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Omron relays. General Purpose Relays. 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

Standard Models with Built-in Operation Indicators

Operating Coil, Single-pole and Double-pole Models

Item Rated current
(mA)
Coil
resist-
ance
(Ω)
Coil inductance (H) Must-
operate
voltage
(V)
Must-
release
voltage
(V)
Maximum
voltage
(V)
Power
con-
sumption
(VA, W)
Rated
voltage (V)
50 Hz 60Hz Armature
OFF
Armature
ON
AC 12 106.5 91 46 0.17 0.33 80% max.
*1
30% min.
*2
110% of
rated
voltage
Approx. 1.0
to 1.2
(at 60 Hz)
24 53.8 46 180 0.69 1.3
50 25.7 22 788 3.22 5.66
100/110 11.7/12.9 10/11 3,750 14.54 24.6 Approx. 0.9
to 1.1
(at 60 Hz)
110/120 9.9/10.8 8.4/9.2 4,430 19.2 32.1
200/220 6.2/6.8 5.3/5.8 12,950 54.75 94.07
220/240 4.8/5.3 4.2/4.6 18,790 83.5 136.4
DC 6 150 40 0.16 0.33 10% min.
*2
Approx. 0.9
12 75 160 0.73 1.37
24 36.9 650 3.2 5.72
48 18.5 2,600 10.6 21.0
100/110 9.1/10 11,000 45.6 86.2

3 poles

Item Rated current
(mA)
Coil
resist-
ance
(Ω)
Coil inductance (H) Must-
operate
voltage
(V)
Must-
release
voltage
(V)
Maximum
voltage
(V)
Power
con-
sumption
(VA, W)
Rated
voltage (V)
50 Hz 60Hz Armature
OFF
Armature
ON
AC 12 159 134 24 0.12 0.21 80% max.
*1
30% min.
*2
110% of
rated
voltage
Approx.
1.6 to 2.0
(at 60 Hz)
24 80 67 100 0.44 0.79
100/110 14.1/16 12.4/13.7 2,300 10.5 18.5
200/220 9.0/10.0 7.7/8.5 8,650 34.8 59.5
DC 12 112 107 0.45 0.98 10% min.
*2
Approx. 1.4
24 58.6 410 1.89 3.87
48 28.2 1,700 8.53 13.9
100/110 12.7/13 8,500 29.6 54.3

4 poles

Item Rated current
(mA)
Coil
resist-
ance
(Ω)
Coil inductance (H) Must-
operate
voltage
(V)
Must-
release
voltage
(V)
Maximum
voltage
(V)
Power
con-
sumption
(VA, W)
Rated
voltage (V)
50 Hz 60Hz Armature
OFF
Armature
ON
AC 12 199 170 20 0.1 0.17 80% max.
*1
30% min.
*2
110% of
rated
voltage
Approx.
1.95 to 2.5
(at 60 Hz)
24 93.6 80 78 0.38 0.67
100/110 22.5/25.5 19/21.8 1,800 10.5 17.3
200/220 11.5/13.1 9.8/11.2 6,700 33.1 57.9
DC 12 120 100 0.39 0.84 10% min.
*2
Approx. 1.5
24 69 350 1.41 2.91
48 30 1,600 6.39 13.6
100/110 15/15.9 6,900 32.0 63.7
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 were measured at a coil temperature of 23°C.
4. The maximum voltage capacity was measured at an ambient temperature of 23°C.
*1. There is variation between products, but actual values are 80% max.
To ensure operation, apply at least 80% of the rated value (at a coil temperature of +23° C).
*2. The actual values are 30% min. for AC and 10% min. for DC. To ensure release, use a value that is lower than the
specified value.

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 1 pole Double-, 3-, and 4-pole
models
Bifurcated contacts
Load Resistive
load
Inductive load
(cos φ = 0.4,
L/R = 7 ms)
Resistive
load
Inductive load
(cos φ = 0.4,
L/R = 7 ms)
Resistive
load
Inductive load
(cos φ = 0.4,
L/R = 7 ms)
Contact type Single Bifurcated
Contact
materials
Ag alloy Ag
Rated load 15 A at 110 VAC
15 A at 24 VDC
10 A at 110 VAC
7 A at 24 VDC
10 A at 110 VAC
10 A at 24 VDC
7.5 A at 110 VAC
5 A at 24 VDC
5 A at 110 VAC
5 A at 24 VDC
4 A at 110 VAC
4 A at 24 VDC
Rated carry
current
15 A 10 A 7 A
Maximum
contact
voltage
250 VAC
125 VDC
250 VAC
125 VDC
250 VAC
125 VDC
Maximum
contact
current
15 A 15 A 10 A 10 A 7 A 7 A
Type Single-pole and double-pole models
(standard models and bifurcated
contact models)
Single-pole, double-pole models
(models with built-in operation indicators,
models with built-in diodes, and models with
built-in CR circuits),
3-pole and 4-pole models
Ambient operating
temperature
-25 to 55°C
(with no icing or condensation) *1
-25 to +40°C
(with no icing or condensation) *2
Ambient operating
humidity
5% to 85%
Note: 1. Some models in the LY1 and LY2 Series have an upper temperature limit of +40°C. This limitation is due to the
diode junction temperature and the elements used.
2. Refer to the ambient temperature and contact carry current characteristics data on Catalog for information on
operation in temperature conditions that are not described here.
3. When you apply a minimum of 10 A of current to an LY1 when it is used in combination with a PTF08A,
PTF08A-E, or PT08, connect each of the following terminal pairs: (1) to (2), (3) to (4), and (5) to (6).
*1. If the carry current is 4 A or less, the usable ambient temperature range is −25 to 70° C.
*2. If the flowing current is 4 A or less, the usable ambient temperature range is -25 to 55° C.

Characteristics

Type Standard models, models with
built-in operation indicators,
models with built-in CR circuits,
and models with built-in diodes
Bifurcated contacts
Contact resistance *1 50 mΩ max.
Operating time *2 25 ms max.
Release time *2 25 ms max.
Maximum
operating
frequency
Mechanical 18,000 operations/h
Rated load 1,800 operations/h
Insulation resistance *3 100 MΩ min.
Dielectric
strength
Between coil and
contacts
2,000 VAC at 50/60 Hz for 1 min.
Between contacts
of different
polarity
Between contacts
of the same
polarity
1,000 VAC at 50/60 Hz for 1 min.
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)
Shock
resistance
Destruction 1,000 m/s2
Malfunction 200 m/s2
Endurance Mechanical AC: 50,000,000 operations min.
DC: 100,000,000 operations min.
(switching frequency: 18,000 operations/h)
Electrical *4 1-, 3-, 4-pole: 200,000 operations min.
2-pole: 500,000 operations min.
(rated load, operating frequency: 1,800
operations/h)
2-pole: 500,000 operations min.
(rated load, operating frequency: 1,800
operations/h)
Failure rate P value
(reference value) *5
100 mA at 5 VDC 10mA at 5 VDC
Weight 1-pole and 2-pole: 40 g, 3-pole: Approx. 50 g, 4-pole: Approx. 70 g
Note: The values at the left are initial values.
*1. Measurement conditions: 1 A at 5 VDC using the voltage drop method
*2. Measurement conditions: With rated operating power applied, not including contact bounce.
Ambient temperature condition: 23° C
*3. Measurement conditions: For 500 VDC applied to the same location as for dielectric strength measurement.
*4. Ambient temperature condition: 23° C
*5. This value was measured at a switching frequency of 120 operations per minute.

Endurance Under Real Loads (Reference Only)

Item LY1, 100 VAC LY2, 100 VAC
Load type Conditions Operating
frequency
Electrical life
(×10,000
operations
min.)
Conditions Operating
frequency
Electrical life
(×10,000
operations
min.)
AC motor 400 W, 100 VAC
single-phase with
35-A inrush
current, 7-A
current flow
ON for 10 s,
OFF for 50 s
5 200 W, 100 VAC
single-phase with
25-A inrush
current, 5-A
current flow
ON for 10 s,
OFF for 50 s
20
AC lamp 300 W, 100 VAC
with 51-A inrush
current, 3-A
current flow
ON for 5 s,
OFF for 55 s
10 300 W, 100 VAC
with 51-A inrush
current, 3-A
current flow
ON for 5 s,
OFF for 55 s
8
500 W, 100 VAC
with 78-A inrush
current, 5-A
current flow
2.5
Capacitor
(2,000 μF)
24 VDC with 50-A
inrush current,
1-A current flow
ON for 1 s,
OFF for 6 s
10 24 VDC with 50-A
inrush current,
1-A current flow
ON for 1 s,
OFF for 15 s
1
24 VDC with 20-A
inrush current,
1-A current flow
15
AC solenoid 50 VA with 2.5-A
inrush current,
0.25-A current
flow
ON for 1 s,
OFF for 2 s
150 50 VA with 2.5-A
inrush current,
0.25-A current
flow
ON for 1 s,
OFF for 2 s
100
100 VA with 5-A
inrush current,
0.5-A current flow
80 100 VA with 5-A
inrush current,
0.5-A current flow
50
Item LY4, 100 VAC
Load type Conditions Operating frequency Electrical life
(×10,000 operations min.)
AC motor 200 W, 200 VAC three-phase with 5-A
inrush current, 1-A current flow
ON for 10 s,
OFF for 50 s
50
750 W, 200 VAC three-phase with 18-A
inrush current, 3.5-A current flow
7
AC lamp 300 W, 100 VAC with 51-A inrush current,
3-A current flow
ON for 5 s,
OFF for 55 s
5
Capacitor
(2,000 μF)
24 VDC with 50-A inrush current,
1-A current flow
ON for 1 s,
OFF for 15 s
0.5
24 VDC with 20-A inrush current,
1-A current flow
ON for 1 s,
OFF for 2 s
20
AC solenoid 50 VA with 2.5-A inrush current,
0.25-A current flow
ON for 1 s,
OFF for 2 s
100
100 VA with 5-A inrush current,
0.5-A current flow
50

Solder terminals

LY1
LY1N
LY1-D
LY1N-D2

LY Dimensions 2

LY2, LY2-D
LY2Z, LY2Z-D
LY2N, LY2N-D2
LY2ZN, LY2ZN-D2

LY Dimensions 3

LY3
LY3N
LY3-D

LY Dimensions 4

LY4
LY4N
LY4-D
LY4N-D2

LY Dimensions 5

LY2-CR
LY2Z-CR
LY2N-CR
LY2ZN-CR

LY Dimensions 6
* These dimensions are for the LY2N-CR.

Relays with PCB Terminals

LY1-0, LY3-0, LY2-0, and LY4-0

LY Dimensions 8
Note: The dimensions depicted here are for the LY2-0.
The dimension with an asterisk (*) is 6.4 for the LY1-0.

Case-surface mounting

LY1F
LY2F

LY Dimensions 10
Note: The dimensions depicted here are for the LY1F. The LY2F is also conforms to these measurements.

LY3F

LY Dimensions 11

LY4F

LY Dimensions 12