Abstract: An electrical contact unit includes: a conductive part that is adapted to abut on a first member and a second member; and a support part that swingably supports the conductive part. The conductive part has: a first abutting part that abuts on the first member; a second abutting part that abuts on the second member; and a swinging fulcrum that is located between the first abutting part and the second abutting part. The support part supports at least the swinging fulcrum, and the conductive part rotates at the swinging fulcrum causing the first abutting part to be pressed against the first member when the second member is pressed against the second abutting part.

Abstract: A set of fluoroalkylphosphorus agents for extinguishment of fires, suppression of explosions, and inertion against fires and explosions is disclosed. Specifically disclosed are agents based on fluoroalkyl esters of phosphorus-containing acids.