Phoenix Contact 2834407 General Purpose Relay SPDT 24VDC - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2834407 is a general purpose relay with Single Pole Double Throw (SPDT) contact configuration, designed for 24VDC coil operation on DIN rail mounting. This relay features a 10A contact rating, integrated diode, lighted indicator, and socket inclusion for modular installation. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

2834407

Phoenix ContactIn Stock: 11892834407 Datasheet

Current PartRFQ

2903342

Phoenix ContactIn Stock: 10862903342 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2834407 is determined by the following critical parameters that must remain consistent:

• Coil Voltage: 24VDC (non-negotiable for direct circuit compatibility)
• Contact Form: SPDT (1 Form C) configuration (functional requirement for switching logic)
• Mounting Type: DIN Rail (mechanical compatibility with existing installations)
• Termination Style: Spring Terminal (connection interface compatibility)
• Contact Material: Silver Nickel (AgNi) (electrical performance and reliability)
• Coil Type: Non Latching (operational behavior requirement)

Parameters that may vary within acceptable ranges for substitution:

• Contact Rating (Current): Substitute must equal or exceed 10A minimum
• Switching Voltage: Must support 250VAC, 250VDC maximum or higher
• Coil Current: Minor variations acceptable (18-19 mA range)
• Operating Temperature Range: Substitute must cover or exceed the original range
• Operate/Release Time: Timing within 8-10 ms acceptable for general purpose applications

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903342 is a direct functional substitute for the obsolete 2834407. Both relays maintain identical electrical specifications for coil voltage, contact configuration, and switching characteristics. The 2903342 offers the following advantages:

• Active Product Status: The 2903342 is currently in active production, ensuring long-term availability and supply chain continuity compared to the obsolete 2834407.
• Enhanced Compliance: The 2903342 meets ROHS3 compliance and is REACH affected, representing current regulatory standards. The original 2834407 meets RoHS compliance.
• Improved Current Rating: The 2903342 provides 11A contact rating versus 10A, offering additional margin for current-carrying capacity.
• Extended Operating Temperature: The 2903342 operates across -40°C to 70°C, exceeding the original -25°C to 60°C range, providing broader environmental compatibility.
• Reduced Coil Current: The 2903342 draws 18 mA versus 19 mA, resulting in marginally lower power consumption.

Both relays share identical mechanical mounting, termination, and feature sets, enabling direct replacement without circuit redesign or installation modification.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903342 directly replace the 2834407 in existing installations?

A: Yes. Both relays share identical coil voltage (24VDC), contact configuration (SPDT), mounting type (DIN Rail), termination style (Spring Terminal), and feature sets. The 2903342 is a direct functional substitute requiring no circuit or installation modifications.

Q: What is the significance of the higher 11A current rating on the 2903342 compared to the 10A rating on the 2834407?

A: The 11A rating on the 2903342 provides additional safety margin for current-carrying capacity. If the original circuit operates at or near 10A, the 2903342 offers improved reliability. If the circuit operates below 10A, both relays perform identically.

Q: Does the extended operating temperature range of the 2903342 (-40°C to 70°C versus -25°C to 60°C) affect compatibility?

A: No. The extended range on the 2903342 is a performance enhancement. If the original installation operates within -25°C to 60°C, the 2903342 remains fully compatible. The broader range provides additional flexibility for applications with more extreme environmental conditions.

Q: Are there packaging differences between the 2834407 and 2903342?

A: The 2834407 is listed with "-" packaging designation, while the 2903342 is supplied in Bulk packaging. Both relays are DIN rail mounted with identical mechanical interfaces. Packaging designation refers to distribution format, not physical relay construction.

Q: What is the impact of the 1 mA difference in coil current (19 mA versus 18 mA)?

A: The 1 mA difference is negligible for circuit design purposes. Both values fall within standard control circuit tolerances. The 2903342's lower coil current represents a minor efficiency improvement with no functional impact on substitution compatibility.

Q: Why is the 2834407 listed as obsolete?

A: Product obsolescence typically results from manufacturer discontinuation decisions based on market demand, design evolution, or series consolidation. The 2903342 from the active RIF series represents Phoenix Contact's current general purpose relay offering for this voltage and contact configuration.

Q: Are the RoHS compliance differences (RoHS versus ROHS3) significant for substitution?

A: No. ROHS3 compliance represents a newer regulatory standard that supersedes RoHS compliance. The 2903342 meets current environmental and hazardous substance restrictions. Both relays are suitable for applications requiring RoHS compliance.