Equivalent & Substitute Parts for Qualtek 857-10/033

Part Overview

The Qualtek 857-10/033 is a power entry connector receptacle designed for IEC 320-C14 panel mount applications. This component features male blades, filtered EMI/RFI protection, and quick connect termination rated for 10A at 115/250VAC. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where this connector type is required.

Substiute Parts

857-10/033

QualtekIn Stock: 1089857-10/033 Datasheet

Current PartRFQ

10EF1F

TE Connectivity Corcom FiltersIn Stock: 90910EF1F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Qualtek 857-10/033 is determined by the following critical parameters:

• Connector Style: Must be IEC 320-C14
• Connector Type: Must be Receptacle with Male Blades
• Current Rating: Must support minimum 10A at appliance inlet
• Voltage Rating: Must support minimum 115/250VAC
• Number of Positions: Must be 3
• Filter Type: Must include EMI/RFI filtering for commercial applications
• Mounting Type: Must be Panel Mount with Flange configuration
• Termination: Must be Quick Connect compatible
• Approval Certifications: Must maintain CSA, UL, and VDE compliance

The TE Connectivity Corcom Filters 10EF1F meets all substitution criteria as an active product with identical electrical specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity Corcom Filters 10EF1F is the direct functional equivalent for the obsolete Qualtek 857-10/033. Selection of the TE Connectivity part is supported by:

• Active product status ensuring ongoing availability and supply chain continuity
• Identical electrical ratings and filtering specifications
• Matching mechanical configuration for panel mount applications
• Full compliance with CSA, UL, and VDE certifications
• ROHS3 compliance alignment with current regulatory requirements
• Quick connect termination compatibility with standard 0.250" (6.3mm) blade specifications

The voltage rating differential (120VAC versus 115VAC) presents no functional limitation, as the TE Connectivity part operates across a compatible range that encompasses the original specification.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 10EF1F be used as a direct replacement for the Qualtek 857-10/033?

A: Yes. Both parts share identical IEC 320-C14 connector style, receptacle configuration, 10A current rating, 3-position design, commercial EMI/RFI filtering, panel mount flange mounting, and quick connect termination. All regulatory certifications match.

Q: What is the significance of the voltage rating difference (115VAC versus 120VAC)?

A: The TE Connectivity part operates at 120/250VAC, which encompasses the original 115/250VAC specification. This represents a compatible operating range with no functional limitation for applications designed for the original part.

Q: Are the quick connect terminations mechanically compatible?

A: Yes. Both parts use quick connect termination with the TE Connectivity part specified at 0.250" (6.3mm), which is the standard blade dimension for IEC 320-C14 receptacles.

Q: Does the TE Connectivity part maintain the same panel cutout requirements?

A: The TE Connectivity 10EF1F is specified with variable size panel cutout dimensions, whereas the original part specifies rectangular 28.45mm x 21.59mm. Verify panel cutout compatibility with your specific application requirements.

Q: Are regulatory certifications maintained with the substitute part?

A: Yes. The TE Connectivity 10EF1F maintains CSA, UL, and VDE approvals identical to the original part, ensuring compliance with the same regulatory standards.