Phoenix Contact 2987121 General Purpose Relay DPDT 72VDC - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2987121 is a general purpose relay with DPDT (Double Pole Double Throw) contact configuration, rated for 6A at 72VDC coil voltage. This relay is designed for DIN rail mounting and features a lighted indicator for operational status monitoring. The 2987121 is classified as obsolete, making identification of suitable substitute components essential for system maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

2987121

Phoenix ContactIn Stock: 10422987121 Datasheet

Current PartRFQ

2900347

Phoenix ContactIn Stock: 10362900347 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2987121 is determined by strict equivalence across the following critical parameters:

• Coil voltage: 72VDC (exact match required)
• Contact configuration: DPDT (2 Form C)
• Contact current rating: 6 A minimum
• Switching voltage capability: 250VAC, 250VDC minimum
• Mounting interface: DIN Rail
• Coil type: Non Latching
• Operating temperature range: -40°C to 70°C minimum
• Termination style: Spring Terminal

The Phoenix Contact 2900347 satisfies all substitution criteria. This part maintains identical electrical specifications while offering enhanced features and active product status, making it a direct functional equivalent for the obsolete 2987121.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900347 is the direct substitute for the obsolete 2987121. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The 2900347 offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance provides enhanced environmental regulatory alignment
• REACH affected status indicates full regulatory documentation
• Additional integrated features (diode, socket included) provide enhanced functionality without compromising core relay operation
• Identical DIN rail mounting and spring terminal interface ensures mechanical compatibility

Selection of the 2900347 eliminates obsolescence risk while maintaining full functional equivalence with the original 2987121 specification.

Frequently Asked Questions (FAQ)

Q: Can the 2900347 directly replace the 2987121 in existing installations?

A: Yes. Both relays share identical coil voltage (72VDC), contact configuration (DPDT), current rating (6A), switching voltage (250VAC/250VDC), timing characteristics (5ms operate, 11ms release), and DIN rail mounting interface. Spring terminal connections are identical.

Q: What is the primary reason for substitution?

A: The 2987121 is classified as obsolete. The 2900347 is an active product from the same manufacturer with identical electrical specifications, ensuring continued availability and supply chain reliability.

Q: Are there packaging differences between these parts?

A: The 2987121 is packaged as individual units, while the 2900347 is supplied in bulk packaging. This does not affect electrical or mechanical performance.

Q: Does the 2900347 include additional features?

A: The 2900347 includes integrated diode protection and socket mounting capability in addition to the lighted indicator present on the 2987121. These features enhance functionality without altering core relay operation.

Q: Are both relays RoHS compliant?

A: Yes. The 2987121 is RoHS compliant. The 2900347 meets the enhanced ROHS3 standard, providing superior environmental regulatory alignment.

Q: What is the operating temperature range for both relays?

A: Both the 2987121 and 2900347 operate across the identical temperature range of -40°C to 70°C.