ABB TSR-B Trip Circuit Supervision Relay 1MYN569339-A
- Brand: ABB
- Model: TSR-B
- MPN: 1MYN569339-A
- Manufacturer: ABB
- Type: Trip Circuit Supervision (TCS)
- Condition: New
ABB TSR-B Trip Circuit Supervision Relay
The ABB TSR-B is a high-reliability supervision relay that monitors the integrity of the trip circuit in both breaker open and breaker-closed modes. Open circuits, loss of control voltage, and high resistance in the trip path are detected using a small supervision current. Its robust design makes it ideal for the vibration-heavy environments found in marine engine rooms and offshore platforms.
Specifications
| Feature | Specification |
|---|---|
| Rated Voltage (Un) | 110–125 V DC / 220–250 V DC (Variant Dependent) |
| Supervision Current | < 1.5 mA |
| Operating Delay | Approximately 0.5 seconds (to avoid nuisance trips) |
| Contact Configuration | 1 NO + 1 NC or 2 Change-over contacts |
| Mounting Type | DIN Rail / Flush Mount |
| Environmental Rating | IP40 (Front Panel) |
Applications
- Marine switchboards monitor the main propulsion breaker trip circuits on commercial vessels.
- Power Generation: Ensuring generator protection circuits are operational in thermal or hydro plants.
- Substation automation is an important link in the protection chain for MV/HV transformers and feeders.
- Industrial Plants: Used in large manufacturing facilities where downtime caused by breaker failure is unacceptable.
Expert Insight:
On a vessel, the TSR-B is your silent watchman. When installing the 1MYN569339-A, ensure your supervision current is correctly calculated. If the resistance in your trip circuit is too high, the relay may signify a ‘healthy’ state even if the coil is failing. I recommend checking the relay’s operation during every dry-docking cycle by simulating a break in the trip wiring to verify the alarm contact transition.
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