175D-EU Equivalent & Substitute Parts Reference

Part Overview

The Hammond Manufacturing 175D-EU is a non-isolated autotransformer rated for 500VA with 230V primary and 115V secondary voltage conversion. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing procurement and system maintenance. The 175D-EU features CEE 7/4 input and NEMA 5-15R output connectors, making it suitable for European to North American voltage conversion applications.

Substiute Parts

175D-EU

Hammond ManufacturingIn Stock: 1271175D-EU Datasheet

Current PartRFQ

172D

Hammond ManufacturingIn Stock: 958172D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 175D-EU is determined by the following critical parameters:

• Primary voltage: 230V
• Secondary voltage: 115V
• Power rating: minimum 500VA
• Output connector type: NEMA 5-15R
• Regulatory compliance: ROHS3 Compliant

The 172D qualifies as a substitute based on matching primary and secondary voltages (230V to 115V), exceeding the power requirement (550VA vs. 500VA), maintaining ROHS3 compliance, and providing compatible output connector specification (NEMA 5-15R). The 172D operates as an isolation transformer rather than an autotransformer, introducing galvanic isolation between primary and secondary circuits—a functional enhancement over the non-isolated design of the 175D-EU.

Parameter Comparison

Engineering Selection Recommendations

The 172D is an active product with current manufacturing support, whereas the 175D-EU is obsolete. Both components maintain ROHS3 compliance and REACH unaffected status. The 172D provides 550VA capacity, exceeding the 175D-EU requirement by 50VA. The primary distinction is transformer topology: the 172D isolation design provides galvanic separation between input and output circuits, whereas the 175D-EU autotransformer configuration maintains electrical continuity between primary and secondary windings. Input connector compatibility requires evaluation—the 175D-EU uses CEE 7/4 while the 172D uses NEMA 6-15P. Both deliver NEMA 5-15R output connectors. Weight differential reflects the isolation transformer construction (18 lbs vs. 10 lbs).

Frequently Asked Questions (FAQ)

Q: Can the 172D directly replace the 175D-EU in existing installations?

A: Voltage specifications (230V primary, 115V secondary) and output connector type (NEMA 5-15R) are compatible. Input connector type differs (CEE 7/4 vs. NEMA 6-15P), requiring adapter evaluation or installation modification. The isolation transformer design of the 172D provides enhanced safety through galvanic separation.

Q: What is the functional difference between autotransformer and isolation transformer designs?

A: The 175D-EU autotransformer maintains electrical continuity between primary and secondary circuits. The 172D isolation transformer provides galvanic isolation, eliminating direct electrical connection between input and output. Isolation transformers are preferred in applications requiring safety-critical grounding or noise reduction.

Q: Does the 550VA rating of the 172D provide sufficient capacity for 175D-EU applications?

A: Yes. The 172D 550VA rating exceeds the 175D-EU 500VA specification by 10%, providing adequate margin for equivalent load handling.

Q: Are both components compliant with current regulatory standards?

A: Both the 175D-EU and 172D maintain ROHS3 compliance and REACH unaffected status. The 172D, as an active product, receives ongoing compliance verification.

Q: What installation considerations apply to the 172D as a substitute?

A: Input connector type (NEMA 6-15P) differs from the 175D-EU (CEE 7/4). Mechanical mounting and weight increase (18 lbs vs. 10 lbs) may require installation review. Output connector compatibility (NEMA 5-15R) remains unchanged.