Exhibit 5.1

777 E Wisconsin Ave Milwaukee, WI 53202-5306 414.271.2400 TEL 414.297.4900 FAX foley.com

September 29, 2026

Ladies and Gentlemen:

We have acted as counsel for Hoffman Schroff Holdings, Inc., a Delaware corporation (the “Issuer”), nVent Electric plc, an Irish public limited company (“nVent”), and nVent Finance S.à r.l., a Luxembourg private limited liability company (société à responsabilité limitée) (together with nVent, the “Guarantors”), in connection with the preparation of a Registration Statement on Form S-3 (Registration No. 333-293530, 333-293530-01 and 333-293530-02) (the “Registration Statement”), including the prospectus constituting a part thereof, dated February 17, 2026 and the final supplement to the prospectus, dated September 15, 2026 (collectively, the “Prospectus”), filed by the Issuer and the Guarantors with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”), relating to the issuance and sale by the Issuer in the manner set forth in the Registration Statement and the Prospectus of $800,000,000 aggregate principal amount of the Issuer’s 6.150% Senior Notes due 2036 (the “Notes”). The Notes are fully and unconditionally and jointly and severally guaranteed as to the due and punctual payment of the principal of, premium, if any, and interest and any additional amounts, if any, on the Notes when and as the same shall become due and payable, whether at maturity, upon redemption or otherwise, by the Guarantors (the “Guarantees”). The Notes will be issued under the Indenture, dated September 29, 2026 (the “Base Indenture”), among the Issuer, the Guarantors and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”), and the First Supplemental Indenture, dated September 29, 2026 (the “Supplemental Indenture” and, together with the Base Indenture, the “Indenture”), among the Issuer, the Guarantors and the Trustee.

In connection with our opinion, we have examined: (i) the Registration Statement, including the Prospectus, and the exhibits (including those incorporated by reference) constituting a part of the Registration Statement; (ii) the Indenture; (iii) the forms of the Notes and the Guarantees; and (iv) such other proceedings, documents and records as we have deemed necessary to enable us to render this opinion.

AUSTIN   |   BOSTON |   BRUSSELS | CHICAGO | DALLAS | DENVER | DETROIT | HOUSTON | JACKSONVILLE | LOS ANGELES
MADISON | MEXICO CITY | MIAMI | MILWAUKEE | NASHVILLE | NEW YORK | ORLANDO | RALEIGH | SACRAMENTO | SALT LAKE CITY
SAN DIEGO | SAN FRANCISCO | SILICON VALLEY | TALLAHASSEE | TAMPA | TOKYO | WASHINGTON, D.C.

nVent Electric plc

 Hoffman Schroff Holdings, Inc.

 nVent Finance S.à r.l.

 September 29, 2026

 Page 2

In our examination of the above-referenced documents, we have assumed the genuineness of all signatures, the authenticity of all documents, certificates and instruments submitted to us as originals and the conformity with the originals of all documents submitted to us as copies. We have also assumed that (i) the Trustee is duly organized, validly existing and in good standing under the laws of its jurisdiction of organization, and is duly qualified to engage in the activities contemplated by the Indenture; (ii) the Indenture has been duly authorized, executed and delivered by, and represents the valid and binding obligation of, the Trustee, enforceable against the Trustee in accordance with its terms, (iii) the Guarantors are validly existing with power and authority to execute and deliver the Indenture and the Guarantees; (iv) the Indenture and the Guarantees are duly authorized, executed and delivered by the Guarantors in accordance with Irish law and Luxembourg law, as applicable; and (v) the Notes and the Guarantees have been duly authenticated by the Trustee in accordance with the Indenture.

Based upon and subject to the foregoing and the other matters set forth herein, and having regard for such legal considerations as we deem relevant, we are of the opinion that:

1.            The Notes are legally issued and valid and binding obligations of the Issuer, enforceable against the Issuer in accordance with their terms.

2.            The Guarantees are legally issued and valid and binding obligations of the Guarantors, enforceable against the Guarantors in accordance with their terms.

The opinions above are each subject to (i) the effect of any bankruptcy, insolvency, reorganization, moratorium, arrangement or similar laws affecting the rights and remedies of creditors’ generally, including without limitation the effect of statutory or other laws regarding fraudulent transfers or preferential transfers and (ii) general principles of equity, including without limitation concepts of materiality, reasonableness, good faith and fair dealing and the possible unavailability of specific performance, injunctive relief or other equitable remedies regardless of whether enforceability is considered in a proceeding in equity or at law.

We express no opinion as to the laws of any jurisdiction other than the laws of the State of New York, the provisions of the Delaware General Corporation Law and the federal laws of the United States. We are not qualified to practice law in the State of Delaware.

nVent Electric plc

 Hoffman Schroff Holdings, Inc.

 nVent Finance S.à r.l.

 September 29, 2026

 Page 3

We hereby consent to the deemed incorporation by reference of this opinion into the Registration Statement and the Prospectus and to the references to our firm therein. In giving this consent, we do not admit that we are “experts” within the meaning of Section 11 of the Securities Act or within the category of persons whose consent is required by Section 7 of the Securities Act.