Why Choose the EMAS SMB21RC2-B15 Magnetic Door Switch?
The EMAS SMB21RC2-B15 is a compact and reliable rectangular magnetic door switch designed for contactless monitoring of machine doors, guards and access points in industrial automation systems. As part of the EMAS SM Series magnetic door switch range, it combines a durable plastic housing with a right-exit configuration, 2NC contact arrangement and integrated LED indication for clear operating status.
This magnetic door switch provides a 5 mm sensing distance and uses contactless coded triggering to detect its corresponding actuator. The non-contact operating principle helps reduce mechanical wear during repeated opening and closing cycles, while the two normally closed contacts provide a practical configuration for compatible machine monitoring and safety-related control circuits.
With a 78 mm nominal size, 2 m cable, integrated LED and IP68 protection rating, the SMB21RC2-B15 is engineered for demanding industrial environments. Its plastic rectangular body is resistant to dirt and dust, while its operating temperature range of -25 °C to +70 °C supports reliable use across a wide variety of machinery and automation applications.
Key Advantages
- Reliable contactless magnetic door and guard position detection.
- 2NC contact configuration for compatible control and monitoring circuits.
- 5 mm sensing distance for dependable actuator detection.
- Integrated LED indication provides useful local status visibility.
- Right-exit configuration supports suitable machine installation layouts.
- 2 m cable enables straightforward connection to control equipment.
- IP68 protection for operation in demanding industrial environments.
- Contactless triggering helps minimise mechanical wear.
- Designed to resist dirt and dust.
Key Features
- EMAS SM Series magnetic door switch.
- Plastic rectangular housing.
- Right-exit configuration.
- 2NC contact arrangement.
- 5 mm sensing distance.
- Integrated LED indicator.
- Contactless triggering.
- Coded trigger.
- 2 m cable connection.
- 4 × 0.25 mm² cable conductors.
- 78 mm nominal dimension.
- IP68 protection rating.
- -25 °C to +70 °C operating temperature.
- Available alongside left-exit and connector variants within the SM Series.
Reliable Contactless Door and Guard Monitoring
Magnetic door switches such as the EMAS SMB21RC2-B15 detect the position of a corresponding actuator using a contactless magnetic principle. This eliminates the need for direct mechanical actuation whenever a door or guard moves, helping reduce wear and supporting reliable operation in machinery with frequent access cycles.
The SMB21RC2-B15 combines coded triggering with 2NC contacts, a 5 mm sensing distance, integrated LED indication and IP68 protection. Its rectangular plastic housing and right-exit 2 m cable make it suitable for integration into machine guards, access doors, enclosure panels and other industrial equipment requiring dependable position monitoring.
Typical Applications
- Industrial machine door position monitoring.
- Protective machine guards and access panels.
- Automated production machinery.
- Packaging and processing equipment.
- Industrial enclosures and cabinet doors.
- Conveyor and material handling equipment.
- Machine building and OEM automation systems.
- Contactless door and guard status detection.
