TR277A Relay
Model: TR277A
The ILC TR relay provides a unique solution for remote control and panel mount control applications. Because each relay has its own internal power supply, it can be mounted virtually anywhere without additional transformers or power supplies. By incorporating a unique single moving dual-contact design, both endurance and reliability are significantly enhanced. TR relays are magnetically latched, requiring only a momentary rectified pulse to open or close the contacts. Isolated pilot contacts are available for indication of relay status at the switch stations. Available TR-Retro relays automatically turn on upon power-up and require a momentary closure to turn the relay on and off.
Cutsheets
Installation Guides
Specifications
Physical:
- 1.125”Wide x 1.375” High x 2.5” Long
- Mounts in standard 1⁄2” knockout
- Termination wires for high and low voltage connections
- Clearly marked connection designations
Low Voltage:
- Momentary positive or negative rectification for control (TR-Retro momentary dry contact 3 wire control)
- Momentary duty rating
- 50 milliseconds minimum activation time
- 50 to 55 Ω coil resistance
- 1A @ 30 VDC/VAC status contacts
Electrical:
- 120 or 277VAC
- 20 Amp ballast loads
- 20 Amp tungsten loads
- 20 Amp general loads
- 1 Hp @120VAC motor loads
Operating Environment:
- Location: Interior Space
- Operating Temp.: 0° to 60° C
- Humidity: 10% to 90% Non-condensing
- Atmosphere: Non-explosive/corrosive
- Vibration: Stationary
Certifications:
- UL
- CUL
- FCC
Resources
Features
- Made in the USA
- Magnetically held relay maintains position without the presence of power, saving energy
- Suitable for controlling all lighting loads
- SPST maintained contacts
- Single moving contact design
- Status contacts available for signaling relay state
- Relay contacts consist of 2 nickel-silver contacts designed for high current loads
- Termination leads for line, load, neutral, and control connections
- Mounts in any standard 1/2” knockout
- Operates in any position
- Endurance tested independently to 1,000,000 cycles
- Retrofit relays can be used with existing HV switches and go to the ON state upon power-up