Housing identity and key specs
The 1-521766-2: Molded from natural polyamide (PA66), it mounts free hanging (in-line) and is rated for side-to-side stacking.
Terminal fit and stacking
The housing is designed for 0.250" (6.35mm) quick-connect terminals and supports side-to-side stacking — multiple housings can be ganged together without additional hardware.
