Phoenix Contact 2902969 SSR Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2902969 is a solid-state relay (SSR) with SPST-NO (1 Form A) configuration, designed for low-current DC switching applications. This component operates with a 5VDC input signal and supports load voltages from 4V to 30V at 50mA maximum current. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

2902969

Phoenix ContactIn Stock: 9052902969 Datasheet

Current PartRFQ

2902973

Phoenix ContactIn Stock: 12632902973 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 2902969 is determined by the following critical parameters:

• Circuit configuration must remain SPST-NO (1 Form A)
• Input voltage must be 5VDC
• Output type must be DC
• Load current rating must support minimum 50mA
• Mounting type must be DIN Rail compatible
• Termination style must be Spring Terminal

The Phoenix Contact 2902973 qualifies as a substitute based on these criteria. The primary difference is the load voltage range specification: the 2902973 operates within 14V to 30V, which represents a narrower operating window compared to the original 4V to 30V range. This substitution is valid for applications where the load voltage remains within the 14V to 30V band.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2902973 is the qualified substitute for the obsolete 2902969 model. Both components share identical electrical specifications for input voltage, output type, circuit configuration, and load current capacity. The 2902973 offers the advantage of active product status, ensuring continued availability and support.

The 2902973 carries ROHS3 compliance and REACH affected status, representing current regulatory alignment. The narrower load voltage range (14V ~ 30V versus 4V ~ 30V) must be evaluated against specific application requirements. If the system operates exclusively within the 14V to 30V window, the 2902973 provides a direct functional replacement. Applications requiring operation below 14V load voltage cannot use the 2902973 as a substitute.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2902973 replace the 2902969 in all applications?

A: The 2902973 is functionally equivalent for applications where load voltage remains between 14V and 30V. If your system requires operation at load voltages below 14V, the 2902973 is not suitable. Verify your load voltage specifications before substitution.

Q: What is the primary difference between these two SSR relays?

A: The load voltage operating range differs. The 2902969 supports 4V to 30V, while the 2902973 supports 14V to 30V. All other electrical and mechanical parameters are identical.

Q: Why is the 2902969 listed as obsolete?

A: The 2902969 has been discontinued by Phoenix Contact. The 2902973 represents the current active product line replacement within the PLC-OPT series.

Q: Are there any compliance differences between these parts?

A: The 2902973 carries ROHS3 compliance and REACH affected status, reflecting current regulatory requirements. The 2902969 is RoHS Compliant. Both maintain MSL rating 1 (Unlimited).

Q: Do both relays use the same mounting and termination methods?

A: Yes. Both components mount on DIN Rail and use Spring Terminal termination, ensuring mechanical compatibility in existing installations.

Q: What load current capacity do these relays support?

A: Both the 2902969 and 2902973 are rated for 50mA maximum load current at their respective voltage ranges.