⭐️Compatibility: This interlock kit fits Eaton/Cutler Hammer Challenger BR Series and CH-Series 150 or 200 amp panels, the spacing between main and the closest generator breaker is 1 1/4 to 1 1/2''.
⭐️Durability: The generator lockout kit is made of corrosion-resistant and high hardness aluminum alloy.
⭐️Anodization: Our interlock switch has been treated with surface anodized, electrical insulation, heat insulation, safer.