3e/AC-3

Current 630 A

Power 335 kW @ 400V

Voltage 690 V

Get a price for 3TF6844-0CM7

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Vacuum Interruption Technology 630A Rating 335kW Switching Capacity 4 NO + 4 NC Auxiliary Contacts 200-240V AC Coil Voltage Suitable for 690V Systems

Product description

The Siemens 3TF6844-0CM7 is a vacuum contactor rated for AC-3e/AC-3 duty at 630 Amps and 335 kW at 400V. It operates at a rated voltage of 690V and is a 3-pole device. The coil voltage is 200-240V AC (50/60 Hz), and it features conventional auxiliary contacts: 4 normally open (NO) and 4 normally closed (NC).

This vacuum contactor is ideal for switching high-power AC motors and inductive loads, particularly in applications where frequent switching or demanding conditions require the reliability of vacuum interruption technology. Common industries include power distribution, heavy manufacturing, and mining.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3TF6844-0CM7. We ensure that our customers receive high-quality, tested automation components to minimize downtime and optimize performance.

Technical specifications

Rating	AC-3e/AC-3
Current	630 A
Power	335 kW @ 400V
Voltage	690 V
Poles	3
Coil Voltage	200-240V AC
Aux Contacts	4 NO + 4 NC
Circuit Type	Main circuit busbar, control/aux circuit screw terminal
Manufacturer	Siemens

Common applications

Motor Control

Power Distribution

Heavy Industry

Mining Operations

Switchgear

Industrial Automation

Compatible systems

Industrial control panels Motor control centers Power distribution switchboards

Also known as

Siemens 3TF6844 Vacuum Contactor 630A Siemens AC-3e Contactor

Replaces / compatible with

This vacuum contactor is designed for high-power switching applications and can replace older air break contactors or other high-capacity switching devices where vacuum technology is preferred for reliability and lifespan.

Technical note

Expert tip

Ensure proper ventilation around the vacuum interrupters to maintain optimal operating temperatures and prevent premature failure.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the coil voltage for the Siemens 3TF6844-0CM7 vacuum contactor?

The Siemens 3TF6844-0CM7 vacuum contactor has a coil voltage of 200-240V AC, operating on 50/60 Hz frequencies. This allows it to be controlled by standard AC control circuits.