OMRON K8DS-PU specification

last update: April 3, 2017

Ratings

Rated input voltage	K8DS-PU1	3-wire 3-phase mode: 200, 220, 230, or 240 VAC
	K8DS-PU2	3-wire 3-phase mode: 380, 400, 415, or 480 VAC
Input load		K8DS-PU1: Approx. 1.7 VA K8DS-PU2: Approx. 2.8 VA
Operating value setting range (UNDER)		Undervoltage -30% to 25% of rated input voltage
Operating value		Operates at 100% of set value.
Reset value		5% of operating value (fixed)
Reset method		Automatic reset
Operating time setting range (T)	Undervoltage	0.1 to 30 s
	Phase sequence	0.1 s±0.05 s
	Phase loss	0.1 s max.
Power ON lock time (LOCK)		1 s±0.5 s
Indicators		Power (PWR): Green, Relay output (RY): Yellow, UNDER: Red
Output relays		One SPDT relay output
Output relay ratings		Rated load Resistive load 5 A at 250 VAC 5 A at 30 VDC Maximum switching capacity: 1,250 VA, 150 W Minimum load: 5 VDC, 10 mA (reference values) Mechanical life: 10 million operations min. Electrical life: 5 A at 250 VAC: 50,000 operations 3 A at 250 VAC: 100,000 operations
Ambient operating temperature		-20 to 60°C (with no condensation or icing)
Storage temperature		-25 to 65°C (with no condensation or icing)
Ambient operating humidity		25% to 85% (with no condensation)
Storage humidity		25% to 85% (with no condensation)
Altitude		2,000 m max.
Terminal screw tightening torque		0.49 to 0.59 N·m
Terminal wiring method		Recommended wire Solid wire: 2.5 mm2 Twisted wires: AWG16, AWG18 Note: 1. Ferrules with insulating sleeves must be used with twisted wires. Note: 2. Two wires can be twisted together. Recommended ferrules Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact Al 1-8RD (for AWG18) manufactured by Phoenix Contact Al0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color		N1.5
Case material		PC and ABS, UL 94 V-0
Weight		Approx. 65 g
Mounting		Mounts to DIN Track.
Dimensions		17.5 × 80 × 74 mm (W×D×H)

Specifications

Input frequency		50/60 Hz
Overload capacity		Continuous 500 V
Repeat accuracy	Operating value	±0.5% full scale (at 25°C and 65% humidity, rated power supply voltage, 50/60 Hz sine wave input)
	Operating time	±50 ms (at 25°C and 65% humidity, rated power supply voltage)
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: C22.2 No.14, CCC: GB14048.5
Insulation resistance		20 MΩ min. Between external terminals and case Between input terminals and output terminals
Dielectric strength		2,000 VAC for one minute Between external terminals and case Between input terminals and output terminals
Noise immunity		1,500 V power supply terminal common/normal mode Square-wave noise of ±1 μs/100 ns pulse width with 1-ns rise time
Vibration resistance		Frequency: 10 to 55 Hz, 0.35-mm single amplitude 10 sweeps of 5 min each in X,Y, and Z directions
Shock resistance		100 m/s2, 3 times each in 6 directions along 3 axes
Degree of protection		Terminals: IP20

Relationship of Mounting Distance between K8DS-PU Relays and Ambient Temperature (Reference Values)

The following diagram shows the relationship between the mounting distances and the ambient temperature.
If the relay is used with an ambient temperature that exceeds these values, the temperature of the K8DS may rise and shorten the life of the internal components.

last update: April 3, 2017

OMRON K8DS-PU lineup

last update: April 01, 2014

Rated input voltage*		Model
3-phase 3-wire mode	200, 220, 230, or 240 VAC	K8DS-PU1
	380, 400, 415, or 480 VAC	K8DS-PU2

Note: The input range is set with a rotary switch.
* The power supply voltage is the same as the rated input voltage.

last update: April 01, 2014

OMRON K8DS-PU dimension

last update: April 01, 2014

Three-phase Undervoltage and Phase-sequence Phase-loss Relay

K8DS-PU1
K8DS-PU2

Optional Parts for DIN Track Mounting

DIN Tracks

PFP-100N
PFP-50N

last update: April 01, 2014

OMRON K8DS-PU catalog

• Catalog
• CAD

English

Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.

*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name	Catalog Number [size]	Last Update
K8DS-PU Catalog	N191-E1-01 [1198KB]	Apr 03, 201720170403	K8DS-PU Catalog
Measuring and Monitoring Relays Application Guide	N222-E1-01 [1649KB]	Jun 01, 201820180601	Measuring and Monitoring Relays Application Guide

• NO. K8DS-PU
• TYPE:Measuring / Motor Protective Relays Component Protective Components Measuring & Monitoring relays
• DATE:2021-06-09
• Associated products:
  K8AK-PW Three-phase Voltage Relay/Features K8DS-PZ Three-phase Voltage, Asymmetry, and Phase-sequence Phase-loss Relay/Features