EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in this Registration Statement of Bel Fuse Inc. on Form S-8 of our report dated March 4, 1998, appearing in the Annual Report on Form 10-K of Bel Fuse Inc. for the year ended December 31, 1997. Deloitte & Touche LLP Parsippany, New Jersey October 12, 1998