What This Barrier Block Does in the Panel
The TE Connectivity Buchanan 1546310-2 is a 2-circuit barrier strip designed for power distribution and control wiring in industrial panels, lighting fixtures, and HVAC equipment. Its 0.563" (14.30mm) pitch provides generous creepage for the 300V rating, and the 30A per-circuit current capacity handles motor feeds, heater loads, or main DC rails without derating at typical panel ambient temperatures. The dual-wall barrier (2 Wall) isolates adjacent terminals, reducing the chance of accidental bridging during wiring or maintenance.
Accepts 10-22 AWG wire, covering solid and stranded conductors for both heavy power and smaller control loops. Top termination is via screws with a nickel-plated steel screw finish — the nickel resists corrosion in humid cabinet environments. The bottom termination is closed, meaning the screw clamps the wire against a current-carrying bar; no separate terminal is needed. Four wire entries (two per circuit) allow daisy-chaining or dual-feed connections.
Mounting and Flange Details
The integrated flanges let you bolt the block directly to a chassis or panel — critical for installations subject to vibration, such as on machine frames or in mobile equipment. The mounting type is chassis or panel, so no DIN rail adapter is needed; just drill two holes to match the flange slots.