Phoenix Contact 2987105 General Purpose Relay DPDT 24VDC

Part Overview

The Phoenix Contact 2987105 is a general purpose relay with DPDT (Double Pole Double Throw) contact configuration, rated for 6A at 24VDC coil voltage. This relay is designed for DIN rail mounting and features a lighted indicator with integrated socket. The part is currently listed as obsolete, making identification of suitable substitute components essential for system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

2987105

Phoenix ContactIn Stock: 7612987105 Datasheet

Current PartRFQ

2900346

Phoenix ContactIn Stock: 8552900346 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2987105 is based on the following critical parameters that must remain consistent:

• Contact form configuration: DPDT (2 Form C) contact arrangement
• Current rating: 6A contact capacity
• Mounting interface: DIN rail compatibility
• Termination method: Spring terminal connection
• Coil type: Non-latching operation
• Contact material: Silver Nickel composition
• Operating temperature range: -40°C to 70°C
• Switching voltage capability: 250VAC/250VDC maximum

The Phoenix Contact 2900346 qualifies as a direct substitute based on these parameters. While the coil voltage differs (12VDC versus 24VDC), this represents a functional alternative for applications where the lower coil voltage is compatible with the control circuit design. Both relays maintain identical contact specifications, mounting configuration, and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900346 is the designated substitute for the obsolete 2987105 relay. Selection of this alternative is supported by the following factors:

• The 2900346 maintains active product status, ensuring continued availability and supply chain reliability
• Both parts comply with RoHS requirements; the substitute meets the more recent ROHS3 standard
• Identical contact specifications (DPDT, 6A, 250VAC/250VDC) ensure functional equivalence in load switching applications
• DIN rail mounting and spring terminal configuration provide direct mechanical and electrical compatibility
• The 12VDC coil voltage of the substitute requires verification against the control circuit design; applications currently using 24VDC coil supply must accommodate this voltage difference through circuit modification or alternative power sourcing

The substitute part is suitable for new installations and replacement scenarios where coil voltage compatibility can be established.

Frequently Asked Questions (FAQ)

Q: Can the 2900346 directly replace the 2987105 without any circuit modifications?

A: Direct mechanical and electrical replacement is possible for the load-switching function. However, the coil voltage difference (12VDC versus 24VDC) requires that the control circuit supply voltage be compatible with the substitute part's requirements. If the existing control circuit provides 24VDC, a separate 12VDC supply or voltage conversion must be implemented.

Q: Are the contact ratings identical between these two relays?

A: Yes. Both relays are rated for 6A continuous current with 250VAC and 250VDC maximum switching voltage. Contact form, material composition (Silver Nickel), and environmental operating range are identical.

Q: What is the significance of the different coil current values (12 mA versus 20 mA)?

A: The coil current difference reflects the resistance characteristics of each relay's coil winding. The 2900346 requires higher coil current (20 mA) at 12VDC compared to the 2987105 at 24VDC (12 mA). The control circuit must be capable of supplying the substitute part's coil current requirement.

Q: Does the faster operate time of the 2900346 (5 ms versus 8 ms) affect compatibility?

A: The faster operate time of the substitute part does not create incompatibility. In most applications, faster relay response is beneficial. However, if the application timing is specifically designed around the 8 ms operate time of the original part, the faster response should be evaluated for any potential system-level effects.

Q: Are there packaging differences between these parts?

A: The 2987105 is listed with standard packaging, while the 2900346 is supplied in bulk packaging. Both parts use identical DIN rail mounting and spring terminal interfaces.

Q: What compliance certifications apply to the substitute part?

A: The 2900346 is ROHS3 compliant and REACH affected. These certifications meet current environmental and regulatory requirements for electronic component distribution and use in the European Union and equivalent markets.