Login

We are experiencing technical difficulties. Your form submission has not been successful. Please accept our apologies and try again later. Details: [details]

Download

Register

We are experiencing technical difficulties. Your form submission has not been successful. Please accept our apologies and try again later. Details: [details]

Download

Thank you for registering

An email to complete your account has been sent to

Return to the website

get direct access

Fill in your details below and get direct access to content on this page

Text error notification

Text error notification

Checkbox error notification

Checkbox error notification

We are experiencing technical difficulties. Your form submission has not been successful. Please accept our apologies and try again later. Details: [details]

Download

Thank you for your interest

You now have access to K8AK-PW

A confirmation email has been sent to

Continue to page

Please or get direct access to download this document

K8AK-PW

K8AK-PW

3-phase voltage relay

Monitors overvoltages and undervoltages for 3-phase 3-wire or 4-wire power supplies, in one unit. Switch setting for 3-phase 3-wire or 3-phase 4-wire power supply.

  • Overvoltages or undervoltages: Operation time setting from 0.1 to 30 s
  • Relay warning status can easily be monitored using the LED indicator
  • Separate outputs possible for overvoltages and undervoltages
  • Reset method: Automatic
  • Power ON lock: 1 s or 5 s

Specifications & ordering info

Ordering information

Rated input

Order code

3-phase 3-wire mode

200, 220, 230, 240 VAC

K8AK-PW1

3-phase 4-wire mode

115, 127, 133, 138 VAC

3-phase 3-wire mode

380, 400, 415, 480 VAC

K8AK-PW2

3-phase 4-wire mode

220, 230, 240, 277 VAC

Specifications

Ambient operating temperature

-20 to 60°C (with no condensation or icing)

Storage temperature

-25 to 65°C (with no condensation or icing)

Altitude

2,000 m max.

Voltage fluctuation rang

85% to 110% of rated input voltage

Input frequency

50/60 Hz (AC power supply)

Output relays
(2 × SPDT, normally closed operation)

Resistive load

5 A at 250 VAC or at 30 VDC

Maximum contact voltage

250 VAC or 30 VDC

Maximum contact current

5 A

Maximum switching capacity

1,250 VA, 150 W

Mechanical life

10,000,000 operations

Electrical life

50,000 operations at 5 A, 250 VAC or 30 VDC

Degree of protection

Terminal section: IP20

Case material

PC and ABS

Weight

Approx. 150 g

Rated input voltage

K8AK-PW1

3-phase, 3-wire mode: 200, 220, 230, 240 VAC, 3-phase, 4-wire mode: 115, 127, 133, 138 VAC

K8AK-PW2

3-phase, 3-wire mode: 380, 400, 415, 480 VAC, 3-phase, 4-wire mode: 220, 230, 240, 277 VAC

Operation (overvoltage and undervoltage)

Operating value setting range

Overvoltage = -30% to 25% of maximum rated input voltage1
Undervoltage = -30% to 25% of maximum rated input voltage1

Operating value

100% operation at set value

Reset (HYS.)

Hysteresis

5% of operating value (fixed)

Resetting method

Automatic reset

Operating time (T)

Overvoltage/undervoltage

0.1 to 30 s

Power ON lock (LOCK)

1 s or 5 s (Changed with the DIP switch)

Overload capacity

Continuous input at 115% of maximum input, 10 s at 125% (up to 600 VAC)

Repeat accuracy

Operating value

±0.5% full scale (at 25°C and an ambient humidity of 65% at the rated power supply voltage, DC or 50/60 Hz sine wave input)

Operating time

±50 ms (at 25°C and 65% humidity, rated power supply voltage)

Indicators

Power (PWR): Green LED, relay output (RY): Yellow LED, alarm outputs (ALM 1/2): Red LED

Applicable standards

Conforming standards

EN 60947-5-1
Installation environment (pollution level 2, installation category III)

EMC

EN 60947-5-1

Safety standards

UL 508 (Recognition), Korean Radio Waves Act (Act 10564), CSA and CCC

Size in mm (H × W × D)

90 × 22.5 × 100


1. The rated input voltage is switched with a switch

1. The rated input voltage is switched with a switch

How can we help you?

Want to know more about OMRON Industrial robots and robotics?

Request
Contact us

Contact me K8AK-PW

k8ak-pw2 prod

Please, complete all the fields marked with *. Your personal details will be handled confidentially.

Text error notification

Text error notification

Text error notification

Text error notification

Country error notification

Details

Text area error notification

Checkbox error notification

Checkbox error notification

Thank you for submitting your request. We will come back to you as soon as possible.

We are experiencing technical difficulties. Your form submission has not been successful. Please accept our apologies and try again later. Details: [details]

Download
Request
Request
Request quotation
Request quotation

Quotation for K8AK-PW

By completing this form, you can request a quotation. Please note that only a company email address is accepted.

k8ak-pw2 prod

Please, complete all the fields marked with *. Your personal details will be handled confidentially.

Text error notification

Text error notification

Text error notification

Text error notification

Country error notification

Select notification error

Select notification error

Text area error notification

Checkbox error notification

Checkbox error notification

Thank you for requesting a quotation. We will provide you with the required information as soon as possible.

We are experiencing technical difficulties. Your form submission has not been successful. Please accept our apologies and try again later. Details: [details]

Download
Request quotation
Request quotation

Downloads