LY

Bi-power Relays

Power-switching Compact General-purpose Relays

Item list of LY

about this Product Family

Inquiry of this Product

last update: February 17, 2016

Model Number Structure

Structure			Relays with Plug-in Terminals		Relays with PCB Terminals	Case-surface mounting
Classification	Number of poles			With operation indicators	Relays with PCB Terminals	Case-surface mounting
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. 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
	Standard models	LY1	12, 24, 48, or 100/110 VDC	LY2	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
	Models with built-in operation indicators	LY1N	12, 24, or 100/110 VDC	LY2N	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
	Standard models	---	---	LY2Z	12, 24, 48, or 100/110 VDC
	Models with built-in operation indicators	---	---	LY2ZN	100/110, 110/120, 200/220, or 220/240 VAC
	Models with built-in operation indicators	---	---	LY2ZN	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
	Standard models	LY3	12, 24, 48, or 100/110 VDC	LY4	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
	Models with built-in operation indicators	LY3N	12, 24, 48, or 100/110 VDC	LY4N	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	---	---	---	---
	Standard models	---	---	---	---
	Models with built-in operation indicators	---	---	---	---
	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
Models with single contacts	LY1-0	12 or 24 VDC	LY2-0	12, 24, 48 or 100/110 VDC	LY3-0	12, 24, 48, or 100/110 VDC	LY4-0	12, 24, 48, or 100/110 VDC
Bifurcated contacts	---	---	LY2Z-0	100/110 VAC	---	---	---	---
Bifurcated contacts	---	---	LY2Z-0	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
Models with single contacts	LY1F	6, 12, 24, or 100/110 VDC	LY2F	12, 24, 48, or 100/110 VDC	LY3F	12, 24, or 100/110 VDC	LY4F	12, 24, or 100/110 VDC
Bifurcated contacts	---	---	LY2ZF	24, 100/110, or 200/220 VAC	---	---	---	---
Bifurcated contacts	---	---	LY2ZF	12 or 24 VDC	---	---	---	---