Cooper / Bussman

Overview

Cooper / Bussman (commonly referred to as Bussmann) is a longtime leader in overcurrent protection. Today the Bussmann product families are part of Eaton’s circuit‑protection portfolio and include cartridge, midget, high‑speed and Low‑Peak fuses along with holders, box cover units and fusible disconnect accessories used across industrial, commercial and OEM applications.

What the brand is known for

Bussmann is known for comprehensive, documented protection products: time‑delay dual‑element branch fuses (Fusetron FRN/FRS), compact Low‑Peak motor fuses (LP‑CC, LPS‑RK), Limitron fast‑acting and current‑limiting fuses (JJN/JJS, KTK), high‑speed semicon fuses (FWX) and small‑dimension fuses and holders for electronic controls.

Main product families and technologies

• Branch‑circuit time‑delay fuses: FRN‑R and FRS‑R (dual‑element, current‑limiting).
• Low‑Peak series (LP‑CC, LPS‑RK): compact, higher interrupting rating fuses for closer sizing on small motors and control circuits.
• Limitron (JJN/JJS, KTK): very fast‑acting, current‑limiting fuses for space‑sensitive power applications.
• High‑speed/semiconductor fuses: FWX and IEC high‑speed lines for converters and DC buses.
• Midget and small‑dimension fuses: FNM, GDC 5×20 mm glass/ceramic fuses for control circuits and electronics.
• Holders and disconnects: panel and plug holders (HPM), box cover units (SSU), and DIN‑rail/fusible disconnect accessories (NDNA100 and related kits).

Typical applications

Applications include facility and panel branch‑circuit protection, motor and HVAC protection, VFD and converter protection, and board‑level control circuitry. Bussmann offerings cover the electrical, mechanical and time‑current specifications procurement teams require.

How Safsale supports buyers

• Cataloged listings and photos: find parts by catalog number and confirm body style and end fittings.
• Datasheets and PDFs: time‑current curves, dimensions and agency approvals are linked on product pages for specification checks.
• Cross‑references and Q&A: equivalency notes, buyer reviews and Q&A help identify modern replacements and fitment concerns.

Sourcing and replacement guidance

• Match catalog number, voltage and interrupting rating — not just amperage.
• Confirm holder/carrier compatibility (HPM, SSU, bolt/stud holders) and any adapter kits for disconnect switches.
• Keep a core set of Low‑Peak, Fusetron and midget fuses as spares for facility maintenance; reserve Limitron and high‑speed types for power‑electronics spares.
• Use the full datasheet and product images to verify physical dimensions and time‑current performance before ordering replacements.

Note: Safsale provides product listings, technical PDFs, images, reviews and buyer Q&A to support correct selection and procurement. Unless explicitly shown on a product page, Safsale does not claim authorization or represent OEM distribution status.