Ratings that drive the spec-in
Rated 15A per circuit at 300V, the 387200206 accepts 14-22 AWG wire via screw-top termination. The dual-wall barrier construction encloses the current-carrying path on both sides, which is the key difference from an open-style terminal block — it adds physical isolation between adjacent circuits without needing external barriers. The black thermoplastic housing carries a UL94 V-0 flammability rating, meaning it self-extinguishes within the defined vertical burn test window — critical for enclosed-panel or inside-cabinet installations where heat or fault conditions are a concern. Operating range spans -40°C to 100°C, which covers the usual industrial ambient envelope without derating. The flange feature gives the block a defined mounting surface on the panel face, preventing rotation when the securing screws are torqued. Bottom termination is closed, so no live bus bar entry is possible from below — common for dead-front panel designs where access is restricted.