Why Choose the EMAS SMB20LC2-B15 Magnetic Door Switch?
The EMAS SMB20LC2-B15 is a 78 mm rectangular magnetic door switch designed for non-contact monitoring of machine guards, protective doors and industrial access points. Part of the EMAS SM Series, this model combines a plastic housing, left-side cable exit, 2NC contact configuration and a 5 mm sensing distance.
The magnetic operating principle allows the switch to detect its compatible actuator without mechanical engagement, helping reduce wear in applications subject to frequent guard opening and closing. The SMB20LC2-B15 is the non-LED configuration and is supplied with a 2 m pre-wired cable for convenient connection to the associated machine control or monitoring circuit.
Its 2NC output arrangement, compact rectangular construction and defined 5 mm sensing configuration make the SMB20LC2-B15 a practical choice for industrial machinery requiring dependable door or guard-position detection. The left-exit cable arrangement also provides a specific routing option where installation geometry determines the preferred cable direction.
Key Advantages
- Reliable non-contact magnetic detection for machine doors and protective guards.
- 2NC contact configuration for integration into compatible monitoring and control circuits.
- 5 mm sensing distance with the corresponding compatible actuator.
- 78 mm rectangular format for industrial machine installations.
- Left-side cable exit provides a defined connection orientation for installation.
- 2 m pre-wired cable simplifies connection without requiring a separate sensor connector.
- Plastic housing provides a practical construction for industrial applications.
- Non-contact operation avoids mechanical engagement between the sensor and actuator.
Key Features
- EMAS SM Series magnetic door switch.
- 78 mm nominal rectangular format.
- Plastic body construction.
- Left cable exit.
- 2NC contact arrangement.
- 5 mm sensing distance.
- 2 m cable connection.
- Without LED indication.
- Non-contact magnetic switching principle.
- Designed for machine-door and guard-position monitoring.
Reliable Non-Contact Machine Door and Guard Monitoring
Magnetic door switches operate using a sensor mounted to the fixed part of a machine and a corresponding magnetic actuator mounted to the movable guard or door. When the actuator approaches the sensor, the magnetic field causes the switch contacts to change state, allowing the connected control or monitoring system to determine the position of the guard without requiring mechanical contact between the two components.
The EMAS SMB20LC2-B15 is configured with two normally-closed contacts and a 5 mm sensing distance. Its left-exit 2 m cable provides a convenient wiring arrangement for compatible machinery layouts, while the non-LED configuration is suitable where local visual status indication is not required.
Typical Applications
- Industrial machine-door monitoring.
- Protective machine-guard position detection.
- Hinged and sliding access doors.
- Packaging and assembly machinery.
- Automated production equipment.
- Conveyor and material handling machinery.
- Protective enclosures and access panels.
- Industrial automation and machine monitoring systems.
