5127000000 Schneider Frost Thermostat STT903 Professional Building Automation Unit
The Schneider Electric 5127000000 is a high-specification Frost Thermostat STT903 from the prestigious STT Series, engineered to deliver exceptional reliability, precision, and operational efficiency for modern intelligent building environments.
As part of the globally recognized EcoStruxure ecosystem, this device represents the integration of advanced engineering standards with high-durability hardware, ensuring seamless coordination of critical building services such as climate management, air quality monitoring, and system automation.
Designed for modular or wall-mounted installation, the 5127000000 enables building operators to implement modular control architectures that reduce energy overhead and enhance occupant comfort. Built with sustainable, halogen-free materials and future-ready technology, this device is a critical building block for achieving high-performance infrastructure certifications such as LEED, WELL, and Green Premium.
It is specifically engineered for 24/7 mission-critical operations in high-end commercial office towers, healthcare facilities, and industrial estates.
| Product Model | 5127000000 |
| Product Range | Schneider Electric STT Series |
| Communication Protocol | Mechanical Relay / S-Mode |
| Interface Configuration | 6m Capillary sensing element |
| Rated Operating Voltage | 230 V AC |
| Control Power Supply | Bus-powered or dedicated supply (model specific) |
| Functional Logic & Sensing | Automatic air frost protection, adjustable setpoint, SPDT switch |
| Network Topology Support | Supports standard star, daisy-chain, and branch-based bus architectures |
| Wiring Interface | Maintenance-free terminal blocks or industrial screw terminals for secure connectivity |
| Operating Temperature | 0°C to 50°C (standard indoor operational range) |
| Ingress Protection | IP20 / IP30 (Indoor mounting environments) |
| Housing Material | Halogen-free, Flame-retardant industrial grade polycarbonate |
| Certifications | CE Marked, RoHS, REACH, UL Listed, Green Premium Environmental Data |
A critical safety component for AHU units in cold climates. It monitors air temperature across the coil with its 6-meter capillary, triggering a shutdown or bypass if freezing conditions are detected to prevent pipe bursts.
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