Phoenix Contact 2966579 Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2966579 is a general purpose relay with SPDT (1 Form C) contact configuration, rated for 50 mA at 12VDC coil voltage. This relay is designed for DIN rail mounting and features a non-latching coil type with integrated diode and lighted indicator. The part is currently obsolete, making identification of compatible substitute components essential for system maintenance and new designs requiring equivalent functionality.

Substiute Parts

2966579

Phoenix ContactIn Stock: 11712966579 Datasheet

Current PartRFQ

2900309

Phoenix ContactIn Stock: 6892900309 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 2966579 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Contact form: SPDT (1 Form C)
• Contact rating: 50 mA minimum
• Mounting type: DIN Rail
• Coil type: Non Latching
• Switching voltage capability: 30VAC, 36VDC minimum
• Operating temperature range: -40°C ~ 60°C minimum
• Termination style: Spring Terminal
• RoHS compliance status

Flexible Parameters (Allowing Substitution):

• Coil voltage: Different voltage ratings are acceptable if the relay meets all other electrical and mechanical requirements
• Series designation: Different series within Phoenix Contact product line
• Product status: Active status preferred for new applications
• Coil current: May vary based on different coil voltage design

The Phoenix Contact 2900309 qualifies as a direct substitute based on matching contact form, current rating, mounting configuration, coil type, switching voltage, temperature range, termination style, and RoHS compliance. The primary difference is the coil voltage specification (60VDC vs. 12VDC), which requires circuit-level evaluation for application compatibility.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900309 is an active product substitute for the obsolete 2966579. Both relays maintain identical contact switching specifications, operating temperature range, and RoHS compliance status. The 2900309 offers the advantage of current product availability and active manufacturer support.

The primary design consideration is the coil voltage difference: 12VDC (2966579) versus 60VDC (2900309). This difference requires evaluation at the circuit level to determine compatibility with existing power supply and control circuitry. The 2900309 exhibits lower coil current consumption (4.8 mA vs. 15.3 mA), which may provide benefits in power-constrained applications if the 60VDC supply is available.

Both relays share identical contact form, current rating, switching voltage capability, mounting configuration, and termination style, confirming functional equivalence for the relay switching function itself.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2900309 directly replace the 2966579 in existing installations?

A: Direct mechanical and electrical replacement is possible only if the control circuit supplies 60VDC to the relay coil. If the existing circuit provides 12VDC, the 2900309 will not operate. Circuit modification or a different substitute with 12VDC coil voltage would be required.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution requires matching contact form (SPDT), contact current rating (50 mA), mounting type (DIN Rail), coil type (Non Latching), switching voltage capability (30VAC/36VDC), operating temperature range (-40°C to 60°C), and termination style (Spring Terminal). Coil voltage may differ if the application circuit is modified accordingly.

Q: Why is the 2900309 considered a substitute despite different coil voltage?

A: The 2900309 matches all critical switching and mechanical parameters. The coil voltage difference is a circuit-level design parameter rather than a functional limitation of the relay itself. Applications with 60VDC availability can implement this substitute without modification to the relay's switching characteristics.

Q: What is the packaging difference between these parts?

A: The 2966579 is listed with standard packaging, while the 2900309 is supplied in bulk packaging. Both use identical DIN rail mounting and spring terminal configurations.

Q: Are both relays RoHS compliant?

A: Yes, both the 2966579 and 2900309 are RoHS compliant with MSL rating of 1 (Unlimited moisture sensitivity level).