What the ratings mean for your panel
The 387600112: The 15 A per circuit at 300 V rating positions this block in the mid-range of panel wiring duty — heavy enough for branch power distribution in industrial enclosures, but below the 30-63 A class that the Eurostyle 39100 series serves at pitches of 0.394" and 0.591". The 0.375" pitch is tighter than either peer, which means it does not drop into a panel cutout sized for those parts — rewiring or re-drilling is required if you are substituting across series. The dual-wall 2-row barrier construction with 24 wire entries (two per circuit) gives the field technician two termination points per circuit — useful for daisy-chaining or distributing a single signal to multiple branches without a separate jumper. The zinc/clear chromate screw finish resists corrosion in enclosed panel environments; the steel screw material holds torque without stripping under repeated field adjustment. UL94 V-0 thermoplastic housing means the block self-extinguishes and does not propagate flame — critical for industrial enclosures where heat sources or fault conditions exist nearby. The flanged mounting feature allows mechanical fastening independent of the wire entries, so the block stays put during field re-termination.