Model Number Structure
Structure
Relays with Plug-in Terminals
Relays with
PCB Terminals
Case-surface
mounting
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)
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
(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. Refer to Catalog for information on plug-in terminal and socket combinations.

         3. Items with an asterisk (*) in the table are certified for UL and CSA. This is indicated with a certification mark on the products.

         4. Items with two asterisks (**) in the table are certified for UL and CSA. This is indicated with a certification mark on the products.

         5. All models in the table are certified for IEC (TÜV).

         6. 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
Accessories (Order Separately)
Front-mounting Sockets
Applicable
relay

model
Mounting
Method
Conductive
part

protection
Terminal
Type
Applicable
crimp

terminal/

Electric wire
Appearance
Model
Hold-down Clips/
Release Levers

(Order Separately)
LY1[]
LY2[]

LY2[]-CR
Mounted
on a

DIN track

or with

screws
Available
Push-In
Plus

Terminal
Ferrules
Solid wire

Stranded wire
PTF-08-PU
* LY2[]-CR

cannot be

used
With release lever
* Hold by release

lever
PTF-08-PU-L
LY2[]-CR: Y92H-3
Other than those

above: PYC-A1
Screw
terminal

(M3.5

screw

size)
Forked
terminals

Solid wire

Stranded wire
PTFZ-08-E *
None
Round
terminals

Forked

terminals

Solid wire

Stranded wire
PTF08A
LY3[]
None
Screw
terminal

(M3.5

screw

size)
Round
terminals

Forked

terminals

Solid wire

Stranded wire
PTF11A
PYC-A1
LY4[]
Available
Push-In
Plus

Terminal
Ferrules
Solid wire

Stranded wire
PTF-14-PU-L
PYC-A1
Screw
terminal

(M3.5

screw

size)
Forked
terminals

Solid wire

Stranded wire
PTFZ-14-E *
None
Round
terminals

Forked

terminals

Solid wire

Stranded wire
PTF14A
* The PTFZ-[]-E Relays have finger protection. Round terminals cannot be used. Use forked terminals.
Back-mounting Sockets
Applicable
relay model
Terminal Type
Appearance
Model
Hold-down Clips
(Order Separately)
LY1[]
LY2[]

LY2[]-CR
Solder terminals
PT08 *
LY2[]-CR: PYC-1
Other than those above:

PYC-P
Wrapping terminals
PT08QN
PCB terminals
PT08-0
LY3[]
Solder terminals
PT11 *
PYC-P
Wrapping terminals
PT11QN
PCB terminals
PT11-0
LY4[]
Solder terminals
PT14 *
PYC-P
Wrapping terminals
PT14QN
PCB terminals
PT14-0
* When ordering PT08, PT11, or PT14 sockets, please note that the minimum order quantity is 10 and orders are accepted in multiples of the minimum order.
Relay Hold-down Clips
Application
Used with Socket
Used with Socket
mounting plate
For models with built-in CR circuits
Appearance
Model
PYC-A1
PYC-P
PYC-S
Y92H-3
PYC-1
Minimum order
(quantity) *
100
100
10
10
10
* Orders are accepted in multiples of the minimum order.
Socket Mounting Plates
Applicable sockets
Number of sockets
Model
PT08
PT08QN
1
PYP-1 *1
18
PYP-18 *2
36
PYP-36 *2
PT11
PT11QN
1
PTP-1-3
12
PTP-12
PT14
PT14QN
1
PTP-1
10
PTP-10
*1. When ordering PYP-1, please note that the minimum order quantity is 10 and orders are accepted in multiples of the minimum order.
*2. PYP-18 and PYP-36 can be cut to any required length.
DIN Track Mounting Parts
Type
 
Appearance
Model
DIN Tracks
Shallow type, total length: 1 m
PFP-100N
Shallow type, total length: 0.5 m
PFP-50N
Deep type, total length: 1 m
PFP-100N2
End Plate
PFP-M
Spacer
PFP-S