Phoenix Contact 2912581 General Purpose Relay DPDT 24V - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2912581 is a general purpose relay with DPDT (Double Pole Double Throw) contact configuration, rated for 6A at 24VAC/DC coil voltage. This relay is designed for DIN rail mounting with spring terminal connections and includes a lighted indicator feature. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance and new designs requiring equivalent functionality.

Substiute Parts

2912581

Phoenix ContactIn Stock: 12142912581 Datasheet

Current PartRFQ

2900339

Phoenix ContactIn Stock: 10442900339 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2912581 is determined by the following critical parameters that must remain consistent:

• Coil Voltage: 24VAC/DC (non-negotiable for direct replacement)
• Contact Form: DPDT (2 Form C) configuration
• Mounting Type: DIN Rail
• Coil Current: 17.5 mA
• Coil Type: Non Latching
• Termination Style: Spring Terminal
• Operating Temperature Range: -40°C ~ 60°C
• Contact Material: Silver Nickel (AgNi), Gold (Au)

The Phoenix Contact 2900339 qualifies as a substitute component because it maintains all critical coil and mechanical parameters. However, the contact rating differs: the 2900339 is rated for 50 mA maximum switching current, compared to the 6 A rating of the 2912581. This difference requires application-level evaluation based on actual load requirements.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900339 is available as an active product from the manufacturer, whereas the 2912581 is obsolete. Both components comply with RoHS requirements, with the 2900339 meeting the more recent ROHS3 standard. The 2900339 also carries REACH compliance designation.

Selection between these components depends on load current requirements. The 2912581 supports 6 A switching current at 250VAC/250VDC maximum, while the 2900339 is limited to 50 mA at 30VAC/36VDC maximum. Applications requiring the higher current capacity of the 2912581 cannot use the 2900339 as a direct substitute. For applications with load currents below 50 mA, the 2900339 provides an active, compliant alternative with identical coil characteristics and mechanical form factor.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2900339 directly replace the 2912581 in all applications?

A: No. While both relays share identical coil voltage, contact form, mounting type, and timing characteristics, the 2900339 has a significantly lower contact current rating (50 mA versus 6 A). Substitution is only valid for applications where the actual load current does not exceed 50 mA.

Q: What is the primary reason for seeking a substitute for the 2912581?

A: The 2912581 is obsolete. The 2900339 is an active product from Phoenix Contact with equivalent coil and mechanical specifications, making it suitable for new designs and maintenance applications where load current requirements are compatible.

Q: Are the switching voltage ratings compatible between these relays?

A: No. The 2912581 supports 250VAC and 250VDC maximum switching voltage, while the 2900339 is limited to 30VAC and 36VDC maximum. Applications requiring higher switching voltages must use the 2912581 or identify alternative components with higher voltage ratings.

Q: Do both relays use the same termination method?

A: Yes. Both the 2912581 and 2900339 use spring terminal connections for DIN rail mounting, ensuring mechanical compatibility in existing installations.

Q: What compliance certifications apply to the 2900339?

A: The 2900339 is ROHS3 compliant and REACH affected. The 2912581 is RoHS compliant. Both meet environmental regulatory requirements for their respective product generations.