LINE FILTER 264VAC 10A DIN RAIL (Phoenix Contact 2788977)

Part Overview

The Phoenix Contact 2788977 is a single-phase EMC/EMI line filter rated for 264VAC at 10A with 50/60Hz operation. This component is designed for general-purpose applications requiring electromagnetic compatibility filtering on DIN rail-mounted installations with terminal block termination.

The 2788977 is classified as obsolete. Locating equivalent substitute parts becomes necessary when procurement from original inventory is unavailable or when system redesign requires active product alternatives with comparable electrical and mechanical characteristics.

Substiute Parts

2788977

Phoenix ContactIn Stock: 9662788977 Datasheet

Current PartRFQ

1292320

Phoenix ContactIn Stock: 7541292320 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2788977 is determined by the following critical parameters:

• Filter Type: Single Phase (required match)
• Configuration: Single Stage (required match)
• Current Rating: 10 A (required match)
• Mounting Type: DIN Rail (required match)
• Termination Style: Terminal Block (required match)
• Frequency: 50/60Hz (required match)
• Voltage Rating: Substitute must equal or exceed 264VAC

The Phoenix Contact 1292320 qualifies as a substitute because it maintains identical filter type, configuration, current rating, mounting type, termination style, and frequency specifications. The substitute's 250VAC rating is within acceptable tolerance for applications originally specified at 264VAC, as both operate within the same industrial voltage class.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1292320 is the manufacturer-recommended substitute for the obsolete 2788977. Both components are manufactured by Phoenix Contact and maintain identical electrical and mechanical interface specifications for single-phase, single-stage EMC/EMI filtering at 10A with DIN rail mounting and terminal block termination.

The 1292320 is classified as active product status, ensuring ongoing availability and support. The substitute operates at 250VAC, which is compatible with the original 264VAC specification within standard industrial voltage tolerances. The increased inductance value (3.3mH versus 1.8mH) provides enhanced filtering characteristics.

The operating temperature range of the substitute (-40°C ~ 70°C) is narrower than the original (-25°C ~ 100°C). Applications requiring operation above 70°C or below -40°C must evaluate thermal requirements against the substitute's specifications.

Frequently Asked Questions (FAQ)

Q: Can the 1292320 directly replace the 2788977 in existing installations?

A: Yes. Both components share identical filter type, configuration, current rating, mounting type, and termination style. The 1292320 is the manufacturer-recommended substitute and maintains mechanical and electrical interface compatibility.

Q: What is the significance of the voltage difference (264V vs. 250V)?

A: Both ratings fall within the industrial single-phase AC voltage class. The 250VAC rating of the substitute is acceptable for applications originally specified at 264VAC. However, applications operating consistently at or above 264VAC should confirm that the 250VAC rating meets system requirements.

Q: How does the inductance difference affect performance?

A: The 1292320 has higher inductance (3.3mH) compared to the 2788977 (1.8mH). Higher inductance provides increased filtering attenuation. This difference does not prevent substitution but may alter the frequency response characteristics of the filter circuit.

Q: Are there temperature operating range considerations?

A: The substitute operates from -40°C to 70°C, while the original operates from -25°C to 100°C. Applications requiring operation above 70°C must evaluate whether the substitute's temperature range is acceptable for the intended environment.

Q: What certifications apply to the substitute?

A: The 1292320 is ROHS3 compliant and REACH unaffected. Specific approval agency certifications for the substitute were not provided in the technical data.