- Wide ambient temperature monitoring range: 0 °C to 200 °C
- Supports up to 6 temperature sensors with a single main module
- Temperature accuracy up to +/- 3 °C
- Relay can supervise both Alarm and Trip condition.
- ADD-ON display module for Temperature monitoring
- RS-485 port for SCADA Communication
- Over Temperature Trip Fault Record with Date & Time stamp
- Two Potential free Digital outputs (Relay ON/OFF)
- Two User configurable Digital inputs
- Supply voltage : 18 to 60 V DC
- 12×2 Alpha numeric bright display
- LED indication for Temperature Trip and Temperature Alarm.
- -1 LED for TRIP on fault
- -1 LINK LED for communication link between Base & display indication.
- -1 ALARM LED for over temperature indication.
- Power consumption: 6 VA

Precise, Continuous Wired Thermal Monitoring Relay: CSTSM-WD
FEATURES
Electrical machinery like transformers, motors, and busbars generate heat while handling heavy power loads. If left unchecked, excessive heat causes insulation breakdown, expensive equipment ruin, and severe power outages. The CSTSM-WD is an advanced digital protection relay designed multi-point thermal monitoring and intelligent control to safeguard industrial electrical machinery from overheating. Operating as a split architecture system, it features a main processing module mounted inside the electrical panel and a separate display module installed on the door for external viewing. It monitors up to six individual zones simultaneously using heavy-duty temperature sensors. If a zone crosses safe boundaries, the relay instantly sounds alarms, trips circuit breakers, and transmits status data to centralized management systems. It automatically triggers protection protocols before heat damages your critical infrastructure.
APPLICATION:
The CSTSM-WD relay acts as a universal safety guard across multiple electrical and facility systems:
- Busbar Protection: Continuously checks high-power distribution joints for loose connections or overloading.
- Transformer Safeguarding: Vital for maintaining power plant substations and factory transformers.
- Generator Protection: Prevents emergency backup and industrial off-grid power systems from seizing up.
- HVAC Heavy Motors: Guards massive compressors, fans, and pump motors against overheating stress.
- Prevent Sudden Production Shutdowns: By watching heat thresholds every half-second, the relay gives early warnings. This lets to plan machine servicing during scheduled down periods instead of scrambling during sudden plant-wide blackouts.
- Prolong Machinery Lifespan: The CSTSM-WD steps in to cut off power connections precisely when needed, shielding expensive switchgear and motors from irreparable heat failure.
- Fast & Simple Troubleshooting: When an emergency shutdown triggers, the exact location and reason appear on the screen automatically.
- Highly Adaptable & Scalable: It supports multiple power input ranges and user-programmable digital settings, to match specific equipment tolerances.