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- - - 12 3 45 1. Number of Poles 3. Enclosure ratings 4: 4 poles H: Hermetically sealed 2. Contact 4. Approval Blank: Single US: Class 1 Division 2 approval Z: Bifurcated 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 MY4H-US 4PDT (bifurcated) MY4ZH-US Hermetically Sealed Relay MY4H 1 Specifications ■ Ratings Coil Rated voltage (V) Rated current (mA) Coil resistance Must operate Must release Max. voltage Power (Ω) voltage voltage consumption 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 (60 Hz) 24 53.8 46 180 Contact Ratings Contact material Ag alloy Rated load Resistive 110 VAC, 3 A p.f.=1 24 VDC, 3 A Inductive 110 VAC, 8 A p.f.=0.4 24 VDC, 1.5 A L/R–7 ms Rated carry current 3 A Max. switching voltage 125 VAC, 125 VDC Max. switching current 3 A Max. switching power 330 VA 72 W ■ Characteristics Contact resistance 50 mΩ max. Operate time 20 ms max. Release time 20 ms max. Max. operating Mechanical: 18,000 operations/hr frequency Electrical: 1,800 operations/hr (under rated load) Insulation resistance 100 MΩ min. (at 500 VDC) Dielectric strength 1,000 VAC, 1 min between coil and contacts 1,000 VAC, 1 min between contacts of different polarity 700 VAC, 1 min between contacts of same polarity Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude) Malfunction: 10 to 55 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude) 2 Shock resistance Destruction: 1,000 m/s Malfunction: 2 When energized: 200 m/s 2 When not energized: 200 m/s Endurance Mechanical: Single contact: 50,000,000 operations Bifurcated contact: 5,000,000 operations Electrical: 100,000 operations. (Single contact) 50,000 operations. (Bifurcated contact) Ambient temperature Operating: –25 to 60°C Ambient humidity Operating: 5% to 85% Weight Approx. 50 g 2 Hermetically Sealed Relay MY4H Engineering Data Maximum Switching Power Endurance MY4(Z)H MY4H AC resistive load AC inductive load (cosφ=0.4) 110 VAC resistive load 24 VDC resistive load DC resistive load DC inductive load (L/R = 7 ms) 110 VAC inductive 24 VDC inductive load (L/R = 7 ms) load (cosφ=0.4) Switching voltage (V) Switching current (A) Note: The endurance is half for bifurcated contact models. Dimensions Terminal Arrangement/ Solder Terminal Models Internal Connections MY4(Z)H 2.6 (BOTTOM VIEW) Fourteen, 1.2-dia.×3, round holes 22 max. 28.5 max. (There is no coil polarity.) 35 max. 6.4 Hermetically Sealed Relay MY4H 3 Switching current (A) 4 Endurance (x10 operations) Socket Track-mounted Socket Conforming to Class 1 Division 2  Special Socket with Class 1 Division 2 approval.  Holding clips contribute to safety by preventing the Relay falling out of the Socket due to vibration. ■ Ordering Information Item Pole Mode Track-mounted socket 4 PYF14A-E-US Note: 1. Class 1 Division 2 approval is obtained for use with the MY4(Z)H Relay. 2. Clips are not included. ■ Dimensions Terminal Arrangement/ PYF14A-E-US Mounting Holes +0.2 Internal Connections Tow, 4.2x5 6 −0.1 mounting Two, M3, M4, or 4.5-dia holes 14-M3x8 (Top View) 72 max. 4 (TOP VIEW) 29.5 max. Note: Track mounting is also 31 max. possible. ■ Accessory (Option) PYC-A1 (2 pcs per set) 36.3 4.5 4.5 1.2 ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. Cat. No. J131-E1-02 In the interest of product improvement, specifications are subject to change without notice. 4 Hermetically Sealed Relay MY4H Terms and Conditions of Sale 1. Offer; Acceptance. 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No. J131-E1-02 07/05 Note: Specifications are subject to change. © 2014 Omron Electronics LLC Printed in U.S.A. Printed on recycled paper.