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The Siemens SIRIUS ACT 3SU1801-0NB00-2AC2 is an emergency stop control device designed for industrial safety applications. It offers a robust solution for quickly halting machinery in hazardous situations, featuring a clear yellow housing and a twist-to-release mechanism. Its primary benefit is enhanced operational safety through immediate emergency shutdown capabilities. A key consideration is its specific contact configuration, which includes 2 normally closed contacts only.
| Series | SIRIUS ACT |
|---|---|
| Model Part Number | 3SU1801-0NB00-2AC2 |
| Brand | Siemens |
Its primary function is to serve as an emergency stop (E-stop) control device, allowing for the rapid shutdown of machinery in hazardous situations.
An IP68 rating means the device is dust-tight and protected against continuous immersion in water under specified conditions, making it highly suitable for harsh environments.
This model features a twist-to-release mechanism. To reset, you typically need to twist the yellow actuator head.
This device is equipped with 2 normally closed (NC) contacts. It does not have normally open (NO) or change-over contacts.
It is compatible with control supply voltages from 5 to 500V AC at 50/60Hz and 5 to 500V DC.
With its IP68 rating, it is protected against dust and water immersion, making it suitable for many outdoor industrial applications, provided it is installed correctly.
The 3SU1801-0NB00-2AC2 comes with a fixed contact configuration of 2 NC contacts. For different contact arrangements, you would need to consider other models in the SIRIUS ACT series.
Verify that the device is correctly wired into the control circuit and that the control supply voltage is within the specified range (5-500V AC/DC). Check that the normally closed contacts are functioning correctly.
Inspect the actuator head and surrounding area for obstructions. Ensure no debris has entered the mechanism. If the issue persists, the unit may need replacement.
Immediately power down the equipment and inspect the mounting seals and housing for damage. If ingress is confirmed, the unit must be replaced to maintain safety integrity.
Setup: This device is designed to be mounted in control panels or enclosures. It typically requires a cut-out for its mounting mechanism. Wiring involves connecting the power supply to the terminals and integrating the two normally closed contacts into the safety control circuit. Ensure all connections are secure and conform to local electrical codes. The device dimensions (85 x 85 x 112.5 mm) should be considered during panel layout.
Compatibility: The 3SU1801-0NB00-2AC2 is part of the Siemens SIRIUS ACT series, designed to integrate with other SIRIUS components. It is compatible with control supply voltages from 5 to 500V AC at 50/60Hz and 5 to 500V DC.
Care: To maintain optimal performance and longevity, regularly inspect the device for any signs of damage. Clean the exterior with a dry or slightly damp cloth. Avoid using solvents or abrasive cleaners, as they can damage the plastic housing or labeling. Ensure the area around the actuator remains free of obstructions.
