Bi-power Relays
LY
Power-switching Compact General-purpose Relays
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.
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.
*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 | |