Omron MY2 AC12 General Purpose Relay - Equivalent & Substitute Parts

Part Overview

The Omron MY2 AC12 is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 5A at 12VAC coil voltage. This socketable relay is designed for standard switching applications requiring non-latching operation. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

MY2 AC12

Omron Automation and SafetyIn Stock: 760MY2 AC12 Datasheet

Current PartRFQ

PT270512

TE Connectivity Potter & Brumfield RelaysIn Stock: 831PT270512 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the Omron MY2 AC12 is determined by the following critical parameters:

• Coil voltage: 12VAC (exact match required)
• Contact form: DPDT (2 Form C) configuration (exact match required)
• Mounting type: Socketable with plug-in termination (exact match required)
• Coil type: Non-latching operation (exact match required)
• Must operate and release voltages: 9.6 VAC and 3.6 VAC respectively (exact match required)

The TE Connectivity Potter & Brumfield PT270512 satisfies all critical substitution criteria. While the PT270512 offers higher contact current rating (12A versus 5A), enhanced switching voltage capability (400VAC maximum), and additional features (mechanical indicator, test button), these represent functional improvements rather than incompatibilities. The socketable mounting, plug-in termination, and electrical operating characteristics remain compatible with the original MY2 AC12 specification.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity PT270512 is the qualified substitute for the obsolete Omron MY2 AC12. Selection is based on the following engineering criteria:

Product status: The PT270512 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete MY2 AC12.

Compliance and certifications: The PT270512 is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Functional compatibility: Both relays share identical coil voltage (12VAC), contact configuration (DPDT), mounting method (socketable), and operating voltage thresholds (9.6 VAC must-operate, 3.6 VAC must-release). The PT270512's higher current rating (12A) and switching voltage capability (400VAC) provide enhanced performance margins without introducing incompatibility.

Termination compatibility: Both relays feature plug-in termination suitable for standard relay sockets. The PT270512 additionally supports quick-connect terminals, maintaining backward compatibility while offering installation flexibility.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity PT270512 directly replace the Omron MY2 AC12 in existing installations?

A: Yes. Both relays feature identical socketable mounting, plug-in termination, 12VAC coil voltage, DPDT contact configuration, and matching operating voltage thresholds. The PT270512 installs into the same socket without modification.

Q: What is the significance of the higher current rating on the PT270512 (12A versus 5A)?

A: The PT270512's 12A contact rating provides additional capacity beyond the MY2 AC12's 5A specification. This represents a functional improvement that does not create incompatibility. Applications originally designed for 5A operation remain fully compatible.

Q: Are there temperature range differences between these relays?

A: The Omron MY2 AC12 operates across -55°C to 70°C, while the TE Connectivity PT270512 operates across -40°C to 70°C. For applications requiring operation below -40°C, the original MY2 AC12 specification must be maintained. For standard industrial temperature ranges, both relays are equivalent.

Q: What packaging is available for the PT270512?

A: The PT270512 is supplied in bulk packaging, suitable for component inventory and integration into assembly operations.

Q: How do the contact materials differ between these relays?

A: The MY2 AC12 uses pure silver (Ag) contacts, while the PT270512 uses silver-nickel (AgNi) contacts. Silver-nickel provides enhanced durability and resistance to contact wear in switching applications, representing a material improvement.