Bi-power Relays Power-switching Compact General-purpose Relays • The standard models include models that are compliant with the UL, CSA, and SEV safety standards and with the Electrical Appliances and Material Safety Act. • Equipped with an arc barrier for arc interruption. • Withstand voltages up to 2,000 V. • New built-in diode and built-in CR circuit models have joined the series. • The lineup also includes models that are compliant with the LR and VDE safety standards. • Single-pole and double-pole models have AC4 ratings and DC2 ratings (operating coil ratings: 100/ 110 VAC, 110/120 VAC, 200/220 VAC, 220/240 VAC, and 100/110 VDC). • Three-pole and four-pole models have AC4 ratings and DC2 ratings (operating coil ratings: 100/110 VAC, 200/220 VAC and 100/110 VDC). Refer to the standards certifications and compliance section of your OMRON website for the latest information on certified models. Refer to the Common Relay Precautions. Model Number Structure Relays with Plug-in Terminals Relays with PCB Terminals Case-surface mounting With operation indicators 1 Standard models Compliance with Electrical Appliances and Material Safety Act Models with diode for coil surge absorption (DC coil specification only) Models with CR circuits for coil surge absorption (AC coil specification only) Note: 1. Cells with a diagonal line cannot be manufactured. Ask your OMRON representative for details on manufacturing products for cells containing “---” in the above table. 2. If #187 tab terminals are required, use the LY1F-T2 or LY2F-T2 (single-pole or double-pole models only). 3. Refer to page 12 for information on plug-in terminal and socket combinations. 4. Items with an asterisk (*) in the table are certified for UL, CSA, and SEV. This is indicated with a certification mark on the products. 5. Items with two asterisks (**) in the table are certified for UL and CSA. This is indicated with a certification mark on the products. 6. All models in the table are certified for IEC (TÜV). 7. The models with plug-in terminals (single-pole, double-pole, and 4-pole) were combined with the PTF-E for the EC Declaration of Conformity. These products display the CE Marking.

Ordering Information Models with Plug-in Terminals Number of poles Classification Standard models Models with built-in operation indicators Models with single Models with built-in contacts diodes Models with built-in diodes and operation indicators Models with built-in CR circuits Models with built-in CR circuits and operation indicators Standard models 3 poles Rated voltage (V) 12, 24, 100/110, or 200/220 VAC 4 poles Rated voltage (V) 12, 24, 100/110, or 200/220 VAC Bifurcated contacts Models with built-in diodes Models with built-in diodes and operation indicators Models with built-in CR circuits...

Ratings and Specifications Ratings Standard Models with Built-in Operation Indicators Operating Coil, Single-pole and Double-pole Models Item Rated voltage (V) Must-operate voltage (V) Armature ON Must-operate voltage (V) Armature ON 4 poles Item Rated voltage (V) Must-operate voltage (V) Armature ON Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15%/–20% for the AC rated current and ±15% for the DC coil resistance. 2. The AC coil resistance and inductance values are reference values only. (at 60 Hz). 3. Operating characteristics...

LY Refer to List of Certified Models for a list of models that are certified for safety standards and the Electrical Appliances and Material Safety Act. Classification Item Resistive load Contact type Contact materials 15 A at 110 VAC 15 A at 24 VDC Rated load Rated carry current Maximum contact voltage Maximum contact current Double-, 3-, and 4-pole models Inductive load Inductive load Resistive load (cos φ = 0.4, L/R = 7 ms) (cos φ = 0.4, L/R = 7 ms) Single Ag alloy 10 A at 110 VAC 10 A at 110 VAC 7.5 A at 110 VAC 7 A at 24 VDC 10 A at 24 VDC 5 A at 24 VDC 15 A 10 A 250 VAC 250 VAC 125 VDC...

Engineering Data Engineering Data Maximum Switching Capacity AC resistive load Endurance Curve AC resistive load LY2 Number of operations (×104 operations) LY1 Number of operations (×104 operations) 100 50 110 VAC inductive load (cos φ = 0.4) 24 VDC inductive load (L/R = 7 ms) 24 VDC 110 VAC inductive load inductive load (cos φ = 0.4) (L/R = 7 ms) Ambient Temperature vs. Mustoperate and Must-release Voltage LY2Z Number of operations (×104 operations) Number of operations (×104 operations) 1,000 24 VDC resistive load 110 VAC resistive load 110 VAC inductive load (cos φ = 0.4) 24 VDC inductive...

Rating: 100% applied Rated power consumption: 1 W Maximum operating temperature (120° C) Rating: 100% applied Rated power consumption: 1.0 VA Maximum operating temperature (120° C) Maximum operating temperature (120° C) LY3 100/110 VAC at 50Hz Rating: 100% applied Rated power consumption: 1.6 VA Maximum operating temperature (120° C) Coil temperature rise (°C) Rating: 100% applied Rated power consumption: 1.5 W Maximum operating temperature (120° C) Coil temperature rise (°C) Coil temperature rise (°C) Rating: 100% applied Rated power consumption: 1.4 VA LY3 24 VDC Coil temperature rise (°C)...

N = 20 Measurement: Shock was applied 2 times each in 6 directions along 3 axes with the Relay energized and not energized to check the shock values that cause the Relay to malfunction. Criteria: Non-energized: 200 m/s2 , Energized: 200 m/s2 Shock direction Terminal Arrangement/Internal Connections (Bottom View) LY1 (Check the coil polarity when wiring and wire all connections correctly.) Note: 1. For the DC models, check the coil polarity when wiring and wire all connections correctly. 2. The indicator is red for AC and green for DC. 3. The operation indicator indicates the energization of the...

Terminal Arrangement/Internal Connections (Bottom View) LY3-D Check the coil polarity when wiring and wire all connections correctly. Note: 1. For the DC models, check the coil polarity when wiring and wire all connections correctly. 2. The indicator is red for AC and green for DC. 3. The operation indicator indicates the energization of the coil and does not represent contact operation. Check the coil polarity when wiring and wire all connections correctly. Terminal Arrangement/Internal Connections (Bottom View) LY4 Check the coil polarity when wiring and wire all connections correctly. Check...