Omron MY3 200/220VAC General Purpose Relay
The Omron MY3 200/220VAC general purpose relay is a miniature plug-in power relay designed for industrial control panels that use higher AC control voltages. With a 200/220 VAC coil and 3PDT contact form, it provides multi-circuit switching in a compact, serviceable relay format.
Omron identifies this model as a plug-in, 11-pin, 3PDT relay with 5 A rated carry current, silver contact material, transparent case, mechanical indicator, label facility, and compatibility with PYF11A socket mounting. These features make it suitable for control cabinets where visual inspection, socket replacement, and organized wiring are important.
Omron MY3 200/220VAC Technical Overview
The MY3 200/220VAC relay uses three changeover contacts controlled by one AC coil. This 3PDT design allows one control action to switch several isolated circuits at once. The contact rated load includes 220 VAC 5 A for resistive loads and 24 VDC 5 A for resistive DC loads. For inductive loads, Omron lists reduced current ratings, so solenoids, coils, and similar devices require careful engineering review.
For coil operation, Omron lists current values for 200 VAC and 220 VAC at both 50 Hz and 60 Hz. This is helpful for installations in regions with different supply frequencies. The listed coil resistance is 12,950 ohms, and the operate voltage is specified as 80 percent maximum of rated voltage.
Where This Relay Fits Best
The Omron MY3 200/220VAC general purpose relay is suited to industrial control systems where the control voltage is derived from a 200 or 220 VAC supply. Typical applications include machine control panels, auxiliary logic circuits, signal routing, alarm systems, interlocks, pump panels, and automation cabinets.
The relay is especially practical when multiple control paths need to be switched from a single command. For example, one coil signal may change an interlock path, energize a status circuit, and provide a controller feedback signal at the same time. The 3PDT structure makes this possible without adding separate relays for each path.
Maintenance and Selection Notes
The plug-in design supports fast replacement when used with a compatible socket. This is valuable in production environments where downtime must be minimized. The mechanical indicator also helps maintenance teams confirm relay operation quickly before performing deeper electrical checks.
Correct voltage selection is critical. The MY3 200/220VAC should not be installed in 12 V, 110/120 V, or DC coil circuits. Contact ratings must also be matched to the real load, not only the nominal current. Inductive loads, inrush current, and switching frequency can all affect service life.
For related Omron relay information, visit Omron automation components.
FAQ
What is the Omron MY3 200/220VAC relay used for?
It is used for general-purpose switching in industrial control panels, automation equipment, machine circuits, interlocks, alarm systems, and auxiliary control applications.
What is the coil voltage of this relay?
The relay is designed for 200/220 VAC coil operation. The control circuit must match this AC voltage range.
What does 3PDT provide in a control circuit?
3PDT provides three independent changeover contacts. This allows one relay coil to switch three separate circuit paths at the same time.
Omron MY3 200/220VAC Is this relay plug-in type?
Yes. It uses plug-in terminals and is commonly used with an 11-pin socket, making installation and replacement easier.
Can it switch inductive loads?
Yes, but only within the lower inductive load ratings. Inductive loads require more caution than resistive loads because they create electrical stress during switching.
Why is the transparent case useful?
The transparent case helps technicians visually inspect the relay mechanism and confirm general operating condition during maintenance.