Phoenix Contact 2904694 SSR Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2904694 is a solid-state relay (SSR) module with SPST-NO (1 Form A) configuration, designed for low-current DC switching applications. This component operates with 120VAC/DC input control voltage and supports load voltages from 3V to 48V at 100mA maximum current. The module features spring terminal connections and DIN rail mounting.

The 2904694 is classified as obsolete. Identifying suitable substitute parts is necessary to maintain system functionality and ensure continued availability for replacement and new designs.

Substiute Parts

2904694

Phoenix ContactIn Stock: 10492904694 Datasheet

Current PartRFQ

2908174

Phoenix ContactIn Stock: 7532908174 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2904694 is determined by the following critical parameters:

• Circuit configuration must remain SPST-NO (1 Form A)
• Output type must be DC
• Input voltage must be 120VAC/DC
• Mounting type must be DIN Rail
• Termination style must be Spring Terminal
• Package type must be Module
• Series must be PLC-OPT

The substitute part 2908174 shares the same circuit topology, input voltage specification, mounting method, termination style, package type, and series designation. However, it operates within a reduced load voltage range (5V ~ 30V) and supports a lower maximum load current (3mA) compared to the original part.

Parameter Comparison

Engineering Selection Recommendations

The 2908174 is an active product within the same PLC-OPT series and maintains full compatibility with the control interface (120VAC/DC input) and mechanical installation requirements (DIN rail mounting with spring terminals). Both parts are RoHS compliant.

Selection of the 2908174 as a substitute is appropriate for applications where the load current requirement does not exceed 3mA and the load voltage remains within the 5V to 30V range. Applications requiring the full 100mA current capacity or load voltages below 5V or above 30V cannot use this substitute without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the 2908174 directly replace the 2904694 in all applications?

A: No. The 2908174 has reduced current capacity (3mA versus 100mA) and a narrower load voltage range (5V ~ 30V versus 3V ~ 48V). Substitution is valid only when application requirements fall within these reduced specifications.

Q: What are the key compatibility factors between these parts?

A: Both parts share identical control input voltage (120VAC/DC), circuit configuration (SPST-NO), mounting method (DIN rail), termination style (spring terminal), and package type (module). These factors ensure mechanical and electrical interface compatibility.

Q: Why is the 2904694 listed as obsolete?

A: Product status reflects manufacturer lifecycle decisions. The 2908174, as an active product in the same series, represents the current offering for similar applications.

Q: Are there any compliance differences between the two parts?

A: Both parts are RoHS compliant with MSL rating of 1 (Unlimited). No compliance barriers exist for substitution within the specified electrical parameters.

Q: What should be verified before implementing the 2908174 as a substitute?

A: Confirm that the application load current does not exceed 3mA and that the load voltage operates within the 5V to 30V range. Verify that the control circuit provides 120VAC/DC input voltage.