Magnasphere MSS-330C 1" Recessed / Concealed Contact with 3 Switches, 3 Open Loop
- Multiple (2 or 3) individual contact outputs
- Available in open loop configurations
- Available in 1" diameter low profile recessed, and surface-mount, armored cable versions
- Compatible with all control panels
- American-made with patented Magnasphere switch technology

The MSS-330C from Magnasphere is a 1" Recessed / Concealed Contact with 3 Switches, 3 Open Loop. Magnasphere’s MSS-300 Series of Recessed and Surface-Mount Contacts offer two or three separate contact outputs; ideal for installations where a single contact is desired for use with multiple independent systems (e.g. IDS and ACS) and Home Automation applications.
In response to a request from the U.S. Department of State, Magnasphere has introduced both a 1” concealed and a surface mount version of multiple switch contacts for non-high security installations. They are offered in two and three contact configurations and in both Open and Closed Loop variations, depending on installation requirements. The MSS-300 Series provides a single switch solution for monitoring multiple systems (Intrusion Detection and Access Control) and for Home Automation applications. Older style security contacts have been made with a decades-old technology call the Reed switch, which have three inherent weaknesses when used as security contacts. They are (1) Easily defeated with magnets (2) Prone to permanent contact weld failure (lightning, power surges) and (3) Fragile (made mostly of glass, they are subject to damage even when packaged as security contacts). The unique Magnasphere switch used in these devices renders the MSS-300 series products virtually unbreakable and highly resistant to permanent contact welding and outsider magnetic defeat.
Magnasphere MSS-330C Features
- Multiple Contact Outputs: Offers two or three individual contact outputs for monitoring multiple systems simultaneously, enhancing convenience and flexibility.
- Open Loop Configurations: Available in open loop requirements, accommodating various installation needs for higher versatility.
- Low Profile Design: Comes in a 1" diameter recessed design and surface-mount options, ensuring easy installation without sacrificing aesthetics.
- Universal Compatibility: Compatible with all control panels, making it a reliable choice for diverse security setups.
- American-Made Technology: Built with patented Magnasphere switch technology, emphasizing quality and innovation.
- Resistant to Welding: Designed to resist permanent contact welding due to power surges, stun guns, and lightning—ultimately increasing reliability.
- High Security Assurance: Provides the highest level of security for every installation, instilling confidence in your security system.
Magnasphere MSS-330C Detailed Specifications
| Feature | Details |
|---|---|
| Output Configuration | 3 switches |
| Loop Type | Open loop |
| Mounting Type | Recessed 1" or surface mount |
| Compatibility | Compatible with all control panels |
| Special Technology | Patented Magnasphere switch technology |
| Resistance Features | Resists permanent contact welding |
| Manufacturing Origin | American-made |



