Phoenix Contact 2966566 Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2966566 is a general purpose relay with SPDT (1 Form C) contact configuration, rated for 50 mA at 48VDC coil voltage. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The relay features a DIN rail mounting format with spring terminal connections, lighted indicator, and integrated socket.

Substiute Parts

2966566

Phoenix ContactIn Stock: 9152966566 Datasheet

Current PartRFQ

2900308

Phoenix ContactIn Stock: 11762900308 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 2966566 is based on electrical and mechanical parameter alignment within the general purpose relay category. The following parameters define acceptable substitutes:

• Coil voltage: 48VDC (exact match required)
• Contact form: SPDT (1 Form C) (exact match required)
• Contact rating: 50 mA (exact match required)
• Switching voltage: 30VAC, 36VDC - Max (exact match required)
• Coil current: 9.2 mA (exact match required)
• Mounting type: DIN Rail (exact match required)
• Termination style: Spring Terminal (exact match required)
• Coil type: Non Latching (exact match required)
• RoHS compliance: Required

The Phoenix Contact 2900308 meets all substitution criteria as a direct equivalent within the Phoenix Contact product line, with active product status and enhanced operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 2900308 is a direct functional equivalent to the obsolete 2966566. Both components share identical electrical specifications, contact ratings, and switching characteristics. The 2900308 offers the advantage of active product status, ensuring continued availability and supply chain reliability.

The 2900308 provides an extended operating temperature range (-40°C to 60°C versus -25°C to 60°C), which accommodates a broader range of environmental conditions. Contact material composition differs between the two parts; the 2900308 uses Silver Tin Oxide (AgSnO) in place of pure Silver (Ag), a standard material evolution in relay manufacturing that maintains electrical performance within the specified switching voltage and current parameters.

Both components maintain RoHS compliance and MSL Level 1 rating, supporting modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 2900308 directly replace the 2966566 in existing installations?

A: Yes. The 2900308 meets all electrical and mechanical specifications of the 2966566, including coil voltage, contact form, current rating, switching voltage, and DIN rail mounting configuration. Spring terminal connections are identical, allowing direct substitution without circuit modification.

Q: What is the significance of the contact material difference between the two parts?

A: The 2966566 uses Silver (Ag) and Gold (Au) contact materials, while the 2900308 uses Silver Tin Oxide (AgSnO) and Gold (Au). Both material compositions are suitable for the specified 50 mA contact rating and 30VAC/36VDC switching voltage. Silver Tin Oxide provides enhanced contact durability and is standard in current relay manufacturing.

Q: Does the extended temperature range of the 2900308 affect compatibility?

A: No. The 2900308 operating range of -40°C to 60°C encompasses the original -25°C to 60°C specification. The extended lower temperature limit provides additional operational flexibility without affecting performance within the original temperature envelope.

Q: Are packaging considerations relevant to substitution?

A: The 2966566 is listed with packaging designation "-" while the 2900308 is supplied in Bulk packaging. Both components are DIN rail mounted relays with identical form factors. Packaging designation refers to distribution format and does not affect electrical or mechanical compatibility.

Q: What is the inventory status of these parts?

A: The 2966566 (obsolete) has 862 pieces in stock. The 2900308 (active) has 1130 pieces in stock, providing greater supply availability for new procurements and ongoing system support.