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LY

Bi-power Relays

LY

Power-switching Compact General-purpose Relays

Model Number Structure

Structure Relays with Plug-in Terminals
949_lu_1_3
Relays with
PCB Terminals
949_lu_1_4
Case-surface
mounting
949_lu_1_5
Classification Number
of poles
With operation
indicators
Standard models
Compliance with Electrical
Appliances and Material
Safety Act
1 *LY1 **LY1N *LY1-0 *LY1F
2 *LY2 **LY2N *LY2-0 *LY2F
Bifur-
cated
**LY2Z **LY2ZN **LY2Z-0 **LY2ZF
3 *LY3 **LY3N *LY3-0 *LY3F
4 *LY4 **LY4N *LY4-0 *LY4F
Models with diode for coil
surge absorption
(DC coil specification only)
949_lu_1_1
1 **LY1-D **LY1N-D2 --- ---
2 **LY2-D **LY2N-D2 --- ---
Bifur-
cated
**LY2Z-D **LY2ZN-D2 --- ---
3 **LY3-D **LY3N-D2 --- ---
4 **LY4-D **LY4N-D2 --- ---
Models with CR circuits for
coil surge absorption
949_lu_1_2
(AC coil specification only)
1 --- ---
2 **LY2-CR **LY2N-CR
Bifur-
cated
**LY2Z-CR **LY2ZN-CR

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 Catalog 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

When your order, specify the rated voltage.

Models with Plug-in Terminals

Number of poles 1 pole 2 poles
Classification Model Rated voltage (V) Model Rated voltage (V)
Models
with
single
contacts
Standard models LY1 12, 24, 100/110, 110/120,
or 200/220 VAC
LY2 12, 24, 100/110,110/120,
200/220, or 220/240 VAC
12, 24, 48, or 100/110 VDC 12, 24, 48, or 100/110 VDC
Models with built-in
operation indicators
LY1N 12, 24, 100/110, 110/120,
or 200/220 VAC
LY2N 12, 24, 100/110, 110/120,
200/220, or 220/240 VAC
12, 24, or 100/110 VDC 12, 24, 48, or 100/110 VDC
Models with built-in
diodes
LY1-D 12, 24, 48, or 100/110 VDC LY2-D 12, 24, 48, or 100/110 VDC
Models with built-in
diodes and operation
indicators
LY1N-D2 12, 24, or 48 VDC LY2N-D2 12, 24, 48, or 100/110 VDC
Models with built-in
CR circuits
--- --- LY2-CR 100/110, 110/120,
200/220, or 220/240 VAC
Models with built-in
CR circuits and
operation indicators
--- --- LY2N-CR 100/110, 110/120,
200/220, or 220/240 VAC
Bifurcated
contacts
Standard models --- --- LY2Z 100/110 or200/220 VAC
--- --- 12, 24, 48, or 100/110 VDC
Models with built-in
operation indicators
--- --- LY2ZN 100/110, 110/120,
200/220, or 220/240 VAC
--- --- 12 or 24 VDC
Models with built-in
diodes
--- --- LY2Z-D 12, 24, or 48 VDC
Models with built-in
diodes and operation
indicators
--- --- LY2ZN-D2 12, 24, or 100/110 VDC
Models with built-in
CR circuits
--- --- LY2Z-CR 100/110 VAC
Models with built-in
CR circuits and
operation indicators
--- --- LY2ZN-CR 100, 110, 110/120, or
200/220 VAC

Number of poles 3 poles 4 poles
Classification Model Rated voltage (V) Model Rated voltage (V)
Models
with
single
contacts
Standard models LY3 12, 24, 100/110, or 200/220
VAC
LY4 12, 24, 100/110, or 200/220
VAC
12, 24, 48, or 100/110 VDC 12, 24, 48, or 100/110 VDC
Models with built-in
operation indicators
LY3N 12, 24, 100/110, or 200/220
VAC
LY4N 12, 24, 100/110, or 200/220
VAC
12, 24, 48, or 100/110 VDC 12, 24, 48, or 100/110 VDC
Models with built-in
diodes
LY3-D 12, 24, 48, or 100/110 VDC LY4-D 12, 24, 48, or 100/110 VDC
Models with built-in
diodes and operation
indicators
LY3N-D2 12, 24, or 100/110 VDC LY4N-D2 12, 24, 48, or 100/110 VDC
Models with built-in
CR circuits
--- --- --- ---
Models with built-in
CR circuits and
operation indicators
--- --- --- ---
Bifurcated
contacts
Standard models --- --- --- ---
--- --- --- ---
Models with built-in
operation indicators
--- --- --- ---
--- --- --- ---
Models with built-in
diodes
--- --- --- ---
Models with built-in
diodes and operation
indicators
--- --- --- ---
Models with built-in
CR circuits
--- --- --- ---
Models with built-in
CR circuits and
operation indicators
--- --- --- ---

Relays with PCB Terminals

Number of
poles
1 pole 2 poles 3 poles 4 poles
Classification Model Rated
voltage (V)
Model Rated
voltage (V)
Model Rated
voltage (V)
Model Rated
voltage (V)
Models with
single
contacts
LY1-0 24,100/110,
110/120, or
200/220 VAC
LY2-0 12, 24, 100/
110, 110/120,
200/220, or
220/240 VAC
LY3-0 24, 100/110,
or 200/220
VAC
LY4-0 24, 100/110,
or 200/ 220
VAC
12 or 24 VDC 12, 24, 48 or
100/110 VDC
12, 24, 48, or
100/110 VDC
12, 24, 48, or
100/110 VDC
Bifurcated
contacts
--- --- LY2Z-0 100/110 VAC --- --- --- ---
24, 48, or
100/110 VDC

Case-surface Mounting

Number of poles 1 pole 2 poles 3 poles 4 poles
Classification Model Rated
voltage (V)
Model Rated
voltage (V)
Model Rated
voltage (V)
Model Rated
voltage (V)
Models with
single contacts
LY1F 24, 100/110,
110/120, 200/
220, or 220/
240 VAC
LY2F 12, 24, 100/
110, 110/120,
200/220, or
220/240 VAC
LY3F 12, 24, 100/
110, or 200/
220 VAC
LY4F 12, 24, 100/
110, or 200/
220 VAC
6, 12, 24, or
100/110 VDC
12, 24, 48, or
100/110 VDC
12, 24, or
100/110 VDC
12, 24, or
100/110 VDC
Bifurcated
contacts
--- --- LY2ZF 24, 100/110,
or 200/220
VAC
--- --- --- ---
12 or 24 VDC