Eaton URTDII-01 Universal RTD Temperature Module

Product Description

The URTDII-01 is Eaton (Cutler-Hammer) URTDII series universal RTD module, designed for EMR-3000 / EMR-4000 motor and generator protection relays. It supports up to 12 RTD temperature sensors, converts resistance signals into temperature data, and transmits data to the protection relay via fiber optic link or Modbus-RTU. It is widely used for winding, bearing temperature monitoring and thermal protection of large motors, generators and transformers.

Features

• Part No: URTDII-01, Brand: Eaton Cutler-Hammer
• Universal RTD module, support 12 RTD inputs (PT100, PT1000 etc.)
• Power supply: 48–240V AC / 48–250V DC, power consumption 3.5W
• Two communication options: fiber optic to EMR relay, or Modbus-RTU 485
• Remote mounting, can be installed close to the monitored equipment to shorten RTD wiring
• Channel fault detection: open circuit, short circuit and sensor failure alarm
• DIP switch setting for Modbus address and working mode
• Operating temperature range: -20℃ ~ +55℃
• DIN rail mounting, metal housing, high anti-interference performance
• Data can be used for temperature display and thermal overload protection logic

Applications

• Large medium-voltage motor winding and bearing temperature monitoring
• Generator, transformer and high-voltage cable joint temperature protection
• Oil & gas, water treatment, mining and steel plant motor protection cabinet
• Match Eaton EMR-3000 / EMR-4000 multi-function protection relay
• Legacy Eaton URTDII system spare replacement and retrofit

FAQ

Q: What is the difference between URTDII-00 and URTDII-01?
A: URTDII-00 is fiber-only version; URTDII-01 supports both fiber optic and Modbus-RTU communication.

Q: Can it work independently without EMR relay?
A: It can run as Modbus slave for PLC reading; for thermal protection function, it needs to cooperate with EMR protection relay.

Q: Is URTDII-01 discontinued?
A: This is legacy Eaton protection accessory, original production limited, supplied as surplus, refurbished and tested spare parts only.

Q: What RTD types are supported?
A: Mainly PT100, also compatible with other standard platinum RTD sensors.