Phoenix Contact 2903282 General Purpose Relay - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2903282 is a general purpose relay featuring a 3PST-NO (3 Form A) contact configuration with 230VAC coil voltage and 8A contact rating. This relay is designed for DIN rail mounting applications requiring switching of up to 440VAC or 250VDC loads. The product is currently classified as obsolete, making identification of suitable substitute components essential for system maintenance and new design implementations.

Substiute Parts

2903282

Phoenix ContactIn Stock: 12012903282 Datasheet

Current PartRFQ

2903285

Phoenix ContactIn Stock: 11382903285 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2903282 is determined by the following critical parameters:

• Coil Voltage: 230VAC (must match exactly for direct replacement without circuit modification)
• Mounting Type: DIN Rail (physical form factor requirement)
• Contact Rating: 8A minimum (load switching capacity)
• Switching Voltage: 440VAC, 250VDC maximum (electrical stress tolerance)
• Coil Current: 14 mA (control circuit compatibility)
• Contact Form Compatibility: 3PST-NO or 3PDT configurations (functional equivalence for switching applications)
• Operating Temperature: -40°C ~ 40°C (environmental operating range)
• Contact Material: Silver Nickel (AgNi) (electrical performance and reliability)

The Phoenix Contact 2903285 qualifies as a substitute based on matching all critical parameters while offering an enhanced contact configuration (3PDT vs. 3PST-NO), providing additional switching flexibility for applications requiring changeover contacts.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903285 is the designated substitute for the obsolete 2903282. Both components share identical electrical specifications for coil voltage, contact rating, switching voltage, and coil current, ensuring functional compatibility in existing circuit designs.

The 2903285 offers the advantage of active product status, ensuring continued availability and supply chain reliability. The upgrade to ROHS3 compliance provides enhanced environmental and regulatory alignment compared to the RoHS Compliant status of the original part.

The primary functional difference is the contact configuration: the 2903285 provides 3PDT (3 Form C) changeover contacts versus the 3PST-NO (3 Form A) contacts of the 2903282. This enhancement allows the substitute to perform both make and break switching functions on each pole, providing greater application flexibility while maintaining backward compatibility for applications requiring only make contacts.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903285 directly replace the 2903282 in existing installations?

A: Yes. Both relays share identical coil voltage (230VAC), contact rating (8A), switching voltage (440VAC/250VDC), coil current (14 mA), and operating temperature range (-40°C ~ 40°C). The 2903285 provides additional contact functionality (3PDT vs. 3PST-NO) without compromising compatibility with circuits designed for the original part.

Q: What is the significance of the contact form difference between these parts?

A: The 2903282 features 3PST-NO (3 Form A) contacts, providing three independent make contacts. The 2903285 features 3PDT (3 Form C) contacts, providing three changeover contacts with both make and break functionality per pole. Applications requiring only make contacts can utilize the 2903285 by connecting only the make terminals, while applications requiring changeover capability gain this functionality with the substitute.

Q: Are there packaging differences between these parts?

A: The 2903282 is supplied with standard packaging, while the 2903285 is supplied in bulk packaging. Both are DIN rail mounted components with identical physical form factors and screw terminal termination.

Q: What compliance certifications apply to these relays?

A: The 2903282 holds RoHS Compliant certification. The 2903285 holds ROHS3 Compliant certification and is REACH Affected. Both meet the electrical and environmental standards required for industrial control applications.

Q: Why is the 2903282 classified as obsolete?

A: Product obsolescence reflects Phoenix Contact's lifecycle management. The 2903285 serves as the active replacement, offering equivalent electrical performance with enhanced contact configuration and current compliance certifications.