175F-EU Equivalent & Substitute Parts Reference

Part Overview

The Hammond Manufacturing 175F-EU is a non-isolated autotransformer rated for 1000VA with 230V primary and 115V secondary voltage conversion. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and component procurement.

Autotransformers differ from isolation transformers in that they share a common winding between primary and secondary circuits, resulting in lower weight and cost but without galvanic isolation. When the 175F-EU reaches end-of-life or inventory depletion, substitute components must maintain voltage conversion capability and power rating while accounting for functional differences in transformer topology.

Substiute Parts

175F-EU

Hammond ManufacturingIn Stock: 1100175F-EU Datasheet

Current PartRFQ

172F

Hammond ManufacturingIn Stock: 964172F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 175F-EU is constrained by the following critical parameters:

• Voltage Conversion: Primary 230V to secondary 115V is the defining electrical requirement
• Power Capacity: 1000VA minimum rating ensures load compatibility
• Connector Compatibility: Primary connector (CEE 7/4) and secondary connector (NEMA 5-15R) must match or be adaptable
• Transformer Topology: While the 175F-EU is an autotransformer, isolation transformers with identical voltage and power ratings provide functional substitution for applications where galvanic isolation is acceptable or beneficial

The Hammond Manufacturing 172F is identified as a substitute based on matching voltage conversion (230V to 115V) and power rating (1000VA). The 172F operates as an isolation transformer rather than an autotransformer, introducing galvanic isolation between primary and secondary circuits. This topology change affects weight, connector type, and electrical safety characteristics but maintains the core voltage conversion and power delivery function.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: The 172F is the identified substitute for the 175F-EU based on matching voltage conversion and power capacity specifications. Both components are ROHS3 compliant and manufactured by Hammond Manufacturing.

Topology Difference: The transition from autotransformer (175F-EU) to isolation transformer (172F) introduces galvanic isolation. This change affects electrical safety characteristics and may require circuit evaluation in applications where isolation was not previously present or where the absence of isolation was intentional.

Connector Adaptation: The primary connector differs between parts (CEE 7/4 on 175F-EU versus NEMA 6-15P on 172F). Physical connector adaptation or rewiring may be necessary depending on installation configuration.

Weight and Form Factor: The 172F weighs 35 lbs (15.9 kg) compared to 15 lbs (6.8 kg) for the 175F-EU. Installation space and mounting structure must accommodate the increased weight and potentially different physical dimensions.

Product Status: The 172F maintains active product status with current inventory availability (913 units), whereas the 175F-EU is obsolete. This availability difference supports the 172F as the practical substitute for ongoing procurement.

Frequently Asked Questions (FAQ)

Q: Can the 172F directly replace the 175F-EU in all applications?

A: Both components provide 230V to 115V voltage conversion at 1000VA capacity. The primary difference is transformer topology: the 175F-EU is an autotransformer while the 172F is an isolation transformer. Applications requiring galvanic isolation benefit from the 172F. Applications where isolation was not previously present require circuit evaluation to confirm compatibility with the added isolation.

Q: What is the significance of the connector difference between these parts?

A: The 175F-EU uses CEE 7/4 primary connector and NEMA 5-15R secondary connector. The 172F uses NEMA 6-15P primary connector and NEMA 5-15R secondary connector. The secondary connectors match, but the primary connector differs. Physical adapter cables or rewiring may be required depending on the existing power source configuration.

Q: Why is the 172F heavier than the 175F-EU?

A: Isolation transformers require separate primary and secondary windings with no electrical connection between them, necessitating additional copper and core material compared to autotransformers where windings share a common section. This results in increased weight and physical size.

Q: Are both parts compliant with current regulatory standards?

A: Both the 175F-EU and 172F are ROHS3 compliant and REACH unaffected. Both carry ECCN classification EAR99 and corresponding HTSUS codes appropriate for their respective transformer types.

Q: What inventory considerations apply to these parts?

A: The 175F-EU is obsolete with 1002 units currently in stock. The 172F is active with 913 units in stock. For new designs or long-term procurement, the 172F represents the available alternative as the 175F-EU inventory depletes.