![](/img/spacer.gif"){kind=spacer}
TR-A Relays - Self-Powered Transformer Relay With Pilot Contacts
ILC TR-A relays provide a unique solution for remote control applications where panel mount relays are simply not possible. Because each TR-120A or TR-277A relay has its own built-in Class 2 power supply, TR-A relays may be located virtually anywhere without the need of remote mounted transformers or power supplies. Like all ILC relay components, TR-A relays are designed and manufactured to be the longest-lasting, most reliable relays available. By incorporating a unique single moving part (the contacts) design, both endurance and reliability are significantly enhanced. Compare our 200,000 ON/OFF cycle FULL LOAD and 1,000,000 no load ratings with any other relay in the industry. We're confident you will agree that for reliability and endurance, ILC TR-A relays simply can't be beat. TR-A relays are magnetically latched, requiring only a momentary rectified AC pulse to open or close the contacts.- Unique patented built-in Class 2 Transformer power supply
- 1 AMP 30 VAC isolated contacts for status feedback or pilot lights
- Magnetically latching contacts
- Single moving part design
- Operates in any position
- Unmatched endurance
- 200,000 (ON/OFF) cycles, at FULL LOAD
- 1,000,000 (ON/OFF) cycles, at no load
- 20 amp 120 or 277 VAC operation
- UL, FCC approval for commercial and residential use
Features
General Information
- UL Listed
- Mounts in standard ½" K.O. .865" - .875" diameter, 14 or 16 gauge material
- Operates in any position
Line Voltage Characteristics
- Contacts: SPST Maintained (permanent magnet latching)
- Termination: Color Coded, 6" Pigtail Leads
- Line - 14 AWG, Black
- Load - 14 AWG, Blue
- Neutral - 18 AWG, White
Low Voltage Characteristics
- Single transformer secondary-relay operating coil - 15 VAC open circuit and 200 mA short circuit, maximum
- Brown and Yellow control leads, 20 AWG, 6"
- Two Orange status Feedback/pilot contact leads, 20 AWG, 6"
- Duty rating: Momentary
- Minimum activating pulse time: 50 milliseconds
Specifications
Physical
- Mounts in standard ½" K.O. .865" - .875"
- Operates in any position
Electrical
- 120/277 VAC
- Motor Loads -- 1 Hp @120VAC
- 20 amp Ballast 120 VAC
- Resistive loads: 20 amps 120/277 VAC
Operating Environment
- Location Interior Space
- Operating 0° to 50° C (32° to 112° F) Temperature
- Relative 10% to 95% Humidity Non-condensing
- Atmosphere Non-explosive, Non-corrosive
- Vibration Stationary application NEMA Level A
Certifications
- UL
Related Downloadable Documents
The following are the most commonly related PDF documents used with this product. Select Resource Library at the top of this page for a comprehensive listing of all PDF documents and all categories or contact ILC directly for personal assistance.