Phoenix Contact 2903297 General Purpose Relay DPDT 24VDC

Part Overview

The Phoenix Contact 2903297 is a general purpose relay with DPDT (2 Form C) contact configuration, designed for 24VDC coil operation on DIN rail mounting. This part is classified as obsolete, making identification of suitable alternatives necessary for ongoing system maintenance and new designs. The relay features a 10A contact rating, integrated diode, lighted indicator, and socket inclusion for flexible installation approaches.

Substiute Parts

2903297

Phoenix ContactIn Stock: 8162903297 Datasheet

Current PartRFQ

2903294

Phoenix ContactIn Stock: 9592903294 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2903297 is constrained by the following critical parameters:

• Coil voltage must remain 24VDC to maintain circuit compatibility
• Mounting type must be DIN rail to ensure mechanical fit within existing enclosures
• Coil current of 60 mA establishes the power supply requirement
• Contact material (Silver Nickel) and termination style (Spring Terminal) define electrical and mechanical interfaces
• Operating temperature range of -40°C to 60°C must be maintained or exceeded
• RoHS compliance status must be equivalent or superior

The Phoenix Contact 2903294 is identified as a substitute part within the same RIF series. However, this substitution involves a contact form change from DPDT (2 Form C) to 3PDT (3 Form C), which alters the number of independent switching circuits from two to three. The contact current rating decreases from 10A to 8.5A. These differences require circuit-level evaluation to determine functional equivalence in specific applications.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903294 is an active product within the same RIF series, providing improved regulatory compliance through ROHS3 certification compared to the RoHS Compliant status of the 2903297. Both relays maintain identical coil voltage, coil current, switching voltage, operating temperature range, contact material, and termination style specifications.

Substitution feasibility depends on application-specific requirements regarding contact form and current rating. The 2903294 provides three independent Form C contacts versus two in the 2903297, and operates at 8.5A maximum contact current versus 10A. Applications requiring exactly two Form C contacts at 10A current rating cannot be directly substituted without circuit redesign. Applications utilizing only two of the three available contacts and operating at or below 8.5A per contact can accommodate the 2903294 as a functional equivalent.

Frequently Asked Questions (FAQ)

Q: Can the 2903294 directly replace the 2903297 in existing installations?

A: Direct replacement requires verification that the application uses only two switching circuits and operates at contact currents not exceeding 8.5A. The 2903294 provides an additional third Form C contact, which does not prevent operation in two-contact applications but must be accounted for in wiring and control logic.

Q: Are the coil specifications identical between these relays?

A: Yes. Both relays operate on 24VDC coil voltage with 60mA coil current, ensuring compatibility with existing power supply and control circuits.

Q: What is the significance of the contact form difference?

A: The 2903297 provides DPDT (2 Form C) configuration with two independent double-throw switches. The 2903294 provides 3PDT (3 Form C) configuration with three independent double-throw switches. Applications requiring exactly two switching circuits must evaluate whether the additional contact can be left unused or if circuit redesign is necessary.

Q: How do the current ratings affect substitution?

A: The 2903297 is rated for 10A maximum contact current, while the 2903294 is rated for 8.5A. Applications operating at currents between 8.5A and 10A cannot use the 2903294 without exceeding its contact rating specification.

Q: Are mounting and termination specifications compatible?

A: Yes. Both relays use DIN rail mounting and spring terminal termination, ensuring mechanical and electrical interface compatibility within the same enclosure and control panel designs.

Q: What is the difference in RoHS compliance status?

A: The 2903297 carries RoHS Compliant certification, while the 2903294 carries ROHS3 Compliant certification. ROHS3 represents an updated compliance standard and does not prevent use of either relay in RoHS-regulated applications.