Phoenix Contact 2942674 General Purpose Relay SPST-NO 24VAC/DC - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2942674 is a general purpose relay with SPST-NO (1 Form A) contact configuration and 24VAC/DC coil voltage. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The relay includes a socket for convenient installation and is RoHS compliant with unlimited moisture sensitivity rating (MSL 1).

Substiute Parts

2942674

Phoenix ContactIn Stock: 9252942674 Datasheet

Current PartRFQ

2900306

Phoenix ContactIn Stock: 22762900306 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2942674 is based on the following critical parameters:

• Coil Voltage Compatibility: The substitute must operate at 24VDC or accept 24VAC/DC input
• Relay Type: General purpose relay classification maintained
• Manufacturer Continuity: Phoenix Contact recommended substitute ensures design consistency and supply chain reliability
• Compliance Standards: RoHS compliance required for environmental and regulatory adherence
• Socket Compatibility: Socket inclusion supports existing installation infrastructure

The Phoenix Contact 2900306 is the manufacturer-recommended substitute, providing active product status while maintaining general purpose relay functionality within the Phoenix Contact product ecosystem.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900306 is the designated manufacturer-recommended substitute for the obsolete 2942674. Selection of this substitute is supported by:

• Active Product Status: The 2900306 maintains current production and supply availability, eliminating obsolescence risk
• Enhanced Compliance: ROHS3 compliance exceeds the RoHS compliance of the original part, ensuring forward compatibility with evolving regulatory requirements
• Manufacturer Continuity: Both components are Phoenix Contact products, maintaining design consistency and technical support continuity
• Expanded Feature Set: The 2900306 includes a lighted indicator in addition to socket inclusion, providing enhanced operational visibility
• Defined Operating Parameters: The substitute provides specified operating temperature range (-40°C ~ 60°C) and contact rating (50 mA), enabling precise system design validation

Frequently Asked Questions (FAQ)

Q: Can the 2900306 directly replace the 2942674 in existing installations?

A: The 2900306 is the Phoenix Contact manufacturer-recommended substitute. However, the contact form differs (SPDT vs. SPST-NO), requiring verification that the application circuit accommodates the additional contact configuration. The 24VDC coil voltage of the 2900306 is compatible with 24VDC applications; 24VAC applications require circuit evaluation.

Q: What is the significance of the contact form difference between these relays?

A: The 2942674 provides SPST-NO (1 Form A) configuration with a single normally-open contact. The 2900306 provides SPDT (1 Form C) configuration with changeover contacts (one normally-open, one normally-closed). Applications requiring only normally-open switching must be designed to accommodate or ignore the additional contact configuration.

Q: Are there packaging differences between these parts?

A: The 2942674 packaging is listed as unspecified. The 2900306 is supplied in bulk packaging with DIN Rail mounting type, differing from the original part's unspecified mounting configuration.

Q: Does the lighted indicator on the 2900306 affect circuit design?

A: The lighted indicator is an additional feature that does not affect core relay switching functionality. Circuit design remains compatible; the indicator provides operational status visibility without requiring circuit modification.

Q: What compliance certifications apply to both parts?

A: Both parts maintain MSL 1 (Unlimited) moisture sensitivity rating. The 2942674 is RoHS compliant; the 2900306 is ROHS3 compliant, representing an enhanced compliance standard. Both parts carry EAR99 ECCN classification.