Birtcher | Calmark | Schroff | nVent


The Birtcher, Calmark and Schroff brands are now part of nVent, a world leader in electronics packaging.

As nVent, established electrical brands that were previously part of the diverse Pentair offerings will join forces under a single mission: That safer systems ensure a more secure world.

The nVent name reflects the collective legacy of its trusted brands, which have helped set the global standard for innovative electrical components and systems for more than a century.

Birtcher / Apw Electronic

Birtcher produces rugged commercial off-the-shelf printed circuit board card guides, Wedge-lok retainers, and conduction cooled frames designed for use in severe applications.


Calmark manufacturers PCB card guides, card-loks, retainers, extractors, card pullers, connector accessories and cooling products for the commercial and military industries.


Schroff has a broad product portfolio including printed circuit board (PCB) accessories, such as card retainers and extractors, front panels and handles to subracks, cases, backplanes, power supplies, cabinets and pre-assembled chassis for embedded computing systems.

nVent is a $2.1 billion, high-performance electrical company known for innovation, quality and reliability. Their products connect and protect, consistently delivering value to industrial, commercial, residential, energy and infrastructure customers.