Phoenix Contact 2834339 General Purpose Relay SPDT 24V - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2834339 is a general purpose relay with Single Pole Double Throw (SPDT) contact configuration, designed for 24VAC coil operation on DIN rail mounting. This relay provides 12A contact rating at switching voltages up to 250VAC/250VDC and includes integrated features such as a lighted indicator, socket inclusion, and varistor protection.

The 2834339 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement and new installations where this relay specification is required.

Substiute Parts

2834339

Phoenix ContactIn Stock: 10872834339 Datasheet

Current PartRFQ

2903358

Phoenix ContactIn Stock: 10412903358 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2834339 is determined by the following critical parameters:

• Contact Form: SPDT (1 Form C) configuration must be maintained
• Mounting Type: DIN Rail mounting required
• Coil Voltage: 24V supply (VAC or VDC acceptable based on control circuit design)
• Contact Rating: Minimum 11A to 12A current handling capability
• Switching Voltage: 250VAC/250VDC maximum rating
• Termination Style: Screw Terminal connection
• Contact Material: Silver Nickel (AgNi) for electrical performance consistency
• Coil Type: Non Latching operation
• Regulatory Compliance: RoHS compliance required

The Phoenix Contact 2903358 meets these substitution criteria as an active product with equivalent functional specifications and compatible mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903358 is the identified substitute for the obsolete 2834339. Selection of the 2903358 is supported by the following factors:

Product Status: The 2903358 is an active product with current manufacturing and supply chain availability, whereas the 2834339 is obsolete and subject to inventory depletion.

Regulatory Compliance: Both parts maintain RoHS compliance. The 2903358 carries ROHS3 Compliant status and is REACH Affected, meeting current regulatory requirements for electronic components in EU and international markets.

Functional Equivalence: Both relays provide SPDT contact configuration, DIN rail mounting, screw terminal termination, and Silver Nickel contact material. The contact rating of 11A on the 2903358 is within acceptable tolerance of the 12A rating on the 2834339 for most general purpose applications.

Operational Differences: The primary difference is coil voltage specification: 24VAC for the 2834339 versus 24VDC for the 2903358. System integration requires verification that the control circuit can accommodate 24VDC coil operation. The 2903358 exhibits improved operating temperature range (-40°C ~ 70°C versus -25°C ~ 60°C) and reduced coil current draw (18 mA versus 26 mA), providing enhanced performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903358 directly replace the 2834339 in existing installations?

A: Direct replacement is possible if the control circuit supplies 24VDC to the relay coil. The 2834339 requires 24VAC, while the 2903358 requires 24VDC. Verify coil voltage availability before substitution. Both relays share identical DIN rail mounting, screw terminal connection, and SPDT contact configuration.

Q: What is the significance of the contact rating difference (12A versus 11A)?

A: The 2834339 provides 12A contact rating while the 2903358 provides 11A. For applications requiring the full 12A capacity, the 2903358 may not be suitable. For applications operating below 11A, the 2903358 is functionally equivalent.

Q: Are there packaging differences between these parts?

A: The 2834339 is specified with "-" packaging notation, while the 2903358 is supplied in Bulk packaging. Both are DIN rail mounted relays with identical form factors and mounting requirements.

Q: Why does the 2903358 have lower coil current than the 2834339?

A: The 2903358 operates on 24VDC with a coil resistance of 1.33 kOhms, resulting in 18 mA coil current. The 2834339 operates on 24VAC with 26 mA coil current. The difference reflects the distinct coil design for AC versus DC operation. Lower coil current on the 2903358 reduces power consumption and heat generation.

Q: What features are included on each relay?

A: The 2834339 includes lighted indicator, socket inclusion, and varistor protection. The 2903358 includes diode, lighted indicator, and socket inclusion. Both relays provide socket-based installation for DIN rail systems.

Q: Is the 2903358 suitable for applications requiring the full -25°C to 60°C temperature range of the 2834339?

A: The 2903358 operates across -40°C to 70°C, which encompasses and exceeds the -25°C to 60°C range of the 2834339. The 2903358 is suitable for applications within the original temperature specification and provides extended capability at lower temperatures.