APEM butt action contacts (Series 1200) are normally open/closed, with a round actuator solder lug push button. Contacts have either screw terminals or quick connections. The polyamide case and plunger with brass or nickel-plated bushing is a useful feature, while the unit also features silver contacts and has silver-plated or copper contacts.
The unit is NF (EN 61058-1), UL and CSA approved.