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Bi-power Relays
LY
CSM_LY_DS_E_4_1
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
Structure
Classification
Number
of poles
With operation indicators
*LY1
**LY1N
*LY1-0
*LY1F
*LY2
**LY2N
*LY2-0
*LY2F
**LY2Z
**LY2ZN
**LY2Z-0
**LY2ZF
3
*LY3
**LY3N
*LY3-0
*LY3F
4
*LY4
**LY4N
*LY4-0
*LY4F
1
**LY1-D
**LY1N-D2
---
---
**LY2-D
**LY2N-D2
---
---
**LY2Z-D
**LY2ZN-D2
---
---
3
**LY3-D
**LY3N-D2
---
---
4
**LY4-D
**LY4N-D2
---
---
1
---
---
**LY2-CR
**LY2N-CR
**LY2Z-CR
**LY2ZN-CR
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)
2
2
2
Bifurcated
Bifurcated
Bifurcated
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.
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