Phoenix Contact 2794987 Terminal Block - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 2794987 is a 3-position feed-through terminal block connector rated for 10-26 AWG wire gauges with screw termination. Designed for applications requiring 30A current capacity at 110V UL rating, this component features integrated varistor protection and polyamide insulation with UL94 V-2 flammability rating.

This part carries an Obsolete product status. Identifying equivalent and substitute components is necessary to maintain system functionality and ensure continued availability for new designs or replacement applications.

Substiute Parts

2794987

Phoenix ContactIn Stock: 10652794987 Datasheet

Current PartRFQ

2906840

Phoenix ContactIn Stock: 12212906840 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 2906840 is identified based on the following substitution criteria:

Functional Protection Alignment: The main part 2794987 incorporates integrated varistor protection for transient voltage suppression. The substitute part 2906840 is a dedicated Transient Voltage Suppressor (TVS) module designed to provide equivalent circuit protection functionality.

Electrical Compatibility Parameters:

• Voltage protection capability: 500V protection level (2906840) exceeds the 110V UL rating requirement of the main part
• Continuous operating voltage: 150VAC/150VDC MCOV rating provides margin above the main part's 110V specification
• Current handling: Both components support industrial-grade circuit protection applications

Compliance and Certification Alignment:

• RoHS compliance maintained (RoHS3 Compliant for substitute vs. RoHS Compliant for main part)
• UL approval present on substitute part (cCSAus, CSA, CSAus, UL certifications)
• ECCN classification identical (EAR99)

Application Context: This substitution applies to designs where the integrated varistor function of the main part can be replaced with a dedicated external TVS module, allowing continued protection functionality in updated system architectures.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement: The 2794987 is classified as Obsolete. The substitute part 2906840 is Active status, ensuring long-term availability and continued manufacturing support.

Compliance Verification: Both components maintain EAR99 ECCN classification and RoHS compliance. The substitute part carries expanded UL certifications (cCSAus, CSA, CSAus, UL) compared to the main part's standard UL rating, providing additional regulatory coverage for international applications.

Protection Level Adequacy: The substitute part's 500V protection level and 150VAC/150VDC MCOV rating provide electrical margin above the main part's 110V UL specification, ensuring equivalent or enhanced protection in transient voltage suppression applications.

Functional Transition: Selection of the substitute part requires system-level evaluation to confirm that external TVS module integration is compatible with the existing terminal block architecture and circuit layout requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2906840 directly replace the 2794987 in existing assemblies?

A: The 2906840 is a dedicated TVS module, whereas the 2794987 is an integrated terminal block with built-in varistor protection. Direct mechanical replacement is not possible. The substitute part requires external integration into the circuit protection scheme. System redesign may be necessary to accommodate the module-only form factor.

Q: What is the primary reason for substitution?

A: The 2794987 carries Obsolete product status, limiting future availability. The 2906840 is Active status and provides equivalent transient voltage suppression functionality through a dedicated TVS module approach.

Q: Are there compliance differences between the two parts?

A: Both parts maintain RoHS compliance and EAR99 ECCN classification. The 2906840 carries expanded UL certifications (cCSAus, CSA, CSAus, UL) and ROHS3 compliance, providing broader regulatory coverage than the main part.

Q: What voltage and current specifications should be verified during substitution?

A: The 2906840 provides 500V protection level and 150VAC/150VDC MCOV rating, both exceeding the 2794987's 110V UL specification. Verify that the application's transient voltage environment does not exceed the 500V protection threshold and that the circuit's continuous operating voltage remains within the 150V MCOV limit.

Q: Does the substitute part require different mounting or installation procedures?

A: Yes. The 2906840 is specified as Module Only with DIN Rail mounting type, differing from the 2794987's screw termination and feed-through terminal block design. Installation procedures and circuit integration methods will differ significantly.

Q: Is the operating temperature range a consideration for substitution?

A: The 2906840 specifies -40°C ~ 85°C operating temperature range. Confirm that this range meets the application's thermal requirements. The main part's operating temperature range is not specified in the available data.