Phoenix Contact 2834957 General Purpose Relay DPDT 220VDC - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2834957 is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 10A at 220VDC coil voltage. This socketable relay features a mechanical indicator, test button, and integrated diode protection. The part is currently obsolete, making identification of suitable substitute components essential for system maintenance and component replacement in existing installations.

Substiute Parts

2834957

Phoenix ContactIn Stock: 8062834957 Datasheet

Current PartRFQ

2903665

Phoenix ContactIn Stock: 11652903665 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Phoenix Contact 2903665 qualifies as a direct substitute for the 2834957 based on the following critical parameters:

Matching Parameters:

• Identical contact form: DPDT (2 Form C)
• Identical coil voltage: 220VDC
• Identical mounting type: Socketable
• Identical termination style: Plug In
• Identical relay type: General Purpose
• Identical series: REL-IR
• Identical switching voltage rating: 250VAC, 250VDC - Max
• Identical coil type: Non Latching
• Identical RoHS compliance status

Allowable Variations:

• Contact rating increased from 10A to 12A (higher capacity is acceptable for replacement)
• Coil current increased from 3.6 mA to 4 mA (within acceptable operational variance)
• Operating temperature range adjusted from -55°C ~ 70°C to -40°C ~ 70°C (acceptable for most applications)
• Contact material changed from Silver (Ag) to Silver Nickel (AgNi) (compatible contact material)
• Indicator type changed from Mechanical to Lighted (functional enhancement)
• Product status changed from Obsolete to Active (ensures availability)

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903665 is the appropriate substitute for the obsolete 2834957 based on the following factors:

Compliance & Availability: The 2903665 maintains full RoHS compliance and is currently in active production status with confirmed inventory availability, addressing the obsolescence of the original part.

Electrical Compatibility: Both relays operate at identical 220VDC coil voltage with matching DPDT contact configuration and switching voltage ratings. The increased contact current rating of 12A in the substitute provides enhanced capacity while maintaining backward compatibility with existing circuit designs rated for 10A operation.

Mechanical Compatibility: Socketable mounting and plug-in termination styles are identical, ensuring direct physical replacement without modification to existing relay sockets or wiring harnesses.

Operational Characteristics: Identical operate and release times (13 ms and 14 ms respectively) ensure equivalent switching performance. The operating temperature range adjustment from -55°C to -40°C minimum is acceptable for standard industrial applications.

Contact Material: The upgrade from Silver to Silver Nickel contact material provides improved durability and arc resistance, representing a functional enhancement suitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903665 directly replace the 2834957 in existing installations?

A: Yes. Both relays share identical coil voltage (220VDC), contact form (DPDT), mounting type (socketable), and termination style (plug-in). The 2903665 can be inserted into existing relay sockets without modification.

Q: What is the significance of the increased contact rating from 10A to 12A?

A: The higher current rating in the 2903665 indicates increased contact capacity. This allows the substitute to handle the original 10A design requirement with additional margin. No circuit redesign is required.

Q: Are there temperature range limitations when substituting the 2903665 for the 2834957?

A: The 2903665 operates from -40°C to 70°C, compared to the original -55°C to 70°C range. For applications requiring operation below -40°C, the substitute is not suitable. For standard industrial temperature ranges, this difference is not restrictive.

Q: What is the difference between the mechanical indicator and lighted indicator?

A: The 2834957 features a mechanical indicator for visual relay state confirmation. The 2903665 provides a lighted indicator for the same function. Both serve the same operational purpose with the lighted version offering enhanced visibility in low-light conditions.

Q: Does the change from Silver to Silver Nickel contact material affect circuit performance?

A: No. Silver Nickel is a standard contact material in relay manufacturing that provides equivalent electrical conductivity with improved durability. This represents a material upgrade with no negative impact on circuit operation.

Q: Is the Phoenix Contact 2903665 currently available for procurement?

A: Yes. The 2903665 is in active production status with confirmed inventory availability, making it suitable for immediate component replacement and future procurement.