Phoenix Contact 2903284 General Purpose Relay - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2903284 is a general purpose relay featuring a 3PST-NO (3 Form A) contact configuration with a 24VDC coil, rated for 10A switching capacity. This DIN rail-mounted relay is designed for industrial control applications requiring reliable switching of AC and DC loads. The part is currently obsolete, making identification of suitable substitute components essential for system maintenance and new designs requiring equivalent functionality.

Substiute Parts

2903284

Phoenix ContactIn Stock: 7442903284 Datasheet

Current PartRFQ

2903288

Phoenix ContactIn Stock: 11502903288 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2903284 is determined by the following critical parameters:

• Coil Voltage: Must be 24VDC to maintain compatibility with existing control circuits
• Mounting Type: DIN rail mounting is required for panel integration
• Contact Rating: 10A minimum capacity for load switching
• Switching Voltage: 440VAC/250VDC maximum rating ensures safe operation across AC and DC applications
• Termination Style: Screw terminal connection for reliable wiring integration
• Series Compatibility: Phoenix Contact RIF series maintains mechanical and electrical consistency

The Phoenix Contact 2903288 qualifies as a substitute based on matching these core parameters, with the distinction that it provides 3PDT (3 Form C) contact configuration instead of 3PST-NO (3 Form A).

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903288 is available as an active product with current manufacturing support, whereas the 2903284 is obsolete. Both relays maintain identical coil voltage, contact rating, switching voltage, and operating temperature specifications. The 2903288 provides enhanced compliance status with ROHS3 certification and REACH compliance documentation.

The primary functional difference is the contact configuration: the 2903284 provides 3PST-NO (3 Form A) contacts, while the 2903288 provides 3PDT (3 Form C) contacts. This distinction affects circuit design requirements. The 2903288 also demonstrates lower coil current consumption (56 mA versus 70 mA), reducing control circuit power demands.

Selection of the 2903288 as a substitute is appropriate when the application can accommodate the 3PDT contact configuration. If the circuit design specifically requires 3PST-NO functionality, alternative substitutes within the Phoenix Contact RIF series should be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903288 directly replace the 2903284 in existing installations?

A: Direct replacement is possible if the circuit design accommodates 3PDT (3 Form C) contact functionality. The 2903288 provides additional switching capability compared to the 3PST-NO configuration of the 2903284. Verify that the application does not require the specific 3PST-NO contact form before substitution.

Q: What is the difference between 3PST-NO and 3PDT contact configurations?

A: 3PST-NO (3 Form A) provides three independent normally-open contacts, each capable of closing a circuit. 3PDT (3 Form C) provides three changeover contacts, each with both normally-open and normally-closed positions. The 3PDT configuration offers greater switching flexibility for complex control logic.

Q: Are the coil voltage and current specifications compatible between these relays?

A: Both relays operate on 24VDC coil voltage. The 2903288 requires 56 mA coil current compared to 70 mA for the 2903284. This lower current requirement in the substitute part reduces control circuit power consumption and may improve compatibility with lower-capacity control power supplies.

Q: What compliance certifications apply to the substitute part?

A: The Phoenix Contact 2903288 is ROHS3 compliant and REACH affected. The original 2903284 is RoHS compliant. Both parts carry EAR99 ECCN classification and HTSUS code 8536.41.0050.

Q: Are packaging differences significant for system integration?

A: The 2903284 is packaged with socket inclusion, while the 2903288 is supplied in bulk packaging. Both utilize screw terminal termination and DIN rail mounting, ensuring mechanical compatibility in panel installations.