Phoenix Contact 2903279 General Purpose Relay DPDT 230VAC - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2903279 is a general purpose relay with DPDT (2 Form C) contact configuration, designed for 230VAC coil operation on DIN rail mounting. This relay features a 9A contact rating, lighted indicator, socket inclusion, and varistor protection. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance and replacement applications.

Substiute Parts

2903279

Phoenix ContactIn Stock: 8302903279 Datasheet

Current PartRFQ

2903276

Phoenix ContactIn Stock: 12242903276 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 2903279 is determined by the following critical parameters:

• Coil voltage: 230VAC
• Mounting type: DIN Rail
• Coil current: 14 mA
• Coil type: Non Latching
• Termination style: Spring Terminal
• Contact material: Silver Nickel (AgNi)
• Operating temperature range: -40°C ~ 40°C
• RoHS compliance status

The Phoenix Contact 2903276 shares all mandatory electrical and mechanical parameters with the 2903279. The primary difference is the contact form configuration: the 2903276 provides 3PDT (3 Form C) contacts with an 8A rating, compared to the DPDT (2 Form C) configuration with 9A rating in the original part. Both relays operate within identical coil specifications, switching voltage limits, timing characteristics, and environmental conditions.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2903276 is an active product within the RIF series, providing continuity for applications requiring 230VAC DIN rail relay functionality. Both the 2903279 and 2903276 maintain identical coil specifications, switching characteristics, and environmental operating parameters. The 2903276 offers the advantage of active product status with current manufacturing support and availability.

Selection between these parts depends on circuit requirements: the 2903279 provides two independent Form C contacts at 9A capacity, while the 2903276 provides three independent Form C contacts at 8A capacity. Both relays comply with RoHS requirements and feature identical protective elements and termination methods.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2903276 directly replace the 2903279 in all applications?

A: Direct replacement depends on circuit design. Both relays share identical coil voltage (230VAC), switching voltage limits (440VAC, 250VDC max), timing characteristics (25ms operate, 20ms release), and environmental specifications. The 2903276 provides additional contact capacity (3PDT vs DPDT) but with a lower per-contact current rating (8A vs 9A). Verify that your application can operate within the 8A contact rating and that the additional contact form does not create circuit conflicts.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is established through: coil voltage (230VAC), coil current (14 mA), non-latching coil type, switching voltage limits (440VAC, 250VDC max), contact material (Silver Nickel), and operating temperature range (-40°C to 40°C). Both relays meet these specifications identically.

Q: Are there packaging differences between the 2903279 and 2903276?

A: The 2903279 is supplied in standard packaging, while the 2903276 is available in bulk packaging. Both are DIN rail mounted components with spring terminal connections and socket inclusion.

Q: Does the 2903276 include the same protective features as the 2903279?

A: Yes. Both relays include lighted indicator, socket, and varistor protection. Both are RoHS compliant with identical MSL rating (1 - Unlimited).