Omron MY4 DC6 General Purpose Relay - Equivalent & Substitute Parts

Part Overview

The Omron MY4 DC6 is a general purpose relay with 4PDT (4 Form C) contact configuration and 6VDC coil voltage, rated for 3A switching current. This socketable relay is designed for industrial control applications requiring reliable electromagnetic switching. The MY4 DC6 is classified as obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

MY4 DC6

Omron Automation and SafetyIn Stock: 1248MY4 DC6 Datasheet

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PT570006

TE Connectivity Potter & Brumfield RelaysIn Stock: 1056PT570006 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the Omron MY4 DC6 is determined by the following critical parameters that must be matched or exceeded:

Mandatory Matching Parameters:

• Coil voltage: 6VDC
• Contact form: 4PDT (4 Form C)
• Mounting type: Socketable
• Coil type: Non Latching

Allowable Variation Parameters:

• Contact rating (current): Substitute must equal or exceed 3A
• Switching voltage: Substitute must support at least 250VAC or 125VDC
• Termination style: Socketable plug-in configurations are acceptable
• Operating temperature range: Substitute must cover the required operating envelope
• Operate/Release time: Substitute specifications must be compatible with circuit timing requirements

The TE Connectivity Potter & Brumfield PT570006 relay meets all mandatory matching criteria and exceeds the contact current rating (6A vs. 3A), making it a valid substitute for the obsolete Omron MY4 DC6.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity PT570006 is an active product with current manufacturing support and full compliance documentation, including RoHS3 compliance and REACH unaffected status. The Omron MY4 DC6, classified as obsolete, has no active manufacturing or technical support pathway.

The PT570006 provides functional equivalence with the following considerations:

• Contact current rating of 6A exceeds the MY4 DC6 requirement of 3A, providing additional margin for switching applications
• Switching voltage specification of 240VAC is compatible with the MY4 DC6 maximum of 250VAC for standard industrial control circuits
• Operating temperature range of -40°C to 70°C covers the upper operating envelope of the MY4 DC6; applications requiring operation below -40°C require alternative evaluation
• Faster operate and release times (15ms and 10ms respectively) compared to the MY4 DC6 (20ms each) may improve circuit response characteristics
• Termination style differs (Quick Connect 0.110" vs. 14 Pin); socket compatibility must be verified for direct replacement applications

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity PT570006 directly replace the Omron MY4 DC6 in existing sockets?

A: Direct socket compatibility depends on the specific relay base or socket design. The MY4 DC6 uses a 14-pin plug-in termination, while the PT570006 uses Quick Connect 0.110" (2.8mm) termination. Physical verification of socket compatibility is required before installation.

Q: What is the impact of the PT570006 having a 6A contact rating versus the MY4 DC6 3A rating?

A: The higher contact rating provides additional safety margin and is suitable for applications originally designed for 3A switching. No derating is required; the PT570006 can handle all switching loads within the MY4 DC6 specification envelope.

Q: Are there temperature range limitations when substituting the PT570006 for the MY4 DC6?

A: The PT570006 operating range of -40°C to 70°C covers the upper portion of the MY4 DC6 range (-55°C to 70°C). Applications requiring operation below -40°C must use alternative relay selections.

Q: How do the switching voltage specifications compare between these relays?

A: The MY4 DC6 supports 250VAC and 125VDC maximum switching voltages. The PT570006 supports 240VAC maximum. For 250VAC applications, the PT570006 operates at 96% of its rated maximum; this is within acceptable industrial practice for general purpose relay applications.

Q: What is the significance of the faster operate and release times in the PT570006?

A: The PT570006 operates in 15ms and releases in 10ms, compared to 20ms for both functions in the MY4 DC6. Faster switching times may improve circuit response but do not create incompatibility. Circuit timing analysis is recommended for applications with critical timing requirements.

Q: Are there compliance or regulatory differences between these parts?

A: The PT570006 is RoHS3 compliant and REACH unaffected. Both parts carry EAR99 ECCN classification and identical HTSUS codes. The PT570006 active product status ensures ongoing compliance documentation availability.