Nascom N400TB/ST Surface Mount Terminal Industrial Bar Switch/Magnet Set with Spacers, Brown

Engineered for dependable perimeter protection in commercial environments, the Nascom N400TB/ST surface mount terminal industrial bar switch/magnet set provides wide-gap, low-maintenance detection for doors and windows. This Nascom magnetic contact combines hermetically sealed contacts and a powerful N35 NdFeB magnet to deliver consistent performance and reduce nuisance alarms caused by door warping or settling. With a standard 2.5" gap and an included spacer for steel door installations, the N400TB/ST keeps sensing alignment accurate on heavy-duty frames and metal surfaces.

Installers benefit from the screw terminal termination and four possible wire directions (including bottom entry), enabling faster wiring and neat connections on retrofit and new-build projects. The ABS housing resists impact and environmental exposure, while the UL634 listing gives you confidence in commercial security and access control deployments. Ideal for integration with alarm panels, surveillance systems, and monitoring platforms, the Nascom N400TB/ST is tailored for facilities that require robust, low-false-alarm door/window monitoring. Add this industrial magnetic contact to your next security or access control installation to improve reliability and reduce service calls.

• Prevents false alarms on warped or shifting commercial doors with an extra-wide 2.5" gap for reliable perimeter monitoring
• Hermetically sealed contacts and N35 rare-earth magnet for durable, long-term performance in harsh environments
• Spacer included for steel door installs to maintain consistent gap and reduce field adjustments
• Screw terminal design with four possible wire directions (including bottom) speeds installation and maintenance
• UL634 listing ensures compliance with commercial security and access control standards