The Siemens 3UA5900-2M is a thermal delayed overload relay designed to provide reliable protection for three-phase AC motors. It effectively safeguards motors against conditions such as overloading, single-phasing, prolonged acceleration, and frequent restarting operations.
Key Features
- Current Setting Range: Adjustable between 32 to 45 amperes, allowing for precise calibration to match specific motor requirements.
- Auxiliary Contacts: Equipped with one normally open (1NO) and one normally closed (1NC) contact, facilitating integration into various control circuits.
- Temperature Compensation: Ensures consistent performance across a wide range of ambient temperatures, maintaining accurate protection levels.
- Phase-Failure Protection: Detects and responds to phase loss conditions, preventing potential motor damage.
- Manual and Automatic Reset Options: Offers flexibility in operation, allowing users to choose between manual or automatic reset modes based on application needs.
Applications
The 3UA5900-2M is suitable for use with Siemens contactors, including models 3TF34, 3TF35, 3TF44, 3TF45, and 3TF46. Its robust design and versatile features make it ideal for protecting motors in various industrial applications, ensuring operational safety and equipment longevity.
Technical Specifications
- Product Number: 3UA5900-2M
- Current Range: 32 to 45 A
- Auxiliary Contacts: 1NO + 1NC
- Mounting: Compatible with Siemens contactors or can be installed as a standalone unit
- Weight: Approximately 0.71 lbs
Incorporating the Siemens 3UA5900-2M overload relay into your motor control system enhances protection against common electrical faults, contributing to improved system reliability and reduced downtime.
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