Hammond Manufacturing 175A-EU Equivalent & Substitute Parts

Part Overview

The Hammond Manufacturing 175A-EU is a non-isolated autotransformer rated for 100VA with primary voltage of 230V and secondary voltage of 115V. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and component procurement.

The 175A-EU features CEE 7/4 input connector and NEMA 5-15R output connector configuration, with a weight of 4.6 lbs (1.6 kg). As an autotransformer design, it provides voltage conversion without galvanic isolation between primary and secondary circuits.

Substiute Parts

175A-EU

Hammond ManufacturingIn Stock: 734175A-EU Datasheet

Current PartRFQ

172A

Hammond ManufacturingIn Stock: 1180172A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 175A-EU are identified based on the following critical parameters that determine functional equivalence:

• Voltage conversion capability: Primary 230V to Secondary 115V
• Power rating: 100VA maximum
• Output connector type: NEMA 5-15R
• Regulatory compliance: ROHS3 Compliant status

The Hammond Manufacturing 172A qualifies as a substitute part based on matching voltage specifications (230V primary, 115V secondary) and identical power rating (100VA). Both parts maintain ROHS3 compliance and REACH unaffected status. The 172A is an isolation transformer type, providing galvanic isolation between primary and secondary circuits, which represents a functional enhancement over the non-isolated autotransformer design of the 175A-EU.

Parameter Comparison

Engineering Selection Recommendations

The Hammond Manufacturing 172A serves as the active substitute for the obsolete 175A-EU. Both components maintain identical voltage conversion specifications (230V to 115V) and power rating (100VA), with matching ROHS3 compliance and REACH unaffected status.

The 172A is currently in active production status, ensuring availability for new procurement and system replacements. The primary design difference is the transformer isolation topology: the 172A provides galvanic isolation between primary and secondary circuits, whereas the 175A-EU operates as a non-isolated autotransformer.

Connector compatibility requires verification: the 175A-EU uses CEE 7/4 input and NEMA 5-15R output, while the 172A uses NEMA 6-15P input and NEMA 5-15R output. The output connector (NEMA 5-15R) is identical on both units. Input connector adaptation may be required depending on system configuration.

Frequently Asked Questions (FAQ)

Q: Can the Hammond 172A directly replace the 175A-EU without modifications?

A: The 172A matches the critical electrical parameters (230V primary, 115V secondary, 100VA rating) and output connector (NEMA 5-15R). However, the input connector differs: 175A-EU uses CEE 7/4 while 172A uses NEMA 6-15P. Connector adaptation is necessary for direct substitution.

Q: What is the functional difference between the autotransformer 175A-EU and isolation transformer 172A?

A: The 175A-EU is a non-isolated autotransformer where primary and secondary circuits share a common connection. The 172A is an isolation transformer providing galvanic isolation between primary and secondary windings. Both deliver identical voltage conversion and power ratings.

Q: Are both transformers compliant with current regulatory standards?

A: Both the 175A-EU and 172A are ROHS3 compliant and REACH unaffected. The 172A is in active production status, ensuring compliance with current manufacturing standards.

Q: Why does the 172A weigh more than the 175A-EU?

A: The 172A weighs 6.5 lbs (2.9 kg) compared to 4.6 lbs (1.6 kg) for the 175A-EU. The additional weight reflects the isolation transformer design, which requires separate primary and secondary windings rather than the shared winding configuration of an autotransformer.

Q: Is the 172A available in the same packaging as the 175A-EU?

A: The 175A-EU packaging is listed as standard, while the 172A is supplied in bulk packaging. Packaging configuration should be verified with the supplier for specific application requirements.