Raychem PMJ-1 Polymatrix Junction Box

Raychem PMJ-1 Polymatrix Junction Box is a weatherproof, Type 4X enclosure in the Raychem PolyMatrix family designed to house terminations and splices for PolyMatrix heating cables. Described by distributors as the Polymatrix Junction Box component of the PMK-JLP-M Power Connection Kit, the PMJ-1 provides a dedicated junction point within Raychem’s polymer heat-tracing system for reliable power terminations in industrial installations. The Type 4X rating indicates protection against windblown dust, rain, and corrosion in demanding environments, enabling outdoor or harsh-site use where PolyMatrix cables are deployed. As part of PMK-JLP-M configurations, the PMJ-1 is used to complete a power connection in field installations, helping to organize cable entries and maintain safe, compliant terminations for heat-tracing circuits. The PMJ-1 designation identifies it as the standard Polymatrix Junction Box within the PMJ-1 family used with PMK-JLP-M kit offerings in distributor catalogs.