Omron MY4H DATASHEET

Hermetically Sealed Relay

MY4H

Hermetically Sealed Relay Ideal for Hazardous Locations

• Class 1 Division 2 approved.

• Fully hermetically sealed for hazardous locations.

• Cadmium-free contacts for environment-friendly use.

• Models with bifurcated contact also available.

• Conforms to UL508 and CSA 22.2.

Model Number Structure

■ Model Number Legend

MY- - -

123 45

1. Number of Poles

4: 4 poles

2. Contact

Blank: Single Z: Bifurcated

3. Enclosure ratings

H: Hermetically sealed

4. Approval

US: Class 1 Division 2 approval

5. Rated voltage

12 VDC, 24 VDC, 24 VAC, 110/120 VAC

Ordering Information

■ List of Models

Type Contact form Plug-in socket/solder terminals

Hermetically sealed 4PDT

4PDT (bifurcated)

MY4H-US MY4ZH-US

Hermetically Sealed Relay MY4H 1

Specifications

■ Ratings

Coil

Rated voltage (V) Rated current (mA) Coil resistance

50 Hz 60 Hz

DC 12 75 160 80% max. 10% min. 110% 900 mW

24 36.9 650

AC 110/120 9.9/10.8 8.4/9.2 4,430 30% min. 0.9-1.1 VA

24 53.8 46 180

(

Ω)

Must operate

voltage

Must release

voltage

Max. voltage Power

consumption

(60 Hz)

Contact Ratings

Contact material Ag alloy

Rated load Resistive

Rated carry current 3 A

Max. switching voltage 125 VAC, 125 VDC

Max. switching current 3 A

Max. switching power 330 VA

p.f.=1

Inductive p.f.=0.4 L/R–7 ms

110 VAC, 3 A 24 VDC, 3 A

110 VAC, 8 A 24 VDC, 1.5 A

72 W

■ Characteristics

Contact resistance 50 mΩ max.

Operate time 20 ms max.

Release time 20 ms max.

Max. operating frequency

Insulation resistance 100 M

Dielectric strength 1,000 VAC, 1 min between coil and contacts

Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude)

Shock resistance

Endurance Mechanical: Single contact: 50,000,000 operations

Ambient temperature Operating: –25 to 60

Ambient humidity Operating: 5% to 85%

Weight Approx. 50 g

Mechanical: 18,000 operations/hr Electrical: 1,800 operations/hr (under rated load)

Ω min. (at 500 VDC)

1,000 VAC, 1 min between contacts of different polarity 700 VAC, 1 min between contacts of same polarity

Malfunction: 10 to 55 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude)

Destruction: 1,000 m/s Malfunction:

When energized: 200 m/s When not energized: 200 m/s

Bifurcated contact: 5,000,000 operations

Electrical: 100,000 operations. (Single contact)

50,000 operations. (Bifurcated contact)

°C

2 Hermetically Sealed Relay MY4H

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