Phoenix Contact 2834656 General Purpose Relay DPDT 24VAC - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2834656 is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 10A at 24VAC coil voltage. This relay is designed for DIN rail mounting with screw terminal connections and includes integrated features such as a lighted indicator, socket, and varistor protection.

The 2834656 has reached obsolete product status. Identifying equivalent substitute parts ensures continued availability for maintenance, repair, and new system designs where this relay specification remains applicable.

Substiute Parts

2834656

Phoenix ContactIn Stock: 10992834656 Datasheet

Current PartRFQ

2903323

Phoenix ContactIn Stock: 7812903323 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2834656 is determined by the following critical parameters that must remain consistent or compatible:

• Coil Voltage: 24VAC (primary control signal requirement)
• Contact Form: DPDT (2 Form C) (functional switching configuration)
• Mounting Type: DIN Rail (physical installation requirement)
• Termination Style: Screw Terminal (connection interface)
• Coil Type: Non Latching (operational behavior)
• Contact Material: Silver or Silver Nickel (electrical performance)
• RoHS Compliance: Required for regulatory alignment

The substitute part Phoenix Contact 2903323 maintains these core parameters while operating in an active product status. Variations in contact current rating, coil current, timing characteristics, and operating temperature range are acceptable within the bounds of the application requirements, provided the substitute part meets or exceeds the minimum functional specifications.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903323 is an active product substitute for the obsolete 2834656. Both relays maintain identical coil voltage (24VAC), contact form (DPDT), mounting configuration (DIN Rail), and termination interface (Screw Terminal). Both are RoHS compliant and include integrated features (lighted indicator, socket, varistor).

The 2903323 operates with a reduced contact current rating of 8.5A compared to the 2834656's 10A rating. This difference requires verification against the specific load requirements of the application. The substitute part exhibits slightly longer operate and release times (15ms and 20ms respectively versus 10ms and 12ms), which may impact timing-sensitive applications.

The 2903323 supports an extended low-temperature operating range (-40°C versus -25°C), while the upper temperature limit is reduced to 50°C compared to 60°C. Contact material differs (Silver Nickel versus Silver), which affects electrical performance characteristics and contact longevity under specific load conditions.

Selection of the 2903323 as a substitute is appropriate when the application load does not exceed 8.5A, timing tolerances accommodate the longer switching intervals, and the operating temperature range aligns with -40°C to 50°C boundaries.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903323 directly replace the 2834656 in all applications?

A: Direct replacement requires verification of three critical parameters: (1) load current must not exceed 8.5A, (2) application timing must tolerate 15ms operate and 20ms release times, and (3) operating temperature must remain within -40°C to 50°C. If all three conditions are met, the 2903323 is functionally compatible.

Q: What is the significance of the contact current rating difference (10A versus 8.5A)?

A: The contact current rating defines the maximum continuous current the relay contacts can safely switch. The 2903323's 8.5A rating is lower than the 2834656's 10A rating. Applications requiring currents between 8.5A and 10A cannot use the 2903323 as a substitute.

Q: How do the timing differences affect relay performance?

A: The 2834656 operates in 10ms and releases in 12ms. The 2903323 requires 15ms to operate and 20ms to release. In applications with strict timing requirements or high-frequency switching, these differences may impact system performance. Timing-sensitive circuits require evaluation before substitution.

Q: Are the contact materials interchangeable?

A: The 2834656 uses Silver (Ag) contacts while the 2903323 uses Silver Nickel (AgNi). Both materials are suitable for general purpose relay applications. Silver Nickel offers enhanced wear resistance and is preferred for higher switching frequencies or more demanding electrical loads.

Q: What is the impact of the operating temperature range difference?

A: The 2834656 operates from -25°C to 60°C. The 2903323 operates from -40°C to 50°C. The substitute provides better low-temperature performance but has a lower maximum temperature limit. Applications operating above 50°C cannot use the 2903323.

Q: Do both relays support the same mounting and termination?

A: Yes. Both the 2834656 and 2903323 are DIN rail mounted with screw terminal connections, ensuring identical physical installation and wiring interface.

Q: Are both relays RoHS compliant?

A: Yes. Both the 2834656 and 2903323 are RoHS compliant, meeting regulatory requirements for hazardous substance restrictions.